Avery Dennison 676 - Manual (Page 62)

62 • •• • Mechanical Trouble Shooting
Problem Probable Cause Corrective Action
Knife stops during cut in
stock
1) Check life of blades 1) If warn and dull, may stall in stock. If life is
greater than 2 million, replace blades.
2) Clean cams and lubricate 2) Make sure oiler is on knife. Instruct Operator to
oil weekly. Make sure oil is available.
3) Clutch worn out and can’t stay
engaged
3) Replace Clutch
Slight Long and Short Tags 1) Sticking Solenoid 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) Sticking Trip Arm to Clutch Roll
Pin
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) Clutch has trouble picking up 3) Clean clutch and replace if not solved
Stock popping in front of
knife
1) Slow knife rotation 1) Worn out blades create too much load for motor
and knife slows down too much during cut.
Replace Blades.
2) Clutch has trouble engaging and
stock runs into blades
2) Clean clutch and replace if not solved.
Knife does not cycle 1) Solenoid not engaging 1) Trip knife solenoid by hand to see if knife
cycles. If cycles and cuts, check cable to
solenoid, check solenoid adjustments and
assembly, check gap and replace solenoid if
necessary.
2) Knife Motor Broken 2) Replace Knife Motor, good for 10 million labels
by spec
3) Clutch total failure 3) Unlikely, but change if necessary
4) Solenoid Drive circuit failure 4) Replace Cable or TCB
5) Knife motor not cycling 5) Replace Cable or TCB
Continuous Knife cycling 1) Solenoid stuck in 1) Clean and adjust solenoid.
2) Circuit stuck on 2) Unplug solenoid wires from knife module
connector and should stop cutting. If it does
stop cutting, replace TCB.
3) Very bad trip arm to stop pin on
clutch
3) Unusual, but file roll pin and replace trip arm.