Piper Arrow IV Turbo Maintenance Manual page 126

CHART 2102. TROUBLESHOOTING (AIR CONDITIONING SYSTEM) (cont)
Trouble
Excessively noisy system.
(cont)
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
Cause
Electrical
Compressor noisy.
Compressor oil level low.
Refrigeration
Excessive charge in system.
Low charge in system.
Excessive moisture in
system.
1F6
Remedy
Check mountings and re-
pair; remove compressor for
service or replacement.
Fill with correct amount
of specified oil.
Discharge excess freon until
high pressure gauge drops
within specifications.
Check system for leaks;
charge system.
Replace dehydrator; purge,
evacuate, and charge system.
21-00-02
Page 21-07
December 1, 1978