TM 9-4120-388-14
Table 3-1. Operator's Troubflshooting (Cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Be sure condenser air inlet and outlet are not obstructed.
Remove obstructions.
Step 3. Reset (PUSH) PRESSURE CUT-OUT switch(s) and restart unit.
If unit does not start, notify your supervisor.
Step 4. Be sure that condenser fan is operating. (Air being discharged from condenser air outlet.)
If fan is not operating, shut unit off and notify your supervisor.
Step 5. With unit operating in COOL mode, check condition of refrigerant in sight glass.
If indicator color is in the yellow zone or numerous bubbles appear in the window, turn selector switch
to OFF and notify your supervisor.
Step 6. Be sure that lower front panel is not loose or missing.
Lower front panel must be secure.
3-3