Conveyor System

Troubleshooting your Conveyor Systems

Reprinted Courtesy of NIBA

Problem: Tracking or training

Cause: Mechanical malfunction

Solution: Proper alignment of pulleys on conveyor frame.

Cause: Crooked splice

Solution: Square belt end, repair splice.

Cause: Crooked belt

Solution: Replacement may be required.

Cause: Material build-up on pulleys

Solution: Recommend routine maintenance or mechanical cleaning devices.

Cause: Off-center loading

Solution: Change feeder design or replace belt with more bulk. Check belt manufacturer's specs.

Cause: Excessive pulley crown

Solution:Refer to CEMA Standard 402-1964 or check with technical of belt manufacturer.

Cause: Distorted belt due to run off or accidental damage

Solution: Replacement of belt indicated

Problem: Crooked (new) belt

Cause: Uneven moisture absorption of cotton fabric

Solution: Check with source for reconditioning and consider replacement with polyester or nylon fabrics.

Cause: Crooked cut or warp not in line with belt travel

Solution:If belt will not run straight under tension, a replacement may be necessary. (Normally, if the fill yarn is not perpendicular to the line of travel, it will not affect ability to track the belt.

Problem: Wear - Excessive on top cover

Cause: Plows or skirt boards in contact with belt surface.

Solution: Adjust or redesign

Cause: Belt wiper or doctor blade in contact with belt surface

Solution: Frequent maintenance required for maximum belt life. Never use old conveyor belt as wiper.

Cause: Frozen return idlers or material build-up on return idlers

Solution: Free or replace. Frequent maintenance required.

Cause: Improper compound

Solution: Recheck environmental conditions and check with technical or belt manufacturer.

Problem: Wearing or fraying of belt edge

Cause: Improper tracking or training

Solution: Refer to "Tracking or training."

Cause: Material build-up

Solution: Redesign or adjust loading conditions, scraper, plows and/or cleaning mechanisms.

Cause: Side loading

Solution: V-guide may be required or change direction of loading.

Cause: Material build-up on idlers or pulleys

Solution: Realign system, stiffer belt required or consider V-guide design or guide rollers.

Problem: Wear bottom cover

Cause: Rough or worn slider bed surface or pulleys

Solution: Replace worn surfaces or clean through routine maintenance procedures.

Cause: Belt slipping on drive pulleys

Solution: Increase take-up adjustment. Increase belt wrap on drive, lag drive.

Cause: Frozen idlers or pulleys

Solution: Free or replace

Cause: Material build-up on idlers or pulleys

Solution: Keep clean through routine maintenance or mechanical devices.

Problem: Fastener failures

Cause: Under belted

Solution: Recalculate tension requirement. Change belt recommendation or drive design.

Cause: Undersized pulleys

Solution: Replace pulleys or change belting recommendation

Cause: Improper fastener or application procedures

Solution: Check overall gauge of belt and system pulley sizes with fastener manufacturer's recommendations.

Cause: Conditions too severe for mechanical lacing

Solution: Consider vulcanized splice, or change in drive or loading design.




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