Piper SARATOGA PA-32-301 Maintenance Manual page 375

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
CREW/PASSENGER SYSTEMS.
- CA UTION -
Do not attempt to tighten any connections while the system is
charged.
Bottles which have been evacuated to Spsifor a significant length of
time, or those that do not produce an audible hissing sound when the
valve is cracked, should be removed and hydrostatically tested. If
either of these conditions has existedfor a significant length of time
it is also recommended that the system be purged.
Make sure there is no oil, grease, hydraulic fluid, or fuel in the
vicinity of any fittings being serviced.
Do not use thread lubricants of any kind. Tefln tape (3M No. 48)
should be used on TAPERED pipe threads without the tape
extending beyond the first thread, refer to effective information in
this chapter.
Before working with the system make sure the aircraft is electrically
grounded, and your hands and clothes are free of oil, grease, and
dirt.
FIXED OXYGEN SYSTEM.
INSPECTION AND MAINTENANCE.
Due to the nature of the process used to tests compressed gas tanks, servicing and hydrostatic test must be
conducted by a DOT or manufacturer (Scott Aviation) approved shop. The following material gives
recommended inspection and maintenance information for the various parts of the oxygen systems.
-NOTE-
Oxygen cylinders are identified by the ICC or DOT identification
stamped on the cylinder. The standard weight cylinder (ICC orDOT
3A A 1800) must be hydrostatically tested at the end of each 5 year
period. Lightweight cylinders (ICC or DOT 3HT 1850) must be
tested every 3 years and be replaced after 4380 refills or 24 years,
whichever comes first. The month and year of the last test should be
stamped on the cylinder beneath the ICC, DOT identification.
1. Check the outlets for leakage both in the use and non-use condition. and for leakage around an
inserted connector. For leak testing information refer to the appropriate subject in this chapter.
2. Check the high pressure gauge for accuracy by comparing its indicated pressure with that of a gauge
of known accuracy connected to the fill port.
35-10-02
Page 35-03
2E10
Added: May 21, 1980
2El0