Download Michaelo Espresso Cafina c60 Service manual

Cafina Technical
Service Manual
This copyright protected manual is
intended exclusively for
use with machines supplied by
Michaelo Espresso
Reproduction of any part of this
manual is strictly prohibited
Installation Setup / Checklist
Installation Setup
Page 1 of 2
18”
23”
Section 2: Installation/Tools
Cafina c60 Service Manual
2
36”
Accumulator Tank
(optional item - May
be provided with the
machine)
2-3/8” hole for lines
NEMA L630R
Drain
16”
11”
Water
3/8” compression with
shut off
Optional
Floor Sink
30 Amp, 220 Volt outlet:
NEMA
L6-30-R
Outlet within 6 feet of Cafina
208 Volts minimum at outlet
(A booster may need to be installed)
Cold water feed line:
3/8” Compression Fitting with Shut Off Valve
Located within 6-10 feet of Cafina
Water line must be flushed thoroughly
Filtration:
Water line MUST have a coarse particulate
filter
A fine carbon filter is strongly advised
Hardness Should be below 7 GPG
(A water softener may also be needed)
Drain:
Floor Sink or drain should be within 6 feet
Path for drain hose must not have Horizontal runs
Drain Hose must have a 2” air gap at floor
3
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Installation Check list
Page 2 of 2
Section 2 : Installation/Tools
Cafina c60 Service Manual
Check over equipment for shipping damage. Report any damage found to Michaelo:
800-545-2883.
Check Incoming Water Pressure. It should be between 45 PSI and 90 PSI, if the
incoming pressure is greater than 90 PSI there MUST be a pressure reducer placed in
the line. Preferably before the filtration system.
Flush Incoming Water Line. Run several gallons of water through the lines at full force
before connecting to the machine. This is extremely important; there are several very
small ports that will become clogged if this procedure is not followed.
Install long legs.
Hook up Water Line. Use white Teflon washers as needed.
Install Drain Hose with clamp provided and ensure that it runs continuously downward.
The end of the hose should have an air gap at the floor drain.
Purge Brew Boiler. Unscrew the top of the Hex shaped Safety valve above the brew
boiler until water flows out into the drip tray. Re-tighten valve.
Check White Coffee Chute. Should be snug against grinders, tighten screw.
Check Piston Assembly Mounting Screws. Screws can work loose in shipping.
Check Incoming Voltage and Amperage. The Cafina requires 208v MINIMUM, and
ideally 220v. The unit is 5400W and MUST have a 30-amp breaker.
Do Not plug Cafina in until Water is hooked up.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Set Cafina Pump Pressure to 8 bars. Go to the service position,
select handling, and switch the pump on. Check pressure on gauge.
Turn off pump and release pressure by running the bypass valve,
adjust pump as needed and check again.
Run the Reference. If beans are available at the time of installation,
follow the Run Reference instructions in the service manual.
Run Each Drink. Test each drink button at least once.
Test Steam and Water buttons.
Run A Cleaning Cycle.
© 2003 Michaelo Espresso,
Inc. All rights reserved.
4
Recommended Tools
Recommended tools
Page 1 of 1
Section 2: Installation/Tools
Cafina c60 Service Manual
Wire Brush and Dental Pick
2
Allen Wrenches with long
handles 2.5mm, 3mm, 4mm
Michaelo recommends
Wiha Brand System 6 with
284 series long blades
Wihatools.com
Open end wrenches
22mm
20mm
14mm
12mm
7mm
Small Phillips for ICU board
adjustments
Standard and Phillips
Screwdrivers
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Set of Metric
Allen Wrenches
8mm Socket for
Grinder Burr Change
5
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Section 2 : Installation/Tools
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
6
Cafina Service Worksheet
Service Call Worksheet
Technician: ________________________
Section 3: Service Call Instructions
Cafina c60 Service Manual
Service Company: ____________________
PO #:_____________________
Upon completion of call, fax this sheet
back to Michaelo (206) 695-4951
Date: ____________________
Customer:
3
Machine Serial #:
1. Check condition of Filters:
PSI
Incoming Pressure
Output Pressure
PSI
2. Number of shots on hit counter
3. Run Protocol in Service Mode (delete when finished)
Record DP Codes Here:
Number of DP 30 Codes / Cleanings:
4. Check Water flow and Flowmeter under “System” in Manager mode.
Actual flow time:
Sec
4-6 Seconds is normal for 65ml
5. Grind Times: From reference or run shot then look at Manager mode page 3
Double*
Sec
Double**
Sec
Consider changing burrs if over 2.5 sec
6. Check for coffee grounds in Slider area under Piston.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Vacuum if needed
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
7. Run Reference if needed
Double shots should average 14 seconds
8. Run hot water until Boiler Autofills
Wait 30 seconds then test Steam Output
9. Check that drain line is running smoothly
OK, no leaks
OK, no leaks
© 2003 Michaelo Espresso,
Inc. All rights reserved.
10. Delete Filter counter
7
Filter Reminder Reset
Page 1 of 1
Section 3: Service Call Instructions
The Cafina filter reminder displays a
flashing “filter” message over the drink
menu after a preset number of drinks
have been run ( 60,000 is the default).
Cafina c60 Service Manual
Since the reminder needs to be reset with a service key,
we recommend resetting the count at every service call
and monitoring the filters independently.
MANAGER
1
Key to Service Position
(Service)
ON
OFF
2
3
Select Next
Select filter
product data
set cleaning
protocol
filter
handling
product names
temperature
run reference
next
next
>>
s
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
4
>>
Press delete to reset the
counter to the pre-set value
filter
6000
delete
>>
filter
+5000
filter
-5000
c60
5
This counter
counts down
from the pre-set
value
47204
filter pre-set
s
c60
s
Select YES to confirm
**filter**
delete?
YES
>>
NO
>>
c60
© 2003 Michaelo Espresso,
Inc. All rights reserved.
8
s
Grind Time Check
Grind Time Check
Page 1 of 1
Section 3: Service Call Instructions
The condition of the grinder burrs is
monitored by watching the change in grinding time
for the reference drinks. The grind time increases as the
grinder burrs wear out. Worn burrs take longer to grind
the same amount of coffee.
Cafina c60 Service Manual
3
The time displayed will always be the time of the last drink made.
V3.51 Software automatically displays the grind time of the last drink made on
page 3 in Manager mode (If Grind time doesn’t display in Manager, go to main
Reference page in service to see time.)
1
2
Select the Reference Drink you wish to check
and allow the machine to brew it. Reminder: The
Reference Drink name is followed by an asterisk.
Turn key to Manager position
MANAGER
Double*
Triple
ON
OFF
3
Single
Press Shift twice to view 3rd Screen of Manager
Mode and note the time recorded next to
Grinding.
Americano 12
Americano 16
c60
s
Default 1st page of drink menu
when machine is on
Manager Screen 3
protocol
Check each Grinder Separately
System
Grinding
time for
last drink
brewed
Grinding 1.78
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
s
Evaluating Grinder Burr Condition from the Grind Time Reading
FOR 14 GRAM DOUBLE SHOT*
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
New Burrs = less than 1.7
Normal Burrs = 1.2 - 2.25**
*
If Double Shot is not 14 Grams, call Michaelo for grind time range
**
If time = greater than 2.25 - Call Michaelo for advice
© 2003 Michaelo Espresso,
Inc. All rights reserved.
9
Checking Filters, Typical Set-up
Page 1 of 1
Section 3: Service Call Instructions
Cafina c60 Service Manual
Clogged Filters may cause:
“no water” reading
DP 31 (Boiler slow to fill)
DP 11 & 13 (poor flow through coffee)
Bypass Valve
Should be Closed all the time
Incoming
Water Pressure
Water Pressure
to Cafina
Flushing Valve
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
The water pressure to the Cafina will slowly decrease over
time as the filters become clogged.
Test the flow through the filters by opening the Flushing valve.
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
The outgoing gauge may still read high with clogged filters if
no water is being used, but will drop as soon as the flushing valve
is opened.
The Coarse Filter should be changed when it turns brown.
When the filters clog up it shows that they’re working. They are
stopping the coarse and fine sediment from harming the machine
and changing the taste of the coffee.
10
System Test
System test
No Coffee water flow test
Section 3: Service Call Instructions
Cafina c60 Service Manual
The System Test is used to make sure the water is
flowing freely through the machine before running reference or troubleshooting shot time problems
3
MANAGER
1
Key to Manager Position
ON
OFF
daily counter
protocol
water quantity
System
coffee quantity
Grinding
lock buttons
3
1.78
0
Select System
2
s
c60
s
c60
Press Shift twice
Water flow Time
4
Double*
start
Press Start
>>
actual time 4.5s
136
Flowmeter Pulse
Count
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
65ml
c60
s
Pre-set amount of water
4-6 seconds
6-8 seconds
8+ seconds
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Normal flow time for 65ml of water
Run several cleaning cycles and try again
Check water flow from Brew Valve
See next page
© 2003 Michaelo Espresso,
Inc. All rights reserved.
11
Check Water Flow from Brew Valve
Page 1 of 1
Section 3: Service Call Instructions
Cafina c60 Service Manual
Use if the System test is over 8 seconds to
isolate the location of the clog
Times the water flow from the Brew Valve
before it goes to the Piston
Remove the Spout Panel
Replace the Grounds
Drawer
Brew Valve
Disconnect the line to the
bottom of the brew chamber
Turn Key to Manager
Press shift twice
to display System Test
Double*
start
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Run System test
while holding the line
pointed into the drip-tray
>>
actual time 4.5s
136
65ml
c60
s
If actual time returns to normal the problem is a clog in
the Brew Chamber, Tamp or Spout
If actual time is still over 8 seconds then look for a clog
in the:
Flowmeter, Brew Valve, or Brew Boiler
© 2003 Michaelo Espresso,
Inc. All rights reserved.
12
Steam Wand Backflush
Steam Wand Backflush
Page 1 of 1
A clogged Steam Tip is the most
likely cause of weak steam flow.
Remove the Steam Tip by unscrewing it
from the wand and clean out the holes.
Section 3: Service Call Instructions
Cafina c60 Service Manual
3
If cleaning the tip doesn’t restore good flow
try this cold water backflushing procedure:
NEVER leave the steam wand in the milk pitcher.
The milk will be sucked up into the wand and may contaminate the boiler.
2
10 Second
pre-heat
3
2 Seconds On
10 Second Pause
Repeat 5 times
5
4
1 Remove the Steam Tip
2 Fill a Milk Pitcher with cold water (Never use any cleaner!)
3 Heat the Steam Wand by running it for 10 seconds
4 Turn the Steam off and immediately insert the Wand into the
cold water
5 Run Steam again for 2 seconds then turn off
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
6 Wait 10 seconds for the water to be sucked up into the wand/
valve
7 Repeat steps 5 and 6 four to five times to soften and flush out
the clog
8 Refill the pitcher with fresh cold water and repeat if needed
13
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Section 3: Service Call Instructions
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
14
General Service Checklist
General Service Checklist
Page 1 of 8
Section 4: General Service
Cafina c60 Service Manual
Check DP codes in Protocol
Record codes then Delete when prompted
Check grind time for each grinder
Run Cleaning Cycle or System Test to empty coffee chamber
4
Run bypass valve in handling to check for clog
Remove and clean Bypass Elbow if needed
Remove Piston, set aside
Move Grinder collars by hand to check for free play
Remove Collar and clean threads if hard to turn
Clean inside of machine
Clean Dispensing spout, Bean hopper, and all panels
Install new Piston
Plug machine in with key in the ON position
O-data should count automatically (pulses at top of travel)
if not clear o-data in service mode and turn OFF/ON
Check that pump is set to 8 bars
Run Reference for both Grinders
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Check Steam Wand for leaks
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Delete Filter counter
Run hot water, check that boiler autofills
Check each drink button
Check filters and drain line
© 2003 Michaelo Espresso,
Inc. All rights reserved.
15
Remove Panels
Page 2 of 8
Section 4: General Service
Cafina c60 Service Manual
Top Cover
• Remove the two 2.5mm Allen screws on either side of the cover.
• Lift cover and disconnect grounding wire.
Sides
• Remove Top Cover
• Grasp side panel at front edge, top and middle with fingertips.
• Pull sharply out.
* To replace: insert rear of side panel into back panel. Snap the front edge
into place with the heel of your hand.
Back Panel (Usually can stay on for Piston change)
• Remove Top Cover and Sides
• Loosen the 10mm nuts on the bottom tabs first,
then the 4mm Allen screws on the top tabs.
• Swing panel out from the bottom.
2.5mm Allen screws
#2303083
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Grab Side panel
with fingertips and
pull sharply to
open.
© 2003 Michaelo Espresso,
Inc. All rights reserved.
16
Remove Dispensing Spout Panel
Remove Dispensing Spout Panel
Page 3 of 8
Section 4: General Service
Cafina c60 Service Manual
1. Remove Grounds Drawer
2. Remove the 2.5mm Allen screw in the upper left corner
3. Remove Drip Tray Grating
4. Loosen the two 7mm nuts on the underside bottom edge of the panel
4
5. Push Spout to lowest position
6. Swing bottom of panel out of the front of the Drip Tray
7. Disconnect brew lines by reaching behind panel and pulling the clear
lines off of the short silicon connector tube
Always reconnect
the Brew Line to the
Right Hand side!
Line from Bypass Valve
Silicone Connector Tubes
Stay on Spout
Tubes #2701015
Push
Spout
Down
Complete
Spout
2601003
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
2.5mm Screw
2301041
Swing bottom of
panel out to front
of Drip Tray
Loosen 7mm nuts
17
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Replace Step Motor Cable - see next page
Page 4 of 8
Section 4: General Service
Cafina c60 Service Manual
Replace the Step Motor Cable even if
it looks OK. The stress from thousands
of cycles can damage the wires even if
the outer insulation looks fine.
1 Unplug connector and disconnect cable clamps from Step Motor control Board
NOTE:
Inspect the new cable. Notice that, although the connectors at each end of the
cable are identical, one end has two black jumper wires attached. This end of
the cable must be connected to the Step Motor.
2 Plug the cable end without jumper wires into the circuit board
3 Secure the cable clamp
4 Set the Step Motor Board aside until you have reinstalled the piston
5 Cable MUST be threaded through guides on step motor frame!
STE
BOA P MOT
O
RD
270 R
302
7
Make sure to re-install
the Cable Clip
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Step Motor Cable (2703048)
Plug end with black
jumpers goes to step
motor
Step Motor
Cable MUST be threaded
through guides when
reinstalling
18
Replace Piston
Replace Piston
Page 5 of 8
Before replacing piston:
• Unplug Machine
• Remove Top Cover
• Remove Dispensing Spout Panel
Section 4: General Service
Cafina c60 Service Manual
4
1
Raise Piston by turning
sprocket counter clockwise
2
Disconnect ribbon cable from top
of Step Motor Board
3
Slide Step Motor Board up and out
of guides
STEP MOTOR
BOARD
2
Line Pot Cable
PISTON ASSEMBLY
2703036
Ste
4
Unplug power lead from bottom of
Step Motor Board
5
Disconnect cable from Step Motor:
• Pry gently with screwdriver
• Plug pulls directly to the left
• Be careful not to bend pins
• Plug end with black jumpers
goes to step motor
• Refer to page previous for detailed
instructions
6
pM
ot
270 or Boa
302
rd
7
4
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
PISTON ASSEMBLY
5
Unhook cable from guides on Step
Motor frame
STEP MOTOR
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It may be easier to screw the piston
down by hand and unhook the
cable from the front
6
Cable MUST be threaded through
guides when reinstalling
7
Set Board and attached cable aside
© 2003 Michaelo Espresso,
Inc. All rights reserved.
19
Replace Piston
Page 6 of 8
Section 4: General Service
Cafina c60 Service Manual
8
Remove 3mm Hex Screw and Lock
washer - Use one drop of Locktite when
replacing
9
Slide Grounds Chute forward
Remove Chute and set aside
When replacing, be sure that grinder
tunnels are fully inserted into Chute
10
Remove 3mm Hex Screw
and Washer
11
Slide Puck Chute forward to
release from notch on Piston
12
Pull Puck Chute away from Piston
Leave chute sitting loosely in
place
Grounds
Chute
2253089
8
9
11
10
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Puck chute &
Switch
2253087
2703391
12
When replacing the Puck Chute, be sure it is fully seated in the notch or
water will leak during cleaning cycle
20
Replace piston
Replace Piston
Page 7 of 8
Section 4: General Service
14
15
Unplug Line Pot Cable
Loosen clip holding black cable
2.5mm hex
Disconnect line from
Pressing Valve
2403206
12mm wrench
Cafina c60 Service Manual
4
13
Step Motor
13
Brew line
2403031
Unplug Main Plug
14
16
Disconnect line from
Brew Valve (press
black ring in while
pulling line out)
17
Loosen Mounting Screws
4mm hex
18
To Remove Piston
1
Tamp
19
15
17
Screw Piston up by hand - Rotate
16
Slider forward to clear grinders
2
Slide Piston forward to clear grinders
3
Lift Piston straight up
4
Turn piston slightly clockwise to clear
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
boiler pipes
19
Transfer both clear lines to the new
Piston
Always Clear o-data immediately after replacing piston!
© 2003 Michaelo Espresso,
Inc. All rights reserved.
21
Clear o-data
Page 8 of 8
The O-data is the instructions for how far the step
motor moves the piston during a cycle. It needs to be
cleared and reset when a new piston is installed or
when the step driver board is replaced.
Section 4: General Service
Cafina c60 Service Manual
When the piston bounces at the top or bottom of its travel, it may have lost count
of the steps for the step motor. (Check that the Line Pot Cable is connected first.)
After the O-data is cleared the machine automatically recounts the steps during
the first start-up cycle.
MANAGER
If the machine is unplugged:
Turn key to the service position
before plugging machine back in.
(Service)
ON
1
Key to Service Position
2
Press next 3 times to go to the 4th service screen
OFF
machine OFF
clear o-data
EEPROM delete
0
next
3
Press clear o-data
4
Then Press machine OFF
>>
c60
*** Caution: ***
Never touch the EEPROM
delete button. This
will delete all machine
programming!
s
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
MANAGER
5
Turn Key to ON
(Service)
ON
OFF
The machine will go through a start-up cycle. At the top
of its travel it will pulse as it determines the exact place to
stop. It will then count the steps down and test the slider
clearance.
© 2003 Michaelo Espresso,
Inc. All rights reserved.
22
Reference Calibration
Reference Calibration
Page 1 of 6
Section 5: Reference Calibration
Cafina c60 Service Manual
5
Running Reference
Setting the home position of the Grinder
Collars. The grind needs to be adjusted
for the type of Coffee Beans, Temperature,
Water and Humidity at each location.
Once set, the cafina will automatically adjust the grinders
to maintain the ideal espresso shot
This calibration is done after the install is
completed. It is important to use a fresh bag of the
same brand of coffee beans the customer will be
using and to redo if the customer changes brands
This adjustment is also done after a piston or
grinder burr change.
The machine should need no further technician
adjustment until the next scheduled service.
However, occasionally the adjustment needs to be
redone sooner if the machine is not self-adjusting
properly. Call Michaelo for advice.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
23
Adjust Pump Pressure
Page 2 of 6
The Pump pressure is measured with all water valves
closed. This is different from a conventional espresso
machines where the pressure is measured with the
water flowing from the grouphead.
Section 5: Reference Calibration
Cafina c60 Service Manual
MANAGER
(Service)
ON
1 Turn key to Service position
OFF
2 Remove left side panel of machine
product data
The gauge is in a spring holder directly
behind the Pump. The Pump Adjusting
Screw is on the front of the pump head,
facing the operator.
protocol
handling
temp
next
0
>>
4 Press pump to run Pump
s
c60
pump
filler cover
3 Select handling
5 Note reading on Gauge
6 Press pump again to stop the Pump
0/ 1
Start
Pump
0/1
7 Press bypass valve ON then OFF to
bleed pressure from line
electromagnet 0/1
8 Turn Pump Adjusting Screw as needed:
bypass valve 0/ 0
1
next
>>
c60
Clockwise to increase pressure
Counter-Clockwise to decrease pressure
Bleed
pressure
9 Run Pump again to check new pressure
s
10 Repeat steps 3 - 9 until gauge reads
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
between 7 and 9 bars
A Check Valve in the
system holds the last
highest reading
Use the Bypass Valve
to bleed down the
pressure in-between
adjustments
Gauge
Adjusting Screw
Pumphead
Lock Nut
© 2003 Michaelo Espresso,
Inc. All rights reserved.
2603001
24
Reference Calibration
Reference Calibration
Page 3 of 6
Section 5: Reference Calibration
Cafina c60 Service Manual
The technician sets the grind to the type of coffee
and the ambient conditions of a specific location. Once the grind
is properly set, the machine will self adjust as these conditions change.
A separate Reference must be set for regular and decaf drinks.
5
The Cafina will always try to dispense a shot to the pre-set time (usually 14 sec)
Completing the Reference calibration simply sets the grinder self-adjusters to “0” so they have
the maximum amount of future adjustment available.
The Reference must be run when the machine is first set up, after a piston change, and
after each time the grinders are changed or worked on. The Reference should last until the next
scheduled service call, but will occasionally need to be rerun sooner.
It may take several dozen shots to properly set the Reference. Please be patient.
You are “teaching” the machine how to make good coffee.
1
Check that the Pump is set to 8 bars
2
Check the water flow with no coffee with the System Test first.
It should be less than 6 seconds before running reference
3
Fill hopper with beans. Do not let beans run out during reference.
4
Turn key to Service position
MANAGER
If the water was turned off during
service: Turn Key to OFF then ON
then to Service.
5
ON
OFF
Select next to display second
service screen
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
set cleaning
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
filter
product names
run reference
next
6
Select Run Reference
0
>>
c60
s
Second Service Screen
Continued on next page
25
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Reference Calibration
Page 4 of 6
Section 5: Reference Calibration
Cafina c60 Service Manual
***REFERENCE***
6
Set Line Pot to 0 (-1 or +1 is OK)
Line Pot adjustment is on back of ICU board,
behind front panel directly above the keypad
buttons. The Line Pot is the tamping pressure
sensor on the piston.
Double*
Double D**
0
Lin. Pot
0
s
c60
Line Pot Adjustment
7
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Select which of the two Reference drinks you
wish to calibrate
A Reference for each hopper has been
indicted with a * and **
***REFERENCE***
Both reference drinks
must be calibrated
separately
Select the drink you
wish to calibrate
Double*
Double D**
delete
0
Lin. Pot
0
c60
© 2003 Michaelo Espresso,
Inc. All rights reserved.
s
Continued on next page
26
Reference Calibration
Reference Calibration
Page 5 of 6
Section 5: Reference Calibration
The Reference time must be set to the desired
shot time found on the Data Sheet
8
Cafina c60 Service Manual
This is the target time that the machine will use
for future self-adjustments
Target time
9
5
***REFERENCE***
Double*
8
Select Next
14.0s
time pre set +1s
time pre set
-1s
0
next
>>
10 Run 4 shots at first to look for a consistent
Actual Time:
s
c60
9
Press button 2 to start a test shot
Wait for Actual Time to be displayed
***REFERENCE***
Machine may automatically run several
cycles to find the correct grinding time
Double*
14.0s
Start
actual time 15.5s
If Actual Time is very slow, the cycle may
be canceled by pressing the Shift key
grinding
Change the grinder setting if the average
Actual Time is above or below desired
time
1.320
data
>>
s
c60
Slightly longer time (14 - 16 seconds) is
better than too fast
Cancel
cycle
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
***REFERENCE***
To Change Grind
1
Select grinding from
REFERENCE screen
Double*
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
14.0s
actual time 15.5s
grinding
Change
grind
1.320
data
>>
c60
1
s
Continued on next page
27
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Reference Calibration
Page 6 of 6
2
Section 5: Reference Calibration
Cafina c60 Service Manual
Select Coarse or Fine to adjust grind to
change the Actual Time as needed:
Coarse - moves the burrs further apart,
and speeds up the actual shot time.
***REFERENCE***
Double*
Fine – moves the burrs closer together,
and slows down the actual shot time.
14.0s
Coarse
5
Fine
20
Adjust 4-5 increments for major change,
1-2 increments for small change.
EASY DOES IT!
2
Grinder
Start
c60
3
(The Fine adjustments are smaller
increments than the Coarse adjustments)
s
(Grind increments will zero out each time
the Reference is run; they have no set
value)
Press Shift to return to the
REFERENCE screen
Always return to the Reference page and run 3-4 cycles after making a grind
change. This allows the previous grind to make its way out of the grinder chamber
and for the machine to “settle in” to the new grind setting.
To cancel the water flow on the 1st cycle, press shift as soon as the grinder starts.
If the buttons lock and “grinding” flashes, the waste drawer is full.
Accepting the New Reference
***REFERENCE***
Double*
1
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
2
Look for at least 3
consistent shots within
2 seconds of desired time
14.0s
actual time 14.0s
grinding
1.320
data
Press the button next to
actual time to accept the
new Reference
2
>>
c60
s
Accept
new
Reference
Exiting the program any other way will not set the new reference
Accepting the actual time sets the center point of the grinder collar
3
Don’t forget to also run the Reference for the other hopper
© 2003 Michaelo Espresso,
Inc. All rights reserved.
28
Screen Message Troubleshooting
General Troubleshooting
Page 1 of 5
Section 6: Troubleshooting
Flashing “Filter”
Delete filter counter
Cafina c60 Service Manual
Flashing “cleaning”
“Set Cleaning” counter reached, normally 250 shots. Run cleaning
Flashing “reference”
No reference drink assigned, Check all drink values in product data
6
Temp > 106
Temp probe wire disconnected at brew boiler or J13 on ICU
Clean J13 pins with electrical contact cleaner
Air in water line entered Brew Boiler, Bleed through 12 bar safety valve
Temp probe defective: 2k @ room temp, 3k + when hot
Please Wait– and two different temps displayed
Water continuously flowing in drip tray from leaking 12 bar Expansion valve
Water continuously flowing in drip tray from leaking Brew Valve
Water filling Grounds box from leaking Brew Valve
Dual ceramic High limit on front of brew boiler corroded – replace
Element in Brew boiler bad (least likely) should read 22
24 Volt missing
Jammed slider motor. Powerboard may be burned
Short in: Flowmeter or Mechanical counter
Short in one of the Valve plugs/coils or wiring
F4 fuse on powerboard
Grinder collar jammed
Screen displays “>>> on >>> “ and won’t start-up:
Switched ON from service mode before brew boiler fully heated,
Switch OFF and then ON with key
Binding slider motor
Water turned OFF
Check that brew boiler is heating / check dual ceramic high limit
Re-seat piston main plug and all plugs on ICU and powerboard
Re-seat flowmeter plug
Clean or replace flowmeter impeller
Possible air in water line (recent filter change etc.)
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
29
General Troubleshooting
Page 2 of 5
Section 6: Troubleshooting
Cafina c60 Service Manual
No flow from spout:
Coffee leaks inside machine: detached hose to spout
DP13: Coffee too fine, clogged tamp (run System test)
Output hose kinked or “Y” clogged at back of spout
Check grinder adjust motor operation in handling (grind too fine)
Check that the pump is running during each shot
Screen shows condensation, Buttons may not work
Leaking Steam valve. Normal operation will return when display panel dries out.
Screen Dim
Adjust LED trim pot on ICU board. see page 71
Check F6 fuse on powerboard Red diode will light when fuse is bad
Screen Blank or shows only Vertical lines
Plug on gray ribbon cable to ICU wet. Blow out with air or
contact cleaner. Power must be disconnected before blank screen will reset.
Water from Steam Wand
Boiler overfilled (See Overfilled Boiler troubleshooting section)
Autofill or adding Valve leaking past. Check for flow into driptray
Autofill probe scaled over / disconnected
Water Wand sprays steam & water
Adding valve not working or clogged
Low incoming water pressure
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Continuous steam puffs or drips from Water Wand
Water solenoid leaking past
All buttons (menu, water & steam) not functioning
Water or Steam button shorted - unplug J6 & J10 to check
Water violently pulses in driptray from behind front panel
Powerboard ground wire not attached causing Autofill Valve
to be open all the time.
(usually just after powerboard change)
© 2003 Michaelo Espresso,
Inc. All rights reserved.
30
Extraction Troubleshooting
Extraction Troubleshooting
Page 3 of 5
Always use the Double or Double D to evaluate
the Extraction / shot time
Section 6: Troubleshooting
Cafina c60 Service Manual
Shot time is long Reg or Decafe
Run 5 reference drinks to allow machine to self adjust
Run reference to reset grinder
Check grind time to see if burrs are worn (over 2.5 seconds)
Check that the pump is running during each shot
Check pump pressure in Handling, should be 8 bars
Check grinder adjust motor operation in handling (grind too fine)
6
Shot time is long Reg and Decafe
Does pump run? Check in Handling
Run System test to check water flow
If still long check water flow from Brew Valve. see page 36
Shot time is fast
Run 5 reference drinks to allow machine to self adjust
Run reference to reset grinder
Check grinder adjust motor operation in handling (grind too coarse)
Shots are long Volume
Check water Quantity in Manager mode
Measure volume during System test
Clean or replace flow meter impeller
Call Michaelo for further advice
Shots are Short Volume:
Check Water Quantity in Manager Mode (Double usually 65ml)
Measure volume during System test
Possible air in water line (recent filter change etc.)
See solution above for “ >>> ON >>> “
Clean or replace flow meter impeller
See water leak into Grounds box solutions
Is water also flowing from behind front panel
during short shot?:
Pump set too high, set to 8 bars in handling
Brew valve leaking through vent tube. Open and clean valve
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
If shots are still Short Volume call Michaelo for further advice
© 2003 Michaelo Espresso,
Inc. All rights reserved.
31
Water Leaks
Page 4 of 5
Section 6: Troubleshooting
Cafina c60 Service Manual
Water on counter:
During brew cycle
Line from Brew valve to piston
Line from tamp to Spout
Bleeder screw on top of Tamp
Pressing valve not working
During cleaning cycle
Misaligned Puck Chute
Leak from underside of brew chamber
– replace piston
Water Leaking into drip tray from behind front panel:
A small burst of water will normally flow from here at the end of each
shot and during the cleaning cycle when the pressure in the brewing chamber
is vented . Some flow is also normal when the machine is first turned on.
Water leaks into drip tray continuously
Steam boiler overfilling, Safety valve opening
Check for debris in Autofill Valve
Brew boiler Expansion (Safety) valve leaking past
Replace seals
Brew Valve leaking past, Rebuild or replace
Water leaks into drip tray only when shot is brewing
Pump set higher than 12 bars, Safety valve opening
Brew valve leaking through vent tube, run cleaning
cycle, rebuild brew valve.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Water into Grounds box:
Small amount is normal during cleaning cycle
Large amount of water in grounds box
Brew valve leaking past
Loose sealing ring bleeder screw on top of Tamp
Tamp Sealing (pressing) valve not working
Tamp Sealing (pressing) valve leaking
© 2003 Michaelo Espresso,
Inc. All rights reserved.
32
Piston Troubleshooting
Piston Troubleshooting
Page 5 of 5
Watch the piston during start-up cycle
Section 6: Troubleshooting
Cafina c60 Service Manual
Piston will mot move immediately after piston change
Step motor cable installed backwards
Black jumpers should be on the Motor side
Slider hits or nicks lower edge of Tamp
O-data corrupted—clear o-data
Piston switch faulty—replace piston
Bottom Screen in brewing chamber loose, pushing slider up
Cable to Step motor faulty - replace cable
Step Motor Faulty (Slowly turn motor to feel for flat spot)
6
Slider hits the side of Tamp broadside, high pitched whine, or
Piston counts o-data before reaching top of travel
Cable to Step motor faulty (most likely)
O-data corrupted—clear o-data
Socket Pin on step motor bent, Step motor driver board bad
Slider stops halfway — DP5
Slider Reed Switch Socket Pin loose - Reed switch faulty
Slider motor Socket Pin loose
Slider stops halfway on 3rd sweep of start-up cycle — DP5
Spray Screen loose, screen dragging on lower edge of Slider
Slider had no bounce back, stops dead, DP32 after clear 0-data
Slider reed switch shorted
Piston rapidly reverses direction at end of travel
(zoop, zoop sound)
O-data corrupted
Clearing o-data or start-up with coffee in chamber (DP 7)
Clear coffee and try start-up again
Line pot Cable disconnected
Line Pot wire broken - check reading in reference
DP 13, No flow from spout
Screen in Tamp or bottom of brew chamber clogged
Run brew Valve in “handling” to test flow
Disconnect brew line from bottom of brew chamber and
check flow again
Clog in “Y” at back of spout
33
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Clearing a Stuck Puck
Page 1 of 2
A stuck puck may show up as one or more of the
following codes:
DP4 DP5 DP7 DP20&21 DP26&27 DP32
Section 6: Troubleshooting
Cafina c60 Service Manual
Coffee grounds that fail to eject from the brewing chamber is the most common
cause of machine failure. This is usually caused by lack of regular cleaning. The
machine will make several attempts to clear the chamber on it’s own by displaying
“switch machine OFF and ON” prompts.
MANAGER
Key to Service
Remove Top Cover to
watch piston
(Service)
ON
OFF
Set electromagnet to 1
Then Press next
Select Handling
product data
pump
filler cover
handling
electromagnet 0/1
0
END
>
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
1
s
piston up
0/1
protocol
temperature
Press Piston up
piston down
0/1
bypass valve
0/1
0
next
>>
slider in
2
slider out
0
next
s
c60
4
3
>>
c60
s
Did inner piston bring puck up?
Yes:
No:
Press slider in then slider out to eject puck
Unplug machine and manually scoop chamber out (don’t
scratch sides!)
Check for coffee grounds on underside of lower piston
plate.
Clean and vacuum out machine if necessary.
Lube inside of chamber with Windex, 409 or a similar
cleaner (All traces of cleaner can be rinsed away with a
cleaning cycle.)
Plug back in and allow to go through Startup
34
Clearing a Stuck Puck
Clearing a Stuck Puck
Page 2 of 2
Section 6: Troubleshooting
It is not necessary to remove the piston from the machine.
Cafina c60 Service Manual
The Dispensing Spout panel may have to be removed to clean
the Electromagnet area.
Unplug the machine first to prevent unexpected piston movement!
6
Move the Tamp up
and out of the brewing
chamber by turning
the large sprocket
counterclockwise
Vacuum or clean tamp,
slider and brewing
chamber area as needed
Remove stuck grounds from
inside of brewing chamber
Be careful not to scratch
chamber walls
Wet the inside of brewing chamber with
Windex, 409 or a similar cleaner.
Michaelo Espresso
(All traces of cleaner will be rinsed
3801 Stone Way N.
away with a cleaning cycle.)
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Electromagnet
Push disk up to manually eject
coffee from chamber If it doesn’t
eject in “handling”
Check for coffee grounds
Clean disk and underside of
lower plate. Coffee here will
prevent the electromagnet from
ejecting the puck
© 2003 Michaelo Espresso,
Inc. All rights reserved.
35
Check Water Flow from Brew Valve
Page 1 of 1
Section 6: Troubleshooting
Cafina c60 Service Manual
Times the water flow from the Brew Valve
before it goes to the Piston
Use if the System test is over 8 seconds to isolate the location of the clog
Remove the Spout Panel
Brew Valve
Disconnect the line to the
bottom of the brew chamber
Turn Key to Manager
Press shift twice
to display System Test
Double*
start
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Run System test
while holding the line
pointed into the drip-tray
>>
actual time 4.5s
136
65ml
c60
s
If actual time returns to normal the problem is a clog in
the Brew Chamber, Tamp or Spout
If actual time is still over 8 seconds then look for a clog
in the:
Flowmeter, Brew Valve, or Brew Boiler
© 2003 Michaelo Espresso,
Inc. All rights reserved.
36
Flowmeter (System) Test
Flowmeter (System) Test
Page 1 of 1
No Coffee water flow test
Section 6: Troubleshooting
Cafina c60 Service Manual
The System Test is used to make sure the water is
flowing freely through the machine before running reference or troubleshooting shot time problems
6
MANAGER
1
Key to Manager Position
ON
OFF
daily counter
protocol
water quantity
System
coffee quantity
Grinding
lock buttons
3
1.78
0
Select System
2
s
c60
s
c60
Press Shift twice
Water flow Time
4
Double*
start
Press Start
>>
actual time 4.5s
136
Flowmeter Pulse
Count
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
65ml
c60
s
Pre-set amount of water
4-6 seconds
6-8 seconds
8+ seconds
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Normal flow time for 65ml of water
Run several cleaning cycles and try again
Check water flow from Brew Valve
© 2003 Michaelo Espresso,
Inc. All rights reserved.
37
Steam Wand Backflush
Steam Wand Backflush
Page 1 of 1
Section 6: Troubleshooting
Cafina c60 Service Manual
A clogged Steam Tip is the most likely cause of weak
steam flow. Remove the Steam Tip by unscrewing
it from the wand and clean out the holes.
If cleaning the tip doesn’t restore good flow
try this cold water backflushing procedure:
NEVER leave the steam wand in the milk pitcher.
The milk will be sucked up into the wand and
may contaminate the boiler.
2
10 Second
pre-heat
3
2 Seconds On
10 Second Pause
Repeat 5 times
Technician only:
It may be necessary to
open the Steam Valve
to completely remove
the clog
5
4
1 Remove the Steam Tip
2 Fill a Milk Pitcher with cold water (Never use any cleaner!)
3 Heat the Steam Wand by running it for 10 seconds
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
4 Turn the Steam off and immediately insert the Wand into the
cold water
5 Run Steam again for 2 seconds then turn off
6 Wait 10 seconds for the water to be sucked up into the wand/
valve
7 Repeat steps 5 and 6 four to five times to soften and flush out
the clog
© 2003 Michaelo Espresso,
Inc. All rights reserved.
8 Refill the pitcher with fresh cold water and repeat if needed
38
Grind Time Check
Grind Time Check
Page 1 of 1
The condition of the grinder burrs is
monitored by watching the change in grinding time
for the reference drinks. The grind time increases as the
grinder burrs wear out. Worn burrs take longer to grind
the same amount of coffee.
Section 6: Troubleshooting
Cafina c60 Service Manual
6
The time displayed will always be the time of the last drink made.
V3.51 Software automatically displays the grind time of the last drink made on
page 3 in Manager mode (If Grind time doesn’t display in Manager, go to main
Reference page in service to see time.)
1
2
Select the Reference Drink you wish to check
and allow the machine to brew it. Reminder: The
Reference Drink name is followed by an asterisk.
Turn key to Manager position
MANAGER
Double*
Triple
ON
OFF
3
Single
Press Shift twice to view 3rd Screen of Manager
Mode and note the time recorded next to
Grinding.
Americano 12
Americano 16
c60
s
Default 1st page of drink menu
when machine is on
Manager Screen 3
protocol
Check each Grinder Separately
System
Grinding
time for
last drink
brewed
Grinding 1.78
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
s
Evaluating Grinder Burr Condition from the Grind Time Reading
FOR 14 GRAM DOUBLE SHOT*
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
New Burrs = less than 1.7
Normal Burrs = 1.2 - 2.25**
*
If Double Shot is not 14 Grams, call Michaelo for grind time range
**
If time = greater than 2.25 - Call Michaelo for advice
© 2003 Michaelo Espresso,
Inc. All rights reserved.
39
Technician Notes:
Page 1 of 1
Section 6: Troubleshooting
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
40
Bypass Valve Operation & Test
Bypass valve Operation & Test
Page 1 of 1
The Bypass Valve delivers hot
water from the Brew Boiler
directly to the Spout
Section 6: Troubleshooting
Cafina c60 Service Manual
The Bypass amount in Product Data is the amount of time the bypass
valve is open. At a 30% setting, the valve opens for the last 30% of the
drink flow. The first 70% of the water flows only through the coffee grounds.
When the valve is open some of the water can flow directly to the spout.
1% bypass is added to all
Espresso shots to flush the spout
at the end of the flow
MANAGER
1 Turn key to Service position
(Service)
ON
6
OFF
product data
pump
00/1
protocol
filler cover
00/1
handling
electromagnet 0
0/1
temperature
bypass valve 0/11
next
next
>>
c60
2 Select Handling
>>
c60
s
s
3 Switch valve ON
Water should dribble from the spout when the Valve is switched ON
No Water flow from Spout?
Check that Solenoid Coil is Energizing
Check Elbow from Bypass Valve for clog
(Remove Elbow and clean .4mm nozzle)
Check for clog in Tube to Spout
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Bypass Valve 2603052
Bypass Elbow 2403184
© 2003 Michaelo Espresso,
Inc. All rights reserved.
41
Technician Notes:
Page 1 of 1
Section 6: Troubleshooting
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
42
Grinder Adjusting Motor Test
Grinder adjusting Motor
Page 1 of 1
The grinder adjusting motors change the
coarseness of the grind by turning the grinder
collar through a worm gear.
Section 6: Troubleshooting
Cafina c60 Service Manual
6
The motors can be tested in the Handling section:
MANAGER
(Service)
ON
Grinder 1/2
1
Select grinder 1 or 2
OFF
grinder
Key to Service mode
start
grinder fine
Select “Handling”
grinder coarse 0
END
Press “next” 3 times
>
c60
♦
♦
♦
Press fine or coarse while
listening to the motor
s
Watch the grinder
collar to see if it
moves evenly!
A good motor will make a firm whirring sound as it operates.
A weak motor will make a gravely sound.
It may turn the collar slowly or unevenly.
A broken motor will make a clicking sound
Checking the motor out of the machine:
Remove the Hopper
Remove the Grinder Adjusting Motor with its bracket
You should feel a firm even
resistance as the gears turn.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
♦
A new motor will have a firm feel
and make a whirring sound.
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
♦
A used motor may have a looser
feel and make a louder gear
sound.
♦
A defective motor will feel loose
and uneven or gravely. It may
also have a loud sound.
Turn the worm gear
Slowly with pliers
Grinder Adjusting Motor 2253656
43
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Line Pot Test
Page 1 of 2
Section 6: Troubleshooting
The Line Pot is a potentiometer that sits on top of
the Piston Assembly directly over the Tamp.
The Line Pot measures the force used to tamp
the coffee and the quantity of coffee dosed into the
brewing chamber.
Cafina c60 Service Manual
Wiggle plug during test
Reading shouldn’t change from 0
Line Pot will read about –14 if unplugged or
broken wire
Check for broken wires
MANAGER
A broken wire or plug pin will
cause the piston to suddenly
reverse direction with a zoop
sound. Usually followed by a
DP7
(Service)
ON
OFF
product data
protocol
handling
temperature
0
next
>>
Press next
s
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
set cleaning
filter
product names
run reference
next
Select run reference
0
>>
c60
s
© 2003 Michaelo Espresso,
Inc. All rights reserved.
44
Line Pot Test
Line Pot Test
Page 2 of 2
Section 6: Troubleshooting
Cafina c60 Service Manual
***REFERENCE***
6
Double*
Double D**
delete
0
line pot
-1
c60
s
Set Line Pot between -3 & +3
Line Pot adjustment is on back of ICU board, behind
the front panel, directly above the keypad buttons
(Caution: adjuster is Fragile)
Run the Piston all the way down by hand
***REFERENCE***
• Turn the large sprocket clockwise
Double*
• Turn it hard about 1/4 turn further after
Double D**
the Tamp touches the bottom of the
chamber
delete
• Line Pot reading should change to
0
line pot
80-100 and then return to 0 when the
sprocket is backed off to release the
pressure
87
c60
Should change
Up to 80-100 when tamp
is forced down
Apply pressure and release
s
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Wiggle plug, if Reading
changes 3 or more check
for loose wire at plug
© 2003 Michaelo Espresso,
Inc. All rights reserved.
45
Piston Switch
Section 6: Troubleshooting
Cafina c60 Service Manual
The Piston Switch sets the “home position”
of the piston.
It also signals if the Tamp is in the brewing chamber.
The most common switch failure causes the slider to hit the bottom edge of the Tamp
Coffee pucks stuck in the chamber or coffee grounds under the piston assembly
will prevent the piston from moving all the way down and may give piston switch DP
codes.
Piston Switch mechanical test:
Tamp
1. Raise piston by hand
2. Press roller with finger,
switch should click
on and off.
3. Raise and lower the piston
by hand to verify that the
switch clicks when the
motor housing touches it
4. A single drop of water may
free the plunger if it is
stuck. (Follow with a drop
of WD-40.)
Piston Switch electrical test:
1. Raise piston by hand
2. Unplug main plug
3. Measure resistance
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
between the top center pin
and the pins on either side
4. Resistance should toggle
from infinite to less than 2
5. Switch is bad if there is any
hesitation in the readings
(ie. hangs up on 6 for an
instant)
Plunger
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Normally
Open
Common
Normally
Closed
© 2003 Michaelo Espresso,
Inc. All rights reserved.
46
Reading DP Codes (Protocol)
DP Codes
Page 1 of 3
More than 5-10 occurrences of a code
will indicate an area of the machine that
needs closer evaluation.
Section 7: DP Codes (Protocol)
Cafina c60 Service Manual
The DP codes (diagnostic codes) are a record of faults
that the Cafina has recorded since the last service call. It is
important to remember that the codes only show symptoms.
They don’t always point directly to a problem. It is normal to
see a some codes in the memory, they are a record of the self
correcting actions of the machine.
7
MANAGER
Turn Key to the Service position
(Service)
ON
OFF
Select protocol from 1st screen
product data
The program will cycle through and
check each DP code
protocol
handling
temperature
next
c60
If the program stops, record the DP
code and number of occurrences.
Number of
occurrences
>>
s
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
- - protocol - DP10
Press next to continue.
no water
At the end of the cycle Delete the
DP codes to prevent old codes from
accumulating in the counters
next
14
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
>>
c60
s
Sample DP Code
© 2003 Michaelo Espresso,
Inc. All rights reserved.
47
DP Codes
Page 2 of 3
7
Read out all the codes in Service/Protocol section
Remember the codes only show the symptoms, not the problem
DP #
Message Given
Refill Hopper
(See DP 8)
DP 01 24V supply
Problem
Beans jammed
Grinder overheated
Switch off/ on, check
F4 fuse or
Replace Power Board
DP 03 Piston Switch
always Closed
Piston not moving up,
No 24v on ICU J11 pin
2 with piston up
Piston not completely
down,
Stopped before piston
switch
Slider jammed
Slider hits tamp
DP 04 Piston Switch
always Open
DP 05 Slider switch
always Open
DP 06 Slider switch
always Closed
Slider is not moving or
binds at end of travel.
Reed switch shorted
DP 07 No. compression Signal not found at
(Lin. Pot.)
right time
DP 08 Grinder 1
Quantity less
than set amount
DP 09 Grinder 2
Quantity less
than set amount
DP 10 No water
DP 11 No flow meter
impulses
DP 13 Infusion valve
(brew valve)
Not enough coffee in
chamber
Check
Stir beans, foreign object in hoper
Quality of beans or worn burrs
Jammed slider - Bent Grinder mounting
plate
Slider motor faulty, incoming voltage
spikes
Does plunger click when roller pressed,
Round Cable to Step Motor,
Step Motor Cable in backwards
Piston movement, piston switch,
slider jam
Round cable to step motor, stuck puck
Step Motor board overheated, add fan
Stuck puck, Piston switch erratic
Step motor cable or board, 24v always on
J11 pin 1
Coffee jam, Slider motor, Tamp
clearance, Back of slider drags on grinder
Reed switch, 24v never on J11 pin 1
Stuck Puck, Lin pot reading, Line pot
plug/ cable
Grounds under Piston, Clear O Data,
ohm piston switch
Pressing drink buttons after refill hopper
message
Jammed or worn grinder burrs
Grinder Chute misaligned
Coffee drop slow
No reading from sensor Water pressure and flows, Filters
Wiring to sensor on pump, J4 plug on
ICU
No flowmeter pulses
Flowmeter cable unplugged, bypass
with Brew and bypass elbow clogged (DP 13)
valves open
Clog in meter, J4 plug on ICU,
Filters restricted, Water shut OFF
Clog in: Coffee Filter Screen, Brew valve,
No flowmeter pulses
Spout, Tamp
with Brew valve open
Run flow meter test Check filters
48
DP Codes
After fixing problems related to piston movement,
the Piston may bounce or move erratically.
It may have lost count of the steps for the Step Motor.
See Instructions for Clearing O Data to reprogram.
DP #
Message Given
DP 20 Grinder 1
Quantity more
than set amount
DP 21 Grinder 2
Quantity more
than set amount
DP 26 Pressure
reached before
piston switch
DP 27 After DP 26
occurred twice
DP 28 Cleaning
program
interrupted by
failure
DP 30 Cleaning
completed
DP 31 Boiler level too
low
DP 32
DP 33
DP 34
DP 40
DP 41
7
DP Codes
Page 3 of 3
Problem
Too much coffee in
chamber
Check
Coffee drop slow, Grinder chute
misaligned
Clean chamber, Slider area
Too much coffee in
chamber,
Coffee puck stuck in
chamber,
Tamp finds pressure
before it clicks the
switch
Jammed piston,
Power failure
Coffee drop slow, clean brewing chamber
Is spent puck ejecting from chamber?
Electromagnet holding?
Clean underside of piston
Counts # of Cleanings
NO Powdered Cleaners, Check other
piston codes
1 cleaning tablet per cycle
Should be at least on Cleaning for each
day since last service
Steam boiler slow to fill Filters, Water flow to machine, Autofill
solenoid
Steam boiler takes more than 30 sec to
fill
Piston position
Piston fault code during Check for other piston related codes
start-up
Temp brew boiler No signal or high
Plug J13 wires on ICU loose
over 106 deg. C reading from Brew
Sensor disconnected/plug contact bad
Boiler Temp Sensor
Scale build up on Temp Sensor
Boiler high limit dirty, leaking mA to Grnd
Step motor
Plug in ribbon cable
Ribbon Cable to Step Motor Board, Bad
overheated
on top of step motor
Step Motor, Restricted Piston movement,
board!
Step Motor Board
External error
Can’t find external unit Change External to “0” in Manager Mode
Loss of data
Unplug and restart
Delete EEPROM, Replace EEPROM chip
49
Section 7: DP Codes (Protocol)
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
50
Service Mode
Service Mode
Page 1 of 3
Section 8: Service Mode
MANAGER
See the next section to
access the Service mode
without a Service key
Cafina c60 Service Manual
(Service)
ON
3
OFF
To skip the startup cycle:
Plug the machine back in with the key already in the Service position
or
Turn key from OFF directly to SERVICE (¾ turn).
8
Any programming changes made in Service Mode will only be saved if
the shift button is pressed before turning the key back to ON.
View and edit drink specifications
product data
View and reset Diagnostic Program (DP)
codes
protocol
handling
Control pump, piston, grinders, valves, and
chute cover manually
temperature
next
Set brewing water temperature
>>
Next page
c60
s
Set # of cycles prior to cleaning warning
set cleaning
Set and reset # of cycles prior to filter change
warning.
filter
Edit product names/symbols. Changing
names will delete product data!
product names
run reference
next
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(206) 695-4950
Fax (206) 695-4951
Set the fineness of grinding to obtain the
desired extraction time for reference drinks.
(see Reference Section).
>>
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
s
next page
Return to Service Page 1
© 2003 Michaelo Espresso,
Inc. All rights reserved.
51
Service Mode
Page 2 of 3
Section 8: Service Mode
Cafina c60 Service Manual
Grinder 2?
Used to Factory initialize the machine.
Changing will delete all product data
TURBO
Not used, set to 0 for all locations
self-service
Set to 0 for all locations
SERVICE
Enter telephone number to be displayed
when service is required
next
>>
next page
c60
s
Return to Page 1
Turn machine off
machine OFF
Resets Piston movement instructions. Turn
key OFF then ON to complete.
clear o data
Deletes all drink names, product data, o-data,
DP codes, and water temperature settings
Machine reverts to default settings
Never touch unless directed by a Michaelo
technician
EEPROM delete
next
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
>>
c60
s
next page
Return to Page 1
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
52
Service Mode
Service Mode
Page 3 of 3
Section 8: Service Mode
Cafina c60 Service Manual
EXTERNAL
Not used Set to 0 for all locations
layout
Not used
unit
Not used
enter prices
Not used
next
next page
>>
c60
s
Return to page 1
EXTERNAL A/B/C
Not used Set to “A” for all locations
language
Not used Set to “language for all locations
c60
8
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
s
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
53
Handling
Page 1 of 2
Section 8: Service Mode
Cafina c60 Service Manual
The Handling section is used to test the operation of
individual parts of the machine without having to run
complete cycles.
MANAGER
Key to Service Position
(Service)
ON
OFF
product data
protocol
handling
Select handling
temperature
next
>>
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
s
pump
00/1
ON / OFF
filler cover
00/1
OPEN / CLOSED - closes after 20 sec
electromagnet 0
0/1
ON /O
bypass valve
ON / OFF without pump
next
0/1
0
>>
c60
next page
s
Return to 1st Service made page
© 2003 Michaelo Espresso,
Inc. All rights reserved.
54
Handling
Handling
Page 2 of 2
Section 8: Service Mode
Cafina c60 Service Manual
piston up
Raise Piston
piston down
Lower Piston (4 sec delay before lowering)
slider in
Move Slider in (only with Piston raised)
slider out
Move Slider out
next
>>
next page
s
c60
Previous page
0
brewing valve 0/1
ON / OFF (only if piston is down)
0
pressing valve 0/1
ON / OFF (only if piston is down)
bypass valve 0
0/1
Open Bypass Valve and runs Pump
next
next page
>>
s
c60
grinder 1/2
grinder
Previous page
1
Select Grinder 1 or 2 for next 3 buttons
start
Grinds and ejects from selected grinder
grinder fine
run adjuster on selected grinder
grinder coarse
run adjuster on selected grinder
END
>
c60
8
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
piston returns to home position
s
Previous page
© 2003 Michaelo Espresso,
Inc. All rights reserved.
55
Service Mode Without a Key
Page 1 of 1
Section 8: Service Mode
Cafina c60 Service Manual
MANAGER
The SERVICE mode is the
unmarked 3 o’clock position of the
key switch. Only a #3 technicians
service key will turn to this position.
(Service)
ON #1
3
OFF
Use the operators Key to
“hot wire” the switch
1
Flip switch circuit board over
Switch circuit board in
installed position
2
G
G
3
1
2
1
3
0
0
Setting the Cafina to the SERVICE Mode without a Service Key
1. Remove the top cover.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
2. Remove circuit board from the back of the key switch by carefully pulling it
straight back. (circuit board carries only 5 volts DC and is safe to handle)
3. Turn the board over .
4. Briefly short the #3 terminal to the Ground terminal with the tip of the
operators key.
Machine will stay in SERVICE until circuit board is replaced.
To return to ON or MANAGER mode, carefully plug board back into switch.
G to #1 for ON
© 2003 Michaelo Espresso,
Inc. All rights reserved.
56
G to #2 for manager
Single
Double
Triple
Americano 12
Americano 16
Single D
Double D
Triple D
Americano 12 D
Americano 16 D
Double D
Double
Americano 12
1/2
1/3
1/4
1/5
2/1
2/2
2/3
2/4
2/5
4/1
4/3
4/5
Beverage Name
1/1
Button
Page/
57
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
2
Repetitions
1/2/3
Cups
1
# or
Grinder
1 or 2
0
1
1
0
0
0
1
0
0
0
0
1
0
Reference
2
0
0
2
2
2
0
0
2
2
2
0
0
Relieve
0
0
0
0
0
0
0
1
0
0
0
0
1
Infusion
Pre-
25
80
80
25
25
25
80
125
25
25
25
80
125
pression
Comp-
USA 3.51 CPU Default Programming
350
65
65
435
350
100
65
35
435
350
100
65
35
Quantity
Water
14
14
14
15
14
15
14
7.5
15
14
15
14
7.5
Quantity
Coffee
99%
1%
1%
99%
99%
30%
1%
1%
99%
99%
30%
1%
1%
By-Pass
14
14
14
14
Time
Dispensing
Product data Sheet
Product data sheet
Page 1 of 1
Section 9: Programming
Cafina c60 Service Manual
9
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Check Drink data
Page 1 of 3
The drinks are set by Michaelo Espresso to make
best use of the Cafina. Changing them may
adversely affect the machine performance.
Section 9: Programming
Cafina c60 Service Manual
•
•
•
•
Press the button next to the drink name to cycle through all available drinks
Set values for each drink to match values on product data sheet
You can only move forward through these screens
Press Shift to exit or start over
MANAGER
Turn key to Service position
(Service)
ON
OFF
product data
Select product data
protocol
handling
temperature
next
0
>>
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
s
Double*
1 or 2 cups
1
grinder
1
repetitions
10
next
>>
c60
Cycles through all the available
drink names
Switches to the next set of values for the
displayed drink. (4 screens for each drink)
s
© 2003 Michaelo Espresso,
Inc. All rights reserved.
58
Check Drink Data
Check Drink Data
Page 2 of 3
Section 9: Programming
Double*
Cafina c60 Service Manual
1 or 2 cups
1
Not Used (Caution: do not change)
grinder
1
Selects hopper
1 = Right hopper 2 = Left Hopper
repetitions
10
next
>>
Automatically repeats drink if set to more
than 1
9
s
c60
Screen 1
Sets reference beverage
(allows only one per hopper)
Backs off tamping pressure
halfway through shot
0 = OFF
1 = low
2 = medium
3 = high
Improves flow of espresso
shots over 100ml water
Double*
reference
1
relieve
0
pre-infusion
00
next
>>
s
c60
Screen 2
Extends the time water is
in contact with the coffee
0 = OFF
1 = 1.5 seconds
2 = 3 seconds
3 = 5 seconds
Used for shots of less than
40ml water
Double*
pression
85kp
Tamping pressure (80 KP = 30 psi)
waterquant. 65ml
Water Quantity
coffequant. 14gr
0
Coffee Quantity (max 18 grams)
next
>>
c60
s
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Select these to display adjusting screen
(see next page)
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Screen 3
59
Check Drink Data
Page 3 of 3
Section 9: Programming
Cafina c60 Service Manual
Sets amount of plain water added
at the end of shot to clear spout
Double*
bypass
1%
flow time
Opens shot time test page
Brews and times one shot
Pre-set time is changed only
on Run Reference age
14.0s
admixture
0s0
foam
0
Not used
s
c60
Screen 4
Sample Adjusting Screen
Tamp Pressure, Coffee and Water Quantities, Bypass amount
*WATER QUANT.*
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Double*
65ml
Current quantity
+5ml
0
Changes quantity
-5ml
c60
Locks in new value and
returns to product data pages
s
© 2003 Michaelo Espresso,
Inc. All rights reserved.
60
Change Drink Names
Change Drink names
Page 1 of 3
Section 9: Programming
Cafina c60 Service Manual
WARNING:
Making any changes to an existing drink name will delete all
Product Data for that drink.
9
MANAGER
1 Turn key to Service position
(Service)
ON
OFF
product data
protocol
handling
temperature
0
next
>>
Press next
s
c60
2
set cleaning
filter
product names
run reference
next
Choose product names
0
3
>>
c60
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
s
© 2003 Michaelo Espresso,
Inc. All rights reserved.
61
Change Drink names
Page 2 of 3
Use the first button to cycle through all drink lines and
stop on the one that you wish to change. (Drink will be
displayed on line 2)
Section 9: Programming
Cafina c60 Service Manual
There are two different ways to add or change a drink name:
1. Use the “search name” buttons to select a pre-programmed drink from the default memory.
(Software v3.51 has more usable drinks) “OFF” will produce a blank line on the menu.
2. Manually enter a drink name by pressing button next to the selected drink on line 2.
1. Select a Pre-Programmed Drink
Product button 14
Cycles through all 15 drink choices
Americano 12
Displays selected drink name on this line
(Drink shown is page 1, drink 4)
search name
<
search name
>0
Press these buttons to select a preprogrammed drink from default memory
select symbol
s
c60
Product button 13
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Americano 12
search name
<
search name
>0
Press this button to manually change
the drink name (see next page)
WARNING: The drink displayed on
line 1 will be deleted immediately
select symbol
c60
Changes drink icon
(Can be changed anytime without
affecting programmed name or data)
s
© 2003 Michaelo Espresso,
Inc. All rights reserved.
62
Change Drink Names
Change Drink Names
Page 3 of 3
Section 9: Programming
Cafina c60 Service Manual
2. Manually Enter Drink Name
A
9
Display
next
>
Moves cursor one space to the right
A-Z
Cycles through alphabet on selected space
characters/ 0-9 0
Numbers and other characters
capitols
Switches between capitols and lower case
s
c60
Sample Name Entering Screen
Espress
• Continue moving cursor to the right one space at a time
next
• Cycle through letters and characters at each space
until you spell the desired product name
>
a-z
• The cursor will not move backward. If you make a
mistake you must press Shift to start over
characters/ 0-90
capitols
c60
s
Press Shift to lock new name in
There will be no Product Data values for the new drink
Enter desired values in the Product Data Section.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
63
Section 9: Programming
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
64
Change grinder Burrs
Change Grinder Burrs
Page 1 of 5
Section 10: Maintenance
Cafina c60 Service Manual
Grinder burrs will typically last for over 50,000 single shots or
800-1000 lbs of coffee. The actual life of the Burrs will depend
on the type of coffee used and the operating conditions. (20,000—
30,000 or more on the machine counter is typical)
Burrs start out grinding between 1.4 & 1.9 seconds for a Double.
They are typically replaced when the Grinding time for a Double
reaches 2.5 seconds. (Call Michaelo for advice when grind time is over
2 seconds)
Worn burrs will cause inconsistent coffee extraction and may
eventually jam the grinder. The grinder may be jammed if the machine
gives repeated DP8‛s and you don‛t hear the grinder run.
Worn burrs may also cause additional heat buildup, which may cause
machine errors.
10
The Double* & Double D** reference drinks are used to
check the grind time for each grinder
V3.51 Software automatically displays the grind time of
the last drink made on page 3 in Manager mode
Burrs 2250163
Always replace burrs
as a matched pair
protocol
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
System
Grinding
1.78
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
c60
Page 3 Manager Mode
s
Displays the grind time of
the last drink made
© 2003 Michaelo Espresso,
Inc. All rights reserved.
65
Change Grinder Burrs
Page 2 of 5
Section 10: Maintenance
Cafina c60 Service Manual
Scoop as many beans as possible out of the
hoppers using a paper cup do not put your fingers
into the grinders!
Run drinks from the grinder you are going to
change until the screen reads “refill hopper”
Unplug the machine
Loosen the hopper screws
Be careful not to drop a
screw into the grinder
Unplug the wire connector
for the cleaning lid solenoid
Remove the hopper
and set aside
Remove the adjusting
motor and set aside
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Remove the adjusting
motor‛s 4mm Allen
screws
© 2003 Michaelo Espresso,
Inc. All rights reserved.
66
Change Grinder Burrs
Change Grinder Burrs
Page 3 of 5
Section 10: Maintenance
Cafina c60 Service Manual
10
Remove the Grinder Collar
Remove the center bolt from lower
burr holder with a 8mm socket.
Use a screwdriver to prevent the
burr from turning.
Set the center bolt aside.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Borrow a 5mm grinder mounting
screw to use as a puller to lift the
lower plate out. Be careful not to lose
the small drive pin in the lower plate.
© 2003 Michaelo Espresso,
Inc. All rights reserved.
67
Change Grinder Burrs
Page 4 of 5
Section 10: Maintenance
Cafina c60 Service Manual
Vacuum the coffee residue from
inside the grinder and thoroughly
clean the threads with a wire brush
Or Push the excess grounds out the
chute then wipe the inside clean
with a lightly oiled rag
Install the new burrs—tighten
screws firmly
Wipe the threads clean with a
rag lightly coated with WD-40 or
similar oil
Thread the mounting screw
through the back of the burr
holder to clean out the threads
Center bolt
Reinstall the lower burr holder:
Turn motor shaft so the hole
points to the spout.
Hold burr holder so that the pin
aligns with the spout.
Lower holder until seated,
it should rock slightly and not
scrape the sides when rotated
Remove puller screw and replace
center bolt.
Tighten the center bolt very
firmly
Holder should still turn freely
Align pin with hole
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Don‛t forget to
replace the grinder mounting
screw when finished
68
Change Grinder Burrs
Change Grinder Burrs
Page 5 of 5
Carefully screw collar back on
Do not cross thread! The grinder threads
are softer than the collar threads
Section 10: Maintenance
Cafina c60 Service Manual
10
Screw the collar down until burrs touch,
then back off 1/4 turn
Reinstall Adjusting motors
Do not force the screws,
the threads strip easily.
Switch screws from side to
side if one is hard to start.
Don‛t use a longer screw!
1/4
Plug the Adjuster back in.
If you accidentally strip an adjusting motor
screw thread, swap the grinders to bring fresh
holes into position. Do not use a longer screw.
Mark the stripped hole with a black arrow
Reinstall the Hopper, don‛t forget to re attach the
cleaning cover plug.
You Must Run reference with new burrs.
The collar setting is approximate and must
be reset to get an accurate shot time.
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
69
Grind Time Check
Page 1 of 1
Section 10: Maintenance
Cafina c60 Service Manual
The condition of the grinder burrs is
monitored by watching the change in grinding time
for the reference drinks. The grind time increases as the
grinder burrs wear out. Worn burrs take longer to grind
the same amount of coffee.
The time displayed will always be the time of the last drink made.
V3.51 Software automatically displays the grind time of the last drink made on
page 3 in Manager mode (If Grind time doesn’t display in Manager, go to main
Reference page in service to see time.)
1
Select the Reference Drink you wish to check
and allow the machine to brew it. Reminder: The
Reference Drink name is followed by an asterisk.
Single
Double*
MANAGER
2
Turn key to Manager position
Triple
ON
Americano 12
OFF
3
Press Shift twice to view 3rd Screen of Manager
Mode and note the time recorded next to
Grinding.
Americano 16
c60
s
Default 1st page of drink menu
when machine is on
Manager Screen 3
protocol
System
Grinding 1.78
Grinding time for last drink brewed
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
s
c60
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Evaluating Grinder Burr Condition from the Grind Time Reading
FOR 14 GRAM DOUBLE SHOT*
New Burrs = less than 1.7
Normal Burrs = 1.2 - 2.25**
*
If Double Shot is not 14 Grams, call Michaelo for grind time range
**
If time = greater than 2.25 - Call Michaelo for advice
© 2003 Michaelo Espresso,
Inc. All rights reserved.
70
Change ICU Board #2703501
Change ICU Board
Page 1 of 1
Section 10: Maintenance
• Unplug machine
• Disconnect all plugs from top of board
Cafina c60 Service Manual
Press locking tab and pull plugs straight back
Gently rock buttons ribbon cable and pull straight up
Open locking wings to remove gray ribbon cables
• Remove wires from retaining clip on right side
Caution:
• Remove ground wire
Adjusters are fragile.
Use a small Phillips head
• Disconnect 3” ribbon cable from left side of board
screwdriver and light
Open locking wings and rock connector out
pressure!
• Hold blue buttons and gray display ribbon cables out of
the way and lift board up out of rails
10
Adjustments for:
Ground
J4
J6
Water
Bu
Display contrast
J10
Steam
Button
Line pot
Display
Keypad sensitivity
J12
Line Pot
Retaining Clip
Keypad
Buttons
J13
J11
Auto fill / Brew temp
Piston
Reverse steps to install new board:
3” Ribbon Cable
•
•
•
•
•
•
•
Hold blue and gray display Ribbon Cables out
of the way while sliding new board onto nylon
rails
Reattach all connectors
Plug machine in, allow to go through start-up
Clear 0-data
Adjust Display Contrast
Adjust keypad buttons sensitivity
thump panel next to buttons to check
Set line pot to 0 in reference page
Run reference for both grinders
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
71
Flowmeter Service
Page 1 of 1
Section 10: Maintenance
Cafina c60 Service Manual
The fastest and easiest way to service the flow
meter is to remove the entire Flowmeter assembly
through the rear (non-operator side) of the machine.
Only two plumbing fittings need to be disconnected.
Removing the entire meter allows thorough
cleaning of the inlet & outlet ports
Flowmeter Service:
• Remove the 3 screws that hold the
cap in place
• Remove impeller and o-ring
• Unscrew the inlet tube from the back
of the meter body
• Check for obstruction in the small
inlet port
• Clean the port with a fine wire,
Careful not to enlarge the hole!
Screws 2300014
O-ring 2500015
Impeller 2700165
Inlet nipple 2403192
Nylon seal 2500059
Flowmeter Cable
2703595
Outlet nipple 2403182
o-ring 2503004
Flowmeter with cap 2703578
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Complete Flowmeter w/check
valve and copper tube
2253679
© 2003 Michaelo Espresso,
Inc. All rights reserved.
72
Flowmeter Removal:
1. Shut off water supply
2. Remover Top Cover, Sides & Back
Panel
3. Remove the electric plug from the top
of the Flowmeter
4. Disconnect the copper tube from the
rear of the lower boiler
5. Disconnect the flexible input tube
from the top of the pump
6. The complete Flowmeter assembly
can now be removed straight out the
back of the machine
Steam Boiler Replacement
Steam Boiler Replacement
Page 1 of 4
Hot Boiler:
Bleed Pressure First
Section 10: Maintenance
Cafina c60 Service Manual
10
Unplug Machine
Disconnect power
leads from boiler
Plug back in
Press water button
to bleed pressure
Check that steam
gauge reads 0
Remove Boiler:
Unplug Machine
Loosen the 4 Front
Panel Screws
Shut Off Incoming
Water Supply
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Disconnect Wire to
Autofill Probe
Disconnect Ground
Wires on Top and
Bottom of Boiler
Remove Connectors
from Valve Coils
Label for reassembly
73
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Steam Boiler replacement
Page 2 of 4
Section 10: Maintenance
4
Cafina c60 Service Manual
Disconnect vent Tube
5
3
Remove Clear Water Line
from Adding Valve
Disconnect U-Tube to 1.5 bar
Safety Relief Valve
Remove Tube with Safety attached
6
St
ea
m
Remove Coils from Adding
and Steam Valves
7
2
W
at
er
Unscrew delivery
tubes from Steam
and water valves
Leave water tube
attached if it is
copper
1
Remove Steam
Gauge
76
0
0
60
2
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
74
Unscrew tube
to Pressure Stat
and push aside
Leave other end
connected
Steam Boiler replacement
Steam Boiler replacement
Page 3 of 4
8
Section 10: Maintenance
Remove Steam and Water
valves
Water valve with Copper
delivery tube Should be removed after Boiler is out
Cafina c60 Service Manual
10
Steam
Adding valve
9
o-ring 2703003
Water
Insert silicon
tube through
top of Boiler
and siphon
water out
Unscrew the water inlet
drain any remaining water
by quickly inserting the
silicon tube into hole
Au
to
fil
l
10
11
To Remove Boiler:
Remove Bottom Mounting Screws first
Hold top of Boiler and remove top screws
When reinstalling Boiler replace top
screws first
75
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Steam Boiler replacement
Page 4 of 4
Section 10: Maintenance
Cafina c60 Service Manual
Machine may be plugged in for boiler testing before the
Piston has been installed
TURN KEY TO THE SERVICE POSITION BEFORE
PLUGGING IN WITHOUT PISTON
Install new boiler:
DO NOT CONNECT
POWER LEADS TO
ELEMENT WITH
BOILER EMPTY!
Plug machine back in
and allow boiler to fill
first
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Make sure drain manifold and solenoid plugs are pushed
to the left side
Lower boiler into place and loosely install the mounting
screws, top screws first
Position pressure stat tube in place, tighten fitting
Tighten mounting screws
Attach Autofill pipe
Install water-dispensing valve
Install Steam valve, Connect Teflon line first for new style
steam wand
Attach Steam gauge assembly
Attach Pressure relief/vent tube assembly; make sure
braided drain line isn’t pressed against boiler
Connect Adding valve clear water line; line should pass
between top mounting pads
Install coils on steam and adding valves
Attach plugs to coils, Steam valve plug should point up
and Adding valve plug should point to the display panel.
Connect ground wires on top and bottom
Connect Autofill probe wire
Turn on Water supply, check for leaks
Plug Machine in with the Key in the Service position
and allow to autofill
When autofill shuts off Unplug machine and connect
element power leads
Pressure stat should open between .9 – 1.2 bars
© 2003 Michaelo Espresso,
Inc. All rights reserved.
76
External Parts
External Parts
Page 1 of 1
Bean Hopper lid
2253016
Section 11: Parts
Cafina c60 Service Manual
Complete Bean Hopper
2253151
Cafina
Cleaning
Tablets
ONLY
11
Top Cover with Fan
2253860
Top Cover screw
2303083
Left Side Panel
2253713
Steam wand tube 2603024
Right Side Panel
2253714
Rubber Steam Wand
grip 2253380
Back Panel
2253715
Complete spout
2601003
Drip Tray Grating
2253103
Grounds Drawer
2253155
Steam/Water o-ring 2501016
5 Hole Commercial
Narrow Cone Tip
2253698
Water wand
tube 2601035
4 Hole Professional
Narrow Cone Tip
2604063
4 Hole Professional
Wide Cone Tip
2601031
Steam/Water o-ring 2501016
Water outlet short 2604005
Water screen 2404003
Water outlet tall
Water screen 2301023
Side Panel mounting Posts
Side Panel Frame Clips
Back Panel Screw
Back Panel Nut
Bolt for Legs
Short Leg
Long Leg with threaded hole
Plastic insert for Long Leg
Long Leg with threaded post
Leg leveling screw
1.5 Meter Braided Water Line
Sealing washer for Water Line
Drain Line
77
2301064
2301020
2303039
2301021
2303077
2253177
2253652
2303097
2254996
2304131
2402067
2500055
DHOSE
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Brew Boiler Valves
Page 1 of 1
Brew and Bypass valves must always
be ordered with Elbows and Nipples
Replace delivery lines when replacing valves
Section 11: Parts
Cafina c60 Service Manual
Complete 12 Bar
Expansion Valve
2603065
Bypass Line to Spout
2403197
Brew Valve w/coil
2603071
Bypass Valve
2603070
Brew Valve Elbow
2403183
Bypass Elbow .4mm
2403184
Bypass Nipple
2403255
Valve Manifold
2403173
Teflon Brew Valve Lines
2403196
Plunger W/spring
3 Way 2603074
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Plunger W/Spring
2 Way 2603073
Brew Boiler Outlet 2403209
o-ring to Brew Boiler 2503004
Old Style Valves will be sent until current supply is used up:
Brew Plunger
2601053
Bypass Plunger 2600022
Spring 2600030
o-ring 2500012
Brew Valve Elbow
2403183
Bypass Valve
2603052
Brew Valve 2603053
© 2003 Michaelo Espresso,
Inc. All rights reserved.
78
Brew Boiler and Flowmeter
Brew Boiler and Flowmeter
Page 1 of 1
Rebuilt Brew Boiler 2253659
Section 11: Parts
Cafina c60 Service Manual
Brew Boiler Temp
Probe 2701087
o-ring 2502014
Flowmeter Cable
2703595
11
Screws 2300014
Flowmeter Cap
2701395
Brew Temperature Cable
2703591
O-ring 2500015
Impeller 2700165
Duel Ceramic High Limit
Replace if corroded 2703567
Inlet nipple 2403192
Nylon seal 2500059
Outlet nipple 2403182
o-ring 2503004
Copper pipe to boiler 2403193
Flowmeter with cap 2703578
Line
Pump to Flowmeter
2403212
Line to Gauge 2403203
Complete Flowmeter w/copper
pipe and check valve 2253679
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Water Pressure Gauge
0-25 bar 2603001
© 2003 Michaelo Espresso,
Inc. All rights reserved.
79
Steam Boiler Valves/Tamp Sealing Valve
Page 1 of 2
Steam Valve 113
Section 11: Parts
Cafina c60 Service Manual
1
Adding Valve
Plunger W/Spring
2 Way 2603073
2
Steam Valve Nipple
2403181
Adding Valve Elbow
2403177
Steam Valve
body w/coil
2603056
Steam Plunger
2600056
Longer Spring
2600028
Adding Valve body w/coil
2603070
Adding Valve Nipple
2403178
Water Valve 317
o-ring 2503004
o-ring 2503003
Steam Valve Elbow
2403169
o-ring 2503004
Water Valve Nipple
2403182
Water Plunger
2600021
Short Spring
2600029
1
2
Water Valve Elbow
2403169
Water Valve
body w/coil
2603055
Sealing Valve:
Inflates the Orange Ring on the Tamp to seal Brewing Chamber during extraction
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Complete Tamp Sealing Valve
w/nipples & coil 2253670
Line to Tamp
2403206
Sealing Valve
Nipple 2400058
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Sealing Valve
Elbow 2400071
Line from Pump
2403198
Sealing Valve body w/coil
2603068
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Plunger W/spring
3 Way 2603074
80
Steam Boiler Valves
Steam Boiler Valves
Page 2 of 2
Rebuilt Steam Boiler 2253662
Section 11: Parts
Cafina c60 Service Manual
Adding Valve Complete w/
Nipples & coil 2253669
11
Steam Valve Complete
w/Nipples & coil 2253674
Teflon
Steam/Water Line
2403246
Steam Gauge 2600076
Pipe to Gauge 2403186
Water Valve Complete
w/Nipples & coil 2253675
Plunger W/Spring
2 Way 2603073
Autofill Valve Complete as shown 2253668
Autofill Valve body w/coil
2603070
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Autofill Elbow
2403171
Copper line to Boiler
2403036
Autofill Nipple
2403172
O-ring 2503003
© 2003 Michaelo Espresso,
Inc. All rights reserved.
81
Front Panel Parts
Page 1 of 1
Section 11: Parts
Cafina c60 Service Manual
Display 2703111
Key Switch Cable
2703011
Keypad 2703002
Backlight Plugs
into the cable
from J39
Key Switch
2703010
Steam Button
2703006
Plug into J10
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Operator Key 2703092
© 2003 Michaelo Espresso,
Inc. All rights reserved.
82
1
Water Button
2703007
Plug into J6
Manager Key 2703093
2
Front Panel
2253717
Service Key 2703094
3
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Boiler Safety Valve System
Boiler safety Valves
Page 1 of 1
Section 11: Parts
Rebuild Parts shown in Italics
Steam Boiler vent
2403207
Cafina c60 Service Manual
11
Complete Steam Boiler
Safety valve 2603066
2501027
2601062
2500012
2501037
1.5 bar
Valve Seat 2603061
Flat Seal 2500062
o-ring 2503004
Spring 2253671
Steam Boiler
Vacuum Break
Complete
2603050
Notch on silver
ring faces down
underneath dual
springs
12 bar
Complete Brew Boiler
Expansion Valve
2603065
Hose Manifold
2403208
o-ring
2503033
Flat Seal
2503031
Valve
Seat
2603059
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Brew Valve
Exhaust Vent tube
2403196
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Order both Complete Valves,
Hose manifold and Steam
Boiler Vent to convert from
old style system
Cut Slits to insert
Vent Lines
83
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Water Lines/Chutes
Page 1 of 1
Section 11: Parts
Cafina c60 Service Manual
Grounds Chute
2253089
Screw 2300013
Washer 2301062
Puck Chute & Switch
Always Together
2253087
2703391
Screw 2300013
Washer 2301062
Complete Spout
With backing plate & screws
2601003
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Water Lines:
Tamp
Spout 2403031
Tamp Sealing Valve
Tamp 2403206
Brew Valve
Piston or Drain 2403196
Bypass Valve
Spout 2403197
Pump
Autofill Valve 2403211
Pump
Tamp Sealing Valve 2403198
Pump
Flowmeter 2403212
Flowmeter
Gauge
2403203
Pump
Adding Valve
2403199
84
Grinder Parts
Grinder Parts
Page 1 of 1
Section 11: Parts
Complete Grinder
2253665
Cafina c60 Service Manual
11
Grinder Burrs
2250163 (pair)
Burr Mounting Screw
2300041
Lower Plate Mounting Screw
2300018
Pin
2301056
Grinder Adjusting Motor
2253096
Lower Plate W/pin
2253021
Screw
2300015
Capacitor with cable
400v 2703306
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Washer
M6 2300087
Mounting Screw
M6X30 2301077
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Screw 2302033
Cable 2703643
New Style
Capacitor
2704007
Bracket 2253731
© 2003 Michaelo Espresso,
Inc. All rights reserved.
85
Pump
Page 1 of 1
Section 11: Parts
Cafina c60 Service Manual
Water Pressure Sensor 2702062
Braided Water Line 2402067
Teflon Washer for water line 2500055
Complete Pumphead
Replacement Parts:
Pumphead 2253105
Pump Nipples 2403195
Nipple o-rings 2500018
Pump Drive Coupling 2253106
Mounting Ring 2253107
Mounting ring Screw 2300019
Pump Motor 2253647
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
Inlet Manifold 2403194
Pump - Tamp Sealing Aalve 2403198
Pump - Autofill 2403211
Pump - Adding Valve 2403199
(top of stean boiler)
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Outlet Manifold 2403202
Pump - Flowmeter 2403212
© 2003 Michaelo Espresso,
Inc. All rights reserved.
86
87
Sealing
Spray
Sealing
Ring
Bleeder Screw
Brew
Check Valve
12 bar
safety
Spout
Brew
Boiler
Flow Meter
Pump
Gauge
Bypass
DIAM. 0.4
Pump
Water
Sensor
1.5 bar
safety
Autofill
Steam
Boiler
Vacuum Break
Incoming Water
Adding
Pressure
Stat
DIAM. 1.5
Steam Gauge
TEA
Tea
STEAM
Steam
Section 11: Parts
Cafina c60 Service Manual
11
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
Section 11: Parts
Cafina c60 Service Manual
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
© 2003 Michaelo Espresso,
Inc. All rights reserved.
88
Heating Element Wiring
Heating Element Wiring
Page 1 of 1
Section 12: Electrical
Cafina c60 Service Manual
Steam Boiler Element
(not field replaceable)
3300 Watts,13
12
High Limit
PSTAT
;
/
/
24v DC
Solid State Relay
SSR1
#2701220
240v
/
/
208-240
Volt Supply
25A
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Brew Boiler Element
(not field replaceable)
2000 Watts, 22
Dual Ceramic
High Limit 2703567
(replace if corroded)
© 2003 Michaelo Espresso,
Inc. All rights reserved.
89
Valves / Piston wiring
Section 12: Electrical
+24v DC
Cafina c60 Service Manual
J45
Valve ground pins will read 24v DC with valve
OFF and 0v when valve is on
J45
3
7
Y7
Water Valve
Y8
Adding Valve
Y9
Steam
Y10
AutoFill
2
6
10
9
J64
8
4
J46
J46
Piston Plug Socket on Piston
2
Brew Boiler
Solid state relay
1
J11
12
Counter
11
3
Cleaning Cover
7
LED
4
8
Plug on ICU Board
Bypass Valve
Y4
Tamp Sealing Valve
Y3
Brew Valve
13
9
15
J44
J43
Y5
10
24v DC test points
J47
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
J47
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
J11
24v DC here when
piston is up
J64 Piston Plug
6
10
5
11
1
4
2
3
3
6
4
7
2
2
1
8
3
12
© 2003 Michaelo Espresso,
Inc. All rights reserved.
90
Electromagnet
Piston Switch sends
24v DC to brew Valve
M
Slider
Motor
Slider Reed Switch
ICU Plug Wiring
ICU Plug Wiring
Section 12: Electrical
Keypad Buttons
Mylar Ribbon Cable
check if buttons don’t work
Cafina c60 Service Manual
J13
1
Keypad Button Sensitivity
Brew Boiler
Temp Probe 2701087
o-ring 2502014
12
2
Do not
change
J13
Line Pot Adjustment
3
Steam Boiler
Level Probe
2703028
Autofill Probe / Brew Boiler Temp
Sockets on ICU Board
J12
J11
Line Pot
8
“Grounds Drawer
Missing”
reed switch
5
Grey Ribbon Cable to Display
7
Display will be blank or show lines if
plug is wet, dry plug then
switch key OFF/ON to restore display
Puck sensing
switch on puck
chute
4
1
Slider reed switch
3
Display Contrast
Adjustment
J64
2
2
J11
From piston switch
J4
J10
Steam Button Plug
Button - 2703006
6
5
Water pressure sensor
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
3
2
24v DC
J6
1
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Water Button Plug
Button - 2703007
J4
Flow Meter plug
© 2003 Michaelo Espresso,
Inc. All rights reserved.
91
Left
Grinder
Right
Grinder
Section 12: Electrical
Cafina c60 Service Manual
Grinder 2
Grinder 1
J35
J34
F2
Relays for Old
Style Board:
Grinder 2
J35 pin 2
Grinder 2
J35 pin 1
Grinder 1
J34 pin 2
Grinder 1
J34 pin 1
F6
J39
RE1
F7
J31
J49 Transformer
Secondary outputs
F5
F4
U3
U4
J48 Grinder
Adjuster Motors
Fuses:
F1 trans 3.15A
F2 FAN .5A
F4 24v dc 6.3A
F5 display/ LED 1.25A
F6 display 100mA
F7 5v dc 1.25A
U3 Grinder Adjust
Motor Drivers
J45
J46
U5
U7
U8 Relay drivers:
Pump, Electromagnet, Brew
Boiler relay, Counter, Grinders
U8
U6
U6 Solenoid Driver
Steam, Tea &
Adding Valves
Main
Ground
J45
U7 driver
Autofill valve
Cleaning tablet cover
Cable to
Step Motor
Board
J47
U5 Solenoid
Driver
Brew Valve
Bypass valve
Brew Boiler
relay
J 46
92
Note
Jumpers
2703649
J33
J37
Pump
J36 pin 2
Pump
J36 pin 1
F1
J31 Power In
to Transformer
through F1
U4 Slider
Motor Driver
(silver sink
heat)
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
J37
FAN
J36
J36 Pump
J39 Display
Backlight
© 2003 Michaelo Espresso,
Inc. All rights reserved.
J50
J50 Out to
Transformer
Display Backlight
Relay
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
J33 Main
Power in
Power Distribution Board
Cables
Cables
Section 12: Electrical
Flowmeter/Water Pressure 2703595
J4 on Powerboard
Flowmeter
Water Pressure Sensor
Main Piston Cable 2703597
Piston Plug
J47 on Powerboard
Puck Switch
Grounds Drawer Switch
Cafina c60 Service Manual
J11 on ICU
12
Brew Temperature/Autofill Probe 2703591
J13 on ICU
Brew Boiler Temperature Sensor
Autofill Probe
Line Pot Cable 2703036
J12 on ICU
Line Pot on Piston
Steam Boiler Valves 2703598
J45 on Powerboard
Brew Boiler Valves 2703599
J46 on Powerboard
Steam Valve Y9
Water Valve Y7
Adding Valve Y10
Autofill Valve Y10
Brew Valve Y3
Bypass Valve Y5
Tamp Sealing Valve Y4
Mechanical Counter
Cleaning Door/Brew Boiler SSR
Grinder Adjusting Motors 2703593
J48 on Powerboard
Regular Grinder Adjuster
Decafe Grinder Adjuster
Step Motor Round Driver Cable 2703048
Step Motor (black jumpers)
J21 on Driver Board
Michaelo Espresso
3801 Stone Way N.
Seattle, WA 98103
(800) 545-2883
(206) 695-4950
Fax (206) 695-4951
Powerboard to ICU 3” Ribbon Cable 2703033
Step Motor Ribbon Cable 2703042
J41 on Powerboard
J22 on Step Motor Driver Board
© 2003 Michaelo Espresso,
Inc. All rights reserved.
93