TM 9-4120-399-14
5-22. LIQUID SIGHT INDICATOR (SIGHT GLASS).
This Task Covers:
b. Installation
a. Removal
Initial Setup:
Tools Required
Tool kit, Refrigeration
Material's Rewired
None
Equipment Condition
Air conditioner shut down and cool.
Intake (return air) guard removed (See para. 3-5).
Refrigerant system discharged (See para. 5-7).
Purge the system (See para. 5-8).
Debraze the tube connections (See para. 5-9).
Removal.
(1) Remove two screws (1), two flat washers (2), and two lock washers (3) that secure
liquid sight indicator (4) and mounting plate (5) to casing (6).
(2) Remove liquid sight indicator (4) and mounting plate (5) from casing (6).
b. Installation.
NOTE
Do not disassemble liquid sight indicator.
(1) Position liquid sight indicator (4) on tubing.
(2) Purge the system (See para. 5-8).
(3) Braze the tube connections (See para. 5-9).
(4) Replace the dehydrator (See para. 5-15).
(5) Leak test all newly connected joints and those in the repair area (See para. 5-10).
(6) Evacuate the refrigerant system (See para. 5-11).
(7) Charge the system (See para. 5-12).
(8) Secure mounting plate (5) and liquid sight indicator (4) to casing (6) with two screws
(1), two flat washers (2), and two lock washers (3).
(9) Install intake (return air) guard (See para. 3-5).
