Piper SARATOGA PA-32-301 Maintenance Manual page 379

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
- CA UTION -
Care must be exercised to prevent contamination
of components by
oil, grease, water, orforeign matter. Compressed
air used in cleaning
andflushing tubes must be clean, dry filtered (oil free) air only.
Three methods are recommended for cleaning oxygen system components.
1. Method 1.
A. Vapor degrease part(s) with trichlorethylene.
B. Blow part(s) dry with a stream of clean, dry, filtered (oil-free) compressed air, or dry nitrogen.
Refer to previous caution.
2. Method II.
A. For tubing, flush with naptha per specification TT-N-95.
B. Blow clean and dry off all solvent with clean, dry, filtered (oil-free) air. Refer to previous
caution.
C. Flush with isopropyl alcohol.
D. Rinse thoroughly with fresh water.
E. Dry with air as described in previous caution or by heating at a temperature of 250° to 300 F for
one half hour.
-NOTE
-
Solvents may be reused provided they do not become excessively
contaminated with oil. This condition can be determined by
completely evaporating 100 milliliters of the liquid in a glass dish of
a determined weight. Evaporation may be accomplished by heating
the dish at 200°F for one half hour. If after evaporation and cool
down, the residue exceeds 100 milligrams in weight, the solvent
cannot be used for this purpose.
3. Method III.
A. Flush with hot inhibited alkaline cleaner until free from oil and grease.
B. Rinse thoroughly with fresh water.
C. Dry thoroughly with a stream of clean air as described in the previous caution, or by heating 250
to 300°F for one-half hour minimum.
4. After cleaning, all tubing must be protected by caps, plugs, and/or plastic bags.
- CA UTION -
Do not use adhesive tape on oxygen components for attaching or
securing protective coverings. UseLudlowNo. 6 waxedlacing twine
or tie raps.
5.
Before reinstallation make sure fitting, tube, and fixture threads are in good condition and that
the cones do not exhibit pitting or disfigurement.
35-10-03
Page 35-07
2E14
Revised: August 23, 1982