Knife - Paxar 656 / 636 User Manual

Knife

Problem
Double Cuts, extra knife cycle
Skips cut, double length label
Noisy Rattle when not cutting but
motor turning
Users Manual Model 656/636
Probable Cause
1) Solenoid sticking in
2) Worn Trip Arm on Clutch
actuator.
3) Worn Stop roll pin on clutch
1) Solenoid did not pull in
2) Trip arm sticking on clutch roll
pin.
3) Low voltage to solenoid
4) Weak solenoid driver
5) Bad Solenoid
1) Packman not visibly homing
2) Packman homing ok but noisy.
3) Dirty Clutch
4) Packman slipping
5) Bad Motor Gear Box
Corrective Action
1) Check proper assembly of washers.
Clean plunger with alcohol and
completely dry.
2) Replace Actuator
3) Replace Clutch if not solved above.
1) Check gap on the trip arm to clutch body
must be about .040 inches. If too large,
solenoid has less force. Check
assembly of spring and washers. Use
latest engineering assembly procedure.
Clean Solenoid.
2) Check for burr on trip arm catching on
clutch stop roll pin. File off burr on
clutch roll pin and/or replace trip arm.
3) Check power supply voltage for 12 and
24 volts
4) Substitute TCB. Change back if not
solved.
5) Unusual, but replace Solenoid and
adjust.
1) Adjust Packman to center the home
location of the packman to the quiet
location. If the knife still does not
home, clean knife cams and lubricate.
If still does not home, replace blades. If
still does not home, replace clutch.
2) Adjust Packman to center the home
location of the packman to the quiet
location .
3) Clean clutch and one drop of light oil.
4) Order improved set screws with multiple
points that bite better to shaft.
5) Replace Knife Motor
Mechanical Trouble Shooting • 57