Maintenance Inspection Schedule

A closely followed maintenance program will help to keep your Thermo King unit in top operating condition.

Coordinate the maintenance inspection schedule with the Bus Preventive Maintenance Schedule. Ask your Thermo King dealer representative for the Thermo King Bus A/C Preventive Maintenance forms for more information.

Note Thermo King reserves the right to deny warranty coverage on claims due to lack of maintenance or neglect. Claims in question must be supported by maintenance records.
Note For further best practices, please go to www.europe.thermoking.com/best-practices.

Off Season Operation Of Bus Air Conditioning System
Prior to operating the compressor during winter months, you must warm up the coach interior to normal operating temperature (15 to 21 °C [60 to 76 °F]). Unless this precaution is taken, Thermo King Warranty may be voided and the compressor may be damaged.

Pre-trip Inspections

Performed daily and weekly by the driver.

  • Check Driver panel for Alarm codes.

  • Listen for unusual noises, vibrations, etc.

  • Visually inspect unit for damaged, loose or broken parts (includes air ducts and bulkheads if so equipped).

  • Units with Power Pack only: Check fuel supply.

  • Units with Power Pack only: Visually inspect unit for fluid leaks. (fuel, coolant, oil and refrigerant).

Other Maintenance

Other maintenance on the unit should be performed by your local Thermo King dealer or authorized service center.

The following intervals are general recommendations. The periods may vary - this depends on ambient conditions, pollution or local transportation laws. Please use common sense then judging replacement of filters and cleanliness based on first four months of service.

Examples are shown in the table below. Your local Thermo King dealer will prepare a schedule to suit your specific needs.

Service Record: Each inspection and service performed should be recorded on Dealer Service Record.

Interim Inspection Complete PM Full Service

A Service

Monthly (M): after 10000 km (6,000 Miles)

Quarterly (Q): after 30000 km (18,000 Miles)

Semi-Annually (SA): regardless of mileage

Annually (A): regardless of mileage

B Service

Every 2 years (2Y): regardless of mileage

C Service

Every 3 years (3Y): regardless of mileage