Initial startup
Installation of HD...M St
DANGER
Danger of injury from electric shock
Only allow authorised technical specialists to install the
water supply, electrical connections and high-pressure
network.
Ambient conditions
● Dry, frost-free environment.
● No danger of explosion.
● Solid, level floor or wall of sufficient loading capacity.
● Do not install in the vicinity of residential spaces or
offices (noise emission).
● Accessibility for maintenance work.
● Water drain at installation location.
Fastening the device
Note
Screws and dowels for fastening the holder are not pro-
vided in the scope of delivery. The must be selected to
suit the requirements of the installation location and
must be procured separately. Required screw diameter
of 6...8 mm.
DANGER
Risk of injury from a falling device
Take the weight of the device and the loading capacity
of the installation location into account when selecting
the fasteners.
Figure B
Wall mounting
1
Floor installation
2
Mounting opening
3
Holder
4
1. Mark the mounting holes on the wall or floor using
the drilling template.
2. Drill the holes.
3. Attach the holder but only tighten the screws lightly.
4. Adjust the holder clearance by turning with an open-
end wrench.
5. Tighten the fastening screws.
6. Mount the device.
Electrical connection
DANGER
Risk of injury from electric shock
Use a plug to connect the device to the mains grid. Per-
manent connection to the mains grid is prohibited. The
plug is used for disconnection from the mains.
HD...M St: The power supply used for operating the de-
vice must be able to supply enough power for continu-
ous operation.
HD...M St: All live parts, cables and devices in the work
area must be protected against water jets.
1. Plug the mains plug into the socket.
Water connection
Connection to a water line
WARNING
Health risk from return flow of contaminated water
into the drinking water network.
Observe the regulations of your water supply company.
According to applicable regulations, the device must
never be used with the drinking water network without a
system separator. Use a system separator from
18
KÄRCHER or a system separator as per EN 12729
Type BA. Water that has flowed through a system sep-
arator is classified as undrinkable. Always connect the
system separator to the water supply and never directly
to the water connection on the device.
1. Check the feed pressure, input temperature and in-
put amount of the water supply. See the "Technical
data" section for the requirements.
2. Connect the system separator and water connection
of the device with a hose (minimum length 7.5 m,
minimum diameter 1").
The supply hose is not included in the scope of de-
livery.
3. Open the water inlet.
Suck water from the container
1. Screw the suction hose (order number 4.440-207.0)
and filter (order number 4.730-012.0) onto the water
connection.
2. Vent the device.
Vent the device
1. Unscrew the nozzle from the spray lance.
2. Allow the device to run until the escaping water is
free of air bubbles.
3. In the case of venting problems, allow the device to
run for 10 seconds and then switch it off. Repeat the
procedure several times.
4. Switch off the device.
5. Screw the nozzle back in place.
Only HD...M St: High-pressure installation
The applicable national regulations for permanently in-
stalled high-pressure cleaning systems must be ob-
served.
1. Connect the device to the permanently installed pip-
ing using a high-pressure hose line.
2. Route the permanently installed piping with as few
changes in direction as possible.
3. Route the piping using padded loose and fixed clips
to compensate for pressure and thermal expansion.
4. Minimum line cross-sections:
a Pipelines: Nominal width DN 15 (1/2").
b Hose lines: Nominal width DN 6.
DANGER
Risk of injury from the high-pressure water jet
Never fasten the trigger and safety lever in the actuated
position.
Do not use the high-pressure gun when the safety lever
is damaged.
Push the safety latch of the high-pressure gun forwards
every time before starting work with the device.
Opening/closing the high-pressure gun
1. Opening the high-pressure gun: Actuate the safety
lever and trigger.
2. Closing the high-pressure gun: Release the safety
lever and trigger.
High-pressure operation
The device can be operated in a standing or lying posi-
tion.
Note
The device is equipped with a pressure switch. The mo-
tor only starts up when the high-pressure gun is open.
1. Device with a hose reel: Completely unroll the high-
pressure hose from the hose reel.
English
Operation