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The belt is rubbing against a frame
component.
The belt is rubbing against a
seized conveying roller or
pressure roller
Belt dust
Excessive skew on tracking rollers
generation
The belt is slipping on the drive
pulley
The belt is rubbing against a frame
Belt edge wear
component.
Melted or
severely worn
The belt is slipping on the drive
spots on the
pulley
belt facing
The bed sections are not square.
The tail pulleys are not square to
Belt tracks off
the frame.
The take-up pulley is not square.
Check the orientation of the drive
section. This is a common issue if
the drive section is installed
backwards and run in reverse.
Too many tracking elements
fighting each other (usually the
Belt is difficult
result of making too many
to track
changes at once)
Belt splice is not straight
Belt is cut crooked (this is very
rare)
Published November 2021
Installation and Maintenance Manual: RZPAC
Re-track and re-tension the belt.
Replace damaged rollers.
Re-square bed frame. Ensure tracking rollers are not
"fighting" each other.
Re-tension the belt.
Clean the belt and drive pulley if severe contamination
is observed.
Remove any overloads that may be present.
Re-track and re-tension the belt. Remove any trailing
fibers from the edge of the belt. Check and repair any
damage to the belt splice.
If the belt is less than 3" wide: Schedule belt
replacement. Fix the tracking problems before belt
replacement so as to avoid damage to the new belt.
Re-tension the belt. Replace if needed.
Clean the belt and drive pulley if severe contamination
is observed.
For belts with traction layer on one side only, ensure
the traction layer (shiny side) is facing the conveying
rollers
Remove any overloads that may be present.
Adjust the bed sections for squareness and
straightness.
Adjust the tail pulleys.
Adjust the take-up pulley. Ensure the belt tension is still
appropriate for application.
Install the drive section in the correct orientation per
the system layout drawings. The tight span of the belt
(at the conveyor's infeed) should always touch the
drive pulley first.
Start over with belt tracking. Set everything square,
recheck square/level/straightness of all sections, and
begin again, making single adjustments in small
increments and waiting for the changes to take effect
before proceeding.
Re-splice belt with a straightness of 1/4" per 10ft or
better
Remove belt from the conveyor, spin it 180°, and re-
install it without making any other changes. If the belt
tracks off to the other direction, the belt is defective.
Rev. B
64
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