PROBLEM PROBABLE CAUSE
SOLUTION
TROUBLE SHOOTING GUIDES
VARIABLE SPEED DRIVES
Belts damaged during Replace belts
installation
Shock or extreme overload Eliminate overload cause or redesign drive.
Belt Stretch Beyond Worn sheaves Replace Sheaves
Take-up
Under designed drive Redesign and replace drive
Take-up slippage Reposition take-up
Drive excessively tensioned Properly tension drive
Damaged cord section Replace belts and properly install
during installation
Excessive Vibration Damaged belt cord section Replace belts
Loose belts Tension drive
Belts improperly tensioned Tension drive with slack of each belt on the same
side of the drive
Belts too Long at Insufficient take-up Use shorter belts
Installation
Drive improperly set up Recheck driver and driven machine set up
Wrong size belts Use correct size belts
Belts too Short at Insufficient take-up Use longer belts
Installation
Drive improperly set up Recheck driver and driven machine set up
Wrong size belts Use correct size belts
Belts Mismatched at Belts matched by code Replace belts with Machine Matched Belts
Installation number only
Belts Mismatched at Old belts and new belts used Replace with new belts
Installation together on the same drive
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