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Problem:
Carcass fatigue at idler junction
Cause:
Improper transition between troughed belt and terminal pulleys
Solutions:
Adjust transition in accordance with Continental ContiTech Handbook of Conveyor and
Elevator Belting
Cause:
Severe convex (hump) vertical curve
Solutions:
Decrease idler spacing in curve; increase curve radius
Cause:
Excessive forward tilt of troughed rolls
Solutions:
Reduce forward tilt of idlers to no more than 2 degrees from vertical
Cause:
Excessive gap between idler rolls
Solutions:
Replace idlers; replace with heavier belt
Cause:
Insufficient transverse stiffness
Solutions:
Replace with the proper belt
Cause:
Excess gap between idlers, causing load to work and shuffle on the belt as it passes over idlers
Solutions:
Increase tension if unnecessarily low; reduce idler spacing
Problem:
Cover blisters or sandblisters
Cause:
Cover cuts or very small cover punctures allow fines to work under the cover and propagate
between the cover and carcass
Solutions:
Make a vulcanized spot repair or a self-curing repair
Cause:
Spilled oil or grease, over lubrication of idlers
Solutions:
Improve housekeeping; reduce quantity of grease used; check grease seals
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Installation, Maintenance & Troubleshooting Guide
Troubleshooting