Kärcher SB OB Manual Del Usuario página 23

Anti-freezing circulation circuit
If there is a risk of frost, circulating water flows through
the cleaning tools and their supply lines, thus protecting
them from freezing.
The anti-freezing circulation circuit is placed in opera-
tion by the anti-freezing pump.
The following components show that the system is
equipped with an antifreezing circulation:
For a better overview, the maintenance work required to
ensure correct operation of the frost protection system
is summarised again here. To check the frost protection
Time & date Activity
Before the frost period Clean the frost protection pump filter.
Several times a day Check the washing brush
under frosty condi-
tions
Daily under frosty Check the interior of the system.
conditions
Daily during frost, only Check tool holders.
with antifreezing cir-
Clean the sieve.
culation
Clean the frost protection pump filter.
After 160 operating Check antifreeze water quantity
hours or monthly
Disconnection from system (option)
For disconnection from the water supply, the system is
supplied with water from a float tank with downstream
booster pump.
Pressure booster pump
1
Shutting down
1. Turn the power switch to "0/OFF".
Shutdown in the case of potential frost
Shut down a system without frost protection (see "Shut-
ting down" chapter).
For a system with frost protection:
1. Leave the trigger at position "1".
2. Lock the washing station in the "Washing" menu
item of the control.
Shutting down
If there is no danger of frost during the shutdown period:
1. Close off the water supply.
2. Switch off the power supply.
Shutdown in the case of potential frost
Perform the following additional steps in the case of po-
tential frost:
Frost protection ball tap with sieve
1
Frost protection float tank
2
Frost prot. pump
3
Frost protection pump filter
4
Frost protection with lost water
If there is a risk of frost, fresh water flows through the
cleaning tools and their supply lines, thus protecting
them from freezing. The water is then discharged into
the waste water system.
The presence of the frost protection solenoid valve indi-
cates that the system is equipped with this frost protec-
tion version.
Maintenance work before and after the frost period
system, the work must also be performed annually be-
fore the frost period begins. The maintenance work de-
Performed
Clean the filter and re-insert.
Check for dirt and ice and lock the brush wash if necessary.
Is the hot air fan operating?
Is the setting of the thermostat controller (warmer than -10 °C - level "I", colder than -
10 °C - level "II")?
Is the frost protection float container outlet free?
See the section "Care and maintenance/Cleaning the sieve".
Clean the filter and re-insert.
Minimum value: approx. 0.5 l/min per washing tool (the tool with the lowest flow rate
is decisive).
Water quantity lower for antifreezing circulation: Clean the frost protection pump
filter, clean the sieve (on the frost protection ball tap), flush the line.
Water quantity higher for all tools: Regulate the water quantity using the frost pro-
tection ball tap.
Water quantity only higher at the high-pressure gun: Replace the connecting
piece in the high-pressure gun.
WARNING
The high-pressure gun can move uncontrollably and cause injuries if the frost
protection water volume is too high.
Do not fail to replace the connecting piece in the high-pressure gun if the frost protec-
tion water quantity is too high.
1. Empty all float containers.
2. Unscrew the hoses at the float containers and allow
them to drain completely.
3. Unscrew the hoses from the high-pressure pump
and allow the water to drain.
4. Unscrew the high-pressure hose from the pump
head and allow the water to drain.
5. Remove the detergent canister and store it in a
frost-protected place.
In case of doubt, have the maintenance performed by
Customer Service.
Additionally for the WSO attachment kit
1. Remove the RO membranes and store them in a
frost-protected place.
2. Empty the permeate buffer tank.
3. Flush the system (without base exchanger) with an-
tifreeze solution.
4. Rinse the base exchanger with concentrated salt
solution.
5. Blow out all parts containing water with oil-free com-
pressed air.
Note
During longer breaks in operation, the system, with the
exception of the base exchanger, must be flushed with
antifreeze solution to protect it from corrosion.
In case of doubt, have the shutdown performed by Cus-
tomer Service.
English
Frost protection solenoid valve
1
Frost protection ball tap
2
scribed in the "Maintenance and care" chapter must
also be performed in winter.
By whom
Operator
Operator
Operator
Operator
Operator
Operator
Operator
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