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18 - English
Help with faults
Fault
Cause
Remedy
Unit does not run
Power supply interrupted
Draw out power plug! Check power cord, power
plug, extension cable and cable connections for
damage
Unit does not come up to pressure
Spray lance set to “–”
Set spray lance to “+”
In suction operation – unit not vented
Vent unit, see “Operation”
Strainer in water inlet blocked
Clean strainer, see “Care and Maintenance”
Water supply quantity too low
Check the water supply to the water inlet of the
unit for leaks and throughput
Strong pressure fluctuations
High-pressure nozzle in spray lance blocked
Take off the spray lance, clean the hole in the
high-pressure nozzle with a needle and rinse
through with water again
Water comes out of the housing underside
Pump leaking
3 drops per minute are acceptable. For greater
leakages contact the customer service
Cleaning agent is not drawn in
Spray lance set to “+”
Set spray lance to “–”
Cleaning agent valve in the cleaning agent suction
hose blocked
Clean cleaning agent metering valve, see “Care
and Maintenance”
Faults often have simple causes which you can
rectify yourself with the aid of the following
summary. In case of doubt or of faults or
remedies not mentioned here apply to the
authorized customer service.
!
Danger of electric shock!
Repair work on the unit can only be carried out
by the authorized customer service.
Customer Service
In the case of questions or faults our Kärcher
branches will be pleased to assist you further:
Replacement parts
Use exclusively Kärcher original replacement
parts. You will find a replacement parts summary
at the end of these operating instructions.
Inrush currents cause short-time voltage drops.
Under unfavourable power supply conditions
other equipment may be affected. If the system
impedance of the power supply is < 0,15 Ohms,
disturbances are unlikely to occur.
Summary of Contents for 670 M
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