THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 5
Jun 1/03
2C17
21-50-00
CHART 1 (Sheet 3 of 5)
TROUBLESHOOTING AIR CONDITIONING SYSTEM
Trouble Cause Remedy
System does not cool. (cont.) If mechanical:
Loose or broken drive belt. Replace drive belts and
tighten to specifications.
Compressor partially or Remove compressor.
completely frozen. Service or replace.
Expansion valve stuck in Replace expansion valve.
open position.
If 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 leaking. Replace compressor.
Clogged screen or screens in Repair as necessary.
receiver dehydrator or expansion
valve; plugged hose or coil.
System cooling inadequate. If electrical:
Blower motor operation sluggish. Remove blower motor for
service or replacement.
If mechanical:
Compressor clutch slipping. Remove clutch assembly
for service or replacement.
Check clutch airgap and
coil.
Obstructed blower passage. Examine passage for
obstruction. Correct as
necessary.
Insufficient air circulation over Clean condenser coils.
condenser coils; fins clogged
with dirt or bugs.
Clogged evaporator filter. Clean with solvent.
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