5-9. DISCHARGING THE REFRIGERANT SYSTEM
(See figure 5-2.)
Death or serious injury may result if personnel fail to observe safety precautions. Use great care to avoid
contact with liquid refrigerant or refrigerant gas being discharged under pressure. Sudden and irreversible
tissue damage can result from freezing. Wear thermal protective 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 the refrigerant to break down
and form carbonyl chloride (phosgene), a highly poisonous and corrosive gas.
Figure 5-2. Discharging refrigerant
In accordance with Environmental Protection Agency regulations refrigerants cannot be discharged into
the atmosphere. A refrigerant recovery & recycling unit must be used whenever discharging the refrigerant
a. Disconnect power at the power source.
b. Remove the refrigerant charging valve access cover.
Remove the caps from the charging valve hose connections.
d. Connect a charging manifold to the charging valves.
e. Attach a hose assembly to the center connection of the manifold.
Operation of the recovery/recycling unit must be by AUTHORIZED PERSONNEL ONLY
Connect and operate a recovery/recycling unit in accordance with the manufacturer's instructions.