Liquid Indicator

TM 5-4120-393-14

5-18. Liquid Indicator

This task covers:

a. Inspection

c. Installation

b. Removal

Initial setup.

Tools:

Tool kit, service, refrigeration unit NSN 5180-00-596-1474

Personnel: 1

Equipment condition:

1. Turn unit power off at power source. If there is a chance that it will be turned on, also disconnect power

cable to air conditioner.

2. Remove lower front panel. See para 4-24.

General Safety Instructions:

WARNING

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.

INSPECTION

Check that glass window is clean and not cracked or broken. Clean if dirty. Replace liquid indicator if cracked or

broken.

Check for evidence of leakage. Leak test if leak is suspected. See para 5-12. Repair or replace as indicated.

REMOVAL

Using screwdriver, remove two screws (1) and washers (2) from rear while holding bracket (3) so that it does not drop

down into unit.

Remove bracket (3).

Discharge refrigerant system. See para 5-9.

While purging the system with nitrogen, debraze the tubing See para 5-10 and 5-11.

Remove liquid indicator (4).

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