Cessna TURBO CENTURION T210M 1978 Pilot Operating Handbook page 212

OXYGEN SYSTEM
(MODEL T210)
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
optional microphone-headset combination has been in
use, the microphone lead from this equipment is already
plugged into the auxiliary microphone jack. It will be
necessary to disconnect this lead from the auxiliary
microphone jack so that the adapter cord from the oxygen
mask microphone can be plugged into the jack.) A switch
is incorporated on the left hand control wheel to operate
the microphone.
A remote shutoff valve control in the overhead console above the
pilot's and front passenger's seat is used to shut off the supply of oxygen to
the system when not in use. The control is mechanically connected to the
shutoff valve at the cylinder. With the exception of the shutoff function, the
system is completely automatic and requires no manual regulation for
change of altitude.
The oxygen cylinders, when fully charged, contain a total of approxi-
mately 74 cubic feet of aviator's breathing oxygen (Spec. No. MIL-O-27210),
under a pressure of 1800 PSI at 21°0 (70°F). Filling pressures will vary,
however, due to ambient temperature in the filling area, and the tempera-
ture rise resulting from compression of the oxygen. Because of this,
merely filling to 1800 PSI will not result in a properly filled cylinders. Fill
to pressures indicated on the table below for ambient temperatures.
2
I
WARNING
I
Oil, grease or other lubricants in contact with oxygen
create a serious fire hazard, and such contact must be
avoided when handling oxygen equipment.
AMBIENT
FILLING
AMBIENT FILLING
TEMPERATURE
PRESSURE
TEMPERATURE PRESSURE
OF
PSIG
OF
PSIG
0
1600 50 1825
10
1650 60
1875
20
1700 70
1925
30
1725 80
1975
40
1775 90
2000
Figure
1.
Oxygen Filling Pressures