PRESSURE SWITCHES - INSPECT/TEST/REPLACE.

TM 5-4120-386-14

5-23. PRESSURE SWITCHES - INSPECT/TEST/REPLACE.

This task covers:

Test

Inspect

Removal

Installation

INITIAL SETUP

Equipment

Condition

c ondition Description

Para

4-17

Top Covers removed.

4-20

Mist eliminator and bracket removed.

4-25

Junction Box removed.

5-10

Refrigerant system discharged.

Test Equipment

Special Tools

Tool Kit SC 5180-90-CL-N18

Multimeter or Continuity Tester

Halogen Leak Detector

Materials/Parts

Nitrogen (Item 4, App.D)

Dehydrator

Refrigerant

REMARKS

ACTION

LOCATION/ITEM

Check that power source is

disconnected before doing any

maintenance on the air conditioner.

Check that refrigerant system is

discharged of refrigerant.

FRONT OF HOUSING

Inspect

Check wiring and sensing tube for

damage.

Removal

Remove two mounting screws

(1 and 4) and two lockwashers

(2 and 5) from each switch

(3 and 6).

b. Unhook the electrical leads

from the pressure switches.

Tag leads for identification

at assembly.

5-76