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Problem:
Excessive top cover wear, uniform around the belt
Cause:
Dirty, stuck or misaligned return rolls
Solutions:
Remove accumulation; install cleaning devices; use self-cleaning return rolls; improve maintenance
and lubrication
Cause:
Cover quality too low
Solutions:
Replace with a belt of heavier-cover gauge or higher-quality rubber
Cause:
Material spillage or buildup
Solutions:
Improve loading and transfer conditions; install cleaning devices; improve maintenance
Cause:
Off-center loading or poor loading
Solutions:
Adjust the chute to place the load on the center of the belt; discharge material in the direction of belt
travel at or near the belt speed
Cause:
Excessive sag between idlers causing the load to work and shuffle on the belt as it passes over idlers
Solutions:
Increase tension if unnecessarily low; reduce idler spacing
Problem:
Severe pulley cover wear
Cause:
Sticking idlers
Solutions:
Free idlers; improve maintenance and lubrication
Cause:
Slippage on the drive pulley
Solutions:
Increase tension through screw take-up or add counterweight; lag the drive pulley; increase arc of contact
Cause:
Material spillage and buildup
Solutions:
Improve loading and transfer conditions; install cleaning devices; improve maintenance
Cause:
Material trapped between the belt and pulley
Solutions:
Install plows or scraper on return run ahead of tail pulley
Cause:
Bolt heads protruding above lagging
Solutions:
Tighten bolts; replace lagging; use vulcanized on lagging
Cause:
Excessive forward tilt of trough rolls
Solutions:
Reduce forward tilt of idlers no more than 2 degrees from vertical
Problem:
Longitudinal grooving or cracking of bottom cover
Cause:
Sticking idlers
Solutions:
Free idlers and improve maintenance and lubrication
Cause:
Slippage on the drive pulley
Solutions:
Increase tension through screw take-up or add counterweight; lag the drive pulley; increase arc of contact
Cause:
Material spillage and buildup
Solutions:
Improve loading and transfer conditions; install cleaning devices; improve maintenance
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Installation, Maintenance & Troubleshooting Guide
Troubleshooting