Piper SARATOGA PA-32-301 Maintenance Manual page 382

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
CHART 3502. OXYGEN SYSTEM COMPONENT LIMITS (FIXED)
Parts
Inspection
Overhaul
Regulator
Pressure Gauge
High Pressure Lines
Low Pressure Lines
Outlets
External Recharge Valve
Masks
300 Flight Hours
300 Flight Hours
300 Flight Hours
300 Flight Hours
300 Flight Hours
Each Use
Each Use
5 yrs.
Replace on Condition
Replace on Condition
Replace on Condition
Every 5 years
Every 5 years
Replace as necessary
1. On condition replace the rubber components in the assembly or replace assembly.
2. If the screen in front of value is dirty. replace valve. Valve replacement is recommended every 5 years.
LEAK TESTS.
Solutions recommended for leak testing are Leak-Tec Formula #16-OX, and that available from Scott
Aviation. Refer to the List of Consumable Materials for consumer information.
1. Remove the royalite covers in the baggage compartment and, with oxygen system turned off.
disconnect the low pressure supply line and connect it to a regulated cylinder charged with dry nitrogen.
- NOTE-
Whenever a leak check is performed, all fitting connections as well
as other questionable areas, should be inspected
2. Apply the leak detector solution to the test surface and watch for indication of leakage.
3. Large leaks will produce bubbles immediately, but small leaks will form a white foam in 5 to 60
seconds.
4. With outlets vacated of masks, connect a test pressure gauge to the co-pilot's outlet as described in the
subject paragraph on Inspection and Maintenance, see Figure 35-2.
5. Adjust the regulator on the dry nitrogen cylinder for 100 psi and check for leakage at the outlets.
6. Correct any leaks and wipe off excess leak detector solution.
7. Close the valve on the nitrogen gas tank and insert a Scott plug-in to relieve system pressure.
8. Disconnect test gauge, plug-in, and nitrogen tank.
9. If the oxygen cylinder is not to be hooked up or installed immediately, cap and cover the exposed
fittings with new clean plastic bags. Temporarily support lines as needed to prevent damage. Make sure caps
and coverings are as clean as possible.
35-10-06
Page 35-10
Revised: August 23, 1982
2E17