Kärcher HDS 645-4 M Basic Betriebsanleitung Seite 26

Indicator lamp "Ready for use"
turns off
Figure 2 - Pos. 6
– Engine overload/overheat
Turn device switch on "0" and let engine
cool off for min. 5 minutes.
If malfunction still occurs, have device
checked by customer service.
No line voltage, see "Appliance is not
running".
Indicator lamp liquid softener glows
Figure 2 - Pos. 4
– Liquid softener tank is empty, due to
technical reasons a remainder stays in
the tank.
Refill.
– Electrodes in the tank are dirty
Clean the electrodes.
Engine control lamp glows
Figure 2 - Pos. 5
Set the appliance switch to "0".
Allow device to cool down.
Set the appliance switch to "I".
Appliance is not running
– No power
Check power connection/conduit.
Device is not building up pressure
– Air within the system
Vent pump:
Set dosing value for detergent to "0".
With open hand spray gun turn device
on and off multiple times with the device
switch.
Close and open the regulating spingle
(figure 7) with open hand spray gun.
26
English
Note
By dismantling the high pressure hose from
the high pressure connection the venting
process is accelerated.
If detergent tank is empty, refill.
Check connections and conduits.
– Pressure is set to MIN
Set pressure to MAX.
– Sieve in the water connection is dirty
Clean sieve.
Clean the fine filter; replace it, if neces-
sary.
– Amount of water supply is too low.
Check water supply level (refer to tech-
nical data).
Device leaks, water drips from the
bottom of the device.
– Pump leaky
Note
3 drops/minute are allowed.
With stronger leak, have device
checked by customer service.
Device turns on and off while hand
spray gun is closed
– Leak in the high pressure system
Check high pressure system and con-
nections for tightness.
Device is not sucking in detergent
Leave device running with open deter-
gent dosage valve and closed water
supply, until the swimmer tank is sucked
empty and the pressure falls to "0".
Open the water supply again.
If the pump still is not sucking in any deter-
gent, it could be because of the following
reasons:
– Filter in the detergent suck hose dirty
Clean filter.
– Backflow valve stuck