Page 39 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 delivers too much or too
little
a) Distribution valve, Charcoal, Felt may be
damaged.
a) Check distribution valve, charcoal
and felt.
a) Replace broken part.
b) Adjustment roller may need readjustment.
b) Check the adjustment roller.
b) Readjust the adjustment roller.
c) Pulser may be broken.
c) Check the pulser.
c) Replace the pulser.
d) Pulser shaft may have torsion.
d) Check the pulser shaft.
d) Fix the torsion.
e) Piston arms may be twisted.
e) Check the piston arms.
e) Replace the piston arms.
f) Piston cups may be torn or worn
f) Check the piston cups.
f) Replace the piston cups.
Dispenser flow rate is less than
expected.
a) Filter may be clogged.
a) Check the filter.
a) Change the filter.
b) Solenoids may be clogged or solenoid core
may leak.
b) Check the solenoids.
b) Clean solenoid, replace the core,
replace solenoid if necessary.
c) Diver may not generate sufficient pressure.
c) Check the manometer on the diver.
c) Replace the diver pump.
d) Direction of the diver pump may be wrong.
d) Check the diver pump revolution
direction.
d) Change the position of two phase
cables of the diver pump on the
control panel.
e) Differential rubbers may be torn.
e) Check the differential valve.
e) Replace the differential rubbers.
f) Break-away coupling may be clogged,
broken or misplaced.
f) Check the break-away coupling.
f) Clean the break-away coupling,
replace it if broken.
g) Nozzle may be damaged.
g) Check the nozzle.
g) Replace the nozzle.
h) Vehicle tank may be full.
h) Check the lever on the tank.
h) Stop filling the vehicle with full tank.
I) Pulser shaft may be jammed.
I) Check the pulser shaft.
I) Loosen and tighten adjustment
bolts.
