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 | |
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| life is greater than 2 million, replace |
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| blades. |
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| 2) | Clean cams and lubricate | 2) | Make sure oiler is on knife. Instruct |
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| Operator to oil weekly. Make sure oil |
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| is available. |
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| 3) | Clutch worn out and can’t stay | 3) | Replace Clutch |
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| engaged |
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Slight Long and Short Tags | 1) Sticking Solenoid | 1) | Check gap on the trip arm to clutch body | |
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| must be about .040 inches. If too large, |
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| solenoid has less force. Check |
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| assembly of spring and washers. Use |
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| latest engineering assembly procedure. |
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| Clean Solenoid. |
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| 2) | Sticking Trip Arm to Clutch Roll | 2) | Check for burr on trip arm catching on |
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| Pin |
| clutch stop roll pin. File off burr on |
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| clutch roll pin and/or replace trip arm. |
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| 3) | Clutch has trouble picking up | 3) | Clean clutch and replace if not solved |
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Stock popping in front of knife | 1) Slow knife rotation | 1) Worn out blades create too much load | ||
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| for motor and knife slows down too |
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| much during cut. Replace Blades. |
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| 2) | Clutch has trouble engaging and | 2) | Clean clutch and replace if not solved. |
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| stock runs into blades |
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Knife does not cycle | 1) Solenoid not engaging | 1) | Trip knife solenoid by hand to see if | |
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| knife cycles. If cycles and cuts, check |
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| cable to solenoid, check solenoid |
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| adjustments and assembly, check gap |
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| and replace solenoid if necessary. |
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| 2) | Knife Motor Broken | 2) | Replace Knife Motor, good for 10 |
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| million labels by spec |
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| 3) | Clutch total failure | 3) | Unlikely, but change if necessary |
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| 4) | Solenoid Drive circuit failure | 4) | Replace Cable or TCB |
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| 5) | Knife motor not cycling | 5) | Replace Cable or TCB |
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Continuous Knife cycling | 1) Solenoid stuck in | 1) | Clean and adjust solenoid. | |
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| 2) | Circuit stuck on | 2) | Unplug solenoid wires from knife |
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| module connector and should stop |
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| cutting. If it does stop cutting, replace |
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| TCB. |
3)Very bad trip arm to stop pin on clutch
3)Unusual, but file roll pin and replace trip arm.
58 • Mechanical Trouble Shooting | Users Manual Model 656/636 |
