Page 32 - 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:
Tension too high
SOLUTIONS:
Increase belt speed, same tonnage; reduce tonnage, maintain same belt speed; reduce friction with better
maintenance and replacement of damaged idlers; decrease tension by increasing arc of contact or go to
lagged pulley; reduce the counterweight to minimum amount
CAUSE:
Material trapped between belt and pulley
SOLUTIONS:
Install plows or scrapers on return run ahead of the tail pulley
CAUSE:
Improper transition between troughed belt and terminal pulleys
SOLUTIONS:
Adjust transition in accordance with Goodyear Engineered Products recommendations
PROBLEM: Excessive edge wear, broken edges
CAUSE:
Off-center loading or poor loading
SOLUTIONS:
Adjust chute to place the load on the center of the belt; discharge material in direction of belt travel at or
near belt speed
CAUSE:
Material spillage and buildup
SOLUTIONS:
Improve loading and transfer conditions; install cleaning devices; improve maintenance
CAUSE:
Belt hitting structure
SOLUTIONS:
Install training idlers on carry and return run
CAUSE:
Bowed belt
SOLUTIONS:
For a new belt, this condition should disappear during break-in; in rare instances, the belt must be straightened
or replaced; check storage and handling of belt rolls
PROBLEM: Transverse breaks at belt edge
CAUSE:
Belt edges folding up on structure
SOLUTIONS:
Install limit switches; provide more clearance
CAUSE:
Improper transition between troughed belt and terminal pulleys
SOLUTIONS:
Adjust transitions in accordance with Goodyear Engineered Products’ Handbook
CAUSE:
Severe convex (hump) vertical curve
SOLUTIONS:
Decrease idler spacing in vertical curve; increase curve radius; consult Goodyear Engineered Products for
assistance
PROBLEM: Short breaks in carcass parallel to belt edge, star breaks in carcass
CAUSE:
Impact of material on the belt
SOLUTIONS:
Reduce impact by reducing the chute design; install impact idlers
CAUSE:
Material trapped between belt and pulley
SOLUTIONS:
Install plows or scrapers on return run ahead of tail pulley