TM 9-2320-289-34
10-20. AIR CONDITIONING SYSTEM TESTING (M1010).
This task covers:
a. Testing
INITIAL SETUP:
Materials/Parts
Tools/Test Equipment
l Refrigerant (Item 54, Appendix B)
• Charging station
l STE/lCE
Manual References
l TM 9-4910 -571-12&P
General Safety Instructions
l Always wear goggles when testing or servicing air conditioning system. DO NOT allow refrigerant
to contact your skin.
l DO NOT test or service air conditioning system while smoking or near open flame. Refrigerant will
become a poisonous gas when burned.
l DO NOT allow direct flame or electric heaters to contact refrigerant container.
l Never open high side valve on air conditioner manifold gage set while air conditioning system is
operating.
l Never attempt to connect servicing equipment while air conditioning system is running.
a. TESTING
WARNING
l Always wear goggles when testing or servicing air conditioning system.
DO NOT allow refrigerant to contact your skin. Failure to follow this
warning may result in injury to personnel.
l DO NOT test or service air conditioning 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.
l DO NOT allow direct flame or electric heaters to contact refrigerant
container (1). Localized heat can raise pressure to a dangerous level and
cause refrigerant container to explode, resulting in serious injury or
death to personnel.
l Never attempt to connect servicing equipment while air conditioning
system is running. Failure to follow this warning may result in injury to
personnel.
1 .
Completely close low side valve (3) and high side valve (6) on manifold gage set.
2 .
Remove protective caps from low pressure line (9) valve and high pressure line (10) valve.
Loosely connect low pressure hose (8) to low pressure line valve and high pressure hose (7) to
high pressure line valve, Connect center hose (2) to valve on refrigerant container (1).
10-74 c h a n g e 2
