· Rumtoo Service Team · Operations · 1 min read
Preventive Maintenance Checklist for Plastic Recycling Washing Lines
A practical weekly and monthly checklist to reduce unplanned downtime in washing and pelletizing systems.
Most serious line failures are not sudden. They are visible weeks earlier through vibration, temperature drift, and throughput instability.
Daily checks
- inspect abnormal noise in shredder/crusher bearings
- verify conveyor tracking and belt tension
- check water pressure and spray nozzle blockage
- record motor current on key stations
- monitor dewatering moisture trend
Weekly checks
- inspect knife wear and bolt tightness
- clear sludge accumulation in tanks and pipes
- test magnetic and metal separation performance
- inspect seals and leak points around pumps
- verify control cabinet ventilation and dust level
Monthly checks
- align critical rotating assemblies
- calibrate flow and pressure instruments
- inspect electrical terminals for heat marks
- review spare parts minimum stock
- compare actual vs design throughput data
KPI signals that require intervention
- throughput drops more than 8-10% with same input
- moisture after dewatering climbs above normal baseline
- energy per ton increases continuously
- contamination in output rises batch after batch
Spare parts strategy
Keep at least one replacement set for high-wear and high-impact parts:
- crusher knives and screens
- pump seals and bearings
- conveyor belts and idlers
- key sensor units
Final note
A maintenance checklist only works if someone owns it. Assign line responsibility by module, not by shift only.
Rumtoo usually provides maintenance guidance linked to each delivered process node so plant teams can execute faster and more consistently.
