Kärcher SB MB Bedienungsanleitung Seite 74

Malfunction Possible cause
Foam quality is poor, Detergent container empty
foam too dry or too wet
Suction filter dosing pump is clogged Rinse the filter with warm water.
Water supply is too low
Compressor does not supply air
Compressor is overheated
Pressure reducer of foam station is
contaminated
Solenoid valve for water/chemistry
does not open
The setting of the dosing valves for wa-
ter/chemistry or air is incorrect
Incorrect detergent, detergent contam-
inated or old
Malfunction Possible cause
Base exchanger does not No power supply.
regenerate
Hardness sensor is defective
Base exchanger regener- Clock was adjusted by power failure
ates during operating time (option, only with WAT-S 202)
Water remains hard after Salt tank is empty.
regeneration
Injector filter is clogged
Water inflow to the salt tank is insuffi-
cient
Riser pipe is leaking
Salt consumption is too Too much water in the salt tank
high
Incorrect salt quantity setting
Pressure loss Deposits in the water supply
Deposits in the base exchanger
Too much water in the salt Rinsing screen is blocked
tank
Injector is clogged
Foreign body in the brine valve
Power failure during brine filling
Brine is not sucked in Water inlet pressure too low.
Rinsing screen is blocked
Injector is clogged
Leak in the valve interior
Water is constantly in the Valve does not perform cycles correct-
drain, even after regener- ly
ation
Foreign body in the valve
RO pump does not start Permeate buffer tank is full
The "buffer tank full" level switch is
faulty
Start-up time of the controller is not yet
finished
Pressure switch for water shortage
was triggered
Pressure switch has a water shortage
fault
Base exchanger regeneration is run-
ning
No softened water comes from the
base exchanger
Pump disconnection from mains (op-
tional) not working
RO pump only starts after Water mains pressure too low
several flushing cycles
Fine filter or active carbon filter is con-
taminated
Permeate output is too Water supply temperature is too low
low, buffer tank permeate
is often empty
Operating pressure is too low
Lime or mineral deposits on the filter
surface of the RO membrane
The buffer tank "full" level switch is
faulty
Bacteria or algae deposits on the filter
surface of the RO membrane
74
Malfunctions during dry foam production (option)
Rectification
Replace the container.
Restore the water supply, check the setting of the foam station pressure reducer
(0.25 MPa (2.5 bar)).
Check the compressor. Drain the condensation water from the compressor pres-
sure tank.
After cooling down, the compressor automatically starts up again.
Clean the pressure reducer.
Check voltage with a magnetic field tester, clean the solenoid valve, replace if nec-
essary
Set to the standard setting (see chapter Operation and settings).
Change the detergent.
Malfunctions in the water treatment
Rectification
Check the power supply (fuse, plug, switch).
Check the hardness sensor, replace if necessary.
Reset the time (see "Settings/Setting the WAT-S 202 base autoexchanger")
Refill softening salt, wait for brine formation (approx. 2 hours), start a manual re-
generation. Never allow the salt level to fall below the water level in the salt tank.
Clean the injector filter.
Check the brine filling time, clean the brine filling orifice if necessary.
Check the riser pipe and the pilot pipe.
Check the salt consumption and salt quantity setting.
Clean the water supply.
Clean the valve and resin board.
Clean the rinsing screen.
Clean the injector and filter.
Clean the brine valve, change the valve seat.
Check the power supply.
Increase the water inlet pressure to at least 0.3 MPa (3 bar).
Clean the rinsing screen.
Clean the injector and filter.
Replace the valve flaps.
Check the timer programme, replace the valve control if necessary.
Remove the valve control, remove the foreign body, check the valve in all posi-
tions.
Wait until permeate is used up.
Check the level switch.
Wait.
Fine filter or active carbon filter is contaminated. Check both filters, replace the fil-
ter inlay if necessary.
Check the pressure switch, replace if necessary.
Wait for the end of the regeneration.
Check the base exchanger.
Check the voltage supply. Check the pump.
Check the water mains pressure, if necessary open the supply valve completely. Operator
Check both filters, replace the filter inlay if necessary.
Measure the temperature of the softened water and compare it with the technical
data.
Readjust the operating pressure.
Descale the membrane, replace if necessary.
Check the level switch.
Rinse the membrane for a long time, replace if necessary. Note in the future: Water
in drinking water quality, avoid long downtimes.
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