Page 28 - ConveyorBeltMaintenanceManual2010

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INSTALLATION, MAINTENANCE & TROUBLESHOOTING GUIDE
T R O U B L E S H O O T I N G
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 centerline 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 centerline 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