Karcher Système de recyclage des eaux usées WRP 16000 - Manual (Page 15)

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Switch off the plant, turn the emergency
stop main switch in the electrical switches
cabinet to "0".
 Turn the emergency-stop switch to "1".
Immersion pump is working when:
– a backwash is performed.
– The water level in the recycled water
tank is below the starting level S7.
– The water level in the pump basin is
above the starting level S15.
 Turn the programme selector switch to
the desired position.
 Press the SET key.
Note
After the switching on of the emergency off
switch, the system will start in the mode
"Operation without conductivity monitor-
ing“.
During backwash, the dirt collected in the
gravel filter is removed. To do this, the
gravel filter is rinsed in the reverse direc-
tion. The rinsed dirt is routed to the sludge
collector of the recycling system.
The system is equipped with an automatic
multi-channel valve. The backwash pro-
cess is automatically started by the control.
During the backwashing process, indicator
lamp "Backwash running" is illuminated.
Note
During normal operations, the backwash is
performed once a day. During backwash,
the recycled water tank is not refilled with
recycled water. If the washing system is not
operated during backwash, then refilling is
done automatically by the emergency fresh
water supply (option).
The WRP machine has an on-demand
backwash function. If the filling of the recy-
cled water tank takes more than 90 minutes
on account of a highly contaminated filter,
an automatic backwash is initiated.
This automatic filter backflushing can also
be started during a wash in a very busy
washing operation with consequential filter
contamination.
The water demand of the washing system
is ensured via the fresh water supply (op-
tion).
– With this function, the recycled water is
channeled from the pump basin into a
channel.
– This function is required when the qual-
ity of the recycled water proves insuffi-
cient for operating the awashing system
(too much salt in the water or wrong
cleaning agent, for example).
Function:

Turn the programme selector switch to
position "Pump basin".
 Press the SET key.
– The system filters until the S15 switch in
the pump basin signals lack of water
and the submersion pump is switched
off.
– This overfills the recycled water tank.
The excess water flows though the
overflow pipe of the recycled water tank
into the canal.
– The water supply of the washing sys-
tem now runs with fresh water until the
pump basin is filled up to level S15 at
the top, and the deactivation of the sub-
merged pump is cancelled.
– Recycled water can then be produced
in the normal way.
– KÄRCHER Service deactivates the
"Draining the pump basin" function if
there is an overflow line from the pump
basin into the channel.
– KÄRCHER Service deactivates the
"Draining the pump basin" function if
there is no overflow line from the recy-
cled water tank into the channel.
– The unit is equipped with the option of
an automatic monitoring of the conduc-
tivity.
– The measuring point is located in the
pump line between the submersion
pump and the multi-channel valve.
– This conductivity monitoring function
can be activated or deactivated here.
– When the preset value for the conduc-
tivity is exceeded, the conductivity mon-
itoring triggers the same process as the
"Empty pump basin" button.
– The subsequent utilization of fresh wa-
ter for the washing process dilutes the
remaining salty water in the basin sys-
tem to an extent that adequate washing
water quality is restored.
– This option cannot be installed if the re-
cycling system is not equipped with an
overflow from the recycled water tank
and a fresh water supply.
If the washing system does not use up the
water, the recycled water is circulated to
avoid foul odour.
The plant must be operated in frost-free
rooms. During frost, put the system out of
operation and remove all traces of water:

Loosen the screws of the plastic pipes
and let the pipes run empty.
 Empty the recycled water tank.
 Open the gravel filer and remove the
gravel that is still moist (Customer Ser-
vice)
Note
To avoid odour problems, the plant must
remain switched on even during the night.

Switch off the plant, turn the emergency
stop main switch in the electrical switch-
es cabinet to "0".
 If there is risk of frosting, then any exist-
ing water traces must be removed (see
section "Anti-freezing").
During fresh start-up after shutdown:

Switch on plant.
 Backwash the filter until the manometer
on the multi-channel valve displays an
inlet pressure of approx. 0.05 MPa (ap-
prox. 0.5 bar) during filter operation.
Switch-off in case of emergency
Switching on the plant
Select function
Backwash
Empty pump basin
Conductivity monitoring
Recycling water recirculation
Frost protection
Shutdown
Restarting
15 EN