Kärcher SB MB, Manual

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22
Washing station 3 and 4 not shown.
1 Burner inclusive flow-type heater
2 Circulation pump for warm water
3 Balancing vessel
4 Swimmer tank for warm water
5 Safety valve
6 Locking valve of feeder pipe
7 Pipes of washing place heating
8 Thermostat mixing valve
9 Heat exchanger
10 Locking valve for filling pipe
11 Circulation pump for washing place
heating
– Opens when the permissible operating
pressure is exceeded - also even the le-
ver for hand-spray gun is released and
circulates the water. The high-pressure
jet is available when the hand-spray
gun is opened again.
The overflow valve is set by the manufac-
turer and sealed. Setting only by customer
service.
– The safety valve protects the heating
circuit of washing place heating (option)
against excess pressure.
– Regulates the feed temperature for the
washing place heating (option) depend-
ing on the return flow temperature.
If the burner does not ignite or the flame ex-
tinguishes during operation, then the flame
monitor closes the fuel solenoid valve and
switches off the burner blower.
– If the exhaust temperature exceeds the
permissible value, then the exhaust
thermostat automatically switches off
the burner and locks it.
– If the water temperature in the swimmer
tank for warm water falls when hot wa-
ter is removed and cold water flows in,
the tempreature sensor of the warm wa-
ter circulation pump switches on and
switches off again when the maximum
temperature is reached.
– Prevents the formation of steam in the
boiler.
– The flow monitor switches on the burner
after the warm water circulation pump
has been started.
– Switches off the burner if there is very
little water in the warm water swimmer
tank.
– The motor protection switch interrupts
the electric circuit if the motor is over-
loaded.
SB MB standard:
If the residual hardness of the softened wa-
ter exceeds a marginal value, the control
will calculate the residual capacity of the
base exchanger cylinder.
At the latest in the following night, the re-
generation of the base exchanger bottle is
started.
SB MB comfort:
If the residual hardness of the softened wa-
ter exceeds a limit value, the regeneration
of the base exchanger bottle begins imme-
diately.
If there is no water, the plant is stopped in
order to prevent dry running of the pump.
Switches off the pump when the buffer tank
for permeate is full.
Switches on the RO pump to produce per-
meate.
Emits a signal to the system when the per-
meate buffer tank is empty.
Prevents the externally added water over
60°C from being led to the HP pumps and
damaging them.
In case of a malfunction, the system switch-
es to an alternative water type (is set by the
service technician upon initial startup).
Washing place heating (option)
Monitoring and safety devices
Overflow valve of high-pressure pump
Safety valve
Thermostat mixing valve
Flame monitoring
Exhaust thermostat
Temperature controller
Temperature controller
Flow monitor
Water shortage safeguard
Motor protection switch
Hard water sensor
Pressure switch for RO water shortage
Level switch Buffer tank is full
Level sensor pump RO on
Level switch Buffer tank is empty
Temperature limiter 4. type of water /
warm (option)
24 EN