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Switch-off in case of emergency
Switch off the system. Pull the mains plug.
Switching on the plant
Switch on the ON/OFF switch.
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 S4.1.
Backwash
During backwash, the dirt collected in the
filament filter is removed. To do this, the fil-
ament filter is rinsed in the reverse direc-
tion. The rinsed dirt is routed to the sludge
collector of the recycling system.
Note
During normal operations, the back-
–
wash 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 auto-
matically by the emergency fresh water
supply (option).
The backwash operation will be repeat-
–
ed every 24 hours after the execution of
the first backwash. The backflushing
time is set by customer service - the
backflushing process is then performed
every day at this time.
Backwashing as required
The WRP 3000 Comfort also features a
–
filter cleaning function that works ac-
cording to the requirements. The filter is
cleaned automatically when it is con-
taminated to a degree that filling the re-
cycled water tank takes more than 15
minutes (30 minutes for 2 tanks).
This automatic cleaning can also be
–
started during a wash in a very busy
washing operation with consequential
filter contamination. The water required
by the washing system is then supplied
by the residual water in the recycled
water tank or, if necessary, via the fresh
water backfeed (if installed). This is a
normal and intended operrating state.
In extremely busy washing operations,
–
filling may take more than 15 minutes
because of the high amount of water re-
quired by the system. The automatic
activation of the next filter cleaning is
therefore blocked for 1.5 hours after the
filter has been cleaned. This prevents
unnecessary filter cleaning cycles. Dur-
ing this time, the filter capacity drops -
even with highest contamination load-
ing of the filter - only to the extent that
there is still sufficient recycled water for
washing processes.
During the backwashing process, indicator
lamp "Backwash" is illuminated.
Duration: Approximately 7 minutes
14
Emptying the pump basin
Turn the rotary button "Empty pump ba-
–
sin" to "MAN" position to route the recy-
cled water via the WRP 3000 Comfort
and the recycled water tank from the
pump basin into the canal.
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:
Actuate the button once (rotate to MAN
and release it).
The WRP 3000 Comfort filters until the
–
S4.2 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 S4.1 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 no overflow line th the channel.
Conductivity monitoring
Monitoring the recycled water conduc-
–
tivity automatically is an option of the
WRP 3000 Comfort.
The measuring point is in the recycled
–
water tank.
Conductivity monitoring can be activat-
–
ed (AUTO) or deactivated (OFF) at the
rotary switch "Automatic conductivity
monitoring".
When a value of 3000 μS/cm is exceed-
–
ed, conductivity monitoring triggers the
same process as the "Empty pump ba-
sin" 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.
Recycling water recirculation
If the washing system does not use up the
water, the recycled water is circulated by
means of gravity to avoid foul odour. If a
gravity circulation is not possible (e.g. if the
technical room is below the system), the
circulation pump upgrade kit is required.
3
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EN
Frost protection
The plant must be operated in frost-free
rooms. During frost, put the system out of
operation and remove all traces of water:
Pull out the hoses.
Let the system dry-run.
Shutdown
Note
To avoid odour problems, the plant must
remain switched on even during the night.
Switch off the ON/OFF switch.
If there is risk of frosting, then any exist-
ing water traces must be removed (see
section "Anti-freezing").
Restarting
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 0.05 MPa (0.5 bar) dur-
ing filter operation.
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