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OFF
REFUEL
DEFUEL
REFUEL
LEFT CTR RIGHT
OPEN
MANUAL
C
REFUEL/DEFUEL PANEL
TOTAL PRESEL
LEFT CENTER RIGHT
LEFT/CTR/RIGHT
MANUAL Switches
Manually controls
valves open or closed.
PRESEL INCR/DECR
Switch
Increases or decreases
the preselected quantity
for AUTO refueling
START/STOP/SOV TEST
Switch
START
STOP/SOV TEST
– Starts automatic
refueling
Stops
automatic refueling and
performs SOV test.
–
Quantity Displays
GX_appx_023
MODE SELECTOR
OFF
AUTO / REFUEL
MANUAL / REFUEL
DEFUEL
–
–
–
–
No power to panel
Selected when aircraft to be
fueled automatically to a preselected fuel load.
Selected when fuel tanks filled
manually by operator.
Selected when defueling
aircraft by manually opening tank SOV’s.
MANUAL /
For Training Purposes Only
Sept 04
Appx-43
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
FAULT REPORTING
Fault reporting is in the form of error messages which will appear in the display
windows of the refuel/defuel panel.
The following illustration represents one example of fault reporting:
ERROR MESSAGES
The following messages may be displayed on the refuel/defuel panel if a fault exists:
INHIBIT
In manual refuel or defuel mode, displayed when a tank switch is in the OPEN
position. In pressure defuel mode, displayed when an engine is on (no fire handles
pulled). In auto mode, displayed when the preselected fuel quantity is invalid, airplane
is in CAIMS maintenance mode, or the SOV shutoff test fails.
FULL
Displayed when the high level shutoff has been activated.
LOAD ERROR
In auto refuel mode, displayed when an invalid fuel distribution is selected. Example,
one tank contains more fuel than the target quantity assigned by the automatic
distribution.
IMBAL
Displayed when a predetermined fuel quantity imbalance exists between the left and
right wings.
REPEATER
Displayed in the PRESEL window of the external Refuel/Defuel Panel when two
panels are powered ON. The panel located in the flight compartment is in control and
the outside panel provides quantity display only.
_ _ _ _ _ _
Dashes will be displayed for a fuel quantity if the computed value is invalid.
FAILED
Displayed in the PRESEL window if the Refuel/Defuel Panel is not functional.
FMQGC - FAILURE
FMQGC will be displayed in the TOTAL window and FAILURE in the PRESEL
window if the Refuel/Defuel Panel is not communicating with the fuel computer.
REPEATER
This indicates that two
panels are powered on.
GX_appx_024
TOTAL PRESEL
LEFT CENTER RIGHT
10000 6100
26100
10000
REPEATER
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
Appx-44 For Training Purposes Only
Sept 04
PRESSURE REFUELING
Pressure refueling is accomplished through the single point refuel/defuel adapter,
located in the right hand wing root, and is controlled by the refuel/defuel control panel.
An optional duplicate refuel/defuel control panel can be installed in the flight
compartment.
NOTE
A SHUTOFF TEST must be carried out prior to all refueling
operations.
If the test is successful, a SOV PASS is displayed in the PRESEL window. If the test
fails, a SOV FAIL is displayed in the PRESEL window.
Pressure refueling may be performed in either “automatic” or “manual” mode. The
airplane does not have a fuel jettison system.
A preselect fuel quantity is used during automatic refueling of the airplane. This
method will allow the airplane to be filled automatically to the desired fuel state
selected.
NOTE
The preselect quantity is the desired final total fuel quantity in the
tanks, and not the quantity to be added.
The computer determines the required distribution of fuel into each of the aircraft
tanks to achieve the preselected value and controls each refuel valve accordingly. The
refuel schedule (planning only) will fill the wings first, then the center tank. If the
center tank is used, it will be fueled to a minimum of 500 pounds to ensure pump
priming. The shutoff point, for each tank, is “anticipated” by the computer by
monitoring the refueling rate to determine the correct shutoff point for each individual
refueling operation.
When auto refueling is terminated by the computer, the quantity showing in the
TOTAL window is equal to that in the PRESEL window.
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