Problem
Rapid Motor
Bearing Wear
Troubleshooting Guide — Fan Assembly
Problem
Short Belt Life
Belts turn over in
grooves
Belt Squeal
Belt Breakage
Excessive
Vibration
Belts mismatched
after service
MUA-SVX006B-EN
Probable
Solution
Cause
Bent motor shaft
Replace motor.
Excessive
Reduce belt tension.
overhung load due
to over-tensioned
belt
Probable
Solution
Cause
Spin burns from
Tension belt.
belt slippage
High ambient
Use Gripnotch belts.
temperature
Grease or oil on
Clean belts and pulleys.
belts
Worn pulleys
Replace pulleys.
Belt Misalignment
Realign drive.
Damaged belt
Replace belt.
Excessive vibration
Tension belts. Replace belts if damaged.
Worn pulleys
Replace pulleys.
Pulley
Realign drive.
Misalignment
Excessive load
High starting load. Retension drive.
Foreign material in
Provide drive guard.
drive
Belts damaged
Replace belts.
during installation
Extreme Overload
Eliminate overload.
Damaged belt cord
Replace belts.
section
Loose belts
Tension drive.
Belts improperly
Tension drive with slack of each belt on the
same side of drive.
tensioned
Belts improperly
Replace belts and tension drive with slack of
tensioned, causing
each belt on the same side of the drive.
more stretch of
some belts than
others
Old belts and new
Replace with new belts.
belts used on same
drive
Different brand
Replace with a set of machine-matched belts.
name belts used
on same drive
T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
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