THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 11
Jun 1/03
2C23
21-50-00
B. Special Servicing Procedures
The air conditioning system should be serviced by a qualified shop with trained personnel. The
following procedures and precautions should be observed.
CAUTION: UNITED STATES ENVIRONMENTAL REGULATIONS REQUIRE THAT AIR
CONDITIONING SYSTEM REPAIRS BE ACCOMPLISHED BY A QUALIFIED SHOP
WITH APPROPRIATELY TRAINED PERSONNEL.
The efficiency of this system depends upon the pressure-temperature relationship of pure
refrigerant. As long as the system contains only pure refrigerant plus a specified amount of
compressor oil (which is mixed with the refrigerant), it is considered to be chemically stable. Foreign
materials within the system will affect the chemical stability, contaminate the system, and decrease
its efficiency.
(1) Refrigerant Safety Precautions:
WARNING: REFRIGERANT HFC-134A IS ODORLESS AND COLORLESS IN EITHER THE
LIQUID OR GASEOUS STATE. REFRIGERANT FOR CHARGING
REFRIGERATION SYSTEMS IS SUPPLIED IN PRESSURIZED CONTAINERS
(APPROX. 70 PSI AT 70°F) IN LIQUID FORM. SINCE THIS MATERIAL IS
ESSENTIALLY INERT AT ROOM TEMPERATURES THE DANGERS ARE
PRIMARILY ASSOCIATED WITH THE PRESSURE AND THE REFRIGERATION
EFFECTS OF THE RELEASE AND SUBSEQUENT EVAPORATION OF THIS
PRESSURIZED LIQUID.
WARNING: WEAR SUITABLE EYE PROTECTION WHEN HANDLING REFRIGERANT DUE
TO THE POSSIBILITY OF FREEZING OF THE EYE IF CONTACTED BY
ESCAPING LIQUID REFRIGERANT. IF LIQUID REFRIGERANT DOES STRIKE
THE EYE, THE FOLLOWING ACTIONS SHOULD BE TAKEN:
1
DO NOT RUB THE EYE.
2
Splash large quantities of cool water into the eye to raise the temperature.
3 Tape on an eye patch to avoid the possibility of dirt entering the eye.
4
Rush to a physician or hospital for immediate professional aid.
5
DO NOT ATTEMPT TO TREAT IT YOURSELF.
WARNING: IF LIQUID REFRIGERANT STRIKES THE SKIN, FROSTBITE CAN OCCUR.
TREAT WITH COOL WATER AND PROTECT WITH PETROLEUM JELLY.
WARNING: DO NOT DISCHARGE LARGE QUANTITIES OF REFRIGERANT INTO CLOSED
ROOMS. IT MAY DISPLACE MOST OF THE AIR IN THE ROOM AND THIS
COULD CAUSE OXYGEN STARVATION. GASEOUS REFRIGERANT IS
HEAVIER THAN AIR AND FLOWS TO THE BOTTOM OF A CONTAINER.
WARNING: DO NOT APPLY DIRECT FLAME OR OTHER HIGH HEAT SOURCE TO A
REFRIGERANT CONTAINER DUE TO THE HIGH PRESSURES WHICH WILL
RESULT. IF ANY HEATING IS DONE TO REFRIGERANT CONTAINERS THE
CONTAINER PRESSURE SHOULD BE MONITORED AND KEPT BELOW 150
PSI.
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