![background image](http://html1.mh-extra.com/html/karcher/620-m/620-m_manual_3539317007.webp)
7
Monthly or as Required
·
Clean the filter in the detergent tank.
·
Clean the high-pressure nozzle.
Remove dirt from the nozzle hole with a needle
and then rinse out with water from the front.
·
Clean the strainer in the water connection. It can
be easily removed with a flat-nosed pliers.
Note:
Disconnect the appliance from the power mains
before all repair work.
Only authorized customer service personnel may
inspect electrical components.
In this chapter, we would like to give you some hints
on dealing with malfunctions yourself.
In all other cases or in the case of electrical faults,
please contact the authorized customer service.
Appliance does not Work
·
Check whether the voltage shown on the rating
plate corresponds to that of the power source.
·
Check the connector cable for damage.
·
If the motor overheats, allow it to cool down for a
few minutes. Then switch back on again.
Appliance does not reach Operational
Pressure
·
Set the spray wand to the maximum working
pressure.
·
Ventilate the appliance.
·
Clean the strainer in the water connection.
·
Check the inlet water flow rate.
·
Check all inlet pipes to the pump for leaks or
block-age.
4. Troubleshooting
Strong Pressure Fluctuations
·
Clean the high-pressure nozzle. Remove dirt from
the nozzle hole with a needle and then rinse out
with water from the front.
Pump Leaks
·
3 drops per minute are permissible. In the case of
more serious leakage, you should contact the
authorized customer service.
No Detergent Suction
·
Set the spray wand to the minimum working
pressure.
·
Clean the filter in the detergent tank.
·
Clean the ventilation hole in the cover of the
detergent tank.
3. Care and Maintenance
Frost Protection
·
Frost will destroy an appliance which has not been
completely emptied of water. Ideally, the
appliance shold be stored in a frost-free room.
Should you require customer service, call 1–800–537–4129.