Fuel Boost Pump Switch
(LEFT, CTR, RIGHT)
(AFT and forward)
OFF - Removes AC power from applicable fuel boost pumps.
ON - Turns on AC circuit to power applicable fuel boost pump. All boost pumps are protected by an internal thermal switch.
FUEL FLOW Gage/FUEL USED
Readout (2)
Dial indicates fuel flow rate delivered to
engine.
Digital readout indicated total fuel used
by engine.
C - S Switch
A three position test switch
placard C and S with the center
position not placarded. The switch
is springloaded to the center position.
The C position (compensator) tests
the compensator circuits external of
the indicator. The S position (system)
tests the indicator and its active
CD
power supply channel. AB
CS
TEST
ZFW
For Maintenance Use
SET ZFW Button
Chanel Selector and
Push-To-Talk Button
Calculated zero fuel weight (ZFW) Digitized Fuel Quantity Display is set by pushing in and rotating Position A selects test
button in required direction. channel A, position B. Each Displays individual tank quantity, Release button and ZFW and fuel tank digital readout will total fuel quantity and gross weight. quantity will add up to gross weight. display 3000. TOTAL FUEL When ANNUN/DIGITAL LTS TEST is As fuel is used, quantity shown will display 9000. GROSS WT activated each digit displays the continuously reduces to represent will display ZFW plus 9000. number 8. actual gross weight.
MD801301
FUEL - CONTROLS AND INDICATORS
Sec. 13 Page 6
MD-80
Continental
Rev. 12/01/00 #29 Flight Manual
Fuel Transfer Pump Switch
(AFT and FWD AUX TRANS)
TEST - Starts the transfer pumps to test operation. If transfer pumps are operating properly the lights on the annunciator panel will go out. The switches are spring loaded to the OFF position and should be released as soon as test is completed.
OFF - Removes ac power from applicable fuel transfer pump.
AUTO - Arms the ac circuit to power applicable transfer pumps and starts transfering when center main tank reaches approximately 13,200 pounds. All transfer pumps are protected by an internal thermal switch. NOTE
Forward and aft auxiliary tanks should be used
simultaneously.
AFT AUX FUEL
PUMP PRESS LOW
AUX FUEL PUMP PRESS LOW Light (FWD, AFT) Comes on to indicate the auxiliary
fuel pump is inoperative.
NOT INSTALLED ON SOME AIRPLANES
MD801302
FUEL - CONTROLS AND INDICATORS
MD-80 Sec. 13 Page 7
Flight Manual Continental Rev. 12/01/00 #29
L INLET FUEL
R INLET FUEL
PRESS LOW
PRESS LOW
AGENT
DISCH
AGENT 1 AGENT LOW
DISCH
1
2
AGENT 2 1 2
LOW
L
LOOPS A R
E FIRE BELL LOOPS B N OFF TEST
ETEST NG GF FI
ENG FIRE Shutof Handles (L, R) For function refer to FIRE WARNING NAD PROTECTION Chapter
FUEL X-FEED Lever
Engine Throttles
Lever must be lifted up to unlockFor function refer to ENGINE prior to actuation to ON or OFF.
chapter.
OFF - Fuel crossfeed valve is
1
closed, allowing left main
3
6 fuel tank to feed left engineDESCEND and right main fuel tank to
feed right engine and APU.
ON - Opens fuel crossfeed valve, allowing either or both main tanks to feed both engines or APU.
Fuel Control Levers (L, R) Fuel lever locl/release button must be depressed to unlock lever prior to actuation to ON or OFF. OFF - Shuts off fuel to applicable
engine, then turns of ignition. ON - Turns on ignition to applicable engine, then turns on fuel.
MD801303
FUEL - CONTROLS AND INDICATORS
Sec. 13 Page 8
MD-80
Continental
Rev. 12/01/00 #29 Flight Manual
FUEL SELECT Digital Indicator (5) FUEL QTY Digital Indicator (5)
Digital display reflects numerically the fuel Indicates total fuel quantity in quantity selected by the set knob. respective fuel tank when
FUNCTION knob must be at NORMAL and FUNCTION knob is at REFUEL knob must be at AUTO. NORMAL.
L MAIN
J1
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