62-11785 8–2
8.3 PRE-TRIP INSPECTION
Pre-trip inspection should be performed before every trip and at regular maintenance intervals. Pre-trip procedures
are provided the Trailer Refrigeration Pre-Trip Inspection document 62-90490.
Failure to follow the recommended maintenance schedule may affect the life and reliability of the refrigeration unit.
Table 8–1 Maintenance Schedule
System Operation Reference Section
a. Pre-Trip Inspections
1. Pre-Trip Inspection - Before starting
2. Pre-Trip Inspection - After starting
3. Run Microprocessor Pretrip - Before loading
Section 8.3
Section 8.3
Section 3.6
b. Every Service Interval or Yearly
Charging Circuit 1. Check battery charger output voltage
2. Check battery charger amperage
Section 8.8.12
Section 8.8.12
Unit 1. Check unit mounting bolts
2. Check compressor mounting bolts
3. Check door latches & hinges
Check
Check
Section 8.4.3
Refrigeration
System
1. Clean condenser surfaces
2. Check defrost air switch and calibrate as necessary
3. Check & clean the evaporator coil and all defrost drain hoses
4. Install manifold gauge set and check refrigerant pressure
5. Run APX Control System Pretrip
6. Check calibration of suction pressure transducer
7. Check manual defrost operation
Section 8.7.2
Section 8.7.12
Section 8.7.12
Section 8.7.1
Section 3.6
Section 8.5.1
Section 3.11
Electrical System 1. Check unit switches and electrical connections
2. Check all ground connections for corrosion & tightness
3. Check power plug for signs of wear or damage
4. Check control box / relay box condition
5. Check condenser fan amperage
6. Check evaporator fan amperage
7. Check compressor amperage
8. Check heater amperage
Check
Check
Check
Check
Figure 2.8
Figure 2.8
Figure 2.8
Figure 2.8