Hawker 800 XP, Pilot Training Manual

Page: 482 / 504

With the master SUPPLY valve open, oxygen
is available to the crew’s pressure regulator and
to the therapeutic outlets. A barometric valve
located under the oxygen panel automatically
controls delivery of oxygen to the passenger
masks via a passenger supply (on/off) valve
(Figure 17-5) which is on the forward face of
the left bulkhead in the cockpit.
CREW OXYGEN SYSTEM
Two EROS masks/regulators are provided.
Each mask has a pneumatic head harness
and a regulator (Figure 17-6). The regulator
has a two-position N–100% PUSH rocker
selector switch and a PRESS TO TEST/(turn
for) EMERGENCY knob. For the mask to op-
erate, it must be plugged into the quick-re-
lease socket.
The mask is removed from storage by grasping
and depressing the red harness control inflation
plates of the regulator. This opens a valve and
allows oxygen to flow from the supply to in-
flate the harness (see Figure 17-6). As the in-
flated harness is fitted over the head, releasing
the control plates will allow the oxygen from
the harness to vent. As the harness deflates, the
mask is held firmly against the user’s face.
Revision 1 17-4
FOR TRAINING PURPOSES ONLY
HAWKER 800 XP PILOT TRAINING MANUAL
FlightSafety
international
Figure 17-5. Passenger Supply Valve
N
100%
PUSH
PRESS
TO
TEST
EMERGENCY
Figure 17-6. EROS Oxygen Mask