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Cause:
Idler stands not centered on belt
Solutions:
Readjust idlers in affected area
Problem:
Belt runs off at the tail pulley
Cause:
Belt running off-center around the tail pulley and through the loading area
Solutions:
Install training idlers on the return side prior to the tail pulley
Cause:
Material spillage and buildup
Solutions:
Improve loading and transfer conditions; install cleaning devices; improve maintenance
Cause:
Idlers or pulleys out-of-square with center line of the belt
Solutions:
Readjust idlers in the affected area
Problem:
Belt runs off at the head pulley
Cause:
Pulley lagging worn
Solutions:
Replace the pulley lagging
Cause:
Material spillage and buildup
Solutions:
Improve loading and transfer conditions; install cleaning devices; improve maintenance
Cause:
Idlers or pulleys out-of-square with center line of the belt
Solutions:
Readjust idlers in the affected area
Cause:
Idler stands not centered on the belt;
Solutions:
Readjust the idlers in the affected area
Problem:
Belt slip
Cause:
Insufficient traction between the belt and pulley:
Solutions:
Lag the drive pulley; increase the belt wrap; install belt-cleaning devices
Cause:
Pulley lagging worn
Solutions:
Replace the pulley lagging
Cause:
Counterweight too light
Solutions:
Add counterweight or increase the screw take-up tension to value determined from calculations
Cause:
Material spillage and buildup
Solutions:
Improve loading and transfer conditions
Cause:
Sticking idlers
Solutions:
Free idlers and improve maintenance and lubrication
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Installation, Maintenance & Troubleshooting Guide
Troubleshooting