This task covers:
Tool Kit, service, refrigeration unit
Nitrogen (Appendix F, Item 2)
Power off at power source.
Both front door assemblies removed. See para 4-17.
General Safety Instructions:
HIGH VOLTAGE is used in the operation of this equipment, DEATIH- ON CONTACT or
severe injury may result if personnel fail to observe safety precautions. Always disconnect
the air conditioner from power source before performing maintenance on this equipment. if
power must remain on for troubleshooting, exercise extreme care to avoid contact with any
electrical component, fan, fan motor, etc. Do not operate the air conditioner without louvers,
top controls, and guards in place and tightly secured.
REFRIGERANT UNDER PRESSURE is used in the operation of this system.
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 he
refrigerant to break down and form carbonyl chloride (phosgene) a highly poisonous and
Nitrogen is an inert gas. However, it can cause death or bodily harm by replacing the oxygen
in the air. Ensure your work area is well ventilated and the nitrogen is discharged away from
Nitrogen cylinders are pressurized containers. The pressure in ,the cylinder can exceed 2000
psi. A nitrogen pressure regulator should be used at all times when nitrogen is used for leak-
test or purge operations. Do not allow nitrogen pressure regulator setting to exceed 200 psig