Electronics International FP-5L - Manual (Page 11)

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13. Install the Instrument in the Panel:
Install the instrument from behind the instrument panel using 6 x 32 screws. These screws must not be any
longer than 1/2". Tie wrap any loose wires as needed. Make sure the instrument and wire do not obstruct the
operation of any controls. Mount the placard "Do Not Rely on Fuel Flow Instrument to Determine Fuel Levels
in Tanks" on the aircraft instrument panel near the FP-5.
If the aircraft is equipped with a primary fuel flow and/or pressure instrument, the following placard must
be mounted on the aircraft instrument panel near the FP-5: "Refer to Original Fuel Flow/Pressure Instrumenta-
tion for Primary Information".
14. Connect the Circular Connector to the Instrument:
A. Push the two mating connectors together and twist them until they snap into position.
B. Turn the locking ring on the instrument connector clockwise (1 1/2 turns) until it locks into position.
15. System Check-out:
Check instrument operation as follows:
A. Turn the aircraft master switch on (engine off) and verify that the red warning LED's on the FP-5 flash
and the green "REM" mode LED is blinking. A problem at this step could be caused by poor connections
on the red or black power and ground leads.
B. Set the instrument toggle switch to "FLOW" and check for a digital fuel flow reading of "000." A
problem at this step could be caused by a poor connection or crossed flow transducer wires. The voltage on
the flow transducer wires (with the transducer removed from the instrument) should measure as follows:
Red Wire - +9 to 14 Volts
Black Wire - 0 Volts
White Wire - 0 or 5 Volts (plused when fuel is flowing)
C. Check the digital display backlight. With high or medium ambient light it is hard to see the digital
display backlight (it is only required during low ambient light conditions but should be on at all times).
D. If the Display Mode Indicator LED dimming wire has been connected, turn the panel light rheostat up
and look for the Display Mode Indicator LEDs to dim.
E. With the engine running, check the "FLOW" Display Mode to read properly. If there is a problem at this
point see step B above for troubleshooting information. To see if the instrument is receiving pulses from the
flow transducer, disconnect the white wire from the transducer and short it rapidly (white wire to the instru-
ment) to ground. A reading should appear on the display.
Rev. I: 7/2/02