TM 10-4130-237-14
5-9.
REFRIGERATION SYSTEM SERVICE (CONT)
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6
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12
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Liquid refrigerant under pressure may cause injury to skin or eyes. Wear ther-
mal protective gloves and goggles when skin or eye contact is possible.
Contact of refrigerant with hot surface or flame creates toxic gas. Keep open
flame and hot surfaces away from refrigerant.
NOTE
Whenever available, use recycled refrigerant for charging the refrigeration
system.
Connect refrigerant drum to center hose connection of charging manifold. Open drum valve.
Partially open manifold valves. Allow gas to escape at service ports to purge service lines.
After 2 or 3 seconds, tighten two service port hose connections.
Allow gas to flow into system. Gages should show equal pressure.
CAUTION
To prevent damage to refrigeration system, make sure manifold suction valve
is closed.
Close manifold suction valve.
Position drum so that liquid can be used for charging. Some drums must be turned upside down; some
are equipped with a selector valve.
Allow liquid refrigerant to flow into system until two manifold gages have stabilized.
Close drum valve and manifold discharge valve.
Start water chiller (para 2-6a).
Position drum for gas only or turn selector valve to gas only position.
Open drum valve. Open manifold suction valve.
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