8–3 62-11640
These maintenance schedules are based on the use of approved oils and regular Pre-trip inspections of the unit.
Failure to follow the recommended maintenance schedule may affect the life and reliability of the refrigeration unit.
Unit 1. Check unit mounting bolts Check
2. Check engine and compressor mounting bolts Check
3. Check door latches & hinges Section 8.4.4
4. Check condition of water pump belt Check
Refrigeration
System
1. Check defrost air switch and calibrate as necessary Section 8.8.11
2. Check & clean the evaporator coil and all defrost drain hoses Section 8.8.1
3. Install manifold gauge set and check refrigerant pressure Section 8.6
4. Run APX Control System Pretrip Section 3.6
5. Check calibration of suction pressure transducer Section 8.6.1
6. Check manual defrost operation Section 3.11
Electrical System 1. Check unit switches and electrical connections Check
2. Check all ground connections for corrosion & tightness Check
3. Check stand−by plug for signs of wear or damage Check
4. Check condenser fan amperage Section 2.10
5. Check evaporator fan amperage Section 2.10
6. Check compressor amperage Section 2.10
7. Check heater amperage Section 2.10
c. 5 year or 12,000 Hour Maintenance
Coolant System 1. Drain and flush cooling system Section 8.5.14
2. Refill with Extended Life Coolant Section 8.5.14
d. Oil Change Intervals
Oil Type Oil Change / ESI Filter Change
Petroleum 3000 hours or 2 years (Maximum oil drain interval is 2 years)
Mobil Delvac 1* 4000 hours or 2 years (Maximum oil drain interval is 2 years)
* Mobil Delvac 1 is the only approved synthetic oil
Table 8–1 Maintenance Schedule
System Operation Reference Section