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- 10
DANGER
Risk of accident while working on the unit.
During all tasks
First switch-on in voltage-less state,
switch off the emergency stop switch
and secure it against being switched on
again.
Shut off water supply.
– Operator
Work designated with the sign “Opera-
tor” may only be carried out by persons
who have been instructed in the safe
operation and maintenance on the
wash plant
– Customer Service
Work designated with the sign “Cus-
tomer Service” may only be done by the
fitters of Kärcher Customer Service or
fitters who have been authorised by
Kärcher.
There are indicator lamps in the switching
cabinet that display
– Adding fresh water and
– faults
.
Troubleshooting
Who may remedy faults? Fault indication
Fault Possible cause Remedy By whom
Indicator Lamp
"Fault" illuminates
Motor protection switch of the immersion
pump has been triggered.
Reset motor protection switch; call Customer Ser-
vice if the problem recurs.
Operator
Float switch S15 in pump basin is defective Repair or replace float switch. Customer Ser-
vice
Recycling water container empty. see below
Message “Recycling
water container emp-
ty” is lit up on the
washing bay.
Water level in the pump basin is too low and
emergency fresh water supply has failed
Refill pump basin; check emergency fresh water
supply; repair, if required.
Operator, Cus-
tomer Service
Immersion pump has failed, is dirty or defec-
tive
Restart the plant by switching off and on; otherwise
call Customer service
Operator
Pipe connections are leaky Check all pipe connections; seal them, if required Operator, Cus-
tomer Service
Float switch S11 is defective or loose Replace the float switch or reattach it Customer Ser-
vice
Controls are defective Check, repair or replace controls Customer Ser-
vice
Incorrect advance pressure in the hydrocy-
clone
Read the pump pressure; if below 0.60 MPa,
check, clean, and if necessary, replace the immer-
sion pump and pipelines.
Customer Ser-
vice
Outlet of the hydrocyclone clogged Check the outlet of the hydrocyclone, clean as nec-
essary.
Customer Ser-
vice
The fresh water hand valve for the adjust-
ment of the fresh water volume is closed.
Open and adjust the fresh water hand valve. Operator
Pre-filter clogged. Check pre-filter and clean if necessary. Operator
Plant out of order Programme selection switch in wrong posi-
tion.
Turn the programme selector switch to the position
"Operation without conductivity monitoring or "Op-
eration with conductivity monitoring" and press the
SET key.
Operator
Power supply is interrupted Check power supply and ensure proper supply. Operator
Controls are defective Check, repair or replace controls Customer Ser-
vice
Recycled water is
coloured or is foam-
ing too much
Sediment basin or pump basin contaminat-
ed
Emptying and cleaning the basins Operator/ Dis-
posal agency
Outlet of the hydrocyclone clogged Check the outlet of the hydrocyclone, clean as nec-
essary.
Operator, Cus-
tomer Service
Improper detergents are used in the wash-
ing unit or washing hall
Use compatible detergents; rin
se the system, if
necessary
Operator, Cus-
tomer Service
Detergent dosing in the washing unit is too
high
Check detergent dosing; reset, if necessary Operator, Cus-
tomer Service
Washing place cleaned with incompatible
detergents
Replace water and rinse the basins Operator
Water in the recycling
water container has
an unpleasant odour
WRP was switched off during the night or
over the weekend
WRP must be ON continuously Operator
none or very poor circulation, very little ven-
tilation
Turn the rotary switch of the circulation pump to po-
sition "III".
Check if the circulation valve is open.
Operator
Check pipes for dirt and damage; clean or replace
them as required
Operator, Cus-
tomer Service
Check the ventilation, the ventilator must clearly
bubble in the pump basin.
Operator, Cus-
tomer Service
23EN
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