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

Page: 322 / 1956

PAGE 4
Feb 28/07
2D20
21-50-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
CHART 1 (Sheet 3 of 4)
TROUBLESHOOTING (AIR CONDITIONING SYSTEM)
Trouble Cause Remedy
System produces no
cooling. (continued)
Refrigeration
Broken refrigerant line. Examine all lines for
evidence of breakage by
external stress or rubbing
wear.
Leak in system. Evacuate system, apply
static charge, leak test
system, and repair leak as
necessary.
Compressor shaft seal Replace compressor.
leaking.
Clogged screen or screens in Repair as necessary.
receiver dehydrator or expansion
valve; plugged hose or coil.
System will not produce
sufficient cooling.
Electrical
Blower motor sluggish in Remove blower motor for
operation. service or replacement.
Mechanical
Compressor clutch slipping. Remove clutch assembly
for service or replacement.
Obstructed blower passage. Examine entire passage for
obstruction. Correct as
necessary.
Insufficient air circulation Clean condenser coils.
over condenser coils; fins
clogged with dirt or bugs.
Evaporator filter clogged. Clean with cleaning solvent
to remove cigarette tars.
Refrigeration
Insufficient refrigerant in Recharge system until
system. bubbles disappear in
receiver dehydrator and
gauge readings stabilize to
specifications.