COMMON GRANULATOR PROBLEMS |
SYMPTOM | POSSIBLE PROBLEM | CORRECTIVE ACTION |
| | |
Poor quality regrind - high % of fines | Dull Knives | Sharpen or replace with new |
Increased vibration | Knives not properly gapped | Re-gap knives |
Increased noise | Plugged screen | Clean screen |
| Rotor speed is to high | Change pulleys and/or motor |
| | |
Reduced throughput | Dull knives | Sharpen or replace with new |
| Knives not properly gapped | Re-gap knives |
| Plugged screen | Clean screen |
| Rotor speed is too high | Change pulleys and/or motor |
| | |
Rotor stalls | Dull knives | Sharpen or replace with new |
| Knives not properly gapped | Re-gap knives |
| Plugged screen | Clean screen |
| Overloading the machine | Reduce the feed rate |
| Loose or worn belts | Tighten or replace |
| | |
Motor will not start | Safety limit switch open | Check all limit switches |
| Blown fuse or breaker | Replace or reset |
| | |
Regrind collection bin overfill | No high level indicator | Install |
| High level indicator broken | Replace |
| Vacuum line plugged | Check vacuum evacuation system |
| | |
