Sterlco TG 1200 Series Thermoform Granulators - Manual (Page 26)

T-Series Thermoforming Granulators Troubleshooting 26 of 37
6-2 Electrical Faults
Problem Possible Cause Possible Remedy
Supply failure Check fuses
Starter inoperative Check main supply
Starter overloads or cuts out Check motor requirements
and adjust accordingly
Motor Fails to Start
Safety switches inoperative Check and adjust as needed
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
Motor starts but will not take
load
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