TM 9-4120-402-14
5-10. SERVICE MANIFOLD INSTALLATION
This task covers: a. Install
b. Remove
INITIAL SETUP
Tools
Equipment Condition
Refrigeration Unit Service Tool Kit
Appendix B, item 1
CAUTION
Goggles
Use disconnect switch (NOT
Appendix B, item 2
POWER CABLE) to disconnect
power to unit. Damage to cable
Gloves
connector pins will result if cable is
Appendix B, item 2
used.
Disconnect power at power source.
a.
Install.
(1)
Remove four sets of screws (1), flat washers (2), and one access (service valves) cover (3).
(2)
Check that DISCHARGE and SUCTION SERVICE VALVES are closed.
(3)
Unscrew hose connection protective caps (4).
WARNING
Dangerous chemical refrigerant under pressure is used in the operation of this equipment. Use
great care to avoid contact with liquid refrigerant.
Sudden and irreversible tissue damage can result from freezing. Wear gloves and a face
protector or safety glasses in any situation where skin or eye contact with refrigerant is possible.
Heat causes the refrigerant to break down and form carbonyl chloride (phosgene), a highly toxic
and corrosive gas. Prevent contact of refrigerant with flame or hot surfaces.
(4)
Connect the pressure gauge hose to DISCHARGE SERVICE VALVE and the blue (compound gauge) hose to
SUCTION SERVICE VALVE.
(5)
Check that all four service manifold valves are closed.
(6)
Open DISCHARGE and SUCTION SERVICE VALVES.
(7) Loosen the pressure gauge hose at service manifold and allow refrigerant to purge for 3-5 seconds. Tighten
hose.
(8) Loosen the compound gauge hose at service manifold and allow refrigerant to purge for 3-5 seconds. Tighten
hose.
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