Maintenance Inspection Schedule

A closely followed maintenance program will help to keep your Thermo King unit in top operating condition. The following general schedule is provided to assist in monitoring that maintenance.

Note All service requirements, major and minor, should be handled by a Thermo King dealer.

Daily Weekly 12 Months or 2000 Hours 24 Months or 4000 Hours Inspect/Check/Service These Items
•       Check unit for any active alarms.
•       Inspect exterior of evaporator and condenser.
•       *Inspect evaporator air inlet and outlet for blockage (dirt, debris, cargo, etc.).
•       *Inspect condenser air inlet and outlet for blockage (dirt, debris, etc.).
•       Adequate air space above and around cargo.
  •     Inspect evaporator drain hoses (Verify water is not collecting in drain pan).
  •     Check unit for proper defrost operation.
    •   *Clean evaporator drain hoses.
    •   *Clean evaporator and condenser coils.
    •   Inspect moisture indicator and refrigerant level.
    •   Inspect wiring harnesses and connectors.
    •   Inspect refrigerant hoses.
    •   Inspect refrigerant hose connections for leaks.
    •   Inspect roadside compressor drive belt condition and tension.
    •   Inspect standby compressor drive belt condition and tension (20 and 50 Models Only).
    •   Check return air temperature sensor calibration.
      • Check suction pressure regulator setting (20, 30, 50 MAX Models Only).
      • Inspect evaporator and condenser mounting hardware.
      • Inspect ground terminals.
      • Replace filter dryer.

*More frequent cleaning may be required based on operating environment (dusty conditions, etc.).