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9. Trouble shooting
Fault
Possible cause
Action
A. Pumps/forward drive/brushes will
not start.
The machine is not connected to the
power source.
The main switch is turned off.
There has been a thermal cut-out.
Connect the power.
Switch the main switch to position ”I”
Check the frequency converter in
the electrics cabinet.
B. Forward drive roller and brushes
are not rotating.
The power supply to the motor for
the forward drive is interrupted.
The V-belts/toothed belts are too
loose or damaged.
A belt is broken.
The forward drive roller, V-
belt/pulley is not fastened to the
axel.
See ”A”
Tighten/replace the belt (-s)
Replace the belts or chains.
Fasten the pulley.
C. No, or too little, liquid is coming
out of the nozzles.
The power supply to the motor for
the pumps is interrupted.
The nozzle valves are shut.
Grime in the suction filter.
The nozzles are blocked.
The springs in the excess pressure
valve may be too loose.
See ”A”
Open the nozzle valves.
Unscrew the filter strainer and clean.
If necessary, blow clean pressurised
air through it.
Remove and clean the flow nozzles
and end plugs.
Clean the nozzle hoses.
Check all the hoses for dirt.
Ensure that the hose couplings are
tightened and sealed so that the
pump does not suck in "false" air.
Open all the nozzle valves.
Take the excess pressure valve out
of the bucket. If lots of fluid comes
out, the spring needs tightening
(lengthening).
D. The motor for the pumps cuts
out.
The motor is overloaded because
the excess pressure valve is
blocked
Clean the excess pressure valve
and hoses. When assembling the
excess pressure valve, the grey
gauge block must face in towards
the valve. Wait approx. 10 minutes
and then reset the pump motor.
E. The motor for forward
drive/brushes cuts out.
The motor is overloaded because
the backpressure roller and/or
brushes are too tightly adjusted up
to the item.
Adjust the setting.
Wait approx. 10 minutes and then
reset the forward drive motor.
