UnionSpecial PL 1096 User manual

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FINEST
QUA LilY
63900 AM Z-900 /
WS4 2800 LAH -1
PL 1096
INDUSTRI A L
SEWING
MACHINE$
6J
r
A D J U S T I N G I N S T R U C T I 0 N S
AND
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LIST OF PARTS
From the library of: Superior Sewing Machine & Supply LLC

' Trimmer Adjustment
loosen knife screw (A) and slide upper
knife left or right until a dimension
of 3 1 3/6~
11
is obtained from right edge
of throa tplate to point of upper knife
as st-:c .. 1 in fig. 1. Tighten knife screw.
Install knife assembly on machine center-
ing needle in throatplate hole and tight-
en the two throatplate screws. Make
sure the positioning finger (C) fits
into the positioning notch in the hook
basket. Now loosen screw (B) and slide
positioning finger forward or backward
until a dimension of 1/32
11
is obtained
between positioning finger and basket.
Tighten screw.
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A
FIG. 2
1J"
36'+---
0
FIG . 1
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Synchronizer Adjustment
1. Rotate handwheel in counterclockwise
direction until needle bar is at the bot-
tom of its stroke. Remove synchronizer
protective cover (A) and loosen set screw
(B , by approximately one half turn.
Ro t ate notch disc (C) until the opening
of the notch is centered over the shutter
opening (Fig. 4). Tighten set screw.
2. Now rotate handwheel until take-up
is on its up stroke and is approxlmatley
1/8 inch from the top of its stroke.
Loosen set screw (B) and turn tab disc
(D) until the tab is centered over the
shutter opening (Fig. 4) while using
caution not to change the setting of
notch disc. Tighten set screw.
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FIG. 3
r S~TTER
I
rSH U TTER OPEfJING
~f\JOTCHEO DISC
'
(SHUTTER
/ sHuTTeR OPeNING
.
~
TAB DISC
I
FIG. 4
From the library of: Superior Sewing Machine & Supply LLC

Synchronizer Adjustments
3. Turn handwheel in
operating direction
u til take-up lever is nearly at the bot-
tom of its stroke (Fig. 5) and the screw
A
(Fig. 6) in hook retainer is at top.
loosen set screw and turn tab disc E
(Fig. 3) until tab is centered over
shutter opening. Tighten set screw.
4. Turn on machine power. To check
needle down position, toe treadle and
release. Needle should stop at bottom
of stroke. Now heel back on treadle.
Trimmer should fire and take-up lever
should stop 1/8 inch from the top of its
stroke. If either of these settings are
not correct go back to step 1 and re-
check synchronizer adjustments.
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FIG. 5
,. -
FIG. 6
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BooM Ouick Speed Setting
1. Adjusting medium speeds or 'ramping'.
a. Turn potentiometer PJ on Quick motor control box all the
way counterclockwise (10 turn pot) to obtain the maximum
acceleration.
2. Adjusting high speed.
a. Turn on machine power and connect air.
b. Press treadle all the way down (forward).
c. Turn potentiometer P2 until a handwheel speed of 52 00 r pn
is obtained.
3. Adjusting slow (positioning) speed.
a. Remove synchronizer protective cover and block photocell
(see diagram) by inserting a small strip of paper into
slot at top of synchronizer.
b. Press treadle forward and release. Motor should continue
cycling at positioning speed.
c. Turn potentiometer Pl until a handwheel speed of 195 rpm
is obtained.
d. Remove strip of paper to stop machine and replace protective
cover.
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From the library of: Superior Sewing Machine & Supply LLC

SERVICING INSTRUCTIONS 880M
Assembly/Disassembly for Inspection or Replacement:
1. Remove V belt and guard.
2. Disconnect cables which attach clutch housing to control box.
3. Remove the three screws located approximately 120° apart. When re-
moving last screw, place hand under clutch / brake housin g so that
unit will not fall.
4. Keep clutch/brake housing tilted sli gh ': ly d· Jwllv.·a:-.:: (p ul ley si de do v.'Tl)
to keep the clutch/brake disc in pla ce.
5. Place the clutch/brake housing, pulley side facing upward, on a clean
flat surface. Separate the clutch solenoid from the end bell. Note:
Use caution during disassembly and reassembly to ensure alignment and
inserting of the solenoid electrical connection pins into the mating
socket of the end bell. Slide the clutch and brake discs of the splined
shaft of the end bell. Put the end bell aside and inspect the clutch/
brake discs for wear. If cork surfaces are smooth and if cork on
clutch disc projects beyond the outer metal rim, discs are okay.
6. Clean the surfaces of the face plates with an oiled rag. These
surfaces should be smooth. If you find nicks and gouges on them,
replace the plates.
7. Thoroughly clean the cork faces of the clutch/brake discs using a clean,
dry rag. Apply grease (Quick No. 051.011) in 3-one inch segments every
120°. Spread the grease evenly over the entire cork surfaces.
8. Apply a small amount of grease to the brass splines on which the
clutch/brake discs move. This will assure proper action.
9. Reassemble the clutch/brake discs making sure the rubber "O" rings
(part No. 408.009) and the stop washer (part No. 250.008) are in good
condition. To assure proper operation of the cooling system, make
certain that the vent holes are lined up.
10. Reinstall the clutch/brake discs and housing by reversing the pro-
cedures outlined in sections 3., 2., and 1.
11. Once reinstallation is completed, check the clutch/brake clearance
as outlined
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ADJUSTING THE CLUTCH/BRAKE CLEARANCE
1. Remove fan cover (1) by turning counterclockwise.
2. Insert adjusting tool (4) into the bores on fan (2). Exert pressure
on adjusting tool and turn fan until the tool locks into the bores
of adjusting screw (3).
3. With tool locked in place, turn fan (2) clockwise until pulley (6)
has a moderate drag when rotated with the other hand.
4. Rotate adjusting tool (4) and fan (2) 120° counterclockwise
(120° is the distance between cap nuts [5] on the end bell. Re-
quired clutch clearance .5 mm).
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From the library of: Superior Sewing Machine & Supply LLC

Lubrication
To prolong cork facing life and increase smoothness of operation, the
following lubrication should be performed annually:
1. Disassemble clutch/brake assembly
as described on the reverse side.
2. Remove clutch and brake discs.
3. Clean cork surfaces of the discs
and the metal facings of the
flywheel and brake surfaces '..'ith
a clean, lint-free cloth. Note:
Mineral spirits solvent or carbon
tetrachloride can be used on
METAL SURFACES ONLY to speed up
cleaning.
4. Apply 3 segments of Quick grease
(Part No. 051.011) about one
inch long, as shown in the illus-
tration, to the cork surfaces.
Grease
5. Spread grease evenly on both cork surfaces.
6. Install on splined shaft AFTER lightly coating the splines with the
special grease.
7. Reassemble to motor and check for clearance (see above).
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From the library of: Superior Sewing Machine & Supply LLC

REMOVAL OF PRINTED CIRCUIT BOARD (PCB)
1. Turn ma c hine main power off.
2. Unscrew the 4 screws in the co rners of the motor control box cover.
3. Unplug flat ribbon cable fr on PCB,
4. Unscrew the 2 screws on th e PC B and remove board as shown.
5. Re
in se rt PCB and ti ghten with t he 2 s crews.
6. Connec t flat rib bon cable .
7. Install cover using the 4 screws.
8. Turn power on and check the functions. Adjust speeds if necessary.
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ELECTRICAL
The terminal strip of the motor is designed to accommodate either the star
connection for 380 volts A.C. or Delta connection for 220 volts A.C.,
three-phase. Details of both connections are illustrated in the wiring
diagram below.
Terminal Box
WIRING DIAGRAM
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From the library of: Superior Sewing Machine & Supply LLC