TM 9-2320-289-34
10-21. AIR CONDITIONING SYSTEM SERVICING (M1010).
This task covers:
a . Discharging System
c. Charging System
b. Evacuating System
INITIAL SETUP:
Materials/Parts
Tools/Test Equipment
l Refrigerant (Item 54, Appendix B)
Charging station
Refrigerant gas leak detector
l STE/lCE
l Vacuum pump
Manual References
l TM 9-4910 -571-12&P
General Safety Instructions
l
l
l
l
l
Always wear goggles when testing or servicing air conditioner system. DO NOT allow refrigerant
to contact your skin.
DO NOT test or service air conditioner system while smoking or near open flame. Refrigerant will
become a poisonous gas when burned.
DO NOT allow direct flame or electric heaters to contact refrigerant container.
Never open high side valve on air conditioner manifold gage set while air conditioning system is
operating,
Never attempt to connect servicing equipment, discharge system, or charge system while air
conditioning system is running.
a. DISCHARGING SYSTEM
WARNING
Always wear goggles when testing or servicing air conditioner system.
DO NOT allow refrigerant to contact your skin. Failure to follow this
warning may result in injury to personnel.
DO NOT test or service air conditioner system while smoking or near
open flame. Refrigerant will become a poisonous gas when burned.
Failure to follow this warning may result in serious illness or death to
personnel.
DO NOT allow direct flame or electric heaters to contact refrigerant
container. Localized heat can raise pressure to a dangerous level and
cause refrigerant container to explode, resulting in serious injury or
death to personnel.
Never open high side valve on air conditioner manifold gage set while air
conditioning system is operating. Refrigerant may be pumped back into
refrigerant container and cause refrigerant container to explode,
resulting in serious injury or death to personnel.
Never attempt to connect servicing equipment or discharge system
while air conditioning system is running, Failure to follow this warning
may result in injury to personnel.
Change 2
10-79