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English Operating Instructions HD 645 / HD 650 (SX) / HD 658 / HD 690 (SX)
22
Troubleshooting
Danger!
Before any repair work is undertaken,
switch the cleaner off and pull out the
power plug. Have electrical
components checked and repaired
only be authorised Customer Service
personnel.
For faults which are not identified in
this chapter, or when in doubt or
when expressly instructed to do so,
consult authorised Customer Service
personnel.
Cleaner does not work
Check mains voltage.
Check connecting cable for damage.
If the motor has overheated, let the
cleaner cool down. Then switch it on
again.
Consult Customer Service if there is an
electrical fault.
Cleaner does not come up to
pressure
Set nozzle to “high pressure”.
Clean nozzle or replace with new one.
Clean strainer at the water connection.
Evacuate air from the cleaner.
Check water inlet volume (see Technical
Specifications).
Check all supply lines to the pump for
leaks or obstructions.
Seek the help of Customer Service if
necessary.
Pump is leaky
Three drops per minute are allowable
and can appear on the underside of the
cleaner. Seek the help of Customer
Service if leaks are more serious.
Pump makes a knocking
noise
Check all supply lines as well as the
detergent system for leaks.
Evacuate air from the cleaner.
Seek the help of Customer Service if
necessary.
Detergent is not being drawn in
Set nozzle to “low pressure”.
Check detergent suction hose with filter
for leaks or obstructions and clean it if
necessary.
Clean/renew non-return valve in
detergent suction-hose connection.
Open detergent metering valve or check
it for leaks/remove obstruction. Also
clean venting orifice in the cap.
Tip the cleaner backwards over the
wheels. Empty the detergent reservoir
and rinse it out.
Seek the help of Customer Service if
necessary.
Spare parts
You will find a list of spare parts at the end
of these operating instructions.
!
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