Operating instructions

- 46
Note:
The washing place heating can function
properly provided the washing area has
been built properly according to the
KÄRCHER recommendations.
 Connect the site-supplied pipelines of
the washing station heater to the distrib-
utors in the system .
 Install the external temperature sensor:
– protected from direct sunlight (north of
the equator on the northern hemi-
sphere, south of the equator on the
southern hemisphere),
– protected aginst warm walls,
– protected aginst warm air currents.
1 Locking valve of feeder pipe
2 Filling valve
 Connect the submersion pump to fill the
washing station heater with the fill valve
(on the red distributor).
 Return line from the fill valve to the blue
distributor to the container with the frost
protection solution.
 Open the locking valves of feeder and
return pipes.
 Pump frost protection mixture for a frost
safety for up to -25°C into the system.
 Switch on the floor heating pump (see
Chapter "Manual procedures").
 Perform the filling process until there
are no more bubbles in the return line.
 Close the fill valve for the return line (on
the blue distributor) and fill in more frost
protection until the manometer shows
approx. 1.5 bar.
 Close locking valve of feeder pipe.
 Let the pump of the floor heating run for
at least 15 more minutes.
If necessary, fill in more frost protection
until the manometer shows 1.5 bar.
 Remove the hose; while doing so col-
lect the residual frost protection solution
and dispose of it.
 Check hose and pipe screws for ab-
sence of leakness.
 Adjust the thermostat mixing valve; see
Chapter "Settings/Washing station
heater",
 The oil level in both the high-pressure
pumps must lie between MIN and MAX.
 Cut off tip of oil container.
See section "Filling fuel" in the earlier part
of the Operating Instructions.
Note:
The softening salt is added to the salt tank
while starting up the base exchanger.
Hence, do not fill in any softening salt yet.
 Open the water supply.
1 Deaeration screw
 Deaerate the warm water circulation
pump; loosen first the deaeration screw
and then tighten it again.
 Set main switch to “1”.
1 Deaeration screw
 Deaerate the frost protection circulation
pump; loosen first the deaeration screw
and then tighten it again.
 Inser the overflow hoses of base ex-
changer and salt tank in the drainage
pipe of the building.
 Fill the salt tank with water (approx. 10
cm above top edge of the sieve) Do not
add any salt yet!
 Open the locking valve for fresh water
slowly and wait until the pressure tank
is filled with water.
 Remove the covering lid of the control
valve.
1 Programming knob
 Press the programme button and select
the function "Backwash" by turning the
button in the direction of the arrow.
Water and air escapes through the
drainage connection until the plant is
completely deaerated.
Note:
Restrict backwashing to the absolute mini-
mum because otherwise the sensor meas-
uring cell can get exhausted and this may
necessitate a complete regeneration of the
concerned exchange tank.
 Pull out the suction sieve fitted at the
brine hose from the guide pipes in the
salt tank.
 Press the valve flap (NR1) (directly be-
hind the programming system) using a
screw-driver.
The air closure valve gets filled and air
escapes through the suction sieve.
When air no longer escapes from the
suction sieve, release the valve flap.
 Insert the suction sieve back into the
guide pipes.
 Press the programme button and select
the function "Salt+Wash" by turning the
button in the direction of the arrow.
Water level in the salt tank falls contin-
uously.
Note:
The suction system needs to be deaer-
ated if there is air formation in the air
closure valve before the salt tank is
empty (residual level in the salt tank,
when empty, is approx. 7 cm) and the
ball floating in the air closure glass falls
down.
Connect the washing station heater
and start it up
Check oil level
Filling in detergents
Initial startup
Turning the base exchanger on
Backwash
Regeneration
48 EN