Hawker 800 XP, Pilot Training Manual

Page: 191 / 504

Moving the lever to the TRANSFER (bottom)
position opens the transfer valve, and the cross-
feed valve remains open. Fuel transfer from
one wing to the other is achieved, in normal con-
ditions, by switching off one electric boost
pump. Fuel is drawn into the tank containing
the operating pump by jet pump operation.
Two LP COCKS control levers are on the right
side of the center console. The two levers con-
trol two low-pressure fuel valves, one in each
engine supply line, which can isolate the en-
gine fuel feed lines from the fuel tanks. Each
valve is open when the associated LP COCK
control lever is in the up position. A hinged
guard, fitted above the control levers, must be
lifted before the levers can be moved to the
closed (down) position.
INDICATORS
Two amber annunciators, labeled “FUEL 1
LO PRESS” and “FUEL 2 LO PRESS,” are lo-
cated on the FUEL section of the roof panel
(see Appendix B). The annunciators illuminate
when the fuel pressure in the engine fuel line
falls below 7 psi. The illumination of either
light is repeated by an amber annunciator on
the MWS center panel labeled “FUEL
↑
.”
A white AUX FUEL TFR annunciator located
on the FUEL section of the roof panel illumi-
nates whenever the AUX FUEL TRANSFER
lever is moved to the open position. This ad-
visory is repeated by a white annunciator on
the MWS center panel labeled “FUEL XFD
TFR
↑
.” (See Appendix B.)
An amber REFUEL ON annunciator located
on the roof panel illuminates whenever any re-
fuel valve is open. This advisory is repeated
by an amber annunciator on the MWS center
panel labeled “FUEL
↑
.” (See Appendix B.)
A white WING FUEL XFD/TFR annunciator
located on the roof panel illuminates when
the WING FUEL X FEED TRANSFER lever
is moved out of the closed position. This ad-
visory is repeated by a white annunciator on
t h e M W S c e n t e r p a n e l l a b e l e d “ F U E L
X F D / T F R
↑
.” ( S e e A p p e n d i x B . ) I n t h e
TRANSFER position the light flashes.
5-5
FOR TRAINING PURPOSES ONLY
HAWKER 800 XP PILOT TRAINING MANUAL
FlightSafety
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CENTER CONSOLE
ROOF PANEL
Figure 5-3. Fuel Controls