TM 9-4120-407-14
Figure 4-6. Service Manifold Installation
(2) Check that discharge and suction service valves are closed.
(3) Unscrew hose connection protective caps (5).
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 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 valves.
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