Liquid Controls FlightConnect 600 - Manual (Page 48)

48
troubleShootIng
problem probable cauSe SolutIon
Valve will not open. 1.
2.
Solenoids are inactive or
inoperative.
Foreign debris in
system.
1. Insert a fueling ticket into the Epson printer and start a
fueling.
2. Move the selector switch from RUN to STOP and back
to RUN. Listen for an audible clicking sound from the
solenoids.
3. If there is an audible click from the solenoid (but still no
flow), this may be an indication of a mechanical problem
with the main valve or its associated components.
Contact your local Liquid Controls distributor or the Liquid
Controls service department for assistance.
4. If there is no audible click from the solenoid, check the
voltage to pin #s 14, 15, 17 and 18 of terminal block J13.
While still in RUN mode, use a multimeter to measure
the following DC voltages on the circuit board. Use J8 pin
#38 as a ground.
TERMINAL # VoLTAGE
J13 #14 12.0VDC ±1.5VDC
J13 #15 1.0VDC ± 0.5VDC
J13 #17 12.0VDC ±1.5VDC
J13 #18 1.0VDC ±0.5VDC
5. If the above voltages are correct, this may be an
indication of a problem with the valve or its associated
components. Contact your local Liquid Controls
distributor or the Liquid Controls service department for
assistance.
6. If the above voltage are incorrect, replace the solenoids
(PN varies depending on system). If the valve problem
persists, replace the LCR 600 circuit board (PN 84040).