REFRIGERANT UNDER PRESSURE
is used in the operation of this equipment.
or severe injury may result if you fail to observe safety precautions. Never use a
heating torch on any part that contains refrigerant 22. Do not let liquid refrigerant
touch you. and do not inhale refrigerant gas.
a. Supplies. To charge the refrigeration systcm, you will need the following supplies.
is used in this equipment.
or severe injury may result if personnel fail to observe safety precautions. Use
great care to avoid contact with liquid refrigerant gas being discharged under
pressure. Sudden and irrevcrsible tissue damage can result from freezing. Wear
thermal projectile gloves and a face protector or goggles in any situation where
skin-eye-contact is possible. Prevent contact of refrigerant gas with flame or hot
surfaces. Heat causes refrigerant to break down and form carbonyl chloride
(phosgene), a highly poisonous and corrosive gas.
Nevcr introduce liquid refrigerant into the low pressure (suction) service valve.
The system must be evacuated before charging. Use only refrigerant 22 to charge
the unit. If available, use recycled refrigerant.
a. Check that the hose from the low pressure charging valve is connected to the compound gage side of the
charging manifold, The hose from the high pressure charging valve should be connected to the pressure gage side of
the charging manifold.
b. Connect the center hose from the charging manifold to a well charged cylinder of refrigerant 22.
c. Loosen the hose connections to the two air conditioner charging valves slightly.
d. Open the two charging manifold valves.
Change 2 5-17