Page 41 of 47
28.06.13
DIS-14-ek
Rev Nr: 1
Appendix B
– Failure Guide
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSES?
WHAT TO CHECK?
HOW TO FIX THE PROBLEM IF
DETERMINED?
Dispenser does not deliver gas.
a) Break-away coupling may have
came away.
a) Check the break-away coupling on
the hose.
a) Place the break-away coupling into
position.
b) Nitrogen tube may be empty.
b) Check the nitrogen tube.
b) Replace the nitrogen tube.
c) CPU fuse may be blown.
c) Check the fuse.
c) Replace the CPU fuse.
d) Nozzle may be broken.
d) Check the nozzle.
d) Replace the nozzle.
e) Solenoids may be broken.
e) Check the solenoids.
e) Replace the solenoids.
Display flashes at any parameter.
a) PR button on the CPU card may be
stuck.
a) Observe dispenser display.
a) Press PR key until EP is displayed.
Gas alarm sounds.
a) There may be gas leakage.
a) Check for leakages on all systems.
a) Press gas alarm reset key for 3
seconds.
b) Gas detector may be broken.
b) Check the gas detector.
b) Replace the gas detector.
Thermic relay on the panel blows
continuously.
a) Thermic relay may be out of
adjustment.
a) Check the current drawn from the
network by the pump.
a) Replace the diver pump.
b) Thermic relay may be out of
adjustment.
b) Check the thermic relay.
b) Adjust thermic relay.
Nozzle leaks gas.
a) Washer located on the tip of the
nozzle may be worn.
a) Check the nozzle washer.
a) Remove washer and reverse it.
Replace the washer if problem
persists.
b) Threads of the nozzle may be
broken.
b) Check the nozzle.
b) Replace the nozzle.
Totalizer does not work.
a) Totalizer’s coils may be broken.
a) Check the totalizers.
a) Replace the totalizers.
b) Dispenser control unit may not be
sending signals to totalizers.
b) Check the CPU card.
b) Replace the CPU card.
c) Graphics card may be broken.
c) Check the graphics card.
c) Replace the graphics card.
