ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
5.21. HIGH REFRIGERANT PRESSURE SWITCH (S5). This task covers inspection, removal, testing/adjustment and
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Varnish, moisture and fungus resistant (Item 11, Appendix E)
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,
a. Check that switch and cover are not dented, broken or cracked. Replace switch and cover if defective (see fig.
b. Check bracket is not dented, broken or cracked. Replace bracket if defective.
c. Check that wire leads are properly connected (see fig. FO-2.)
Remove cover (11)
Tag and disconnect leads
Disconnect high refrigerant pressure line (1).
Remove screw (5). two flat washers (3), locknut (4), and clamp (2)
Remove two screws (8), flat washers (6). and lockwashers (7)
Remove switch (9)