Cable and Dress Pack Maintenance
Failure modes
- Stranded conductors breaking at the wrist after repeated bending.
- Cables rubbing inside the dress pack.
- Sheath worn through against a fixture edge.
- Insulation ageing from heat or coolant exposure.
Symptoms and response
| Symptom | Likely cause | Action |
|---|---|---|
| Intermittent alarm, clears on reset | Broken conductor | Replace the cable, do not mask the alarm |
| Signal noise | Damaged shield | Check routing and earthing |
| Position drift | Encoder cable interference | Separate power and signal paths |
Replace cables on hours, not on failure. A spare set on site is cheaper than a stopped line.