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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.
Auto refueling can be interrupted at any time by moving the START/STOP switch to
the STOP position. Individual tank quantities can be seen in the other two windows of
the display.
For Training Purposes Only
Sept 04
Appx-45
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
EARLIER VERSION RDCP REFUEL/DEFUEL PROCEDURES
NOTES
1. The maximum refueling pressure is 50 psig.
2. The Tank Pressure Relief Valves must be tested for proper
function prior to refueling by manually operating the three
external pull handles.
3. Maximum fuel imbalance of 1100 pounds is allowed between
the two main tanks, following which, the tank quantity window on
the RDCP flashes an IMBAL message alternating with the tank
quantities every two seconds.
4. A SHUTOFF TEST of the system must be conducted during
each refueling.
AUTO REFUEL
The procedure for auto refuel is as follows:
• Open the RDCP access panel
• Place the MASTER switch in the ON position
• Allow the FMQGC to conduct BITE test until tank quantities are displayed steady
in all windows
NOTE
If a system fault is detected, the windows will display dashed
lines or error message(s) in the individual tank windows instead
of quantities. Do not proceed without investigating and rectifying
fault.
• Verify no error messages are displayed in any of the individual tank quantity
windows
• Verify all MANUAL tank switches are in the CLOSE position
• Place the MODE SELECTOR switch in the AUTO REFUEL position
• Note the quantities in the TOTAL and PRESEL windows. They should be the
same
• Hold the PRESEL switch in the INCR position until the PRESEL window displays
the desired total fuel quantity
• Connect the refuel tender to the single point adapter and adjust the tender pressure
as desired but not to exceed 50 psig
• Place the START/STOP switch in the START position and release it
• Verify tank quantities show increase
• Place the spring-loaded SHUTOFF TEST switch in the TEST position and hold it.
P I LOT T R A I N I N G GU I D E
GLOBAL 5000 DIFFERENCES
APPENDIX 1
Appx-46 For Training Purposes Only
Sept 04
• Verify the PRESEL window displays SOV TEST
• Verify all tank quantities stop increasing to confirm the refuel valves have closed
• Verify the PRESEL window displays SOV STOP alternating with the preselected
value and does not display SOV FAIL
• Release the SHUTOFF TEST switch and verify tank quantities resume showing
increase with the preselected quantity showing steady in the PRESEL window
• The FMQGC shall control the fueling sequence automatically within the required
loading sequence
• When all tank quantities stop registering an increase, verify that the displays in the
TOTAL and the PRESEL window are the same and no error message is displayed
in any of the windows. Each tank window should display the quantity in it as
distributed by the FMQGC in the automatic mode and should add up to the
TOTAL displayed
• Disconnect the tender as required and return the RDCP MASTER switch to the
OFF position
• Secure RDCP access panel
MANUAL REFUELING
In “manual” mode, it permits the operator to select and control the fuel quantity to be
added in each tank through the refuel/defuel panel. In this mode, the high level sensors
automatically close the refuel/defuel SOVs, if the maximum fuel level capacity is
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