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3. Care and Maintenance
Monthly or as Required
• Clean the filter on the detergent suction hose.
• Clean the high-pressure nozzle.
Remove dirt from the nozzle hole with a needle,
and rinse with water from the front.
• Clean the strainer in the water connection. It can
be easily removed with a flat-nosed pliers.
Nozzle replacement
• Detach the spray lance from the handgun.
• Unscrew the nozzle holder, using an Allen key
(size 6 A/F) to counter the turning force.
• Bleed the air from the appliance.(
®
Suction 2.)
• Clean the strainer in the water connection.
• Check the inlet water flow rate.
• Check all inlet pipes to the pump for leaks or
blockage.
Strong Pressure Fluctuations
• Clean the high-pressure nozzle. Remove dirt
from the nozzle hole with a needle, and rinse
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 lance to the minimum working
pressure.
• Clean the detergent suction hose with filter, and
check for leaks.
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 the mains voltage.
• 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 lance to the maximum working
pressure.
4. Troubleshooting
• You can now replace the nozzle.
• When you screw the nozzle holder back onto the
spray lance, make absolutely sure that there is
no dirt on the O-rings .
• You can also screw a dirt blaster onto the spray
lance instead of the nozzle holder.
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.
Summary of Contents for HD 500 S Plus
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