Download I. INTRODUCTION CONGRATULATIONS! You

I.
INTRODUCTION
CONGRATULATIONS! You have just purchased the state of the art in
Automatic Screw Feeding. The NASCOMATIC 2001 was designed by NASCO
after years of exposure to other automatic screwfeeders. Problems endemic to all
other screwfeeders have been eliminated resulting in a unit that is dependable,
jam-proof and virtually maintenance free. There are several rules you should
follow to ensure proper operation and long equipment lifetime.
Rule 1: Don't adjust anything unless you have read the operation manual. Your
machine has been factory adjusted and manufactured to high tolerances
to minimize problems you are likely too encounter in a factory
environment.
Rule 2: Connect the device to 115 volt (60 Hz) for US models, 230 volt (50 Hz)
for most non-domestic models. Check nameplate on to of drum shaft to
identify correct type for your device.
Rule 3: Provide a suitably clean (40 micron) and adequately pressured (80-90
psi) air supply. Some screwdrivers may require greater air pressure to
develop adequate torque for your application. Check the supply air gage
when you receive the machine and maintain the setting.
Greater air pressure can be handled by reducing pressure supplied to the
machine via the regulator located on the side of the drum strut.
Adjustment is made by pulling out the knurled knob until it clicks and
turning it clockwise to increase pressure supplied to the machine;
counterclockwise to decrease pressure. The air pressure gage, "Supply
Air Pressure,"located furthest from the drum, indicates supply air
pressure.
Rule 4: Make sure that the screws loaded into the drum are the size for which the
machine was designed. Wrong sized screws and screws out of tolerance
may jam the machine. Check each batch and remove any foreign
material; i.e. wire, paper, plastic, wood, etc., before loading the drum.
Rule 5: Remember, SAFETY FIRST. The screwfeeder works by pressurized
air blowing a pointed object through a tube with a high velocity.
NEVER POINT THE SCREWFEEDER AIR TUBE OR
SCREWDRIVER AT ANYONE WHILE THE AIR IS ON OR
TURNED ON.
II.
SAFETY INSTRUCTIONS
1. Safety and operation instructions should be read completely before equipment
is operated. Retain for future reference.
2. Dry air supplied to the device will increase the useful lifetime of the
screwfeeder and driver. The equipment should not be used near water.
3. Power supply cords should be routed so that they are not likely to be walked
on or pinched. Ensure that air lines are not crimped by other equipment or the
operator. A NASCO TOOL SUPPORT is recommended to keep air and
sensor lines protected from blockage and out of the operator’s way. It also
prevents damage to the driver from dropping.
4. Keep hands and loose clothing away from gears, belt driver and escapement
cylinder and plunger on the automatic screw feeder and away from the "linearlock"mechanism, torque adjustment gear cover and driver jaws on the
screwdriver.
5. The equipment should be connect to a 115 volt AC, (60 Hz) for U.S. models,
and 230 volt, (50 Hz) on International models. Check nameplate to verify
type.
6. Precautions should be taken so electrical grounding is maintained.
7. The equipment should be cleaned only with a clean, dry and slightly damp
cloth or with a suitable solvent such as mineral spirits.
8. The user should not attempt to service the equipment beyond that described
elsewhere in the operating instructions. All other servicing should be referred
to the manufacturer for examination and repair by qualified service personnel.
9. NEVER POINT THE SCREWDRIVER AT ANYONE WHILE THE
MACHINE IS ON OR TURNED ON. The Screwfeeder shoots small
pointed objects (screws) at high velocity through the feed tube and,
therefore, should be considered potentially injurious.
10. Operator and others in general area must wear safety glasses when machine is
in operation.
Airtool Safety Recommendations
For your safety and the safety of others, read and understand the safety recommendations
before operating any screwdriver, pulse tool or nutrunner.
Always wear personal protective equipment. For additional information on eye
protection, refer to Federal OSHA Regulations, 29 CFR, Section 1910.133, Eye and Face
Protection, and ANSIZ87.1, Occupational and Educational Eye and Face Protection.
This standard is available from the American National Standards Institute, Inc., 1430
Broadway, New York, NY 10018.
Hearing protection is recommended in high noise areas (above 85 DBA). Close
proximity of additional tools, reflective surfaces, process noises, and resonant structures
can substantially contribute to the sound level experienced by the operator. Proper
hearing conservation measures, including annual audiograms and training in the use and
fit of hearing protection devices may be necessary. For additional information on hearing
protection, refer to Federal OSHA Regulations, 29 CFR, Section 1910.95, occupational
Noise Exposure, and America National Standards Institute, ANSI S12.6, Hearing
Protectors.
Warning Labels. The warning labels found on Nasco assembly tools are essential parts
of the product. Labels should not be removed. Labels should be checked periodically for
legibility. Replace warning labels when missing or when the information can no longer
be read. Replacement labels can be ordered using the part numbers found in each
respective tool’s Operating Instruction and Service Manual.
Nasco assembly tools are designed to operate on 90 psi (6.2bar) maximum air pressure.
Excessive air pressure can increase the loads and stresses on tool parts and accessories,
and may cause breakage. Higher air pressure can also increase the sound level of the
tool. Installation of a filter-regulator-lubricator in the air supply line ahead of the tool is
recommended and normally provided on any Nasco machines. The use of a quick
disconnect or self-relieving valve within reach of the user of the tool is highly
recommended.
Before connecting a tool to the air supply, check the throttle for proper operation (i.e.,
throttle valve moves freely and returns to closed position). Being careful not to endanger
adjacent personnel, clear the air hose of accumulated dust and moisture. Before
removing a tool from service or changing bits or sockets, make sure the airline is shut off
and drained of air by using the self-relieving valve. This will prevent the tool from
operating if the throttle is accidentally engaged.
When use right angle nutrunners, be sure the throttle is positioned relative to the angle
head so the throttle will not become wedged against an adjacent object in the “ON”
position due to torque reaction. The angle head may be repositioned with respect to the
lever to accommodate proper location for the task. If the tool is to be reversed, locate the
throttle lever in a neutral position that will prevent entrapment. Refer to the tool’s
respective Operating Instructions and Service Manual for additional information.
Screwdrivers and nutrunners with clutches can stall rather than shut off if the clutch is
adjusted over the maximum power output of the tool, or if there is a drop in the air
pressure. Low or fluctuating air pressure can cause tool to fail to shut off! The user must
be prepared to resist the torque until the throttle is released.
Sockets used with pulse tools should be of the impact socket type. Sockets and bits used
with nutrunners and screwdrivers should be of the power tool or industrial type. Use only
Nasco provided bits or sockets. Do not use hand tool sockets on a power tool. Hand tool
sockets can break resulting in a hazard from flying pieces. Inspect sockets, bits and
drives for wear or damage, and replace as necessary. Worn sockets or bits reduce the
power delivered to the fastener, cause drive wear, and increase the chance for breakage
and should not be used.
Some individuals may be susceptible to disorders of the hands and arms when performing
task consisting of highly repetitive motions and/or exposure to extended vibration.
Cumulative trauma disorders such as carpal tunnel syndrome and tendonitis can be
caused or aggravated by repetitious forceful exertions of the hands and arms. Vibration
may contribute to a condition called Raynaud’s Syndrome. These disorders develop
gradually over periods of weeks, months, and years.
It is presently unknown to what extent exposure to vibrations or repetitive motions may
contribute to the disorders. Hereditary factors, vasculatory or circulatory problems,
exposure to cold and dampness, diet, smoking and work practices are thought to
contribute to the conditions. Tool operators should be aware of the following warning
signs and symptoms so that a problem can be addressed before it becomes a debilitating
injury. Any user suffering prolonged symptoms of tingling, numbness, blanching of
fingers, clumsiness or weakened grip, nocturnal pain in the hand, or any other disorder of
the shoulders, arms, wrists, or fingers is advised to consult a physician. If it is
determined that the symptoms are job related or aggravated by movement and postures
dictated by the job design, it may be necessary for the employer to take steps to prevent
further occurrences. These steps might include, but are not limited to, repositioning the
work piece or redesigning the workstation, reassigning worker to other jobs, rotating
jobs, changing work pace, and/or changing the type of tool used so as to minimize stress
on the operator. Some tasks may require more than one type of tool to obtain the
optimum operator/ tool/ task relationship.
Nasco has a complete line of assembly tools including straight, right angle, pistol grip,
and stall bar types that make possible the correct ergonomic match of the operator, tool,
and task. Tool stands and balance arms are available to absorb the torque reaction of
assembly tools while balancing the weight of the tool for improved ergonomic
applications. Higher torque screwdrivers can be equipped with grip sleeves and dead
handles.
The following suggestions will help reduce or moderate the effects of repetitive work
motions and/or extended vibration exposure:
Use a minimum hand grip force consistent with proper control and safe operation.
Keep body and hands warm and dry (cold weather is reported to be a major factor
contributing to Raynaud’s Syndrome)
Avoid anything that inhibits blood circulation
- Smoking Tobacco (another contributing factor)
- Cold Temperatures
- Certain Drugs
Tasks should be performed in such a manner that the wrists are maintained in a
neutral position, which is not flexed, hyper-extended, or turned side to side.
Stressful postures should be avoided - select a tool appropriate for the job and
work location.
Avoid highly repetitive movements of hands and wrists, and continuous vibration
exposure (after each period of operation, exercise to increase blood circulation).
Interrupt work, activities, or rotate jobs to provide periods free from repetitive
work motions.
Keep tool well maintained and replace worn parts.
Poor quality fasteners and worn sockets and bits increase vibration during run
down - use quality fasteners and replace worn sockets and bits.
Work gloves with vibration reducing liners and wrist supports are available from some
manufacture’s of industrial work gloves. Tool wraps and grips are also available from a
number of different manufactures. These gloves, wraps, and wrist supports are designed
to reduce and moderate the effects of extended vibration exposure and repetitive wrist
trauma. Since they vary widely in design, material, thickness, vibration reduction, and
wrist support qualities, it is recommended that the glove, tool wrap, or wrist support
manufacturer be consulted for items designed for your specific application.
WARNING! Proper fit of gloves is important. Improperly fitted gloves may
restrict blood flow to fingers and can substantially reduce grip strength.
OVERVIEW OF MACHINE OPERATION
Nascomatic 2001 Automatic Screwfeeders and Drivers generally operate as follows:
The Bowl:
Screws are placed in batch into the drum. The drum rotates continuously by means of
an electric motor unless a time delay circuit is incorporated. As the drum turns some
screws are lifted up and dropped onto the platforms. The rotation between drops is
typically 45 degrees, although a large latitude is normally acceptable as long as the
overall track replenishment rate is sufficient for your needs.
Some of the screws will land in the track properly oriented - most will fall off or miss
the track entirely. As long as at least one screw per cycle is delivered, on average,
into the track, the track will stay full of screws.
The Track:
A qualifying block is located just inside the drum. This not only provides a place to
mount the stabilizer bar, but it is shaped to allow only screws in tolerance and at the
proper orientation into the track. If a screw is too large, it is stopped at this point
and thus cannot cause a jam further down in the system where it can be troublesome.
To get rid of these oversized or improperly oriented screws, a blast of air is injected
directly at the spot where a blockage may occur. This occurs every time a screw is
delivered from the track to the driver. A manifold to aim the air properly is
mounted between the two sides of the track just below the qualifying block. A 1/4"
O.D. black air line runs along the track and carries the air from the escapement to the
manifold.
The track is vibrated in order to move the screws down the track and, in particular,
to bring the first screw in line into the escapement. This is done by means of a
pneumatically driven ball eccentric vibrator mounted in a vertical plane in the track
strut. A "Track Regulator" on the chassis adjacent to the track controls the air
pressure of the flow to the valve and thus the vibration frequency. Each screw may
require a different setting although typically a value between 20 and 45 psi is
optimal.
As the screws slide on the track towards the escapement they are often allowed to
shingle. Notice that there is a significant amount of clearance (sometimes up to 1/4")
over the screw heads. This is desirable in order to reduce friction of the screws in
the track. The only place in the track where the screws are not permitted to shingle
is directly in front of the escapement. To control the screw heads, a spring clip is
often used to lock the stabilizer down.
Whenever the stabilizer is lifted up, it is recommended that:A) the machine is tilted backwards so that the track is horizontal or tilted
towards the rear of the machine;
B) the screws be pushed back manually about 1/2";
C) the stabilizer bar is dropped to its lowest position, and the clip flipped on
top of the bar.
The Escapement:
The patented escapement has a hardened tool steel rotor with a machined pocket
designed to allow only one screw of the proper size to slide into the pick-up point.
As the start of a cycle, the rotor is rotated 90 degrees. At this position, the semicircular cut-out in the rotor meets up with the second half of a completely circular
hole, at which point the screw must fall straight out of the escapement into the
blow-feed tube.
The 2" stroke cylinder that runs alongside the track always extends and retracts its
full length. The clevis at the free end of the cylinder rod is screwed onto the
piston rod and clamped onto the rotor lever so that a perfect circle forms in the
escapement when the cylinder is fully retracted, and the rotor pocket is aligned
with the left side of the track when the cylinder is fully extended.
On the bottom surface of the rotor is a machined channel that accepts the rotor
valve - a flat piece of stainless steel that covers the drop hole position when the
rotor is in line with the track. Its purpose is to restrict air that blows the screw
through the tube from escaping upwards through the rotor housing.
Logic:
Several events are necessary for automatic screw feeding and these must occur in
the proper sequence and for the proper amount of time. The escapement must
shift long enough for a screw to drop through the escapement, the air purge at the
qualifying block must be long enough to clear mis-oriented screws, the screw
must be blown through the blow-feed tube after screw in the jaw has been driven
into the component and the blast of air has to be long enough for the screw to go
from the escapement to the front end of the driver.
These events are controlled by an air logic system of four poppet valves and a
timing element mounted on a manifold under the chassis. The four valves control
the sequence of events and have no adjustment; the timing element controls how
long air is blown through the tube to deliver the screw to the driver. Once the
timer is set for the particular screw for which the machine was built and the length
and diameter of blow feed tubing, it need not be readjusted.
Sequence of Events:
As soon as the machine is connected to its air supply, a blast of air will be
injected into the track, thus moving any screws left in the hose to the jaw. It will
not feed another screw at this time.
The signal to cause anything else to occur is generated by the electro-pneumatic
valve mounted behind the bowl on the motor housing. The valve normally doesn’t
allow air to pass from the supply hose to the signal line.
When the signal is received at the logic block port "SIG," the escapement cylinder
retracts, causing the rotor to shift 90 degrees, bringing a single screw to the drop
hole position. The air cylinder on the driver is advanced to its fully extended
position inserting the pin through the upper jaw into the spring in the lower jaw
and then driving both into the part.
When the signal is dropped, the following occurs simultaneously:
a) the escapement cylinder extends forward;
b) the rotor returns to its home position, allowing the next screw in track to
move into the pick up point and bringing the rotor valve in position to
cover the drop point;
c ) a blast of air is injected into the escapement block moving the screw that
was dropped into the tube to the driver;
d) a portion of the blow feed air is injected into a block under the track gap in
the bowl ejecting improperly oriented, oversized and properly oriented
screws from the area in front of the qualifying block;
e) the air cylinder on the driver retracts fully.
After the preset time in the logic block elapses, the following events occur:
a) the blow feed air is shut off;
b) the jaw on the screwdriver receives the screw;
c) screws on the lift vanes in the bowl fall at random onto the drop platforms
and slide forward towards the qualifying block. Some will land properly
into the track, many will fall off and be re-circulated.
The Driver:
The jaw assembly is made for the particular size screw for which the machine was
built. Generally, screw somewhat shorter or longer than the original design
screw may be used in the same system without difficulty. Check with the factory
if you are considering a charge.
NASCOMATIC 2001 FEEDER PARTS LIST
DWG.# 492-301001
NO.
DESCRIPTION
PART NUMBER
QTY.
1
CHASSIS
002-41200008
1
2
END PLATE
002-41400047
1
3
POWER VALVE
024-86622012
1
4
S.H.C.S 8-32 x 1/2"
011-11110052
2
5
CHASSIS COVER
018-41500003
1
6
BUMPERS
041-89200001
4
7
B.H.C.S. 10-32 x 1/2"
011-11110009
4
8
1/8 NPT TO 10-32 REDUCER
024-87500001
2
9
FITTING BARB 1/16"
024-87820002
13
10
URETHANE TUBING 1/16"
029-81220002*
-
11
FEED TUBING
029-81220003*
-
12
TRACK STRUT
002-41200001
1
13
QUICK RELEASE PIN
140-16900001
1
14
S.H.C.S 1/4-20 x 1 1/2"
011-11110002
2
15
STRUT BASE
002-41410010
1
16
WASHER
011-20100001
2
17
STRUT GASKET
016-21310001
1
18
POST VANE
001-89100010
8
19
DRUM
002-89100002
1
20
SLEEVE VALVE
036-86630001
1
21
B.H.C.S. 10-32 x 1/2"
011-11110009
8
22
AIRLINE SUPPLY
002-81260002
1
23
STREET ELBOW 1/4"
002-87200003
1
24
DRUM SPACER
002-28400001
1
25
CG END PLATE
002-41400011
1
26
HOUSING MOUNT
002-41400004
2
27
S.H.C.S 10-32 x 5/8"
011-11110050
2
28
DRIVE SHAFT
012-22000001
1
29
SHAFT SPACER
011-28200001
1
30
DRIVE BUSHING
037-21100001
1
31
REGULATOR
002-86110001
1
32
BUSHING SPACER
002-28100001
1
33
REGULATOR NUT
031-12600001
1
34
MOTOR HOUSING
002-41200004
1
35
SERIAL NUMBER PLATE
076-06200001
1
36
COVER MOUNT
002-41400031
2
37
IN LINE Q.D.
017-87600002
1
38
DRIVE SCREW
011-11130002
4
39
S.H.C.S 1/4-20 x 1"
011-11110011
6
40
S.H.C.S 10-32 x 1/4"
011-11140001
6
41
MOUNTING PLATE
002-89100007
1
NO.
DESCRIPTION
PART NUMBER
QTY.
42
TIMING PULLEY
038-89100009
1
43
TIMING BELT
038-89100001
1
44
TIMING PULLEY
038-89100010
1
45
BACK LINER
016-89100021
1
* These parts are configured to a specific machine design.
When ordering parts specify item number, description, part number and machine serial number.
NASCOMATIC 2001 FEEDER PARTS LIST
DWG.# 492-301001
46
MOTOR
014-86220001*
1
47
FITTING BARB 1/8"
002-87820001
3
48
LOCK NUT 10-32
011-12500003
1
49
B.H.C.S. 10-32 x 1"
011-11110031
1
50
TRACK SPACER
011-28700001
2
51
S.H.C.S 10-32 x 5/8"
011-11110013
1
52
TRACK EJECTOR
002-41400008*
1
53
SPRING
002-27100001
2
54
TUBING URETHANE 1/8"
029-81220001*
-
55
"L" FITTING
002-870150021
9
56
SUB PLATE ADAPTER
002-41100024*
1
57
SUB PLATE ESCAPEMENT
002-41400007*
1
58
ROTOR LEVER
019-16300001
1
59
ROTOR HSG. ESCAPEMENT
002-41400005*
1
60
HEAD PLATE ESCAPEMENT
002-41400001*
1
61
TRACK STABILIZER
002-41400006*
1
62
S.H.S.S 10-32 x 1/2"
011-11140003
1
63
S.H.C.S 10-32 x 5/8"
011-11110050
4
64
VIBRATOR
002-86400001*
1
65
PIVOT PIN
017-16500001
1
66
PIVOT, RETAINER
017-16700001
1
67
PIVOT BRACKET
017-14200001
1
68
B.H.C.S. 10-32 x 3/8"
011-11110003
1
69
FACE PLATE
002-89100009
1
70
B.H.C.S 1/4-20 x 5/8"
011-11110005
1
71
ROD, CLEVIS
002-41400013
1
72
S.H.S.S 10-32 x 1/4"
011-11140025
2
73
LEVER, RETAINER
002-42100002
1
74
ROTOR
002-42100001*
1
75
ROTOR VALVE
002-41300001*
1
76
AIR CYLINDER
017-86308DP2
1
77
CLIP, SPRING
129-2760A175
1
78
B.H.C.S. 10-32 x 1/2"
011-11110009
1
79
STRUT, SPACER
040-28300001
1
80
TRACK, RIGHT
002-41400003*
1
81
DROP PLATFORM, RT
018-41300003*
1
82
DROP PLATFORM, LF
018-41300002*
1
NO.
DESCRIPTION
PART NUMBER
QTY.
83
TRACK, LEFT
002-41400002*
1
84
QUALIFYING, BLOCK
002-41400009*
1
85
B.H.C.S. 10-32 x 3/8"
011-11110003
1
86
SWIVEL ELBOW 1/4"
017-87210001
1
87
REGULATOR, PRESSURE
036-8660R701
1
88
B.H.C.S. 1/4-20 x 5/8"
011-11110005
2
89
NASCOLOGIC
024-86610001
1
90
HOOK-UP CORD
028-82500001
1
91
CORD GRIP, PLASTIC
010-82710001
1
* These parts are configured to a specific machine design.
When ordering parts specify item number, description, part number and machine serial number.
NASCOMATIC 2001 FEEDER PARTS LIST
DWG.# 492-301001
92
CLOSE NIPPLE
002-87300009
1
93
HOSE BUNDLE
025-81220009*
1
94
FILTER
031-86120001
1
95
COVER PLATE
002-41300014
1
96
FACE SEAL
002-89100024
1
97
LEFT FACE BRACKET
018-41300004
1
98
RIGHT FACE BRACKET
018-41300005
1
99
QUICK RELEASE PIN
140-16900002
1
100
GAGE
032-86500002
1
101
SWITCH
027-82100002
1
102
FUSE HOLDER
027-82410001
1
103
FUSE
027-82210001
1
104
B.H.C.S. 10-32 x 1/4"
011-11110007
4
105
B.H.C.S 10-32 x 1/2"
011-11110009
6
107
B.H.C.S 1/4-20 x 1/2"
011-11110038
4
108
MOUNTING PLATE, R111
036-8660R111
1
109
LUBRICATOR
031-86130002
1
110
SWIVEL ELBOW 1/4 x 5/16
036-87210003
1
111
TERMINAL BOARD
027-82310001
1
112
CAUTION LABEL
076-06100001
1
113
NIPPLE 1/4" x 2" MODIFY
002-87300001
1
114
NIPPLE 1/4" x 2"
121-87300001
1
115
WALL LINER
002-89100018
1
116
NYLON TUBING
029-81210004*
-
117
HELITUBE WRAP
033-81130001
2
118
CLEAR HOSE COVER
033-81400001*
-
119
TIE WRAP 1/8" KSM
033-15400001
6
120
CORD GRIP, PLASTIC
010-82710002
1
121
NEEDLE VALVE
024-8660MNVIK
1
122
VALVE, 3 WAY
025-86600002
1
123
TIMED BLOW OFF BRACKET
002-41200018
1
124
NUT, HEX 10-32
011-12100008
1
125
QUICK DISCONNECT
152-87600001
4
126
FUNNEL
002-42300076
1
* These parts are configured to a specific machine design.
When ordering parts specify item number, description, part number and machine serial number.
#14 DRIVER ASSEMBLY
LINEAR LOCK PARTS LIST
DWG.# 493-301614
ITEM
DESCRIPTION
PART NUMBER
QTY.
1
3 WAY VALVE
025-86600001
1
2
LOCK NUT
025-12500002
1
3
LOCK WASHER
025-20200002
1
4
REVERSE BUTTON
SEE CLECO MANUAL*
1
5
AIR-SUPPLY PORT
SEE CLECO MANUAL*
1
6
LINEAR LOCK CYLINDER
017-86300001*
1
7
CYLINDER MOUNT
002-41300027*
1
8
S. H. DOG POINT 10-32 x 3/16
011-11140013
2
9
KNEE, LINEAR LOCK
002-42400003*
1
10
BALE
SEE CLECO MANUAL*
1
11
CLUTCH HOUSING
002-41100025*
1
13
#14 DRIVER
SEE CLECO MANUAL*
1
14
TUBE ADAPTER
002-42100010*
1
15
CLAM JAW
002-42400024*
1
16
SPIRAL PIN
001-16400001
2
17
CLAM YOKE
002-42400054*
1
18
BALL BEARING
023-230000001
1
19
YOKE HOUSING
002-42400086*
1
20
SWIVEL ELBOW
036-87210001
1
21
STREET ELBOW
002-87200003
1
22
RETURN SPRING
043-27700001*
1
23
S.H.S.S. 10-32 x 1/2
011-11140024
1
25
SWIVEL L
FITTING
002-8780150021
4
26
BARB FITTING 1/16
002-87820002
1
27
BARB FITTING 1/8
024-87820001
2
28
URETHANE TUBING 1/8
029-81220001
1
29
PLASTIC QUICK DISCONNECT
152-87600001
1
30
FEED TUBE
029-81220007*
-
31
URETHANE TUBING 1/16
029-81220002
-
32
BIT OR SOCKET
002-56100001*
1
33
CONNECTOR (OPTIONAL)
019-11140015*
1
34
EXTENSION
002-59400001*
1
35
S.H.C.S. 6-32 x 3/8
011-11110024
4
36
S.H.C.S. 6-32 x 7/16
011-11110087
2
37
S.H.S.S. 6-32 x 1/4
011-11140010
1
38
S.H.S.S. 1/4-28 x 1/4
011-11140011
1
39
AIR HOSE
029-81210001
1
ITEM
DESCRIPTION
PART NUMBER
QTY.
* These parts are configured to a specific machine design.
When ordering parts specify item number, description, part number and machine serial
number.
#14 DRIVER ASSEMBLY
LINEAR LOCK PARTS LIST
DWG.# 493-301614
40
SIGNAL VALVE BUSHING
025-86600001
1
41
SPRING, JAW
137-27100008*
2
42
YOKE, HAMMER
002-42400054*
1
43
STEM, YOKE
002-41400020*
1
44
IN-LINE KNEE
002-41400217*
1
45
CANTILEVER MANDREL
002-42400016*
1
46
CANTILEVER SPRING
042-42500008*
1 SET
47
CANTILEVER YOKE
002-42400001*
1
48
S.H.S.S. 10-32 x 1/4
011-11140015
3
* These parts are configured to a specific machine design.
When ordering parts specify item number, description, part number and machine serial
number.
IV.
INITIAL SET-UP
Your NASCOMATIC 2001 has been packaged to ensure adequate protection to the
machine under normal shipping conditions. Set the machine at its work station. Be sure
that the large diameter screw feed tube is set between the two back feet and that other
hoses are not crimped (Figure 2).
Figure 2. Proper Location of Hoses.
Cut any nylon ties provided to secure machine components during shipping. Typically,
the upper track stabilizer bar will be the only secured member, but on some models, the
driver and/or the hose leading to it will be tied to each other or the machine.
Starting at their connections to the machine, straighten the air line, electric power cord
and hose bundle to the screwdriver to remove any kinks or crimps and to straighten and
relax the hoses.
Plug in the electric cord to 115 volt (60HZ) grounded outlet for U.S. models, 230 volt
(50HZ) grounded outlet for most non-domestic models. Check the nameplate on top of
drum shaft to identify correct type for your machine.
Add 10 weight, non-detergent oil to the lubricator by unscrewing hex plug on top.
Fill 1/2 to 3/4 full and replace filler plug (Figure 3).
Figure 3. Fill lubricator with
10 weight non-detergent oil.
Loosen Hex Plug and add oil
Plug in the air supply hose to a suitably clean (40 micron) and adequately
pressured (80-90+ psi) air supply.
In 6, 8 or 10 inch diameter add approximately fiver pounds of screw to the
drum (or enough to fill the bottom of the drum up to the lower lip of the
face plate) by pulling back on the face cover and dumping the screw in
(Figure 4 ). Add a maximum of 10 lbs. of screws in 14 inch drums.
BE SURE THAT ONLY SCREWS WITHIN THE TOLERANCE FOR WHICH
THE MACHINE WAS MANUFACTURED ARE USED. Mix screws, screws
out of tolerance, or foreign material in the screw supply are the most
common case of problems in automatic screwfeeding.
Figure 4.
When Loading screws, be sure
screws are within tolerances and
batch is free of foreign material.
Turn the on-off switch to "on". The drum should now rotate.
Slide the air-supply upward (in the
direction of the arrow) to provide air
to the machine (Figure 5). Check
the supply air pressure gage for
adequate pressure.
Adjust, if
necessary by pulling safety cap on
supply regulator (black knob at the
back of the drum support strut) Until
it clicks, and turning clockwise or
counter-clockwise.
After
adjustment, push in safety cap until
it clicks.
Figure 5. Air supply switch.
Figure 6. Track vibration regulator.
Adjust track vibration regulator, if necessary, by turning knob on top of cylindrical
regulator next to track strut clockwise to increase pressure and speed of vibrator, counterclockwise to decrease pressure and speed of vibrator (Figure 6). Initially, keep the
vibrator at the valve set at the factory. After some experience with rate of screw use, you
may change the setting. A locknut between the knurled cap and the body can be set
against the body to lock in the setting. NOTE: spontaneous change in the pitch of
vibration are normal due to resonance within the vibrator and the supply air.
On some units, a constant track blow-off sub-system is use. when screws are head heavy,
jets of air are provided in the bowl through the track and/or qualifying block to eject
improperly oriented screws. A separate miniature regulator is provided on the base in
front of the bowl (Figure 6). The regulator is set at the factory to maximize the feed rate.
The knurled top is turned clockwise to decrease air flow; counter-clockwise to increase
air flow.
Periodically, pump the screw driver manually to eject a screw (Figures 7a and 7b).
Except for units which have separately timed blow-off’s, this action causew a mometary
pulse of air to clear the upper track inside the drum of improperly oriented screws and
will allow properly oriented screws to fill the track. Repeat as necessary.
Figure 7a. Clamshell jaw.
Figure 7b. Cantilever spring jaw.
Proper method for squeezing jaw to
remove screws. To pump jaw, pull
jaw yoke towards screwdriver body.
NEVER PRY SPRINGS OPEN.
This may permanently damage the
springs. Pump jaw as shown.
V.
NORMAL OPERATION
The NASCOMATIC 2001 has been designed and manufactured to be simple to operate
and dependable with virtually no adjustment necessary.
Follow these simple rules to successfully operate the machine.
Getting started each day
- Be sure the unit is plug into a live 115 volt grounded outlet (3-prong).
- Set the on-off toggle switch to on. Six, eight or ten inch drums should be filled with
between 100 screw and 5 pounds of screws for which the machine was designed
and manufactured, while 14 and 15 inch drums may be loaded with up to 10 lbs. of
screws.
- Be sure the air supply is hooked up to a clean air supply with 90+ psi.
- Turn the air supply on by sliding the air valve in the direction of the imprinted
arrow; i.e. towards the machine (Figure 8). The track vibrator will begin to operate
and the air supply and track pressure gages will actuate . On "linear-lock" models,
the driver jaw springs forward and retracts.
- Let the track fill completely with screws before beginning repetitive screwdriving. It
may be necessary to periodically pump the driver manually to clear disoriented
screws from the qualifying block and get good screw into the track.
- If no screw is in the jaw after the machine is turned on, depress the jaw towards the
driver momentarily (by pushing against a table or work surface or pulling by hand)
and quickly release. A screw will be sent from the escapement mechanism to the
driver jaw.
- Locate screw over work-piece hole and, for models incorporating the push-to-start
feature, simply push lightly to start screw drive.
IMPORTANT: HOLD SCREWDRIVER PERPENDICULAR TO THE HOLE
TO AVOID CROSS-THREADING.
- On models incorporating automatic shut-off clutches, release forward pressure only
after the screwdriver "clicks off"and screw driving stops. For ratcheting or stall-type
clutches, release forward pressure when the screw is driven to depth. On lever or
push button to start screw driving.
- If you release forward pressure before screwdriver motor shuts off at the preset
torque, and then press forward again, you will be sending a signal to the
screwfeeder to send another screw which will result in a possible jam. Remember to
let the clutch do its job and let the screw reach its preset torque.
- NASCOMATIC drivers with reverse can back-out screws as follows:
a. ( I ) On "linear-lock" models - hold the screwdriver in one hand and pull the egg
shaped collar in towards the driver until it’s flush with the screwdriver clutch
housing body. Twist clockwise to engage lock and let go of collar. A screw
left in the driver will be ejected automatically ( Figure 10 ).

Figure 10. To reverse “linear lock” models,
pull on egg shaped collar and
twist clockwise.
b. Depress and hold the reverse button fully. If not
fully depressed, screwdriver speed will be reduced.
c. Be sure that there is no screw at the driver tip. If
there is, knock or pull it off.
d. Engage screw head with driver tip, press forward
and extract screw(s). NOTE: if you release reverse
button while motor is running you cannot use
reverse again until you go through step 10e, and
10a-10d, in that order.
e. To automatically feed and drive screws again, twist
collar or yoke counter-clockwise, and push jaw
forward with one hand until a screw is sent to the
cycle automatically after the counter clockwise
twist.
Figure 12.
Using reverse. Keep reverse button depressed
before and during screwdriving.
- If the machine is to be moved, shipped or serviced:
a. Turn power switch to off. Unplug power cord.
b. Shut-off air at shut-off valve. Disconnect air supply hose from in-house air
supply.
c. Eject any screw left in jaw to avoid its tumbling in the driver jaw and causing a
jam.
d. Wrap all hoses and cords around the machine.
e. Lift the machine by inserting fingers in the drum and pulling up on the metal face
plate or by carrying it from both ends of the base. Do not lift by pulling on track,
escapement, hoses, regulator or other components.
f. If machine is to be tilted or shipped, DRAIN THE FILTER AND
LUBRICATOR THOROUGHLY. FAILURE TO DO SO MAY CAUSE THE
LOGIC SYSTEM TO FLOOD.
IV.
GENERAL CARE AND MAINTENANCE
Your Nascomatic 2001 has been designed and manufactured to provide years of
dependable and trouble-free screwfeeding with minimum care. Follow these simple rules
to ensure proper operation and to maintain warranty coverage.
Rule 1:
Don’t adjust anything unless you have read the operation and service manual.
Your machine has been factory adjusted and manufactured to high tolerances
to minimize problems you are likely to encounter in a factory environment.
Rule 2:
Connect the device to 115 volt (60 Hz) for US models, 230 volt 50 Hz) for
most non-domestic models. Check nameplate on top of drum shaft to identify
correct type for your device.
Rule 3:
Provide a suitably clean (40 micron) and adequately pressured (80-90 psi) air
supply. Greater air pressure can be handled by reducing pressure supplied to
the machine via the regulator located on the back side of the motor housing.
Adjustment is made by pulling out the knurled knob until it clicks and turning
it clockwise to increase pressure supplied to the machine; counter-clockwise
to decrease pressure (Figure 13 ) . The air pressure gage, "Supply Air
Pressure,"located furthest from the drum, indicates supply air pressure.
(Figure 14).
Figure 13.
Air supply regulator.
Figure 14.
Air supply pressure gage.
Rule 4:
Make sure that the screws loaded into the drum are the size for which the
machine was designed. Wrong sized screws and screws out of tolerance may
jam the machine. Check each batch and remove any foreign material; i.e.
wire, paper, plastic, wood, etc., before loading the drum.
Rule 5:
Lubricate the driver by adding oil to the lubricator located on the
"downstream" side of the main air regulator; i.e. to the right of the drum strut
when facing the machine from the back (Figure 15). Use only Nascolube 10
weight non-detergent oil. Note that the screwfeeder itself and the air blasted
through the screw feed tube are non-lubricated. Only the screwdriver air
motor uses oil for lubrication and failure to lubricate properly may void the
warranty on the driver and lead to premature screwdriver failure.
Rule 6.
About once every two weeks, clean out the track mechanism by wiping the
upper edges of the lower track, the underside of the upper track arm, and the
qualifying gate located near the upper end of the screw feed track. These
areas have a tendency to build up oil gums and plating material from screws
which can cause screws to stick along the track. A suitable solvent, such as
CRC or mineral spirits, should be used. Clean and wipe dry.
Rule 7.
Periodically clean the rotary drum of all contents. As batches of screws are
added some proportion of debris will be added inadvertently. As good screws
are used, the debris will collect and build up as a proportion of all material in
the drum. This may affect the feed rate of the machine. To empty the drum:
A- Disconnect the blow feed air supply hose where it enters the escapement
by depressing the collar and pulling the hose out. Pull extra lengths of
tubing that have been tucked into the base of the machine that attach to
escapement air cylinder. vibrator, and the blow feed tube. On models
with constant air blow-off, separate the air tubes going into the drum
from the base which would be provided with quick disconnect twist
fittings.
B- Remove the entire track and/or track strut by pulling the quick release pin
from the track strut (Figure 16).
C. Carefully lift the track assembly upward and forward until clear of the
mounting block. Be sure not to bend the drop platforms on the track in
the drum. It may be necessary to turn the drum motor on momentarily
until the lift vance allow clear egress.
D. Loosen the two set screws holding the drum on the axle, using a six inch
tee handle allen wrench or equivalent. Holding the drum below, slide it
forward and lift. Dump the contents by shaking the drum.
E. To replace, slip the drive belt over the drum pulley and lift up while
inserting the drive axle into the drum. Align the drum flush against the
axle bushing spacer and push the axle forward until snug. Tighten the
two set screws. Carefully place the track back in position, reattach any
hoses that were removed, and slip any extra lengths of hose back into the
base.
F. The Frequency that cleaning the drum may need to be done depends
totally upon the quality of your screw supply and the care taken to load
the machine with proper screws.
Rule 8:
Periodically, drain the air filter by turning off air to the machine, pushing
plastic knob at the bottom of the filter.
Rule 9:
In case of an operational problem developing suddenly, begin to check for the
simplest and most obvious problems first.
Is the air on?
Is the screw feed tube squeezed by any equipment or is anyone
standing on it?
Are there screws in the track? In the drum?
Are there two screws in the screwdriver jaw?
Is air leaking from any fittings or hoses?
Are any hoses crimped or blocked by the operator , enclosures, or
equipment?
Follow the trouble shooing guide "What To Do If ..." in the order shown if a
problem develops.
Rule 10:
Remember, SAFETY FIRST. The screwfeeder works by pressurized air
blowing a pointed object through a tube with a high velocity. NEVER POINT
THE SCREWFEEDER AIR TUBE OR SCREWDRIVER AT ANYONE
WHILE THE AIR IS ON. Nasco Industries, Inc. can not be responsible for
any damages incurred due to failure to observe safety rules.
VIII.
DRIVER MAINTENANCE
The greatest variability is Nascomatic 2001 Automatic Screwfeeding system occurs
in the screwdrivers and driver assemblies as many different styles (pistol grip or
straight) sizes, speeds, type of clutches, bit or sockets or even types or driver:
handheld, fixture mounted or robotic; are available.
The original equipment manufacturer's screwdriver owner’s manual is enclosed.
Follow the instructions regarding care and maintenance of the scredriver itself
specified in the manual.
Should it be necessary to order spare parts for the screwdriver use the part numbers in
the screwdriver manual itself. For entire sub-assemblies you may specify the
assemblies listed in the Schedule of Materials Chapter III.
The most common requirements for screwdriver care are torque checking, torque
adjustment, and replacement of bits or sockets.
1. Torque Check
The optimal method of checking the torque setting is to feed and drive a screw as
normally done on your components, but to do so directly on a power tool
analyzer. It will be necessary to obtain an adapter with a female thread
corresponding to the thread and pitch of your screws (available from Nasco
Industries for most thread styles).
An alternative method is to extend the bit or socket using the procedures
described in Chapter V.10 for putting the screwdriver in reverse. Place the bit or
socket directly on the analyzer input using an adapter incorporating a facsimile of
the head of the fastener.
Finally, a torque Indicator can be applied to the screw after it has been driven.
2. Torque Adjustment
On many screwdrivers the clutch is designed to allow adjustment without
disassembling the driver assembly. This feature has been maintained in the
Nascomatic 2001. These models will have a black spring steel hole cover on the
clutch housing (Figure 17). To adjust the torque, turn the air supply off and slide
the hole cover around to expose the adjustment slot. Expose the bit or socket by
following procedures for putting the screwdriver in reverse (Chapter V. 10) and
turn the bit or socket until the semi-circular gap opposite the adjustment gear is
visible.
Crank a #1 phillips screwdriver clockwise in the gap to increase torque; counterclockwise to decrease torque. Do not bottom out the spring. Turn the air back on, get the
screwdriver jaw out of the locked-back position, and recheck torque as described above.
On some drivers, special wrenches are necessary to adjust torque. Follow the instructions
in the attached manual.
Larger screwdrivers may have clutches which cannot be adjusted externally. The
Nascomatic 2001 allows access to the clutch without of any tools. Turn the air supply to
the 2001 off. Remove the (black) air supply hose to the screwdriver by depressing the
collar on the swivel quick disconnect elbow at the inlet and then pulling the hose free
(Figure 18). Separate the in-line quick disconnect plastic fitting on the hose that leads
from the air inlet to 3-way hex valve on the clutch housing by compressing and twisting
the two halves. The entire end of the screwdriver will now be free.
Unscrew the back end of the screwdriver from the clutch housing by turning the air motor
and gear reduction housing together clockwise relative to the clutch housing (it’s a left
hand thread).
The clutch is now visible in the clutch housing. On machines using screwdriver bits
instead of sockets, simply pull the clutch out with the bit and extension attached. On
socket driver machines, the socket with or without the extension may need to be removed
from the front end of the gun first before the clutch can be removed. Follow the
instructions Below to remove the socket.
Torque adjustment should follow the instructions in the screwdriver manual. To test the
torque while the screwdriver is disassembled, you can use a static torque analyzer directy
on the clutch for a rough estimate. Reverse the procedures to reassemble he driver. Be
sure the bit or socket extension seats into the clutch with a positive "click".
CAUTION: DO NOT LOSE THE AXIALLY CENTRAL PUSH-ROD ON AUTO PUSHTO-START MODELS FROM THE AIR MOTOR ASSEMBLY DURING TORQUE
ADJUSTMENT.
3. Changing Bits or Sockets
Just as with non-automatic screwdrivers, bit and sockets are subject to wear and
will need to be replaced periodically.
On screwdrivers with clutch adjustment slots, the bit and extension can be
removed from the front of the driver (Figure 19) as follows:
. Turn air off and put screwdriver in reverse lock position.
b. Slide clutch adjustment cover until slot is visible. Using a screwdriver,
apply
force on the clutch itself depressing it towards the rear of the
screwdriver.
c. With pliers or vice-grips, pull the bit and extension out of the jaw.
On driver where a spring loaded pin extension are used, put the screwdriver in the
reverse position and shut air off. Rotate the socket until the pin hole is visible,
depress the pin and remove the socket.
If the above procedures do not apply, remove the clutch as described in thr
Torque Adjustment scetion above. Remember, no tools are needed to do this.
Most bits are narrow enough to follow the clutch out of thr rear of the clutch
housing. Other bits and most sockets will separate from the clutch as it is removed
and can then be pushed out the front end of the jaw by inserting a screwdriver in
the clutch housing and pushin forward.
NOTE: Although ecery attempt has been made to use bits and sockets as close to
standard as possible, some modifications may have been made in ID, OD, length or taper.
DO NOT REPLACE BIT OR SOCKET UNTIL YOU HAVE COMPARED IT DIRECTLY
TO THE ONE YOU ARE REMOVING AND FOUND IT TO DE IDENTICAL. CHECK
WITH FACTORY IF YOU HAVE FOUND ANY DEVIATIONS.
Except for sockets which are pinned to the extension, all bits and sockets have a male or
female 10-32 thread which connect to a female thread in the extension (Figure 20). On
bits or sockets having a female thread, a separate 10-32 threaded rod is used. All threads
are right hand threads. Normally, the bit will form the lead 7/8" to 1" of the driver bit and
extension assembly. Unscrew the bit or socket with pliers or vice grips on the bit or
socket and 1/4" hex wrench on the extension. Add a small smear of non-permanent
Locktite(TM) to the replacement, reassemble and retghten. Replace the extension into the
clutch and reassemble the driver.
VIII.
WHAT TO DO IF...
CURE
PROBLEM
Drum and drum axle (under supply
air regulator) don’t rotate
- Check if power switch is in "on"
position.
- Check if plug is in electrical socket
with power.
Figure 21
- Check fuse and replace, if necessary,
with .75 amp slow blow fuse.
- Check condition of power cord.
- Look inside drum to see if screws are
piled upon the drop platforms. (This
might happen if the drum was left
running while the air and vibrator were
off). Clear the pile from the platforms.
Do not exceed bowl capacity.
With motor on,
observe gear and
pulley components.
- Turn off air supply by sliding air valve
and listen for unusual sound from
motor. Replace motor if necessary.
- Authorized personnel only - Unplug
power cord and check that all electrical
connectors are tight. Warning, a fatal
shock may result from improper care
in this process. Open base of machine
by removing four button head screws
in corners of base, two in the center,
and slide cover plate out of the way.
- Check for loose, misaligned pulley or
broken drive belt and repair or replace
as necessary (Figure 21).
Motor turns but drum doesn’t.
Figure 22. Check gear and
pulley components.
- Check for loose set screws on motor
pulley (Figure 22). Tighten as
necessary.
- Check for loosening of four motor
mount screws are tighten if necessary
(Figure 23). Align motor for correct
tension belt. Check clearance for
screws on rear drum plate and reset
screws on drum to allow for proper
clearance. Bronze collar should turn
freely without excess axial play.
Unusual hissing noises.
- Check all fittings for loose connections
and tighten as necessary.
Improper speed or no vibration of track
(Indicated by unusually quiet operation
and/or lack of vibration sensed when
touching screw track or screw track
stabilizer bar).
Figure 24. Air supply
pressure gage.
- Check all hosed for punctures, cuts,
breaks, holes, etc. Replace only with
factory authorized parts.
- Check air shut-off valve for proper
"on" position.
- Check that supply pressure on air gage
(0-160 psi) reads at least 80 - 90 psi
(Figure 24). If not, increase (decrease)
pressure by pulling primary air
regulator knob and turning clockwise
(counter-clockwise). Note - air
regulator is preset at the factory to
provide adequate pressure when
supply air pressure is over 80 psi.
Frequent adjustment of the primary air
regulator indicates supply air system
problems.
No screw in track.
- Check inside drum to assure adequate
supply of screw (minimum of 100).
- Be sure drum is turning (see above).
Figure 26.
Pump screwdriver manually to
engage air-screw ejector and clear
jammed screws at qualification
block.
- Pull drum face cover outwards and
check upper track (above the
qualifying block) for screw jam. Pump
driver jaw manually several times to
engage air ejector system and clear off
jammed screw (Figure 26). If jam still
exists, clear out manually with fingers
or narrow screwdriver tip or blade
between track members. NOTE - on
most models air ejectors engage only
when driver jaws are activated and
released. On units with axle cam
operated timers the drum must be
turning to activate blow-off, while
with solid-state electro-pneumatic
timers, the electric "on" switch must be
activated.
- Check screw size to assure that correct
screw were loaded in drum. Discard all
improperly sized screws or foreign
material.
- Allow at least 5-10 seconds for screws
to begin filling track after jam is
cleared. Let track fill completely
before beginning to drive screws.
Remember that, on most models, each
time the jaws are activated and
released, the upper tack area will be
cleared of screws by the ejector
system.
Figure 27.
Lift the stabilizer bar and check for free
movement of screws.
Screws stuck in track.
- CAUTION: KEEP FINGERS AWAY
FROM AIR CYLINDER AND
ESCAPEMENT WHEN AIR IS TURNED
ON OR DRIVER IS ENGAGED.
- Check track vibrator operation
(see above).
- Lift the stabilizer bar and check for free
screw movement (Figure 27). NOTE an oversized screw head or length may
cause sticking. Lower the stabilizer bar
and see if screw head contracts
underside of the stabilizer bar. If
clearance is inadequate, remove screw
and discard.
- NOTE: When replacing track, tilt
machine backwards to ensure that
screw initially lie flat.
- Activate driver manually through
several cycles. Proper clearance of the
stabilizer bar is attained when most
screws in the track "jump" after each
completed cycle. Increase track
clearance by turning set screw at free
end of the stabilizer bar 1/4 turn
clockwise (using a 3/32"hex key) until
"jump" occurs regularly (Figure 27).
Excessive clearance may also result in
screws sticking. Reduce clearance by
counter clock-wise turns of the set
screw.
- Periodically, clean the track, qualifing
block and the stabilizer bar of gummy
deposits and screw coating meterial by
wipping with a cloth dipped in CRC or
mineral spirits and wipe dry.
Escapement mechanism doesn’t
rotate.
- Lift the stabilizer bar and manually
push back all but first two screws.
Check for movement of second screw
away from escapement cylinder. If
stuck, TURN OFF AIR SUPPLY.
Remove second screw and activate
driver to feed first screw through air
tube. NOTE -air supply must be turned
back on to drive screw through tube
and to activate air and escapement
cylinders.
Figure 28. Check here for any
Blockage of cylinder
- Check to see if any screws or material
have fallen between the air cylinder
and the support strut (Figure 28).
- Turn air valve off and check for free
movement of cylinder and rotor.
Screws dropping into air feed tube,
but not received at driver jaw.
- Check supply air pressure for proper
range (80+ psi).
- Check to see if screws air in track,
moving property, and escapement
cylinder is functioning property (see
above).
- Check for any blockage in the screw
feed tube caused by someone of
something standing on the tube or
otherwise crimping the tube. Feed
tubes can be sensitive to drooping over
the edges of tables or tube clamps.
Keep tube bundle free from sharp
turns.
- Remove blockage and clear air feed
tube as follows:
- Loosen tube bundle cover (snakeskin)
by uncoiling coil wrap at either end of
the hose bundle (Figure 29). Push
snakeskin towards other end to loosen
and visually check for a jam of screws in
the feed tube. (NOTE - a screw with a
diameter head smaller than the screw for
which the machine was designed and
manufactured may not be blown through
the tube with a single blast of air and this
may contribute to a jam in the tube.)
Figure 30. Hold jaws on the sides and
pump manually.
Figure 31. Turn off air, hold driver
upside down, and jiggle
screwdriver to loosen jam.
- Manipulate any screws jammed in the
tube to loosen the blockage. Shake or tap
the tube to move the screw towards the
screwdriver and (on clamshell jaw
models) hold jaws open while pumping
jaws through several cycles (Figure 30).
A glance at the clear air tube will
indicate whether all screws stuck in the
tube have been removed. (on cantilever
spring models) turn supply air off by
sliding air valve downward. Hold
screwdriver horizontally with the air
feed tube underneath the screwdriver
and below the portion of the tube
containing the jam (Figure 31). Jiggle
screws in hose so that one screw at a
time falls into driver jaws. Eject each
screw individually until air feed tube is
clear.
- Check for screw or debris caught in
escapement housing by removing the
two 10-32 socket head cap screws on top
of escapement housing upper manifold
(Figure 32). Visually check and remove
any blockage. Activate jaws manually
for several cycles to ensure free
movement and replace cover.
Figure 32. Remove screw to check for
obstruction.
If, when the air supply is shut off at the
air shut-off valve, the air and
escapement cylinders don’t move
freely throughout their full range of
movement, check for bent air cylinder
piston rod and whether the coupling
hits the escapement housing (Figure
33). If the latter, loosen set screw in
coupling head with hex allen driver,
adjust position of coupling along
cylinder lever, and retighten set screw.
If air cylinder piston rod is bent,
replace
cylinder
with
factory
authorized part.
Turn Timing Valve which is located in
the chassis above a slot in the chassis
cover near the blow feed tube slot. The
knurled knob can be turn clockwise
(bottom of knob pulled towards you)
to increase the blow feed time;
counterclockwise to decrease the blow
feed time. Pull blow feed air supply
tube out of fitting on escapement after
depressing collar and see if the air
blast turns on and off when the driver
is activated. Open base of machine and
listen to the power valve for any
unusual noises, Replace power valve if
it fails to operate or leaks any air.
- If turning timing valve adjustment
screw 1/4 turn at a time doesn’t
change the duration of air blast
through tube, replace Nascologic
block by removing hoses on its
surface, unscrewing the base of the
screwfeeder and removing any
additional hoses.
- Reverse button at end of driver may be
depressed (Figure 35). Twist it until it
springs outward.
- Check for multiple screws in driver
jaws by pumping jaws manually
through several cycles (Figure 26).
- Check for stripped hole or improper
screw.
Figure 34. Location of timing valve.
Screw not driving in.
- Check air supply pressure and adjust
regulator if necessary (see set-up
procedures for adjusting air supply
pressure).
- Authorized personnel only may adjust
torque setting. On models with
external adjustment slot, use a #1
phillips screwdriver or key to adjust
torque.
Screw cross threaded in hole.
Figure 35. Check reverse button.
- Pull back on jaw yoke, or (on linearlock models, on egg shaped collar),
and twist clockwise to lock driving tip
in the exposed position. Hold reverse
button and push on screw to remove
(Figure 35). With driver motor still
turning, straighten screwdriver and
release reverse button. Screw will
automatically be driven in forwards.
Excessive oil at screwdriver.
- Using small flat screwdriver, turn
adjustment screw on lubricator
clockwise until oil just percolates in
clear plastic indicator on cap when the
driving cycle is actuated (Figure 37).
- Wipe off any excess oil from
screwdriver exhaust, and if necessary,
purge excess oil in air motor by
blowing clean air through tool.
Replace with new mufflers if they
become oil saturated.
Figure 37. Lubricator adjustment.
Screwdriver motor runs continuously
when screw is received at jaw.
- Tap screw against workstation surface
to engage head of screw in driver tip.
- Eject screw manually by pumping jaw
to remover faulty screw (burr on head,
out of tolerance head, misshapen head,
captivated washer hung-up on threads,
etc.).
- Shut off air by sliding air shut-off
valve. Turn screwdriver so that it is
horizontal and the screw feed tube is
down (Figure 38). Jiggle jaw forward
and backward while gently shaking or
tapping screwdriver. If multiple screws
appear in the hose, jiggle driver until
one screw at a time is in the jaw and
then manually eject screw. Repeat as
necessary. Turn on air supply and
pump driver once to get a new screw
delivered to the driving jaw.
Figure 38. Clearing multiple screw from
cantilever spring jaw.