Piper SARATOGA PA-32-301 Maintenance Manual page 390

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
PORTABLE OXYGEN SYSTEM.
REMOVAL OF OXYGEN UNIT. (Refer to Figure 35-8.)
- WARNING -
Do not use grease or any grease type fittings on any hardware that
connects to the oxygen bottle or system hardware. When working
with the oxygen system make sure hands, clothing and tools arefree
of oil, grease and dirt.
An oxygen unit can be released from its cradle by pulling down on the ring under the cradle, sliding the
unit forward, and lifting it out of the cradle.
INSPECTION AND OVERHAUL TIME.
Due to the nature of the process used to test compressed gas tanks, it is recommended that overhaul.
service or hydrostatic tests be conducted by an FAA or manufacturer (Scott Aviation) approved shop. The
following checks and charts give recommended inspection and overhaul times for the various parts of the
oxygen system.
-NOTE-
Oxygen cylinders are identified by the ICC or DOT identification
stamped on the cylinder. The standard weight cylinder (ICC orDOT
3AA1800) must be hydrostatic tested at the end of each 5 year
period. Light weight cylinders (ICC or DOT 3HT1850) must be
tested every 3 years and after 4380 refills, or 15 years whichever
comesfirst, be replaced. The month andyear of the last test stamped
on the cylinder beneath the ICC DOT identification.
1. Inspect outlets, and using directions described in the next paragraph, check leaks both in the non-use
and use condition.
2. Check the pressure gauge for accuracy by removing the back section of the unit and connecting a
gauge of known accuracy, to the fill port.
3. Inspect tank for dents, bulges, major strap chafing marks or corrosion. Should any of these
conditions exist, the tank should be hydrostatically tested.
CHART 3504. OXYGEN SYSTEM COMPONENT LIMITS (PORTABLE)
Parts Inspection
Overhaul
Regulator 300 Flight Hrs.
5 yrs.
Pressure Gauge 300 Flight Hrs.
5 yrs.
Outlets 300 Flight Hrs.
5 yrs.
Recharge Valve Each Use
Replace every 5 years
Masks
Each Use
Replace as necessary
35-10-19
Page 35-18
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Added: May 21, 1980
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