Kärcher HDS 645-4 M Basic Instruction Manual page 24

Oil change.
Figure 12
Ready a catch bin for appr. 1 Liter oil.
loosen release screw.
Dispose of old oil ecologically or turn in at
a gathering point.
Tighten release screw.
Fill oil slowly up to the MAX marking.
Note: Air pockets must be able to leak out.
For oil type refer to technical specifications.
Troubleshooting
Danger
Risk of injury by inadvertent startup of ap-
pliance and electrical shock.
First pull out the plug from the mains before
carrying out any tasks on the machine.
Fuel indicator lamp glows
Fuel tank empty
–
Refill.
Indicator lamp "Ready for use"
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
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
Set the appliance switch to "0".
Allow device to cool down.
Set the appliance switch to "I".
24
turns off
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.
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 necessary.
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.
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EN