Conveyor Belt Tracking Motor Amp Draw Audit Checklist
A structured daily log for inspecting conveyor belt tracking alignment, measuring motor amp draw on each phase, verifying belt tension, and checking pulley/idler condition against manufacturer tolerances. Critical for preventing unplanned downtime, belt edge damage, and motor overloading.
This audit checklist is used to perform a daily inspection of conveyor belt tracking and motor amp draw. Consistently high or imbalanced amp readings indicate mechanical drag, misalignment, or belt tension issues that can cause premature motor failure. By tracking belt deviation, phase current, and pulley condition in a single log, maintenance teams can trend degradation, schedule proactive corrections, and reduce unplanned stoppages on the production line.
- Lockout/tagout the conveyor drive before opening any guards or accessing moving parts. Verify zero energy state with a qualified electrician.
- Wear safety glasses, steel-toed boots, and close-fitting clothing. Remove rings, watches, and loose jewellery near rotating components.
- Clamp-on ammeter (true RMS, rated for motor inrush), belt tracking straightedge, tension gauge or tape measure, and thermal imager (recommended).
- Only authorised maintenance personnel shall perform this audit. A second qualified person must verify LOTO before any hands-on work begins.
Inspection / Audit Matrix
| Status (P/F) | Inspection Item / Task | Tolerance / Threshold | Actual Reading |
|---|---|---|---|
| [ ] Pass [ ] Fail | Belt tracking alignment — distance from belt edge to centre of head pulley | Max ±6 mm from centreline on loaded side | __________ mm |
| [ ] Pass [ ] Fail | Motor amp draw — Phase L1 (full load amps reference) | ≤ 95 % of nameplate FLA (if FLA = 12.5 A, max = 11.9 A) | __________ A |
| [ ] Pass [ ] Fail | Motor amp draw — Phase L2 (full load amps reference) | ≤ 95 % of nameplate FLA; imbalance ≤ 5 % between phases | __________ A |
| [ ] Pass [ ] Fail | Motor amp draw — Phase L3 (full load amps reference) | ≤ 95 % of nameplate FLA; imbalance ≤ 5 % between phases | __________ A |
| [ ] Pass [ ] Fail | Belt tension — deflection at mid-span between idlers (measured at 10 kg force) | 12 – 18 mm deflection per manufacturer spec | __________ mm |
| [ ] Pass [ ] Fail | Head pulley & snub pulley — surface condition, no rubber buildup or gouges | No visible damage, lagging thickness ≥ 3 mm | ☐ OK ☐ Needs repair |
| [ ] Pass [ ] Fail | Carrying idlers — free rotation, no flat spots, no material buildup | All idlers spin freely by hand; buildup < 2 mm | ☐ OK ☐ Needs cleaning |
| [ ] Pass [ ] Fail | Return side idlers — free rotation, no seized rollers | All return idlers spin freely; no flat spots | ☐ OK ☐ Needs replacement |
| [ ] Pass [ ] Fail | Belt surface — no cuts, tears, or exposed carcass along entire visible length | No tears > 25 mm or exposed fabric/steel cords | ☐ OK ☐ Needs splice repair |
Defect / Corrective Action Log
| Date / Time | Item # | Issue Identified | Corrective Action Taken | WO # |
|---|---|---|---|---|
| ___/___/_____ ____:____ | _______ | _______________________________ | _______________________________ | _______ |
| ___/___/_____ ____:____ | _______ | _______________________________ | _______________________________ | _______ |
| ___/___/_____ ____:____ | _______ | _______________________________ | _______________________________ | _______ |
| ___/___/_____ ____:____ | _______ | _______________________________ | _______________________________ | _______ |
| ___/___/_____ ____:____ | _______ | _______________________________ | _______________________________ | _______ |
By signing below, the inspector verifies that all items have been checked according to the manufacturer's specifications and facility safety standards. Any failed items have been documented in the corrective action log and escalated to the maintenance supervisor.