TROUBLESHOOTING
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| SECTION | |
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| Processing Faults | |
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PROBLEM |
| PROBABLE CAUSE |
| REMEDY | |
Processing Faults |
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A. Material building up below | 1. Pneumatic discharge blower | 1. | Start the blower |
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screen | not running |
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| 2. | Damper on discharge | 2. | Adjust the damper (on |
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| blower not open enough | opposite side of machine from |
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| blower) |
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| 3. | Damper line is blocked | 3. Open line and remove block |
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B. Stalling | 1. Overfeeding | 1. | Reduce feed rate | ||
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| 2. | Partial or complete screen | 2. | Remove screen, clear and | |
| blockage | inspect for damage |
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| 3. | Insufficient tension on V- | 3. | Check belt tension and |
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| belt drive, slippage and | adjust as required |
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| burning |
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| 4. | Badly blunted or damaged | 4. | Install |
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| knives | knives as required |
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| 5. | Knife gap setting is too | 5. | Check knife gap clearances |
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| wide |
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| 6. | Installation fault, motor is | 6. | Check direction arrow and |
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| running in reverse direction | reset electrical connections to |
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| correct rotational direction |
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| 7. | Safety interlock is | 7. | Tighten safety interlock |
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| inoperative | actuator screw |
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C. Material overheating | 1. Check items 1, 2, 4, 5 and 6 | 1. | Follow remedies listed for |
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| under “Stalling” | each item |
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| 2. | Screen size is too small | 2. | Increase the screen size |
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| 3. | When feeding the material, | 3. | Check bed knife projection | |
| bed knife shield on rotor down | beyond shield. Set it to |
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| stroke is incorrectly set | (0.80 mm) for film and 1/16” |
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| (1.6 mm) or thicker materials |
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| 4. | When granulating rubber, | 4. | Increase talc percentage rate |
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| insufficient talc, causing | of feed |
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| freshly cut surfaces to re- |
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| adhere |
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| 5. | Blockage in pneumatic | 5. | Check direction of blower |
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| discharge line | rotation. Check venturi and |
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| line/or transition piece for |
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| blockage |
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