Troubleshooting - Kärcher HD 994 Instruction Manual

Operating Instructions HD 994... / HD 1094... / HD 1294...
Annually or after 500 operating
hours
n
Change the oil
– For oil quantity and type see Technical
Specifications.
– Loosen the fastening screws, remove
the hood, unscrew the oil drain plug on
the side of the motor housing (on the left
if viewed from the front).
– Lay cleaner on its side and drain oil into
a suitable container.
– Fill slowly with fresh oil; air bubbles have
to escape.
As and when required
n
Emptying and cleaning the detergent tank
– Unscrew the fastening screws for the
hood.
– Remove the hood.
– Pull out the screw cap and hose for the
detergent tank
– Unscrew the fastening nut for the
detergent tank and remove the tank.
– Emptying and cleaning the detergent
tank

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.
20
Cleaner does not work
n
Check mains voltage.
n
Check connecting cable for damage.
n
If the motor has overheated, let the cleaner
cool down. Then switch it on again.
n
Consult Customer Service if there is an
electrical fault.
Cleaner does not come up to
pressure
n
Set nozzle to "high pressure".
n
Clean nozzle or replace with new one.
n
Clean strainer at the water connection.
n
Evacuate air from the cleaner.
n
Check water inlet volume (see Technical
Specifications).
n
Check all supply lines to the pump for leaks
or obstructions.
n
Seek the help of Customer Service if
necessary.
Pump is leaky
n
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
n
Check all supply lines as well as the
detergent system for leaks.
n
Evacuate air from the cleaner.
n
Seek the help of Customer Service if
necessary.
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