Interruptions In Water Preparation - Kärcher SB MU Manual De Instrucciones

Fault Possible cause
Base exchanger is No power supply
not regenerating
Hardness sensor defective
Water remains No salt in the salt tank
hard after regener-
ation
Injector filter is blocked
Water flow to the salt tank is inadequate
Rising pipe is leaky
too high salt con- too much water in the water tank
sumption
wrong salt quantity setting
Pressure loss Deposits in water inlet
Deposits in base exchanger
Too much water in Rinsing aperture is blocked
the salt tank
Injector is blocked
Foreign particles in the solenoid valve
Power failure while filling brine
Brine is not getting Water inlet pressure is too low
sucked in
Rinsing aperture is blocked
Injector is blocked
Leak inside the valve
There is always wa- Valve does not execute the correct cycles
ter in the drainage,
even after regener-
Foreign particle in the valve
ation
RO Pump does not Buffer tank for permeate is full
start
Level sensor "Buffer container full" defective
Start-up time of the control has not yet been
completed
Pressure switch for water scarcity is defective Check pressure switch; replace it, if required.
No softened water is coming from the base ex-
changer
Regeneration of the base exchanger is incom-
plete
RO pump continu- Fine filter or active carbon filter dirty
ously goes on and
off
RO pump starts Too low mains water pressure
only after several
rinsing cycles
Fine filter or active carbon filter dirty
70

Interruptions in water preparation

Remedy
Check power supply (fuse, plug, switch).
Check hardness sensor, replace if required
Fill up salt, do not allow the salt level to fall below the
water level.
Clean the filter
Check the brine filling duration; clean the brine filling
aperture, if required.
Check rising pipe, pilot pipe
see below
Check salt consumption and salt settings
Clean the filter
Clean valve and resin board
Clean rinsing aperture
Clean injector and filter
Clean the solenoid valve, change the valve seat
Check power source
Increase water pressure to at least 0.3 MPa (3 bar). Operator
Clean rinsing aperture
Clean injector and filter
Replace valve flaps
Check timer programme; replace the valve controls,
if required
Remove the valve control, take out the foreign parti-
cle, check valve in all the positions
Wait until the permeate is consumed.
Check level switch.
Wait.
Check the base exchanger.
Add salt, add water and wait for brine formation (ap-
prox. 2 hours); start regeneration, check the base
exchanger, if required.
Check filter; replace the filter inlay, if required
Check mains water supply; open the inlet valve fully,
if required.
Check filter; replace the filter inlay, if required
33
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EN
By whom
Operator/Cus-
tomer Service
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vice
Operator
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
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Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Customer Ser-
vice
Operator
Customer Ser-
vice
Operator
Customer Ser-
vice
Operator/Cus-
tomer Service
Operator/Cus-
tomer Service
Operator
Operator
Customer Ser-
vice