Gasboy Fuel Truck Controller - Manual (Page 76)

Fuel Truck Controller Manual 70
Pump malfunction
Turn the Fuel Truck
Controller bypass switch
on, lift the nozzle and
check that the pump
supplies fuel
If the problem persist:
1. Check Handle-On
Switch
2. Repair pump
Handle-on switch
problem
Is the In Use red LED in
MPI-C board lit when
nozzle is lifted?
1. Check In Use cable and
repair, if necessary
2. Check Terminal wires
and repair, if necessary
3. Check The In Use
Switch in the pump and
repair, if necessary
Pump is
authorized but
Call state is not
detected (nozzle
icon in SiteOmat
Status screen
does not display
Call state)
Faulty in-use switch
in pump
Power off the pump, using
a ohmmeter measure the
switch in on and off states
Replace pump switch in
cases where no short was
detected
Faulty connections Check In Use cable
Check In Use terminal
block connections
Make good electrical
connection if faulty one
exists
Faulty In Use
terminal block
Replace In-use terminal
block
Faulty MPI-C board Verify that the Call red
LED is lit when nozzle is
lifted
If the red LED is not lit,
replace MPI-C board.
If the led is lit, the problem
is external to the controller
Faulty 8-Port Replace 8-Port
Pump is
authorized, pump
motor is running,
but no fuel is
supplied
Faulty solenoid
valve
Faulty pump
Does the pump solenoid
valve produce a clicking
sound?
1. Replace valve
2. Repair pump
Table 4-1. Fuel Truck Controller Troubleshooting (Cont'd)
Fault Probable Cause Checks Corrective Action
Mechanic pump does not refuel (Continued)