Operation - Kärcher IB 7/40 Classic Manual

Handle (accessory)
The handle can be fastened on the ex-
tension piece.
Working light (accessory)
The working light is connected be-
tween the jet pistol and the nozzle.
Switching on and switching off is de-
scribed in the chapter "Operation/Basic
Settings".
Connect compressed air supply
Note
To ensure smooth functioning of the
machine, the compressed air must
have a low moisture content (max. 5%
relative humidity, dewing point below
0°C). The compressed air must also be
free from oil, dirt and foreign particles.
The compressed air must at least com-
ply with the air quality conditions of ISO
8573, Class 3.
Close pressure relief valve.
Connect the compressed air inlet
pipe to the compressed air connec-
tion point of the device.
The maximum permissible supply
pressure of 145 PSI (1 MPa) must
not be exceeded.
Establish mains contact
DANGER
Risk of electric shock.
The socket to be used must have been
installed by an electrician and be com-
pliant with IEC 60364-1.
The machine must have an FI fuse of
type B, 30 mA.
Check the mains cables of the machine
each time before using the machine to
see that it is not damaged. Never op-
erate a machine with damaged cables.
Get the damaged cables replaced by
an electrician.
The extension cord must be protected
by IPX4 safety mechanism.
Insert the mains plug into the sock-
et.

Operation

Filling dry ice
DANGER
Risk of cold burns. Dry ice has a tem-
perature of -79 °C. Never touch dry ice
or cold parts of the machine without ap-
propriate protection. Wear protective
gloves and protective overalls.
Open the cover of the dry ice con-
tainer.
Check the dry ice container for
presence of foreign particles and
condensate, remove them if found.
Fill dry ice pellets into the container.
WARNING
Risk of damage to the device. Use only
dry ice pellets as jet medium. The use
of any other spray agent will lead to
loss of warranty coverage.
Close the cover of the dry ice con-
tainer.
Note
To avoid disruptions in operations on
account of melted dry ice pellets, it
would make sense to fully use up the
contents of the dry ice container before
adding fresh dry ice. If the machine is
to remain idle for a longer time, operate
the device until the dry ice container is
empty or empty the container via the
dry ice emptying function.
Settings
Note
The settings depend on the substances
contained in the detergent and the type
of dirt.
Release emergency-stop button by
turning.
Set the appliance switch to "I".
Turn the keyswitch in a clockwise
direction.
Increase/reduce the jet pressure by
using the respective keys.
Note
The higher you set the jet pressure, so
much greater (more agressive) will the
cleaning effect be.
Increase/reduce the dry ice dosing
by using the respective keys.
Turn the keyswitch counter-clock-
wise and remove the key.
The automatic closure of the key
hole will prevent contamination dur-
ing operation.
When the key is removed, the de-
vice is protected against changes to
the settings and resetting the statis-
tics values.
Operation
Carry out maintenance jobs "daily
before starting work" (see section
"Maintenance and Care").
DANGER
Risk of injury on account of flying dry
ice pellets. Do not direct the jet pistol
on persons. Keep third persons away
from the place of use and when the ma-
chine is being operated (by cordoning
off the area).
Do not touch/hold the nozzle opening
or the dry ice jet when the machine is
running.
First stop the compressed air supply
before disconnecting the jet gun from
the spray agent hose and the spray
agent hose from the device; remove all
pressure from the system and then pull
the plug out of the socket.
Cordon off the working area to pre-
vent persons coming close to the
machine when it is being operated.
DANGER
Risk of suffocation on account of car-
bon dioxide. The dry ice pellets are
made of solidified carbon dioxide. The
carbon dioxide content in the air at the
place where the machine is used will
increase when the machine is running.
Ensure adequate ventilation at the
place of use; if possible, use an alarm
to warn persons. Symptoms of high
levels of carbon dioxide in the air that is
breathed in:
3...5%: headache, faster breathing.
–
7...10%: headache, nausea and
–
perhaps even unconsciousness.
If any of these symptoms occur, please
switch off the machine immediately and
get a breath of fresh air; improve the
ventilation before starting work again
with the machine or use respirators.
Follow the safety specifications of the
manufacturer of dry ice.
DANGER
There is a danger because of danger-
ous to your health materials. If dust that
is dangerous to your health can be
generated, the appropriate safety mea-
sures will have to be taken prior to be-
ginning work.
DANGER
Risk of explosion!
Do not work on light metals and iron-
containing substances simultaneously.
If you alternate between working on
light metals and iron-containing parts,
the work area must be cleaned be-
tween work cycles.
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