Page 18 - Conveyor_Belting_Cat

TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
1. Fastener fails Improper fastener or technique Check with fastener manufacturer comparing
tension, overall belt gauge, pulley size.
Recalculate tension requirement.
2. Belt stretching Underbelted Recalculate tension requirement. Double-check
peak loads.
3. Belt shrinking Water absorption Cotton belting shrinks when water-saturated.
Heat memory of synthetic fabrics All synthetic belting tends to show this characteristic.
Check maximum temperature especially in cleaning
and periodically adjust take-up.
Mechanical malfunction Improper alignment of pulleys or conveyor frame.
Crooked splice Resplice. If mechanical splice, be sure ends
are cut square.
Off-center loading Adjust loading conditions to permit center load.
5. Edge fraying Material build-up Redesign or adjust loading, scraper, plows and/or
and wearing cleaning mechanisms.
Underbelted Recalculate tension requirement.
Fabric instability Consider improved fabric.
7. Belt slipping Insufficient slack-side tension Adjust take-up toward maximum stop and/or
shorten belt.
Underbelted Recalculate tension.
Pulleys too small Recalculate tension and check minimum pulley
requirements.
Ozone cracking Check compound resistance.
Heat; extreme cold Check compound resistance and system design.
Underbelted Recalculate tension.
Slipping on drive pulley Adjust take-up to maximum stop.
Undersized pulley(s) Check all pulley sizes – especially snub or reverse
bend pulleys.
10.Belt fasteners Fasteners too large Follow fastener manufacturer’s recommendations
pull out based on belt thickness.
Undersized pulleys Use larger pulleys or thinner belts with strong
synthetic fabrics.
Belt too tight Check tension. Consider vulcanized splice.
11. Excessive top Skirt board/plow contact or Adjust or redesign.
cover wear material buildup
Frozen return idlers or material Replace of free idlers or check cleaning devices
buildup on return side or procedures.
Improper compound Check with supplier.
4. Belt not
training
properly
6. Belt becoming
too narrow
8. Belt cracking
across top
of belt
9. Belt cracking
across bottom
of belt
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