Pilot's Operating Handbook
Section 8
Handling, servicing and maintenance
Edition 1 - January 15, 2018
Rev. 5
Page 8.7.9
Replenishment procedure
▲ WARNING ▲
Mak
e sure that the airplane is fitted with a grounding cable and is
properly grounded.
The oxygen cart must be electrically bonded to the airplane.
Do not operate the airplane electrical switches or
connect/disconnect ground power during oxygen system
replenishment.
Do not operate the oxygen system during refueling/defueling or
perform any other servicing procedure that could cause ignition.
Introduction of petroleum based substances such as grease or oil
to oxygen creates a serious fire hazard. Use no oil or grease with
the oxygen replenishment equipment.
Always open the shut-off valve slowly to avoid generating heat,
and replenish the system slowly at a rate not exceeding 200 PSIG
(13.7 bars) per minute.
▲
▲ CAUTION ▲
Replenishment of the oxygen system should only be performed by
qualified personnel.
▲
● NOTE ●
The cylinder is fully charged at a pressure of 1850 PSIG (127 bars) at a
temperature of 70° F (21° C). If the cylinder temperature differs from 70° F
(21° C), refer to figure 8.7.4 - which lists the required pressures according to the
cylinder temperature.
●
1 - Open the oxygen service door at the rear of the right wing fairing.
2 - Measure the oxygen cylinder temperature.
3 - Make sure the thermometer indication is constant. Note the indication.
4 - Refer to the temperature/pressure chart for the correct oxygen cylinder
pressure.
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