General; Description And Operation; Troubleshooting - Piper PA-31-350 Maintenance Manual

PIPER AIRCRAFT
T-1020
MAINTENANCE MANUAL
GENERAL.
This chapter provides supplemental information for servicing oxygen system of the T-1020.
DESCRIPTION AND OPERATION.
The oxygen system consists of a storage cylinder, filler valve, dump outlet, regulator assembly, mask
outlet ports and masks. distribution lines, pressure gauge and an ON/OFF control.
The storage cylinder is filled through the filler valve and supplies high pressure oxygen to the regulator
assembly. The cylinder contains a valve assembly with a safety outlet which will vent the oxygen overboard
through the dump outlet in the event of system over-pressurization.
High pressure oxygen is routed from the regulator to the pressure gauge while low pressure oxygen is
routed from the regulator to the outlets and masks whenever the control knob is pulled to the ON position.
Each outlet has a spring loaded valve which prevents the flow of oxygen until a mask hose is engaged in the
outlet.
- CA UTION -
Only specially dried, A viator's Breathing Oxygen conforming to
MIL-O-27210, Type I is authorized for use in the oxygen system.
TROUBLESHOOTING.
Chart 3501 lists the troubles which may be encountered along with their probable cause and suggested
remedy.
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Issued: September 2, 1981
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