Kärcher HD 9/21 G, Manual

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– 4
The safety valve opens when the permissi-
ble operating pressure is exceeded (see
Technical Data); water flows outside.
The safety valve is set by the manufacturer
and sealed. Setting only by customer ser-
vice.
The thermostat valve protects the high-
pressure pump from unacceptable heating
during circuit operation when the trigger
gun is closed.
The thermostat valve opens when the per-
missible water temperature of 80°C is ex-
ceeded and lets out the hot water into the
open.

DANGER
Risk of injury! Device, tubes, high pressure
hose and connections must be in faultless
condition. If they are not in a perfect state
then the appliance must not be used.
Figure 3, see cover page
 Fasten the push handle by means of
the fastening screws.
Note: The EASY!Lock system joins com-
ponents with a quick-fasten thread solidly
and securely with just one turn.
 Insert the high pressure nozzle onto the
spray lance.
 Install union nut and hand-tighten it
(EASY!Lock).
 Join the spray lance with the trigger gun
and tighten until hand-tight
(EASY!Lock).
 Tighten the screw connection of the
spray lance finger tight.
 Join the high-pressure hose with trigger
gun and high-pressure connection of
the appliance and tighten until hand-
tight (EASY!Lock).
 Check oil level of the high pressure
pump at the oil sight glass.
Do not operate the device if the oil level has
fallen below the middle of the oil sight
glass.
 Add oil if required (see technical speci-
fications).
 Before using for the first time, cut off the
tip of the lid of the oil tank on the water
pump.
Follow the instructions given in the sec-
tion "Safety Notes"!
 Read the operating instructions of the en-
gine manufacturer before start-up and fol-
low the safety instructions carefully.
 Check oil level of the engine.
Do not operate the appliance if the oil
level has fallen below "MIN".
 If required, top up oil carefully.
 Fill the fuel tank with unleaded petrol.
Do not use 2-speed mixture.
E10 fuel may be used.
Safety valve
Thermostat valve
Start up
Installing the pushing handle
Install hand spray gun, spray lance
and nozzle
2.
1.
Check oil level of the high pressure
pump
Motor
20 EN