Never suck in liquids which contain sol-
vents like lacquer thinner, petrol or oil. The
spray mist of solvents is highly inflamma-
ble, explosive and poisonous.
Connect suction hose (minimum diame-
ter 3/4") with filter (accessory) to the
water connection point.
Set dosing value for detergent to "0".
Remove air from appliance before oper-
ation.
Deaerating the appliance
Unscrew nozzle screws and remove the
nozzle.
Start the engine according to the oper-
ating instructions of the engine manu-
facturer.
Press the lever on the trigger gun many
times.
Switch on the appliance and let it run
until the water exiting from the spray
pipe is bubble-free.
Switch off the appliance and fit the noz-
zle again.
Operation
DANGER
Risk of explosion!
Do not spray flammable liquids.
DANGER
Risk of injury! Never use the appliance
without the spray lance attached. Check
and ensure proper fitting of the spray lance
prior to each use. The screw connection of
the spray lance must be finger-tight.
Risk of injury! Hold the hand spray gun and
the spray pipe firmly with both hands.
Risk of injury! The trigger and safety lever
may not be locked during the operation.
Risk of injury! Contact Customer Service if
the safety lever is damaged.
Risk of injury from high-pressure water jet.
Slide the safety catch on the trigger gun for-
ward before performing any work with the
appliance.
DANGER
– The device generates a high noise lev-
el. Risk of hearing impairment. Always
use proper hearing protection while
working with the device.
– Never direct the water jet on to persons,
animals, the appliance itself or electrical
components.
– The operator must wear proper safety
gear to be protected against the water
sprays.
– Pay attention to ensure that all screws
of all connecting hoses are tightened
properly.
Opening/closing the trigger gun
To open the trigger gun: Actuate the
safety lever and trigger.
To close the hand spray gun: Release
the safety lever and trigger.
Starting the machine
Open the water supply.
Start the motor with the trigger gun
open according to the operating instruc-
tions of the motor manufacturer.
Note:
The spray lance can be removed to facili-
tate the start-up process.
Allow motor to warm up for 1 minute.
Release the trigger gun. To do so, push
the safety catch towards the back.
Open the hand spray gun.
Set working pressure and flow rate
HD 9/21 G
Set the working pressure and quantity
by turning the pressure/ quantity regula-
tion mechanism at the pump unit.
HD 9/23 G
Set (+/-) the working pressure and
quantity by turning the pressure/ quan-
tity regulation mechanism at the hand
spray gun.
DANGER
When adjusting the pressure/quantity regu-
lation, make sure that the screw connection
of the spray lance does not become loose.
Replace the nozzle
DANGER
Switch the appliance off prior to replacing
nozzel and activate hand spray gun until
device is pressureless.
– 5
EN
19