TM 9-4120-378-14
This task covers inspect, removal, test and installation.
PRESSURE SWITCHES-INSPECTS/TEST/REPLACE.
INITIAL SETUP
Test Equipment
Equipment Conditions:
Multimeter or continuity tester
Front top cover removed (paragraph 4.17)
Mist eliminator and bracket removed (paragraph 4.20)
Halogen leak detector
Junction box removed (paragraph 4.25)
Material/Pare
Refrigerant system discharged (paragraph 5.4)
Nitrogen (Appendix E, Item 4)
Remarks
Action
Location/Item
Check that power source is discon-
nected before doing any maintenance
on the air conditioner. Check that re-
frigerant system is discharged of re-
frigerant.
Front of
Housing
Check wiring and sensing tube for damage.
Inspect
Removal
a. Remove two mounting screws (1 and 4) and two
Iockwashers (2 and 5 ) from each switch 13 and 6).
b. Unhook the electrical leads from the pressure
switches. Tag leads for identification at assembly.
