Frequently Asked Questions


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