TM 9-4120-385-14
WARNING
High voltage can kill.
1. Disconnect power supply.
2. Remove 16 screws and rain seal washers and canvas cover.
3. Remove two screws and access cover.
4. Remove 11 screws and rain seal washers and top panel.
5. Visually inspect pressure regulator valve for damage or evidence of leakage.
6. Perform leak test if leakage is suspected. Refer to Paragraph 5-3.
7. Check for missing hardware such as screw, clamp, or nut. Refer to Figure 5-20.
b.
REMOVAL.
WARNING
Use great care to avoid contact with liquid refrigerant or refrigerant
gas being discharged from any container under pressure. Sudden
and irreversible tissue damage can result from freezing. Wear
thermal protective gloves and a face protector or safety glasses in
any situation where skin or eye contact is possible.
Prevent contact of refrigerant gas with flame or hot metal surfaces.
Heat causes the refrigerant to break down and form carbonyl
chloride (phosgene), a highly toxic and corrosive gas. In case of
refrigerant leaks, ventilate area immediately.
Release refrigerant. Refer to Paragraph 5-5.
1.
2.
Remove screw (1), nut (3) and clamp (2).
Nitrogen purge. Refer to Paragraph 5-6.
3.
4.
Wrap expansion valve with wet rags to act as a heat sink during debrazing.
Debraze pressure regulator valve from tubing and remove.
5.
5-64
