Conveyor Fault — Belt Tracking / Misalignment
What This Fault Means
A belt tracking fault means the belt has moved laterally off-center, triggering a misalignment switch or sensor. If uncorrected, the belt edge can damage the frame, spill material, or derail completely.
Common Causes
- Uneven loading (material not centered on the belt)
- Misaligned idler rollers or return rollers
- Splice not square to the belt direction of travel
- Seized or stuck roller causing the belt to walk
- Frame or structure not level
Recommended Fix
- Check where the belt is tracking off — observe from the tail to the head.
- Adjust the idler closest to where mistracking starts: pivot the upstream end of the idler toward the direction the belt is running off.
- Verify the material is loading centered on the belt — adjust the chute or skirtboard.
- Check for seized rollers and replace them.
- Verify the conveyor frame is level and square using a string line.
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