Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 331 / 1956

PAGE 13
Feb 28/07 2E5
21-50-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
CAUTION: UNITED STATES ENVIRONMENTAL REGULATIONS REQUIRE THAT AIR
CONDITIONING SYSTEM REPAIRS BE ACCOMPLISHED BY A QUALIFIED
SHOP WITH APPROPRIATELY TRAINED PERSONNEL.
E. Servicing the System (with a Charging Stand)
CAUTION: MINERAL OIL AND PAG ARE NOT COMPATIBLE. USE A SEPARATE MANIFOLD
TEST SET AND / OR TEST/CHARGING STAND AND RECOVERY SYSTEM FOR
EACH REFRIGERANT TYPE.
CAUTION: USE RECOVERY UNIT SPECIFICALLY DESIGNED FOR THE TYPE OF
REFRIGERANT USED IN THE AIRCRAFT SYSTEM. UNINTENDED AFFECTS MAY
OCCUR IF REFRIGERANTS ARE COMBINED.
(1) Discharging (Bleeding/Purging) the System
CAUTION: APPLIES TO ROBINAIR 34700 OR SIMILAR CHARGING/RECOVERY STATION.
SEE OPERATOR'S MANUAL OF STATION BEING USED FOR DETAILED
INSTRUCTIONS FOR DISCHARGING SYSTEM.
This procedure is for a Robinair 34700 or similar charging stand/recovery station, see Figure 3.
Required only if the system contains refrigerant.
NOTE: The term “Discharge,” as used throughout this section, in no sense implies or
suggests discharging refrigerant to atmosphere. In all cases when discharging, an
environmentally approved refrigerant recovery station is to be used.
(a) Gain access to service valves by removing rear access panel.
(b) Remove protective caps from access valves.
(c) Connect high side (red) hose to air conditioner high side service valve. On systems
equipped with quick disconnect connections, open coupler valve.
(d) Connect low side (blue) hose to air conditioner low side service valve. On systems
equipped with quick disconnect connections, open coupler valve.
ALUMINUM TUBING
Metal Tube O.D. Thread and Fitting Size Ft./Lb.
1/4 7/16 5-7
3/8 5/8 11-13
1/2 3/4 15-20
5/8 7/8 21-27
3/4 1-1/16 28-33
FLARE CONNECTIONS O-RING CONNECTIONS
Tube OD Thread size Ft./Lb. Tube OD Thread size Ft./Lb.
3/8 5/8 18-20 3/8 5/8 11-13
1/2 3/4 36-39 1/2 3/4 15-20
5/8 7/8 52-57 5/8 7/8 21-27
CHART 3
RECOMMENDED TORQUE SPECIFICATIONS