Download Airstream PNEG-343 Clothes Dryer User Manual

AIRSTREAM GRAIN CONDITIONING SYSTEMS
DRYER OPERATION
1 9 9 4
AND
SERVICE
MANUAL
PNEG-343
1300 SERIES
THREE FAN PORTABLE
DRYER MODELS
1
2
1300 SERIES DRYER OPERATION AND SERVICE
TABLE OF CONTENTS
Warranty.......................................................................................................................4
Safety First...................................................................................................................5
Safety Alert Decals.......................................................................................................6
Safety Precautions.......................................................................................................7
Dryer Control Panel Featuring The Electronic Monitoring Control................................8
Safety Circuit Shutdown Messages.....................................................................13
Dryer Pre Start Checks...............................................................................................14
Pre Season Inspection..........................................................................................14
Dryer Start Up & Operation.........................................................................................18
Continuous Flow And Continuous Batch Start Up Procedures............................18
Continuous Flow Metering Roll Settings...............................................................19
Fan & Heater Switch Settings...............................................................................22
Batch Timer Settings............................................................................................23
Staged Auto Batch Timer Settings.......................................................................24
1300 Series Dryer Service Guide.....................................................................................25
Seasonal Inspection And Service.........................................................................26
Suggested Lubricants...........................................................................................27
Fan Propellor Removal And Installation...............................................................28
Fan Motor Removal And Installation.....................................................................29
Heater Parts Removal And Installation................................................................30
Metering Roll Servicing........................................................................................31
How To Determine A Metering Roll Problem.......................................................32
1300 Series Wiring Diagrams.....................................................................................33
Trouble Analysis Procedure........................................................................................44
Quick Reference Guide..............................................................................................49
Notes...........................................................................................................................50
3
1300 SERIES DRYER OPERATION AND SERVICE
Thank you for choosing an Air-
This manual describes the op-
or natural gas fuel supply, with
stream Grain Dryer. This dryer is
eration and service for all standard
either single phase 230 volt, or
one of the finest ever built. It is
production 1300 series three fan
three phase 220 or 440 volt elec-
designed to give excellent perfor-
grain dryers. These models are
trical power.
mance and service for many years.
available for liquid propane
WARRANTY
Grain Systems, Inc. warrants its
ity include special or consequential
changes at any time, without any
products to be free of defects in ma-
damages, or exceed the selling price
contingent obligations to purchasers
terial and workmanship. The only
of the product.
of products already sold.
obligation of the manufacturer is to
This warranty does not cover
All instructions shall be con-
repair or replace components which
products or parts which have been
strued as recommendation only.
have been submitted and found to
damaged by negligent use, misuse,
Because of the many variable con-
be defective within 24 months after
alteration or accident. Electric mo-
ditions in actual installation, Grain
installation. If so found to be defec-
tors, tires, and other components
Systems, Inc. assumes no liability
tive, the components will be repaired
supplied by outside manufacturers
for results arising from the use of
or replaced without charge, this con-
have separate warranties, from
such recommendations. Any alter-
stituting and entirely fulfilling the
those suppliers. This warranty is ex-
ation in design or operation of any
warranty obligation. Grain Systems,
clusive and in lieu of all other war-
Grain Systems, Inc. product must be
Inc. assumes no liability for ex-
ranties, expressed or implied. Grain
submitted and approved in writing by
penses incurred without written au-
Systems, Inc. reserves the right to
Grain Systems, Inc. before the al-
thorizations; in no event shall liabil-
make design or specification
teration is made.
Airstream Service Technician checks the wiring on a single module grain dryer.
4
SAFETY FIRST
Grain Systems, Inc.'s principle con-
stand safe operating proceedures
tions exist, and to inform all person-
cern is your safety and the safety of
and some problems which may be
nel associated with the equipment
others associated with grain han-
encountered by the operator and
or who are in the dryer area. Avoid
dling equipment. This manual was
other personnel.
any alterations to the equipment.
written with that thought in mind. We
As owner and/or operator, it is
Such alterations may produce a very
want to keep you as a customer.
your responsibility to know what re-
dangerous situation, where serious
This manual is to help you under-
quirements, hazards and precau-
injury or death may occur.
SAFETY ALERT SYMBOL
The symbol shown below is used to
call your attention to instructions
WARNING! BE ALERT!
concerning your personal safety.
Personnel operating or working around a
Watch for this symbol; it points out
dryer should read this manual. This
important safety precautions. It
manual must be delivered with equipment
means "ATTENTION", "WARNING",
to its owner. Failure to read this manual
"CAUTION", and "DANGER". Read
and its safety instructions is a misuse of
the message that follows and be
the equipment.
cautious to the possibility of personal injury or death.
SAFETY ALERT DECALS
A CAREFUL OPERATOR
Grain Systems, Inc. recommends
that you contact your local power company and have a representative sur-
IS THE BEST INSURANCE
vey your dryer installation so your wir-
AGAINST AN ACCIDENT
ing will be compatible with their system and you will have adequate power
supplied to your unit.
Safety decals should be read and
understood by all people in and
around the dryer area. If the following safety decals are not displayed
on your dryer, or if they are damaged, contact Grain Systems, Inc.
for replacement.
5
SAFETY ALERT DECALS
Three decals displayed on all Airstream Dryers. Belt drives, chain driven meter rolls
and combustible fuels must be treated with caution.
6
SAFETY PRECAUTIONS
1. Read and understand the operating manual before trying to operate the
dryer.
2. Never operate the dryer while the guards are removed.
3. Power supply should be OFF for service of electrical components.
Use CAUTION in checking voltage or other procedures requiring power
USE CAUTION
IN THE OPERATION
OF THIS EQUIPMENT
The design and manufacture of this
dryer is directed toward operator
safety. However, the very nature of
a grain dryer having a gas burner,
to be ON.
high voltage electrical equipment
4. Check for gas leaks at all gas pipe connections. If any leaks are
detected, do not operate dryer. Shut down and repair before further operation.
and high speed rotating parts, does
present a hazard to personnel which
can not be completely safeguarded
against, without interfering with effi-
5. Never attempt to operate the dryer by jumping or otherwise bypassing
any safety devices on the unit.
cient operation and reasonable access to components.
Use extreme caution in working
6. Set pressure regulator to avoid excessive gas pressure applied to burner
during ignition and when burner is in operation. See chart for operating procedures. Do not exceed maximum recommended drying temperature.
around high speed fans, gas fired
heaters, augers and auxiliary conveyors, which may start without
warning when the dryer is operating
7. Keep the dryer clean. Do not allow fine material to accumulate in the plenum chamber. Also occasionally clean the outside screens of the dryer.
8. Keep auger drive belts tight enough to prevent slippage.
9. Use CAUTION in working around high speed fans, gas burners, augers
and auxiliary conveyors which START AUTOMATICALLY.
on automatic control.
KEEP THE DRYER CLEAN
DO NOT ALLOW FINE
MATERIAL TO ACCUMULATE
IN THE PLENUM CHAMBER
OR SURROUNDING THE
10. Do not operate in any area where combustible material will be drawn into
the fan.
11. Before attempting to remove and reinstall any propeller, make certain to
read the recommended procedure listed within the servicing section of
the manual.
OUTSIDE OF THE DRYER
Continued safe, dependable operation of automatic equipment depends, to a great degree, upon the
owner. For a safe and dependable
12. Be certain that capacities of auxiliary conveyors are matched to dryer
auger capacities.
drying system, follow the recommendations within this manual, and
make it a practice to regularly in-
13. Clean grain is easier to dry. Fine material increases resistance to airflow
and requires removal of extra moisture.
READ THESE INSTRUCTIONS
BEFORE OPERATION AND SERVICE
SAVE FOR FUTURE REFERENCE
spect the operation of the unit for any
developing problems or unsafe conditions.
Take special note of the safety
precautions listed above before attempting to operate the dryer.
7
DRYER CONTROL PANEL
Figure 1: The grain dryer control panel with the Electronic Monitoring Control System in the upper right panel.
DRYER CONTROL PANEL FEATURING
THE ELECTRONIC MONITORING CONTROL SYSTEM
MOISTURE CONTROL
SWITCH
The control panel provides easy access
information regarding dryer operation.
to gauges and controls, and the illuminated switches provide a quick reference
MOISTURE CONTROL
THERMOSTAT
This switch turns the power on or
for every operating function. The patent
This electronic thermostat controls
off to the moisture control thermo-
pending Electronic Monitoring Con-
the moisture level of discharged
stat. It lights up when the grain col-
trol System is a computerized con-
grain by sensing grain column tem-
umn temperature is below the ther-
trol system that gives instant
perature.
mostat set point.
8
DRYER CONTROL PANEL
CONTROL POWER
SWITCH
FAN SWITCHES
ture control switch is on, and the dry
Each fan is turned on or off with
ing mode switch is turned to cont.
The power to the Electronic Moni-
this switch. The on position oper-
flow, the metering roll speed will op-
toring Control System is turned on
ates the fan continuously during
erate at the high speed metering roll
or off with this switch.
staged batch and continuous flow
potentiometer setting or turn off de-
modes. The auto position operates
pending on the control signal from
OUTSIDE LIGHT
the fan in staged batch during the
the moisture control thermostat. The
The dryer service light is turned on
dry and cool cycle. The switch will
discharge auger will operate when
or off here. It also may be set on
light up whenever the airflow
ever the metering rolls are operating.
auto, which turns the light on while
switch is sensing airflow and the
the dryer is running and off if a
dryer is full of grain.
• In both the 1 speed or the 2 speed
shutdown occurs.
position, if the moisture control
switch is off, and the drying mode
HEATER SWITCHES
DRYING MODE SWITCH
Each burner is turned on or off with
This is used to select staged batch
this switch. The auto position op-
or continuous flow drying. The
erates the burner in staged batch
switch will light only after the Elec-
during the dry cycle. The on posi-
tronic Monitoring Control System
tion will operate the burner only
has been turned on, the safety cir-
when the fan is running.
cuit is okay and the reset button
switch will light up only when the
on the control panel has been
flame sensor detects the flame.
The
pressed.
UNLOAD SWITCH
switch is turned to cont. flow, the
metering roll speed can be manually controlled by adjusting the
high speed metering roll potentiometer. The discharge auger will
operate continuously.
• If the drying mode switch is turned
to staged batch, the unload switch
should be set to the 1 speed position. The discharge auger and
LOAD AUGER SWITCH
The unload switch turns the meter-
metering rolls will only operate
This is used to select the opera-
ing rolls and discharge auger on or
during the unload cycle of the
tion of the fill auger. In both the
off, and selects the operation of the
staged batch operation, and the
auto and manual position the load
metering rolls.
speed of the metering rolls is adjusted using the high speed me-
auger will operate if the dryer is low
tering roll potentiometer.
on grain and will automatically shut
• In the 2 speed position if the moisture
off when the dryer is full. In the auto
control switch is on, and the drying
(Note: If the unload auxiliary
position only, the dryer will shut
mode switch is turned to cont. flow,
motor overload relay is being uti-
down after a preset period of time
the metering roll speed will alternate
lized in the dryer control panel, this
set on the out of grain timer, or if
between the high speed metering roll
switch will also control the opera-
grain flow is interrupted to the
potentiometer setting and the low
tion of the auxiliary equipment.)
dryer. The switch will light when-
speed metering roll potentiometer set-
ever the load auger is operating.
ting depending on the control signal
(Note: If the load auxiliary mo-
from the moisture control thermo-
LOW SPEED METERING
ROLL POTENTIOMETER
tor overload relay is being utilized
stat. The discharge auger will oper-
This is used to adjust the low speed
in the dryer control panel, this
ate continuously.
of the metering roll when the 2 speed
switch will also control the operation of the auxiliary equipment).
automatic moisture control feature
• In the 1 speed position, if the mois-
of the dryer is in use.
9
DRYER CONTROL PANEL
HIGH SPEED METERING
ROLL POTENTIOMETER
when the moisture control is not used.
flow, pressing the dryer power start
• Set the rate of grain discharge from
button and then turning on the de-
This is used to:
the dryer during the unload cycle of
• Set the high speed of the metering roll
staged batch dryer operation.
sired dryer component.
DRYER POWER
STOP SWITCH
when the two speed automatic mois-
DRYER POWER
START SWITCH
This switch stops all dryer func-
• Set the speed of the metering rolls
This switch starts and operates the
tions. If an automatic dryer shut-
when the one speed automatic mois-
dryer based on switch settings. If
down occurs, first determine and
ture control feature of the dryer is uti-
other switch settings are in the off
correct the cause of the shutdown.
lized.
position, individual dryer compo-
Then, press the dryer power stop
• Set the speed of the metering rolls
nents can be operated by turning the
button to reset the dryer before
during continuous flow operation
drying mode switch to continuous
restarting.
ture control feature of the dryer is utilized.
The Airstream Dryer Control Panel mounted on the dryer.
10
DRYER CONTROL PANEL
ELECTRONIC
MONITORING CONTROL
SYSTEM
SETTING THE DRY, COOL,
BATCH AND UNLOAD
TIMERS
if the dryer is stopped, these times
The Electronic Monitoring Control
These switches are used to set the cycle
continue timing down. The timers
System (Figure 2) controls all tim-
times in the staged batch drying mode
will return to their initial setting if
ing functions and safety circuit
only. The drying mode switch must be
the reset button is pushed.
checks. It is designed to simplify
in the staged batch position. The cur-
dryer operation by providing printed
rent setting on these three timers is dis-
messages and warnings on its liq-
played directly above each timer button.
SETTING THE OUT OF
GRAIN TIMER
uid crystal display (LCD).
To change the setting of these timers
If the dryer runs out of grain while the
follow these instructions:
load auger switch is in the auto posi-
1. Press the dry, cool or unload
tion, the out of grain timer automatically
TURNING ON THE
ELECTRONIC
MONITORING CONTROL
SYSTEM
timer button.
are saved by the controller. When
the dryer is restarted the timers will
shuts off the dryer after the period of time
2. Press the modify button.
preset on the timer. When pressed, the
Turn the control power switch to on.
3. Press the increase or decrease
display will show the amount of time left
The monitor will display a copyright
button to adjust the settings.
on the timer and the percentage of time
message and model number, total
4. Press the enter button.
used by the last load. A second screen
running time in hours and minutes and
During operation the remaining
will appear with the timer's setting, and
the current time and date. To activate
time on each timer is displayed on
may be modified as described in the
the controller press the reset button.
the screen. If the power goes out or
batch timer section.
Figure 2: The Airstream Electronic Monitoring Control System
11
DRYER CONTROL PANEL
The Airstream Electronic Monitoring Control System showing several different LCD displays.
SETTING THE LOAD AND
UNLOAD DELAYS
bushels dried on the third line. By
DRYER SAFETY CIRCUIT
pressing the bph/rpm/total bu but-
The Electronic Monitoring Control
The load delay is used to delay the
ton the second line will alternate
System continuously checks all
starting of the load auger when the
between the metering roll rpm's or
safety circuits on the dryer, and will
dryer is unloading to prevent the load
the bushel per hour rate. The to-
automatically shut the dryer down
auger from starting and stopping.
tal bushels dried reading is the to-
should a problem occur. The cause
The unload delay is used to control
tal since the bushel counter was
of the dryer shutdown will be dis-
the amount of time the unload au-
last reset. To reset the bushel
played on the LCD display, and a
ger runs after the metering rolls stop
counter, press and hold the reset
beeper will sound on the controller.
to allow for auger cleanout. Both the
button for five seconds. Press the
To restart the dryer after a safety
load and unload delays are set us-
enter button through the date and
shutdown, first correct the reason for
ing the same procedure as the tim-
time settings, and follow the in-
the shutdown, and then press the
ers. The aux 1 and aux 2 delays are
structions displayed on the LCD for
dryer power stop button to reset the
presently not being used.
resetting the counter.
circuit. Press the start button.
UTILIZING THE
BUSHEL COUNTER
In the batch mode, the first line
The Electronic Monitoring Control
of the LCD display tells which timer
System stores in its memory the time,
is being used, and the second line
date and cause for the last 25 dryer
When operating the dryer the LCD
switches between total batches,
safety shutdowns. To review this in-
display will show the dryer mode of
unload rpm or total bushels. The
formation, hold the reset button in for
operation on the first line, the bush-
third line indicates total dry time,
five seconds. The procedure for re-
els per hour or the metering roll rpm
and the fourth line is time remain-
viewing the safety circuit shutdown log
on the second line and the total
ing on the timers.
will be displayed on the LCD display.
12
DRYER CONTROL PANEL
SAFETY CIRCUIT SHUTDOWN MESSAGES
The LP gas vapor temperature sensor
LOWER ADJUSTABLE
GRAIN HIGH
TEMPERATURE
The metering roll drive system has
located in the gas pipe train downstream
An over temperature condition has oc-
failed to turn. A broken chain or
from the vaporizer, has opened indicat-
curred in the right side (left and right as
jammed metering roll is a possibility.
ing that the vaporizor is running too hot
viewed from behind the dryer) grain col-
and must be readjusted. This sensor is
umn causing the control to shut down
set at 200°F and automatically resets
the dryer. This control is adjustable
itself when cool. The message will dis-
from 80° to 220°F, and automatically
tinguish between burner 1 and 2.
resets itself when cool.
BURNER 1, 2 OR 3 VAPOR
HIGH TEMPERATURE
METERING ROLL DRIVE
SYSTEM FAILURE
RIGHT METERING ROLL
FAILURE
The right (as viewed from behind the
dryer) metering roll has stopped turning, or the sensor has been damaged.
BURNER 1, 2 OR 3 WARNING
FLAME NOT DETECTED
LOWER FIXED GRAIN
HIGH TEMPERATURE
The flame sensor has failed to de-
An over temperature condition has oc-
LEFT METERING ROLL
FAILURE
tect a burner flame indicating that the
curred in the left side (left and right as
The left (as viewed from behind the
burner has failed to light, there is a
viewed from behind the dryer) grain col-
dryer) metering roll has stopped turn-
problem with the flame sensing cir-
umn causing the control to shutdown the
ing, or the sensor has been damaged.
cuitry or the dryer is not getting
dryer. This control is set at 210°F and
burner fuel. The message will dis-
automatically resets itself when cool.
PLENUM 1, 2 OR 3 HIGH
TEMPERATURE
tinguish between burner 1 and 2.
MOTOR OVERLOAD
An over temperature condition has
FAN 1, 2 OR 3 HOUSING
HIGH TEMPERATURE
One of the thermal overloads on ei-
occurred inside the dryer plenum.
ther the fan, load, unload or auxil-
This control is a 300°F limit and au-
The temperature high limit located
iary motors has opened, indicating
tomatically resets itself when cool.
on the fan/burner housing has
an overcurrent condition. The over-
The message will distinguish be-
opened, indicating an over tempera-
loads must be manually reset.
tween plenum 1 and 2.
ture condition has occurred towards
the rear of the fan/heater housing.
OUT OF GRAIN WARNING/
UNLOAD CLEANOUT
AUXILIARY SAFETY
SHUTDOWN
This control is set at 200°F and must
The dryer has run low on grain, and
A shutdown has occurred due to an
be manually reset. The message will
the out of grain timer has timed out,
auxiliary installed safety feature.
distinguish between fan 1 and 2.
shutting the dryer down. The unload
FAN 1, 2 OR 3 FAILURE
NO AIRFLOW
BURNER 1, 2 OR 3 SHUTDOWN LOSS OF AIRFLOW
auger will clean out the dryer if it is
The contacts in the air switch have
opened due to insufficient airflow for the
12 VOLT POWER
SUPPLY WARNING
burner to operate. The message will dis-
The right circuit breaker on the input/
distinguish between fan 1 and 2.
tinguish between burner 1 and 2.
output board has tripped.
in continuous flow operation.
Contacts in the air switch have opened
due to the fan not turning, or the air switch
may need adjustment. The message will
GRAIN DISCHARGE
WARNING
L1 VOLTAGE LOST
FAN 1, 2 OR 3 CANNOT
START CHECK AIR SWITCH
The left circuit breaker located on
The air switch contacts have closed
The lid on the grain discharge box
the input/output board of the Elec-
prior to the fan starting, indicating a
has opened, indicating that grain is
tronic Monitoring Control System
freewheeling blade or improper set-
not being taken away fast enough
has tripped, or one of the hardware
ting of the air switch. The message
at the discharge box.
timers has shut down the dryer.
will distinguish between fan 1 and 2.
13
DRYER PRE START CHECKS
PRE SEASON INSPECTION
Before the dryer is filled, thoroughly
inspect the unit and check the operation of the dryer as follows.
INSPECT THE METERING
ROLLS
Open all metering roll access doors
and inspect each compartment for
any bolts, nuts or other foreign material, that may cause possible jamming of the metering rolls.
BEFORE ATTEMPTING TO
OPERATE THE DRYER MAKE
SURE ALL SAFETY SHIELDS
The Maxon safety shut off valve.
ARE IN PLACE, ALL BOTTOM
CLEANOUT AND REAR
ELECTRICAL POWER
POWER START BUTTON
ACCESS DOORS ARE CLOSED
Turn on the electrical power supply
Push the dryer start button, and all
AND ALL PERSONNEL ARE
to the dryer; set all circuit breakers
the selector switches on the control
to on, including the safety discon-
panel will be activated.
CLEAR OF THE DRYER
nect handle mounted on front of the
dryer power panel.
SET CONTROL SWITCHES
FUEL CHECK
CONTROL POWER
SWITCH
If using LP gas, make sure the tank
Turn the control power switch to on.
does not have a regulator mounted
The switch will light up. A copyright
to it. If using natural gas, make sure
Load Switch-OFF
message, model number, total run-
an adequate supply is available.
Unload Switch-OFF
ning time in hours and minutes, cur-
If using LP gas, slowly open the
Fan Switches-OFF
rent date and time will appear. At this
main fuel supply valve at the tank.
Burner Switches-OFF
point the controller will lock out all
If using natural gas, turn on the valve
Out of Grain Timer-8 MINUTE
other dryer functions. Once the date
along the supply line. Then, open the
Load Delay-30 SECONDS
and time appear, press reset and the
electronic shut off valve (Maxon
Unload Delay-30 SECONDS
dryer will perform its safety circuit
valve), if so equipped, or open the
Metering Roll Speed-LOW AND
check. If a fault is found, the cause
manual shut off valve on the dryer
HIGH SPEED SETTINGS PUT
will be displayed on the LCD. If all
to allow fuel flow to the dryer. In-
ON ZERO
are found safe, the controller will sup-
spect all gas lines and connections
Dry Timer-60 MINUTE
ply power to the electronic fuel shut-
for possible leaks.
Cool timer-20 MINUTE
off valve, if so equipped, and the dry-
Unload timer-10 SECONDS
ing mode switch will light up, indicat-
Mode Switch-CONTINUOUS FLOW
ing that the dryer is ready to be started.
Moisture Control Switch-ON
Moisture Control Thermostat-MAXIMUM TEMPERATURE
14
has plenty of fuel and that the tank
Any gas leaks must be fixed
immediately!
DRYER PRE START CHECKS
iary is wired to the dryer, it should start
and rotate in the proper direction.
MOISTURE CONTROL
THERMOSTAT
To check the moisture control thermostat leave the unloading switch
on one speed, and slowly turn down
the moisture control thermostat. As
the setting is decreased, the indicator light should come on and the metering rolls should stop operating.
The bottom auger will stop after the
30 second clean out delay, providing that the dryer is still being held
by the moisture control thermostat.
Rotate the moisture control thermostat up to its maximum setting. The
light should go off, and the metering
rolls should restart along with the
bottom auger if it has stopped.
TWO SPEED OPERATION
To check two speed operation move
The metering roll access area.
the switch to the two speed position,
set low speed on 200 and high
LOAD AUGER
played. Press the dryer power stop
speed on 600. Slowly turn the ther-
With the grain supply shut off,
button to reset the panel, then press
mostat until the moisture control
quickly bump the load auger switch
the start button.
switch light comes on. The meter-
to manual, and see if the load auger
ing roll speed is now controlled by
rotates clockwise as viewed from the
ONE SPEED OPERATION
drive end, or counterclockwise if the
To check one speed operation
mostat the other way until the light
dryer is a front load model. If the wet
place the unload switch in the one
goes out leaves the metering rolls con-
grain supply auxiliary is wired to the
speed setting. Turn up the high
trolled by the high speed dial.
dryer it should also rotate in the cor-
speed metering roll dial until the
rect direction at this time. Turn the
metering rolls start rotating. The
load auger switch to the auto posi-
bottom auger should rotate coun-
METERING ROLL
OPERATION
tion. The top auger and wet grain
terclockwise as viewed from the
To check the metering roll operation
supply auxiliary should run for one
drive end. The metering roll drive
turn either the low speed or high speed
minute, and then the dryer will shut-
motor should rotate clockwise as
knob clockwise, and the metering roll
down leaving the safety shutdown
viewed from the drive end of the gear
speed should increase. Turning ei-
message (out of grain warning) dis-
box. If the dry grain take away auxil-
ther knob counterclockwise will de-
the low speed dial. Turning the ther-
15
DRYER PRE START CHECKS
crease the speed. Make sure the
purge delay of approximately 10
fire pressure settings. Use the
drive chain tension is properly ad-
seconds. Gas pressure should be
pressure regulator for hi-fire and
justed and all sections of the meter-
shown on the gauge. At this time
the ball valve for lo-fire. The ther-
ing rolls rotate. Turn the unload switch
adjust the burner hi-lo fire thermo-
mostat should cycle between high
off after these checks are complete.
stat to 200°F, causing the burner to
and low, approximately 4 to 5 times
The bottom auger will continue to run
operate on hi-fire. This thermostat
per minute.
for 30 seconds after the switch is
is located on the front left side of the
turned off to allow for cleanout.
dryer. Observe the gas pressure on
Approximate settings should be:
LP Gas
Hi-Fire 6-15 lbs.
gauge, and turn the thermostat to its
Lo-Fire 2-6 lbs.
FAN SWITCHES
minimum setting, causing the burner
Bump each fan switch and observe
to cycle into lo-fire. As the burner
the fan rotation. The fan should run
thermostat is turned down the gas
If the burner remains on hi-fire
counterclockwise. Sometimes on
pressure should also show a notice-
and does not cycle, increase the
three phase models all motors will
able drop, indicating that the hi-fire
regulator setting on the propane
run backwards. They can easily be
solenoid is closed and the burner is
models, or the supply valve on the
reversed by interchanging two of the
being supplied with less gas
natural gas models in order to reach
three power supply wires. Reverse
through the low fire control valve.
the thermostat setting. If the burner
the two outside wires, L1 and L3,
At this time set the hi-fire and lo-
remains in lo-fire and does not cycle,
Natural Gas
Hi-Fire 6-10 lbs.
Lo-Fire 1-3 lbs.
and leave the middle one in the
same position.
Note: If the dryer is empty, the
fans or burners will not operate. The
fans cannot create enough static
pressure to engage the air switch.
7
You will receive a loss of airflow
message.
BURNER SAFETY
To check the burner safety function, first
5
9
3
make sure the main gas valve is off. Turn
the fan switch on and allow the fan to
start. Then, turn the heater switch on
for that fan. The dryer will shut down
after 20 seconds. The safety message,
"Burner 1 warning flame not detected"
will appear. Restart dryer and repeat for
4
2
1
8
6
each fan/heater.
BURNER TEST FIRE
Test fire each burner by starting the
fan. Then, turn the burner switch to
on. Turn on the fuel supply, and the
burner should ignite after a short
16
The dryer fan and heater controls featuring: 1-pressure regulator, 2-lo-fire
control valve, 3-high pressure solenoid, 4-low pressure solenoid, 5-hi-lo fire
thermostat, 6-fuel supply line, 7-LP solenoid or supply ball valve(NG),
8-air pressure switch and 9-liquid filled gauge.
DRYER PRE START CHECKS
All dryer functions should be checked before operation each season.
slightly decease gas pressure with
Turn on the electric shut off valve to
DRYER SHUTDOWN
the lo-fire control valve. If the gas
allow fuel flow to the dryer, if so
To shut down the dryer, first close
pressure is decreased too much a
equipped. Turn the load switch to
the fuel supply valve at the tank or
popping or fluttering sound will be
auto and unload switch to one
valve along the fuel line. If the
heard. Also, anytime the high pres-
speed. Push the dryer power start
burner is operating, let the dryer
sure side is adjusted, the low pres-
button, and the controller will se-
run out of fuel, and it will shut down
sure side needs to be checked. Re-
quentially start all dryer components
automatically due to loss of flame.
peat the test for each fan/heater unit.
in their proper order. If any switches
Close the fuel valve at the dryer,
are not in their correct position for
and press the dryer power stop
STAGED BATCH CHECK
staged batch operation, the dryer will
button. Turn off the safety discon-
To check the staged batch opera-
indicate improper switch position,
nect handle on the front of the
tion, turn the control power switch
and will not start until the switches
power box, and turn off the main
to the on position. Turn the drying
are in the proper position. After start-
power to the dryer.
mode switch to the staged batch posi-
ing, all batch timers will time down
tion. Press the reset button, open
in sequence. When the unload cycle
EMERGENCY
the main fuel supply valve at the tank
is complete the timers will automati-
In case of emergency push the dryer
on an LP dryer, or valve in the fuel
cally reset to their original settings,
power stop button. The fan, burner
supply line on a natural gas dryer.
and start the dry timer again.
and all augers will stop immediately.
17
DRYER START UP
CONTINUOUS FLOW AND CONTINUOUS BATCH START UP PROCEDURE
At the beginning of each harvest and
allow the electronic fuel shutoff
6. The dryer should already be
before filling the dryer with grain
valve to be manually opened
filled with grain. Turn the load
make sure to inspect the dryer for
(if so equipped), and the dry-
auger switch to the auto posi-
rodent damage, proper belt and
ing mode switch will light up,
tion. In both the auto and manual
chain tension and missing or dam-
indicating that the dryer is ready
positions the dryer grain level
aged safety shields. Test operate
to be started.
switch will automatically keep
the dryer using the prestart check
procedures located on pages 14-17.
the dryer full of grain. In the auto
5. Move the load auger switch to
position the dryer will shut down
manual, and push the dryer
after a preset time period on the
1. Before attempting to operate the
power start switch. The top au-
out of grain timer.
dryer make sure that all safety
ger will immediately start, and
shields are in place, all plenum
the load auger switch will light
7. Turn the fan switch to on. The
bottom closure panel doors are
up. If additional grain handling
fan will start, and the switch will light
closed, all rear access doors are
equipment is wired to the dryer
up when airflow is detected.
closed and all personnel are
it will also start immediately.
clear of the grain dryer and grain
handling machinery.
2. Turn all selector switches on the
control panel to the off position.
8. Start the burner by turning the
6. When the dryer is full of grain the
heater switch to on. After purg-
top auger will stop automatically,
ing for approximately 10 sec-
and any grain handling equipment
onds the burner will fire, and the
wired to the dryer will also stop.
heater switch will light up. This
indicates that the flame sensing
circuit is sensing burner flame. For
ply to the dryer, and move the
CONTINUOUS FLOW
OPERATION
safety disconnect handle mounted
1. Turn the control power switch to on.
adjustment see the pre start
3. Turn on the electric power sup-
section of this manual.
on the dryer's upper power box
to on.
2. After the date and time appear
on screen, press the reset button.
3. Push the dryer power start switch.
to be removed with the plenum temperature set at 180°F. Example:
copyright message, model number, total running time in hours
4. Open the main fuel supply valve
Shelled corn starts with 25% mois-
and minutes, current date and
on the tank if using LP gas, or
ture and the final moisture content
time will appear. At this point the
open the fuel supply line if us-
is to be 15% (10% removal). Us-
controller will lock out all other
ing natural gas. Turn on the
ing the all heat dryeration process,
dryer functions. Once the date
Maxon electric shut off valve,
the estimated drying time is 60 min-
and time appear, press reset,
if so equipped, or open the manual
utes (10 x 6).
and the dryer will perform its
shut off valve to allow fuel flow to
safety circuit checks. If a fault
the dryer.
is found the cause will be displayed on the LCD. If all are
found safe the controller will
18
9. Operate the heaters to dry grain for
6-7 minutes per point of moisture
4. Turn the control power switch to
on. The switch will light up. A
information concerning burner
10. While operating the dryer adjust the
metering roll dials to the recom-
5. Turn the drying mode switch to
continuous flow.
mended settings. See the charts on
page 19 and 20.
DRYER START UP & OPERATION
1300 SERIES CONTINUOUS FLOW METERING ROLL SETTINGS
Full Heat
Initial
Moisture
Moisture
Removed
Approx.
Dry Time
1 Speed
2 Speed
Low
2 Speed
High
17%
2 pts.
16 min.
625
317
875
18%
3 pts.
21 min.
476
270
775
19%
4 pts.
26 min
385
241
675
20%
5 pts.
31.5 min.
317
213
575
21%
6 pts.
37 min.
270
196
476
22%
7 pts.
41.5 min.
241
185
385
23%
8 pts.
47 min.
213
172
317
24%
9 pts.
51 min.
196
161
270
25%
10 pts.
54 min.
185
150
241
26%
11 pts.
58 min.
172
140
213
27%
12 pts.
62 min.
161
132
196
28%
13 pts.
66.5 min.
150
123
185
29%
14 pts.
71.5 min.
140
116
172
30%
15 pts.
76 min.
132
110
161
31%
16 pts.
81 min.
123
104
150
32%
17 pts.
86 min.
116
100
140
33%
18 pts.
91 min.
110
096
132
34%
19 pts.
96 min.
104
087
123
35%
20 pts.
100 min.
100
082
116
These are approximate starting points.
19
DRYER START UP & OPERATION
CONTINUOUS FLOW METERING ROLL SETTINGS*
Dry & Cool
Initial
Moisture
Moisture
Removed
Approx.
Dry Time
1 Speed
2 Speed
Low
2 Speed
High
17%
2 pts.
18 min.
363
187
650
18%
3 pts.
24 min.
272
163
550
19%
4 pts.
30 min
218
145
450
20%
5 pts.
35 min.
187
131
363
21%
6 pts.
40 min.
163
119
272
22%
7 pts.
45 min.
145
109
218
23%
8 pts.
50 min.
131
101
187
24%
9 pts.
55 min.
119
093
163
25%
10 pts.
60 min.
109
087
145
26%
11 pts.
65 min.
101
082
131
27%
12 pts.
70 min.
093
077
119
28%
13 pts.
75 min.
087
073
109
29%
14 pts.
80 min.
082
069
101
30%
15 pts.
85 min.
077
065
093
31%
16 pts.
90 min.
073
061
087
32%
17 pts.
95 min.
069
057
082
33%
18 pts.
100 min.
065
053
077
34%
19 pts.
105 min.
062
049
073
35%
20 pts.
110 min.
059
045
069
These are approximate starting points.
20
DRYER START UP
11. To move grain through the dryer
burner and all augers will stop
6. Turn the fan switch to auto. The
turn the moisture control switch
immediately.
fan will start, and the switch will
to on. The switch will light up.
Note: The Electronic Monitor-
light up when airflow is detected.
Note: When the unload switch
ing Control System can be used to
is in the 2 speed position, and the
automatically start the dryer. Place
7. Start the burner by turning the
moisture control thermostat switch
all the control panel selector
heater switch to auto. After purg-
is off, the speed of the metering rolls
switches in the proper position,
ing for approximately 10 sec-
can be manually adjusted by turn-
and open the electric fuel shut off
onds the burner will fire, and the
ing the high speed metering roll dial.
valve before pressing the dryer
heater switch will light up indi-
Turning the dial clockwise will in-
power start button. The controller
cating that the flame sensing
crease the grain discharge rate,
will start all dryer components in
circuit is sensing burner flame.
counterclockwise will decrease the
their proper order.
For information concerning
burner adjustment see the pre-
discharge rate. (The numbers on the
speed dials indicate the percentage
of full speed.)
STAGED BATCH
OPERATION
start section of this manual.
1. Turn the control power switch to on.
8. To properly set the correct dry,
cool and unload time for various
12. At the end of the startup period,
start the flow of grain out of the
dryer. Turn the unload switch to
2. Make sure the drying mode switch
is turned to staged batch.
moisture content grains. See the
charts on page 23 and 24.
the two speed position. The bottom auger and metering roll will
immediately start, and the un-
3. After the date and time appear,
press the reset button.
9. If the dryer is being operated in
all heat, turn the fan switch to
on. In this position the fan will
load switch will light. If additional
grain handling equipment is uti-
4. Open the main fuel supply valve
run continuously during the dry,
lizing the unload auxiliary over
on the tank if using LP gas, or
cool and unload stages of the
load supplied with the dryer,
the valve in the fuel supply line
staged batch operation. If the
this equipment will also imme-
if using natural gas. Turn on the
dryer is being operated in the
diately start.
Maxon electric shut off valve,
dry and cool mode, the preferred
if so equipped, or open the manual
position for the fan switch is the
shut off valve to allow fuel flow
on position, so the fan will run con-
to the dryer.
tinuously. If desired, the fan can
13. To shut the dryer down,close
the fuel supply valve at the fuel
tank or fuel source. Let the dryer
be turned off during the unload
run until the fuel supply lines
5. The dryer should already be
cycle of the dry-cool-unload se-
drain, and the dryer automati-
filled with grain. Turn the load
quence by turning the fan switch
cally shuts down due to loss of
auger switch to auto. In both the
to auto.
flame. Close the fuel valve at the
auto and manual position, the
dryer. Press the dryer power
grain level switch will automati-
10. If the dryer is being operated in
stop button. Turn off the dryer's
cally keep the dryer full of grain.
all heat, turn the heater switch
safety disconnect handle. Turn off
In the auto position the dryer will
to on. The burner will operate
the main power supply to the dryer.
shut down after the preset time
whenever the fan is operating.
period on the out of grain timer,
If the dryer is being used in dry
or if the grain flow to the dryer is
and cool, turn the heater switch
interrupted.
to auto and the burner will auto-
14. In case of emergency push the
dryer stop button. The fan,
21
DRYER START UP & OPERATION
matically shut down during the
setting programmed into the
the position of the switch is cor-
cooling and unloading cycles.
system, turn the moisture con-
rected.
trol setting to off. To use the au11. Turn the unload switch to the
tomatic moisture control so that
14. To shutdown the dryer, close the
one speed position. The bottom
the dry time is determined, not
fuel supply valve at the fuel tank
auger and metering rolls will
only by the dry time setting, but
or fuel source. If the burners are
start automatically during the
also by the moisture content of
operating, let the dryer run out
unload cycle of the dry-cool-un-
the drying grain, turn the mois-
of fuel causing an automatic
load mode, along with any grain
ture control switch to on, and set
shutdown due to a loss of flame.
handling equipment that is wired
dial to a beginning setting of 135°F.
Close the fuel valve at the dryer,
and press the dryer power stop
to the dryer. The speed at which
the metering rolls operate during the
13. To start the drying operation
button. Turn off the dryer's main
unload cycle is adjusted by using
push the dryer power start but-
circuit breaker located on the
the high speed metering roll knob.
ton. The controller will start all
front of the power panel. Turn
Turning the dial clockwise will in-
the dryer components in their
off the main power supply to the
crease the grain discharge rate, and
proper order. If any of the se-
dryer.
counterclockwise will decrease the
lected switches are improperly
discharge rate.
positioned for staged batch dry
15. In case of an emergency, press
ing, the display will indicate the
the dryer power stop button. The
12. To control the length of the dry
proper switch position, and will not
burners, fans and all augers will
cycle using only the dry time
allow the dryer to operate until
stop immediately.
STAGED BATCH FAN & HEATER SWITCH SETTINGS
Fan Setting
Heater Setting
Fan Function
Heater Function
Auto
Auto
Fans stay on during dry and cool
cycle only
Burners stay on during dry timer cycle
only
Auto
On
Fans stay on during dry and cool
cycle only
Burners stay on during dry and cool
On
On
Fans are on continuously
Burners are on continuously
On
Auto
Fans are on continuously
Burners shut down at the end of the
dry cycle
At the end of the dry cycle in staged batch, the fans and heaters will continue running if in the Auto-Auto setting, until the
preset temperature on the moisture control thermostat is reached.
22
DRYER START UP & OPERATION
1300 SERIES BATCH TIMER SETTINGS
Dry & Cool
Full Heat
Fan & Burner Switche(s) on Manual
Fan(s) on Manual
Burner(s) on Auto
Initial
Moisture
Moisture
Removed
Approx.
Dry Time
Dry
Cool
Unload*
Approx.
Dry Time
Dry
Cool
Unload*
17%
2 pts.
16 min.
6 min.
0
10 min.
18 min.
18 min.
18 min.
10 min.
18%
3 pts.
21 min.
11 min.
0
10 min.
24 min.
24 min.
18 min.
10 min.
19%
4 pts.
26 min
16 min
0
10 min.
30 min
30 min
18 min
10 min.
20%
5 pts.
31.5 min.
21.5 min.
0
10 min.
35 min.
35 min.
18 min.
10 min.
21%
6 pts.
37 min.
27 min.
0
10 min.
40 min.
40 min.
18 min.
10 min.
22%
7 pts.
41.5 min.
31.5 min.
0
10 min.
45 min.
45 min.
18 min.
10 min.
23%
8 pts.
47 min.
37 min.
0
10 min.
50 min.
50 min.
18 min.
10 min.
24%
9 pts.
51 min.
47 min.
0
10 min.
55 min.
55 min.
18 min.
10 min.
25%
10 pts.
54 min.
44 min.
0
10 min.
60 min.
60 min.
18 min.
10 min.
26%
11 pts.
58 min.
48 min.
0
10 min.
65 min.
65 min.
18 min.
10 min.
27%
12 pts.
62 min.
52 min.
0
10 min.
70 min.
70 min.
18 min.
10 min.
28%
13 pts.
66.5 min.
56.5 min.
0
10 min.
75 min.
75 min.
18 min.
10 min.
29%
14 pts.
71.5 min.
61.5 min.
0
10 min.
80 min.
80 min.
18 min.
10 min.
30%
15 pts.
76 min.
66 min.
0
10 min.
85 min.
85 min.
18 min.
10 min.
31%
16 pts.
81 min.
71 min.
0
10 min.
90 min.
90 min.
18 min.
10 min.
32%
17 pts.
86 min.
76 min.
0
10 min.
95 min.
95 min.
18 min.
10 min.
33%
18 pts.
91 min.
81 min.
0
10 min.
100 min.
100 min.
18 min.
10 min.
34%
19 pts.
96 min.
86 min.
0
10 min.
105 min.
105 min.
18 min.
10 min.
35%
20 pts.
100 min.
90 min.
0
10 min.
110 min.
110 min.
18 min.
10 min.
These are approximate starting points.
*Set unload meter roll high speed setting to 999. If unload equipment cannot adequately keep up, lower the speed setting
and add time to the unload timer setting to completely unload the batch. In full heat mode, the time added to the unload
timer will need to be substracted from the dry timer. If fan is on auto and does not run during unload, set cool timer to 25
minutes.
New unload time calculation = present unload time
" new dial setting
1000
Example
13.75 = 11 ÷ 800
1000
23
DRYER START UP & OPERATION
1300 SERIES STAGED BATCH TIMER SETTINGS
Dry & Cool
Full Heat
Fan & Burner Switch(s) on Manual
#2 Fan on Manual #2 Burner on Auto
#1 Fan on Manual #1 Burner on Off
Initial
Moisture
Moisture
Removed
Approx.
Dry Time
Dry
Cool
Unload*
Approx.
Dry Time
Dry
Cool
Unload*
17%
2 pts.
16 min.
2 min.
0
3.5 min.
18 min.
9 min.
3 min.
3.5 min.
18%
3 pts.
21 min.
3.5 min.
0
3.5 min.
24 min.
12 min.
3 min.
3.5 min.
19%
4 pts.
26 min
5.5 min
0
3.5 min.
30 min
15 min.
3 min
3.5 min.
20%
5 pts.
31.5 min.
7 min.
0
3.5 min.
35 min.
17.5 min.
3 min.
3.5 min.
21%
6 pts.
37 min.
9 min.
0
3.5 min.
40 min.
20 min.
3 min.
3.5 min.
#2 Fan on Manual #2 Burner on Manual
#1 Fan on Auto #1 Burner on Auto
same
22%
7 pts.
41.5 min.
10.5 min.
0
3.5 min.
45 min.
.5 min.
18 min.
3.5 min.
23%
8 pts.
47 min.
12.5 min.
0
3.5 min.
50 min.
2.5 min.
18 min.
3.5 min.
24%
9 pts.
51 min.
13.5 min.
0
3.5 min.
55 min.
4 min.
18 min.
3.5 min.
25%
10 pts.
54 min.
14.5 min.
0
3.5 min.
60 min.
5.5 min.
18 min.
3.5 min.
26%
11 pts.
58 min.
16 min.
0
3.5 min.
65 min.
7.5 min.
18 min.
3.5 min.
27%
12 pts.
62 min.
17.5 min.
0
3.5 min.
70 min.
9 min.
18 min.
3.5 min.
28%
13 pts.
66.5 min.
18.5 min.
0
3.5 min.
75 min.
10.5 min.
18 min.
3.5 min.
29%
14 pts.
71.5 min.
20.5 min.
0
3.5 min.
80 min.
12.5 min.
18 min.
3.5 min.
30%
15 pts.
76 min.
22 min.
0
3.5 min.
85 min.
14 min.
18 min.
3.5 min.
31%
16 pts.
81 min.
23.5 min.
0
3.5 min.
90 min.
15.5 min.
18 min.
3.5 min.
32%
17 pts.
86 min.
25.5 min.
0
3.5 min.
95 min.
17.5 min.
18 min.
3.5 min.
33%
18 pts.
91 min.
27 min.
0
3.5 min.
100 min.
19 min.
18 min.
3.5 min.
34%
19 pts.
96 min.
28.5 min.
0
3.5 min.
105 min.
20.5 min.
18 min.
3.5 min.
35%
20 pts.
100 min.
30 min.
0
3.5 min.
110 min.
22.5 min.
18 min.
3.5 min.
These are approximate starting points.
*Set unload meter roll high speed setting to 999. If unload equipment cannot adequately keep up, lower the speed setting
and add time to the unload timer setting to completely unload the batch. In full heat mode, the time added to the unload
timer will need to be substracted from the dry timer. For additional cooling, set #1 fan switch on manual. If you need more
time between dumps use batch mode.
New unload time calculation = present unload time " new dial setting
Example
13.75 = 11 ÷ 800
1000
24
1000
1300 SERIES SERVICE GUIDE
25
SERVICE
SEASONAL INSPECTION AND SERVICE
The dryer is made of weather resis-
tional weight can seriously effect
accumulation of moisture within the
tant material, and is designed to re-
the balance, and result in harmful
windings, the fan and auger motors
quire a minimum of service. How-
vibrations and a short bearing life.
should be operated for 15 to 30 min-
ever, each season we recommend
the following items be checked be-
utes each month.
3.
Check each propellor for free play.
fore the unit is used, and any dam-
Any side play is an indication of
LUBE PROCEDURES
aged or questionable parts replaced.
defective motor bearings, which
If the motors are equipped with an
These checks will help eliminate
should be replaced to prevent a
alemite fitting, clean the tip of the fit-
possible failures, and assure de-
complete motor failure. Make
ting and grease with a grease gun.
pendable operation of the equip-
sure motor mount bolts are tight.
Use 1 or 2 full strokes on motors in
ment.
NEMA 215 frame and smaller. Use
4.
1.
2.
Motor bearings should be lubricated
2 to 3 strokes on NEMA 254 through
Shut off electrical power. Open
periodically, depending on operat-
NEMA 365 frame. Use 3 to 4 strokes
power box and control box, and in-
ing conditions. Under normal usage
on NEMA 404 frames and larger. On
spect for moisture, rodent damage
it is desirable to have the motor
motors having drain plugs, remove
or accumulated foreign material.
cleaned, checked and bearings re-
drain plug and operate motor for 20
Remove any foreign material
packed by an authorized service
minutes before replacing drain plug.
present. Inspect and tighten any
station every two to three seasons.
On motors equipped with slotted
loose terminal connections. Re-
If the unit is operated continu-
head grease screw, remove screw
place any damaged or deteriorated
ously through most of the year,
and apply grease tube to hole. In-
wiring.
this service should be performed
sert 2 to 3 inch length of grease
each year.
string into each hole on motors in
Check each propellor for freedom
Note: If on site bearing
NEMA frame and smaller. Insert 3
of rotation and uniform tip clear-
relubrication is to be performed, see
to 5 inch length on larger motors. On
ance. They should also be in-
lubrication instructions for ball bear-
motors having grease drain plugs,
spected for dirt and grain dust, es-
ing motors. To keep motor bearings
remove plug and operate motor for 20
pecially inside the hub. Any addi-
properly lubricated, and dispel any
minutes before replacing drain plug.
LUBRICATION INSTRUCTIONS FOR BALL BEARING MOTORS
SUGGESTED LUBRICATION INTERVALS*
Hours of Service per Year
H. P. Range
Suggested Lube Interval
5000
1/8 to 7 1/2
10 to 40
50 to 150
5 years
3 years
1 year
Continuous Normal Applications
1/8 to 7 1/2
10 to 40
50 to 150
1 year
3 years
9 months
Seasonal Service (motor is idle for 6
months or more)
All
1 year-beginning of season
Continuous high ambient temperatures, dirty or moist locations, high
vibrations or when shaft end gets hot
1/8 to 40
50 to 150
6 months
3 months
* The bearings have been lubricated at the factory, thus no lubrication should be added before start up.
26
SERVICE
SUGGESTED LUBRICANTS
Insulation Class
Consistency
Type
Grease
Frame Type
A&B
A&B
F&H
Medium
Medium
Medium
Polyurea
Polyurea
Polyurea
Shell Dolium R
Shell Dolium R
Shell Dolium R
215T & Smaller
254 & Larger
All
Inspect flame sensors for pos-
Note: Do not allow high mois-
tering roll bearings are lifetime lu-
sible damage or poor connec-
ture material to collect within the
bricated and do not require service
tions. Flame sensor wires must
trough area. It may adversely affect
relubrication.
be in good condition.
metal parts.
Inspect and manually rotate the top
8. Inspect entire dryer for loose, worn
strainers. Make certain gas valves
auger paddle assembly. The paddle
or damaged parts. Include check of
are closed and that gas is purged
unit must rotate freely without any
auger flighting, metering rolls and
from the system before attempting
indication of sticking or binding.
other internal parts. Check that tem-
Note: All of the auger and me-
1. Remove and clean the gas line
4.
5.
disassembly.
perature sensors within air ple6.
2.
Inspect the top auger and bottom
num chamber are secured within
Inspect the collector plate at the
auger drive lines for proper adjust-
insulated clamps, and do not
top of the burner casting and
ment and condition. Readjust line
chafe on other metal parts.
the burner cup for any accumu-
tension as required.
lation of foreign material. Clean
Note: All of the auger and me-
if required. Foreign material in
tering roll bearings are lifetime lu-
warning decals are securely in-
the burner cup or casting will not
bricated and do not require service
stalled. Make certain guards do not
burn out and will impair burner
relubrication.
interfere with moving parts. If guards
operation.
Make sure all dryer guards and
or warning decals are missing, con7.
3.
9.
Operate dryer clean out levers,
tact your dealer for a free replace-
If required, inspect ignitor plug and
and check cleanout hatch mecha-
ment.
clean the electrodes. Use an igni-
nism for proper operation. With
tion point file to remove carbon and
hatch open, inspect and remove
10. Test fire the dryer several weeks
rust between the electrode sur-
any accumulation of dirt, fines
ahead of the drying season. Check
faces. Ignitor gap should be about
and foreign material from the
for possible gas leaks. See page
1/8 inch.
bottom auger trough area.
16 for burner test fire.
Bottom Auger Drive
27
SERVICE
FAN PROPELLOR REMOVAL AND INSTALLATION
Capscrews installed
through threaded
holes of bushing
The fan propellor is secured to the
motor shaft by the use of a taperlock bushing, motor shaft key and
three cap screws.
CAUTION: Although the taper-lock
method of retaining the propellor
onto the motor shaft is simple, it is
Fan Hub
Key
essential that the following points be
Split Taper Bushing
read carefully and fully understood.
Improper installation can cause a
Fan blade
installation
loose flying propellor, and result in
serious injury or death.
2. Remove the three cap screws
remove bushing and propellor. With
from the clearance holes in the
the propellor free from the bushing,
taper-lock bushing.
a wheel can be used to pull the
THREADED BUSHING
HOLES
The threaded holes within the bushing are provided for disassembly
bushing off of the motor shaft. Re3.
Install two grade 5 cap screws
attach bushing onto propellor to pre-
purposes only. Do not attempt to use
into the threaded holes in bush-
vent the loss of parts.
these holes for reassembly. They
ing, and turn them by hand until
Note: During manufacture the
will not allow the parts to lock onto
they bottom against the front
propellor and bushing are balanced
the shaft thereby causing a hazard-
surface of the propellor.
together and are marked with two
ous operating condition.
small dots to identify their original
Block propellor to prevent it from
alignment position. Check the bush-
CLEARANCE HOLES
4.
turning, and gradually turn the cap
ing and propellor to make sure they
When reassembling parts, the cap
screws (up to 1/4 turn at a time) until
have alignment marks. Mark the
screws must be installed through the
the propellor breaks loose from the
alignment of the propellor and bush-
untapped clearance holes as shown.
bushing and motor shaft. Carefully
ing, if necessary.
This will cause the propellor to be
pulled forward onto the tapered
bushing, thus locking the parts securely onto the motor shaft.
Capscrews installed
through threaded
holes of bushing
When fan servicing requires removal and installation of the
propellor, make sure the propellor
is removed and reinstalled properly.
Fan Hub
1. Lock out the fan power supply,
and remove the fan guard and
the venturi, as required on some
models.
28
Split Taper Bushing
Fan blade
removal
SERVICE
FAN MOTOR REMOVAL AND INSTALLATION
In the event of motor failure, remove
trol box, and disconnect the motor
if required, between motor base
the motor as described, and take it
lead wires from within the box.
and plate. Reinstall motor mount
to the nearest service station. An
Note: Tag or otherwise identify
bolts and washer, but do not fully
authorized service station is the only
wires for ease of reassembly.
tighten at this time.
place that can provide possible moRemove motor mount bolts. If
6. Reinstall conduit and wires through
pair at other places will be at own-
there are shims between the
hole in fan/heater housing and care-
ers expense.
motor and its base, note their
fully connect all electrical wiring.
tor warranty. Motor service and re-
3.
location so they can be properly
If the service station determines
installed during reassembly.
motor failure is caused by faulty ma-
7.
Adjust position of motor by temporarily mounting fan blade on motor
terial or workmanship within the
Disconnect the upper end of the
shaft. Rotate fan blade by hand,
ered under the warranty. Motor fail-
motor conduit, then carefully pull the
making the necessary adjustments,
ure caused by external sources will
wires through the hole in the fan/
so the tip clearance between
result in a charge to the owner for
heater housing. Remove motor
blade and housing is uniform. If re-
repair.
from the fan/heater unit with the
quired, remove the fan blade and
conduit still attached. If motor re-
fully tighten all four motor mount
quires service, take it to an autho-
bolts.
rized service station.
Note: Make sure to install and
warranty period, repair will be cov-
4.
1. Make certain power is shut off
and locked out. Remove fan
tighten the propellor in accordance
guard and propellor.
5.
2.
Remove cover from fan/heater con-
To reinstall motor, slide onto mo-
with previous instructions.
tor base plate and replace shims,
The position of the fan motor provides easy access for service.
29
SERVICE
HEATER PARTS REMOVAL AND INSTALLATION
Most of the heater parts can be re-
b. Disconnect gas solenoid valve
b. Use a dependable brand of
moved by simply identifying any at-
coils. Be sure to mark which one
high temperature pipe caulking
tached wiring, and then disconnect-
goes where.
compound when assembling gas
ing the obvious mounting parts.
connections. Apply only a light
c. Lift pipe (with orifice, solenoid
coating onto male threaded end
1. Flame sensor: Disconnect the
valve and other parts attached),
of fittings.
wire connector, and unscrew the
straight up and remove from fan/
flame sensor out of its mount-
heater housing. Orifice and other
c. Solenoid valves and gas regula-
ing bracket.
parts can now be removed from
tors are directional and must be
pipe train, if desired.
properly installed. Do not attempt
2. Gas Solenoid valve coil(s):
to connect gas solenoid valve by
Reassemble: To reassemble
applying force to the valve core
or the metal clip on the gas valve,
parts, reverse the disassembly pro-
stem as it may ruin the unit.
and slide the housing and coil
cedure and check the following:
Unsnap either the plastic cap,
5.
d. Make sure all electrical wires are
off the valve stem and body. Do
not energize the coil when it is
a. Make sure all parts are thoroughly
properly connected. Refer to wiring
removed, as the coil may be
cleaned and open.
diagrams.
come damaged due to excessive current flow.
3. Regulator and gas solenoid
1
valve(s): The gas regulator and solenoid valve(s) are directional and
must be connected as indicated by
5
3
the markings near the port openings. Make sure gas is shut off and
2
purged from the system before removing parts.
Note: When installing a liquid
3
4
gas solenoid valve on LP models,
do not over tighten the connection
into the inlet side, as the inlet orifice
may become partially blocked.
4. Main Gas Orifice: With fuel shut
off and gas purged from system,
proceed as follows:
a. Disconnect the plumbing support brackets from the pipe train.
30
This view of the dryer heater shows 1-high pressure gas solenoid, 2-low
pressure gas solenoid, 3-gas solenoid valves, 4-gas regulator and 5vaporizer adjustment bracket
SERVICE
METERING ROLL SERVICING
adjustment as it is completely
controlled from the control box.
3. Speed reducer gear box: The
direct drive gear box provides
the required speed reduction,
and transmits power to the metering rolls through a drive chain
arrangement. The gear box does
not require adjustment. The drive
chain should also be periodically
lubricated and retensioned as
necessary.
4. Unload auger time delay: The
delay controls the bottom auger
system and causes the unload
auger (and any connected auxThe speed reducer gear box.
iliary unloading conveyors) to
continue operating for the pro-
This dryer is equipped with SCR
discharge rate for the dryer. The
grammed amount of time, even
metering roll drive assembly. The
maximum setting of 999 provides
after the metering rolls stop.
metering rolls are driven by a
a maximum 100% discharge of
This feature permits the cleanout
separate DC type electric motor.
1960 BPH for 1314, 2520 BPH for
of grain within the unloading
The speed of the motor is vari-
1318, 3080 BPH for 1322 model
equipment at the end of all dis-
able, and is controlled by an
dryers.
charge cycles.
electric SCR (silicon controlled
Note: When the control is set
rectifier) control within the main
to the maximum discharge rate
5. If a foreign object becomes lodged
control box.
(999), the metering roll speed
in the metering rolls and jams
should be 17.5 RPM for 8" dis-
the system, the unloading auger
charge auger.
will stay in motion. However,
MAIN CONTROLS
the metering roll drive will stop
1. SCR speed control: The metering roll speed pots on the front
2. DC electric motor: The direct
and the DC motor should stall
of the control box regulate the
current (DC) motor provides
out. The Electronic Monitoring
speed of the DC motor which
the drive for the metering roll,
Control System will shut down
drives the metering rolls.
and is located on the front left
the dryer after a two minute
hand side of standard model
period. If any one metering roll
The markings on the scale from
dryers. The output shaft of the
or sensor should malfunction
0 to 999 represent the flow of
motor is connected directly to
the control will display a left or
grain past the metering rolls as
the gear box assembly.The DC
right metering roll failure warn-
a percent of the maximum grain
motor requires no operational
ing.
31
SERVICE
HOW TO DETERMINE A METERING ROLL PROBLEM
To determine if the metering problem is from blockage, perform the
following test with the power off.
Remove the drive chain by loosening the motor mounting bolts.
Refer to photo, and place a pipe
wrench on the hub of the roller chain
sprocket, on the left hand metering
roll at the drive end of the dryer.
Apply up to 100 ft. lbs. of force, and
The metering roll drive.
attempt to rotate the roll toward the
HOW TO CLEAR A JAMMED METERING ROLL
inside of the dryer. If the metering
roll will turn, then repeat for right
Place a pipe wrench on the hub of
noise when making this check. Once
hand side. If the metering roll will
the sprocket of the jammed meter-
the location is determined, the roll can
turn, it can be assumed that no
ing roll and turn the roll. First, back-
be reached from the outside by open-
blockage exists, and the problem is
ward, and then, forward several times
ing the access door to remove the for-
from some other cause. Check for a
in an attempt to dislodge the object,
eign object causing the jam (before
break in the power train, chain, drive
and clear it through the roll. If this is
opening doors see below). The ser-
key, pin, etc.
not successful, have an assistant
vice tool must be inserted before open-
turn the metering roll, and attempt to
ing doors. First, swing open the ple-
CAUTION: Keep hands away from
locate the jam by sound. Shut down
num bottom closure panel. Insert the
sprocket teeth to avoid injury
the fan/heater, and eliminate any other
service tool above the metering roll.
from chain backlash, as a result
of torsion build up in the system
caused by the jam.
SERVICE TOOL
This column cutoff damper is designed to insert through the grain column
(from the inside of the dryer) immediately above the metering roll. This
permits opening of the metering roll access door. For service or inspection without unloading the dryer, the plenum bottom closure panel and
The auger discharge switch.
32
metering roll adjust damper must be removed prior to using service tool.
1300 SERIES WIRING DIAGRAMS
33
1300 SERIES WIRING DIAGRAMS
INPUT/OUTPUT BOARD TERMINAL IDENTIFICATION
34
1300 SERIES WIRING DIAGRAMS
1300 SERIES WIRING TO CONTROL BOX
35
1300 SERIES WIRING DIAGRAMS
1300 SERIES CONTROL WIRING
36
1300 SERIES WIRING DIAGRAMS
1300 SERIES SAFETY WIRING DIAGRAM
37
1300 SERIES WIRING DIAGRAMS
1300 SERIES FRONT PANEL INTERNAL WIRING
38
1300 SERIES WIRING DIAGRAMS
1300 SERIES FRONT PANEL EXTERNAL WIRING
39
1300 SERIES WIRING DIAGRAMS
DRYER FAN CAN CONTROL WIRING
40
1300 SERIES WIRING DIAGRAMS
1300 SERIES 220 VOLT SINGLE PHASE CONTROL WIRING
41
1300 SERIES WIRING DIAGRAMS
1300 SERIES 220 VOLT 3 PHASE POWER WIRING
42
1300 SERIES WIRING DIAGRAMS
1300 SERIES 440 VOLT 3 PHASE POWER WIRING
43
TROUBLE ANALYSIS PROCEDURE
A multimeter is required for some of
• The safety circuit is 12 volts DC
CAUTION: When making high volt-
the following checkout procedures.
• When checking these circuits,
age tests with "live" circuits, be ex-
Before performing any tests, check
measure voltage between the cir
tremely careful. Follow established
if the dryer power supply is 1 phase,
cuit test location and to ground.
safety practices. Turn power on for
230 volt, or 3 phase, 230 or 460 volt.
• DC circuits should be measured
testing only. Do not attempt to make
• The burner circuit is 120 volts AC
between the test location and its
the dryer operate by using a jumper
respective DC ground.
wire to bypass a defective safety
on all standard U. S. production
models.
Refer to wiring diagrams and the
• The control circuit to the motor
starters is 120 AC volts.
parts list for identification of parts
and the electrical terminals.
Possible Cause
Problem
Control power switch light off.
Control power light is on, reset button has been pressed,
drying mode light off.
This indicates control power is present at input/output
board, but no power is being transferred through the I/O
board.
No display on LCD screen.
Control power light is on, drying mode light is on--load
auger, fan, heater, unload auger will not operate.
Display shows "L1 VOLTAGE LOST" message.
Display shows "12 VOLT POWER SUPPLY WARNING"
message.
Display shows "MOTOR OVERLOAD" message.
44
component.
1. Check that main power and circuit breakers are
turned on. Check for tripped breaker.
2. Check for blown 5 amp fuses.
3. Monitor relay is defective.
4. Defective transformer or wiring.
5. Check for a defective power switch.
6. Check wiring between fuses and input/output board.
Refer to wiring diagram for test locations.
1. Power interruption: Incoming power to the dryer has
been interrupted. The display screen will show the date
and time if this has occured, once power has returned.
2. Display not finished initial setup: The monitor will
display a copyright message and model number, total
running time in hours and minutes and then the current
date and time. To activate the controller press the reset
button.
3. Input/output board: The input/output board has developed a problem that requires its replacement.
1.
2.
3.
4.
Check for a defective power switch.
Check wiring between fuses and input/output board.
Check for 120 volts AC between points J9-3 and AC-1.
The display may have a malfunction requiring its replacement.
1. Press the dryer power start button.
2. Refer to the problem listed for load auger, fan heater and
unload auger in the following sections.
The left circuit breaker located on the input/output board of the
Electronic Monitoring Control System has tripped, or one of the
hardware timers on the Electronic Monitoring Control System has
shut down the dryer.
The right circuit breaker located on the input/output board of the
Electronic Monitoring Control System has tripped.
The thermal overload on the fan motor, load motor, unload
motor or an auxiliary motor has opened indicating an
overloaded motor. (The overloads must be manually reset).
TROUBLE ANALYSIS PROCEDURE
Problem
Possible Cause
Display shows "BURNER 1, 2 OR 3 VAPOR HIGH
TEMPERATURE" message.*
The LP gas vapor temperature sensor located in the gas
train downstream from the vaporizor has opened, indicating
that the vaporizer is running too hot and must be readjusted. (This control is a 200°F limit which automatically
resets when it cools).
Display shows "BURNER 1, 2 OR 3 WARNING FLAME
NOT DETECTED" message.*
The flame sensor has failed to detect a burner flame,
indicating that the burner has failed to light, there is a
problem with the flame sensing circuitry or the dryer is not
getting burner fuel.
Display shows "FAN 1, 2 OR 3 HOUSING HIGH
TEMPERATURE" message.*
The temperature high limit located on the fan/burner
housing has opened, indicating an over temperature
condition has occurred towards the rear of the fan/heater
housing. (This control is a 200°F limit control that must be
manually reset).
Display shows "GRAIN DISCHARGE WARNING" message.
The cover on the grain discharge box has opened, indicating that grain is backing up into the discharge box.
Display shows "LOWER ADJ. GRAIN HIGH
TEMPERATURE" message.
An over temperature condition has occurred inside the left
side grain column. (This control is a 210°F limit which
automatically resets when it cools).
Display shows "LOWER FIXED GRAIN HIGH
TEMPERATURE" message.
Display shows "OUT OF GRAIN" message.
Display shows "OUT OF GRAIN-UNLOAD CLEANOUT.."
message.
An over temperature condition has occurred inside the right
side grain column. (This control is a 210°F limit which
automatically resets when it cools).
The dryer has run low on grain, and the out of grain timer
has timed out shutting the dryer down. The unload auger
will then clean out the dryer, if the unload switch is on
during continuous flow operation. Check the out of grain
timer setting, and if necessary adjust. Also, before restarting, inspect load equipment for possible damage or
adjustment.
Display shows "PLENUM 1, 2 OR 3 HIGH TEMPERATURE"
message.*
An over temperature condition has occurred inside the
dryer plenum. (This control is a 300°F limit which automatically resets when it cools).
Display shows "METER ROLL DRIVE SYSTEM FAILURE"
message.
The metering roll drive system has failed to turn within two
minutes. A faulty D. C. motor, broken chain or jammed roll
is a possible cause of this message.
Display shows "RIGHT METERING ROLL FAILURE"
message.
The right metering roll has stopped rotating, or the sensor
has been damaged.
Display shows "LEFT METERING ROLL FAILURE"
message.
The left metering roll has stopped rotating, or the sensor
has been damaged.
Display shows "AUXILIARY SAFETY SHUTDOWN"
message.
A shutdown has occurred due to a user installed safety
feature. This circuit is located between J5-8 and J1-20
terminals on the input/output board.
Display shows "BURNER 1, 2 OR 3 SHUTDOWN LOSS OF
AIRFLOW" message.*
The air switch contacts have opened, indicating insufficient
airflow for burner to operate.
* The number in the warning message designates the fan, burner or plenum where the problem is located. All areas are
numbered from the bottom up. For example, the bottom fan is number 1, and the top fan is number 3.
45
TROUBLE ANALYSIS PROCEDURE
Problem
Possible Cause
Display shows "FAN 1, 2 OR 3 FAILURE-NO AIRFLOW"
message.*
The air switch contacts have opened, indicating the fan
may not be turning. The air switch may need adjustment.
Display shows "FAN 1, 2 OR 3 CANNOT START-CHECK
AIR SWITCH" message.*
The air switch contacts have closed prior to the fan
starting, indicating a freewheeling blade or improper setting
of air switch.
Fan motor will not start.
1. Check that the fan circuit breaker and the fan switch are
on. Also, check for defective switch or bad wiring connections.
2. If lighted switch does not light, the air switch needs
adjustment, or the bulb may be burned out.
3. Verify closing of fan motor contactor. Check voltage on
load side of contactor. See appropriate power wiring
circuit diagram for terminal numbers. Inspect contactor
for defective points or a burned out coil.
4. Inspect connections, and check voltage applied to the
motor leads in the fan heater box to determine if the
motor is defective.
5. Check capacitors on single phase motors, and replace if
defective. If motor starts slowly, check for low voltage
during starting due to excessive voltage drop in power
supply wiring.
Top auger will not start.
1. Check that the top auger circuit breaker and the load
auger switch are turned on.
2. If lighted switch does not light, the output power to the
contactor is missing. Check connections, or if the bulb is
burned out.
3. Check position of the upper auger paddle switch. It
must be down to start auger.
4. Inspect for secure mounting and wiring of mercury
switch in the terminal box on the top auger paddle
switch shaft. Include check for a defective mercury switch.
5. Verify closing of the top auger contactor. Check voltage on
load side of contactor. Inspect contactor for defective
points, or a burned out coil.
6. Inspect connections, and check voltage applied to motor
leads in motor junction box to determine if motor is defective.
7. Check that the mercury switch box is in the proper position.
Bottom auger will not start.
1. Check that the bottom auger circuit breaker is on.
2. If the lighted switch does not light, the output power to
the contractor is missing. Check connections, and
check to see if the bulb is burned out.
3. Check that the unload switch is on (1 or 2 speed).
4. Verify closing of bottom auger contactor; check voltage
on load side of contactor.
5. If using the moisture control, check for proper setting, or
defective operation of the control.
6. Check for any loose wire connections in unload auger
and moisture control thermostat circuits.
Grain not moving through columns.
1. Check the dryer for fine material buildup inside the
columns.
2. Avoid leaving the dryer columns full for long periods at a
time (2-3 days) while not operating the dryer, or during
rainy weather.
* The number in the warning message designates the fan, burner or plenum where the problem is located. All areas are
numbered from the bottom up. For example, the bottom fan is number 1, and the top fan is number 3.
46
TROUBLE ANALYSIS PROCEDURE
Problem
Possible Cause
Grain not moving through columns.
1. Check the dryer for fine material buildup inside the
columns.
2. Avoid leaving the dryer columns full for long periods at a
time (2-3 days) while not operating the dryer or during
rainy weather.
3. Empty the dryer. Keep the dryer clean! Do not allow
fine material to gather in the plenum chamber.
4. It may be necessary to open the strike off plates in the
affected columns in half inch intervals.
Uneven drying-Some kernels appear brown while others
are under dried.
1. Check plenum thermostat temperature setting. Some
varieties of grain are more sensitive to higher operating
temperatures. It may be necessary to lower the plenum
operating temperature to accommodate this.
2. Check for proper burner alignment (side to side).
Vibration during shipment may have caused misalignment.
Uneven heat exiting from dryer columns.
Burner will not fire with fan operating.
1. Burner switch must be on.
2. Check for power to ignition board.
Heater switch light and gas solenoids go on and off
erratically-The light blinks on and off while the solenoids
"chatter".
1. The blinking light indicates the flame sensor is not
detecting flame.
2. The "chattering" solenoids are caused by the loss of
flame detection, and the thermostat and Fenwal ignition
board trying to reestablish a flame. Check for loose
wires on flame sensor; replace or repair wires or sensor.
Burner will not fire-No gas pressure with fan operating at
least 15 seconds (gas supply or fan heater malfunction).
1. Check gas supply. Also, check gas filter and gas line for
possible obstruction or closed valves. Refill tank;
replace or repair parts, as required.
2. Inspect gas solenoid valves (including liquid valve on
LP units) for defective coils or improper wiring. Replace
valve or coil if valve will not open with proper voltage
applied (120 volts).
3. Check for proper voltage. 120 volts across L1 and L2
incoming voltage to the Fenwal Ignition Board, and 115
volts outgoing across V1 and V2 to the solenoids.
Burner will not fire-But gauge shows gas pressure.
1. Fenwal Ignition Board: Check board for spark by
removing ignition wire from board, and holding aninsulated screwdriver against the output terminal and 1/4"
away from the control box casing. There should be a
strong spark. Check board wire connections. Replace
the Fenwal board, if necessary.
2. Ignitor: Check that the ignitor is properly gapped to 1/8"
and that it has a strong spark. Inspect the porcelain and
electrodes for damage or cracking. Replace or clean if
necessary.
Burner maintains desired drying temperature-but cycles
from hi-fire to off (without going to lo-fire).
1. Make sure the low flow control valve is not completely
closed. Valve must be adjusted open to provide the
proper lo-fire gas pressure listed in this manual.
2. Check lo-fire solenoid valve for proper operation.
47
TROUBLE ANALYSIS PROCEDURE
48
Problem
Possible Cause
Burner operates-But will not cycle from hi-fire to lo-fire.
1. Check the gas pressure reading on the gauge. Problem
may be due to insufficient gas regulator setting. Temporarily decrease the hi-lo fire thermostat setting to verify
that the thermostat will function and cause the burner to
cycle. If burner will cycle at the reduced thermostat
setting, it indicates that the problem was due to insufficient heat to satisfy the original setting. Increase the
gas regulator setting for additional heat output. Do not
exceed the maximum pressure listed in this manual.
2. Hi-lo fire thermostat control may be defective. If the
burner still will not cycle to lo-fire after decreasing the
thermostat, the problem may be due to a broken or
kinked thermostat sensor tube. Observe reading on the
thermometer. Replace control assembly if it cannot be
set to cause its switch to go to the open circuit position
with normally hot air plenum temperatures.
3. If the burner continues to operate on hi-fire, check the
hi-fire gas solenoid valve for a stuck or blocked open
condition, or for reversed gas pipe connections. The
solenoid valve must not allow gas flow when its coil is
not energized.
Burner operates-But will not cycle from lo-fire to hi-fire.
1. Check for an excessive lo-fire gas pressure setting.
Observe pressure setting shown on gauge, and
compare reading with recommended low pressure
settings listed in this manual. Readjust lo-fire setting on
flow control valve, if necessary.
2. Check for improperly adjusted or defective hi-lo fire
thermostat control. Temporarily increase the temperature setting. If the heater will still not cycle, check for
problem in the control wire connections. The control
wires should be connected to terminals R and B of the
thermostat, so the switch will open upon temperature
rise. If the burner will cycle with these two wires
connected together, the thermostat is faulty.
3. Check for improperly connected or faulty hi-fire gas
vapor solenoid valve. Correct any poor connections or
defective wiring. If wiring appears proper, problem may
be caused by a burned out valve coil or defective valve.
Replace hi-fire solenoid valve, or its coil, if defective.
QUICK REFERENCE GUIDE
ELECTRONIC MONITORING CONTROL SYSTEM
Important! To activate the controller
•
Fan delay
Change the marquee on the LCD dis-
after turning on the control power,
•
BPH factor
play:
press the reset button.
•
Metering roll monitor disabling
•
while turning on the control power
feature
Setting the dry, cool, unload and out
•
of grain timers:
These features are accessed se-
•
Press the dry, cool, unload or
quentially as listed above. Press the
out of grain button
increase or decrease buttons to
•
Press the modify button
change a setting. Press the enter
•
Press the increase or decrease
button to move from feature to fea-
button to get desired setting
ture.
•
Air switch disabling feature
•
To change a character press the
increase or decrease button
•
To move the cursor to the right
press the unload button
•
To move the cursor to the left
press the dry button
•
To delete a character press the
cool button.
Press the enter button when
desired setting is reached
Press and hold the modify button
Pressing and holding the reset button for five seconds will access the
•
Press enter when the desired
marquee is displayed
Setting the load and unload delays:
following programming features:
•
Press the load or unload button
•
Calendar year setting
To reset the computer to the original
•
Press the modify button
•
Calendar month setting
default setting, turn off the computer,
•
Press increase or decrease
•
Calendar day setting
press and hold the green AUX 1 but-
button to get desired setting
•
Clock hour setting
ton and turn on the computer.
Press the enter button when
•
Clock minute setting
NOVRAM will appear on the LCD dis-
desired setting is reached
•
Bushel counter reset
play. The year, date, time and min-
•
Batch counter reset
utes may be changed now, and the
•
Pressing the increase and decrease
These features are accessed sequen-
shutdown history may also be
buttons simultaneously will access
tially as listed above. Press the in-
cleared.
the following programming features:
crease or decrease buttons to
Note: If the history is cleared the
•
Safety circuit shutdown log
change a setting. Press the enter but-
dryer model number must be reset
•
Dryer model number
ton to move from feature to feature.
or only the bottom fan will operate.
Dryer owner and Airstream associates check the Electronic Monitoring Control System.
49
NOTES
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AIRSTREAM GRAIN CONDITIONING SYSTEMS
1004 E. Illinois St., Box 20
Assumption, IL 62510-0020
phone: 217-226-4421
fax: 217-226-4420
52