Owner manual

Page 41 of 48
7-5-3 Electrical Faults
Problem Probable Cause Possible Remedy
Power supply failure Check fuses.
Starts inoperative Check Main Supply. Check
starter contacts for burning and
replace if necessary.
Starter overloads cut 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
loads
Defective starter winding Check current in each phase with
an Ammeter. If there is a marked
difference in current in any one
phase, contact the motor’s
manufacturer.
Motor will start when
disconnected from load but not
when connected
Worn bearings Check and replace if necessary,
in accordance with
Manufacturer’s literature.