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1400 Series Granulators Chapter 6: Troubleshooting 29 of 43
6-2 Electrical Faults
Problem
Possible Cause
Possible Remedy
Motor Fails to Start
Supply failure
Check fuses
Starter inoperative
Check main supply
Starter overloads or cuts out
Check motor requirements
and adjust accordingly
Safety switches inoperative
Check and adjust as needed
Motor starts but will not take
load
Too much belt tension
Check belt tension and adjust
as necessary
Incorrectly connected motor
Check terminal connection
with manufacturer’s
connection diagram and
adjust as necessary
Defective starter winding
Check current in each phase
with ammeter, if there is a
marked difference in current
in one phase, contact motor
manufacturer
Motor will start when
disconnected from load but
not when connected
Worn bearings
Check and replace if
necessary according to
manufacturer’s literature