Kärcher HDS 3.0/20-4 EA/EG Mode D'emploi page 14

PREVENTIVE MAINTENANCE AND SERVICE
Unloader Valve
WARNING: The unloader valve on this pressure
washer has been factory set and sealed and is a field
nonadjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty.
Burner Fuel Filter
Drain any water which has accumulated in fuel filter and
clean or replace element as needed.
Heating Coil
Coil Descaling: In hard water areas, scale buildup within
the heating coil will occur. Scale deposits will decrease
the water temperature rise and may eventually clog the
heating coil. Contact your local service center when
descaling is needed.
Coil Desooting: Poor grades of fuel oil or inadequate
combustion air will cause heavy soot buildup on the
outside surface of the heating coil. These deposits will
insulate the coil. This will restrict the air flow through the
coil, further aggravating the soot buildup. Contact your
local service center when desooting is needed.
Relief Valve
WARNING: The relief valve on this pressure washer
has been factory set and sealed and is a field
nonadjustable part. Tampering with the factory setting
may cause personal injury and/or property damage,
and will void the manufacturer warranty.
If pressure from pump exceed safe limits, the relief valve
will open, allowing high pressure to be discharged through
hose to ground.
Caution: Inspect relief valve annually for any
obstruction.
TROUBLESHOOTING
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3
1. Ready for use: indicator lamp
2. Fuel indicator lamp
3. Indicator lamp service
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4. Indicator lamp system care
2
4
Operating Manual HDS Standard 9.808-214.0
DANGER: Risk of injury by inadvertent startup of
appliance and electrical shock.
First pull out the plug from the mains before carrying
out any tasks on the machine.
Indicator Lamp "Ready For Use" Turns OFF
No line voltage, see "Appliance is not running".
Indicator Lamp Service
Indicator lamp service will be illuminated
Lack of oil
• Replenish oil.
1x blinking
Water shortage
• Check water supply, check connections.
Leak in the high pressure system
• Check high pressure system and connections for
tightness.
2x blinking
Fault in the voltage supply or current pickup of the motor
too high.
• Check main connections and mains fuse.
• Inform Customer Service
3x blinking
Motor overload/overheat
• Set the appliance switch to "0/OFF".
• Allow device to cool down.
• Turn on the appliance.
Error occurs repeatedly.
• Inform Customer Service
4x blinking
The exhaust temperature limiter has been triggered.
• Set the appliance switch to "0/OFF".
• Allow device to cool down.
• Turn on the appliance.
Error occurs repeatedly.
• Inform Customer Service
5x blink
Obstructed reed switch in the lack of water fuse or
magnetic piston stuck.
• Inform Customer Service
Fuel Indicator Lamp Glows
Fuel tank empty.
• Refill fuel.