![background image](http://html1.mh-extra.com/html/karcher/hd-1090/hd-1090_operation-manual_3836368006.webp)
7
1. Starting
Note:
If you are using an extension cable, it should
always be completely unwound from the cable
drum and have a sufficient cross-sectional
area:
25 ft: 12 AWG, 50 ft: 10 AWG
(10 m = 1.5 mm², 30m = 2.5 mm²)
1.5
Connecting the water supply
•••••
See technical data for connected values.
•••••
Connect a water supply hose (not supplied) to
the appliance and the water pipe.
Note:
Dirt in the feed water could lead to the appliance
being damaged. To avoid this risk, we
recommend fitting a filter.
A suitable filter with 1" connection is available
under Order No. 2.638-270.
Suction
Observe the following if you are drawing water
from an open container:
– Attach a suction hose with filter (order no.
4.440-238) directly to the appliance.
– Allow the pump to operate without the high-
pressure hose until water appears at the high-
pressure outlet without any more bubbles.
– Then re-attach the high-pressure hose.
1.6
Purpose
•••••
Use the appliance to clean machines, vehicles,
buildings, tools, etc.
•••••
Clean facades, patios, garden implements,
etc. with the high-pressure spray only, i.e.
without detergent. We recommend the dirt
blaster, a special accessory, for stubborn dirt.
•••••
Engines must only be cleaned in places which
have appropriate oil traps (protection of the
environment).
•••••
If the machine is used at petrol stations or in
other hazardous areas, the appropriate safety
1.1
Unpacking the unit
•••••
If, while unpacking, you discover damage has
been caused in transit, please inform your
dealer immediately.
•••••
Do not simply discard the packing materials
with the house-hold waste. Take the packing
materials to the appropriate collection areas
for recycling.
1.2
Assembling the accessories
•••••
Attach the handle to the unit with the supplied
screws.
Note:
If the handle is too low for you, you can
change the height as follows:
– Remove the handle and hood.
– Unscrew the fastening nut for the detergent
tank and remove the tank.
– Unscrew the carry bar from the motor unit
(three screws) and remove to the rear.
– Turn over the carry bar so that the top and
bottom are interchanged.
– Screw the carry bar back onto the motor
unit using the three new fastening holes.
This way, the carry bar is about 85 mm
higher.
– Reattach the detergent tank, hood and
handle.
1.3
Checking the oil level
•••••
Unscrew both fastening screws from the left
and right side of the hood and remove the
hood.
•••••
Cut off the tip of the oil tank cap.
•••••
Check the oil level in the oil tank.
1.4
Connecting the power supply
•••••
See technical data of connected values.
•••••
Check whether the voltage shown on the
rating plate corresponds to that of the power
source.