TM 9-4120-388-14
Table 3-1. Operator's Troubleshooting (Cont.)
MALFUNCTION
TEST OR lNSPECTION
CORRECTIVE ACTION
Step 5. Be sure condenser air inlet and outlet are not obstructed.
Remove obstructions.
Step 6. With unit operating in COOL mode, check condition of refrigerant in sight glass.
If indicator is in the yellow zone or numerous bubbles appear in window, turn selector to OFF and notify
your supervisor.
Step 1. Be sure that all doors, windows, and other openings in the room or enclosure are tightly closed.
Tightly close all openings.
3-5