Kärcher HD 7/20 G Classic, Manual

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Interrupting operation
1. Close the high-pressure gun to interrupt operation.
2. Open the high-pressure gun to continue operation
again.
3. In case of extended interruptions (several minutes),
switch off the engine.
4. Activate the high-pressure gun until the device is
pressureless.
5. Secure the hand spray gun using the safety lever so
that it doesn’t open accidentally.
Note
When the lever of the high-pressure gun is released, the
engine continues to run at zero speed. The water thus
circulates within the pump and gets heated.When the
cylinder head at the pump has reached the maximum
permissible temperature (65 °C), the therm-valve
opens. Hot water is drained. Cold water will follow and
cool the pump.
Finishing operation
After operating the water using saline water (sea water),
open the high-pressure gun and rinse the device for at
least 2 - 3 minutes using tap water.
1. Set the engine switch to “OFF” and close the fuel
valve.
2. Shut off the water supply.
3. Activate the high-pressure gun until the device is
pressureless.
4. Press the safety lever of the high-pressure gun to
secure the lever of the pistol against being released
accidentally.
5. Remove the water inlet hose from the device.
Transportation
CAUTION
Risk of injury, risk of damage
Be aware of the weight of the device during transport.
1. Place the spray lance with the high-pressure gun on
the hooks.
2. Coil up the high-pressure hose and hang it over the
hook.
3. Push the push handle down, and pull / push the de-
vice.
4. When transporting the device in vehicles, secure the
device against shifting and tipping over.
Storage
CAUTION
Failure to observe the weight
Risk of injury and damage
Be aware of the weight of the device during storage.
Store the device indoors only.
Frost protection
ATTENTION
Frost destroys the device if it is not completely
drained of water.
Store the device in a frost-free location.
If frost-free storage is not possible:
1. Drain excess water.
2. Pump commonly available anti-freeze through the
device.
3. Allow the device to run for a maximum of 1 minute
until the pump and lines are empty.
Note
Use commonly available, Glycol-based vehicle anti-
freeze. Observe the handling instructions of the anti-
freeze manufacturer.
Care and service
ATTENTION
Danger due to device inadvertently starting up
Risk of injury
Switch off the engine switch and remove the spark plug
connector prior to all work on the device.
CAUTION
Hot surfaces
Risk of injury
Allow the device to cool down prior to all work.
Note
Observe the information on care and service in the orig-
inal instructions for the motor.
Safety inspection/maintenance contract
You can agree on regular safety inspections or close a
maintenance contract with your dealer. Please seek ad-
vice on this.
Maintenance intervals
Each time before use
z
Check the high-pressure hose for damage.
Immediately replace a damaged high-pressure
hose.
z
Check the device for leaks.
3 drops of water per minute are permissible. Contact
Customer Service in the case of more serious leaks.
Weekly
1. Check the oil level of the engine and pump. Contact
Customer Service if the oil is milky (water mixing
with the oil).
2. Clean the water filter, see Chapter
Cleaning the wa-
ter filter
.
After the first 50 operating hours
Replace the oil in the high-pressure pump.
After 100 operating hours
1 Replace the oil in the engine.
2 Carry out maintenance tasks on the engine accord-
ing to the specifications provided in the operating in-
structions of the engine.
Every 500 operating hours, at least once annually
Have the device maintained by Customer Service.
Maintenance work
Cleaning the water filter
1. Shut off the water inlet.
2. Unscrew the filter cup.
Illustration D
1
Water filter
2
Filter QXW
3
Filter chamber
3. Pull the filter insert downwards and off.
4. Clean the filter insert and filter cup.
5. Re-install the filter insert.
6. Screw on the filter cup again and tighten.