Paxar 656 / 636 - Manual (Page 60)

54 • Mechanical Trouble Shooting Users Manual Model 656/636
Problem Probable Cause Corrective Action
Cracks or craze marks appear on face
of finished labels.
1) Incorrect adjustment of decurler. 1) Move decurler turn-bar toward
unwind end of machine until
cracks no longer appear.
NOTE: Stock-out switch rod may
have to be readjusted after moving
decurler.
Stock jams in bridge blade rollers or
knife area.
1) Knife mounted bridge blade too
close to stationary bridge blade.
1) Loosen screws in upper knife
securing bridge blade roller
assembly and slide up (holes in
blade are slotted) until rollers just
contact stock. Tighten screws.
2) Knife not cutting full width of
stock.
2) Loosen knife shear adjustment
screws and move outer end of
knife until full cut is accomplished.
3) Stacker not operating or nip rollers
not turning.
3) Check stacker connection to
access port. Be sure nip roller is
free to rotate and moves easily in
the bearing slots.
Will not stack. 1) Stacker not operating. 1) See step 3 above.
2) Stacker position on machine too
far forward so labels go under rear
stacker rail.
2) Loosen stacker mounting knob
and move stacker toward rear of
machine - tighten.
3) Incorrect rail position or stacker
bed angle.
3) Using a cut label, position stacker
rails so that approximately 3/8"
(9.5mm) overhangs the second
grooved roller. Loosen quick-turn
handle on stacker clamp and raise
or lower stacker bed until opening
between 1st label overhang and
belt surface will allow entry of
next label.
Knife will not cut or partial cut 1) Incorrect pre-load on clutch pawl. 1) With back cover removed and
power off - operate solenoid by
hand. When lever is moved, clutch
pawl should move counter-
clockwise about 1/32" (0.79mm)
with the "pac-man" in home
position. If not - loosen "pac-man"
set screws and readjust "pac-man"
to stop with spring in detent.
2) Partial cut 2) Loosen shear adjustment screws
and move outer end of knife until
full cut is obtained.