Pretrip Inspection

  1. Visually check the unit for physical damage.

  2. Check the electrical connections in the unit control box, making sure they are fastened securely.

  3. Check the conditions of wires and terminals. Repair or replace if necessary.

  4. Inspect both refrigeration systems for evidence of oil leaks at all joints and connections.

    Note With empty box and all components in R23 system always verify correct charge in R23 system according to pressure readings listed below

  5. 5.Check R-23 refrigeration system pressures. Suction and discharge pressure gauges should show 1,600 to 1,800 kPa, 16.0 to 18.0 bar, 232 to 261 psig in both the high and low side with the unit OFF and the container empty.

  6. Check the condenser and evaporator coils. Clean if necessary. Use an air or water spray jet directed against the coil from the air discharge side. Also inspect the condenser fan grille for damage. If the grille is damaged or missing, abnormally high head pressure may result. Repair or replace the grille if necessary.

      Caution
    • Equipment Damage
    • Air or water spray jet pressure should not be high enough to damage (bend) coil fins.

  7. Check the mounting bolts on the unit, compressor and fan motors. Tighten if necessary.

  8. Clean the defrost drains.

  9. Check vacuum valve for proper operation.

  10. Observe the unit for proper operation and functions during Pre-load Operation.

Parent topic: Operating Instructions