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Table 4-2. WIRE LIST (cont) - 506780106
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TM-5-4120-359-14 Air Conditioner Split Package 18 000 BTU/HR Cooling 30 000 BTU/HR Heating 208 Volt 3 Phase 400 Hertz Manual
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Figure 4-4. Discharging Refrigerant
TM 5-4120-359-14
4-4. REFRIGERATION SYSTEM REPAIRS GENERAL
The refrigeration system must be totally discharged before any maintenance action is performed on any system
component. Leak testing and dehydrator replacement are required after any system component has been removed and
replaced. The system must be evacuated before it is charged. The system must be properly charged to function
properly.
WARNING
DANGEROUS CHEMICAL
is used in this equipment.
DEATH
or severe damage 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 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 toxic and corrosive gas.
WARNING
REFRIGERANT UNDER PRESSURE
is used in the operation of this equipment
DEATH
or severe injury may result if you fail to observe safety precautions. Never use a
heating torch on any part that contains Refrigerant R-22.  Do not let liquid
refrigerant touch you, and do not inhale refrigerant gas.
4-5. DISCHARGING THE REFRIGERANT SYSTEM
Preliminary Procedure: Remove air conditioner from shelter, if necessary. (See paragraph 3-6.)
WARNING
Death or severe damage 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 toxic
and corrosive gas.
NOTE
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 system.
a. Remove caps from the two service valve hose connections.
b. Connect the charging manifold hoses to the manifold and air conditioner service valves.
c.
Attach a hose assembly to the center connection of the manifold.
Change 4 4-25

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