ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
5.24. SIGHT REFRIGERANT GLASS. This task covers inspection, repair, removal and installation.
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Disconnect input power to the air conditioner before performing any internal
maintenance. Voltages used can KILL, Shutting the unit off at the control panel does
not disconnect unit power.
Disconnect air conditioner input power at source;
Remove return air filter (paragraph 4 26); and
Aspect for evidence of leaks or damaged lines (see fig. 5-15).
Repair of the sight refrigerant glass consists of tightening the sight glass.
a. Remove plastic cover (3)
c. Remove sight refrigerant glass (2).
a. Cut off one swedged end (either end) of replacement sight glass to shorten overall length to 5 inches (12.7 cm).
b. Position sight glass (2) in unit.