Operation - Kärcher IB 7/40 Classic Manual

Handle (accessory)
The handle can be fastened on the exten-
sion piece.
Working light (accessory)
The working light is connected between the
jet pistol and the nozzle. Switching on and
switching off is described in the chapter
"Operation/Basic Settings".
Connect compressed air supply
NOTICE
To ensure smooth functioning of the ma-
chine, the compressed air must have a low
moisture content (max. 5% relative humidi-
ty, dewing point below 0°C). The com-
pressed air must also be free from oil, dirt
and foreign particles.
The compressed air must at least comply
with the air quality conditions of ISO 8573,
Class 3.
 Close pressure relief valve.
 Connect the compressed air inlet pipe
to the compressed air connection point
of the device.
The maximum permissible supply pres-
sure of 1 MPa (10 bar) must not be ex-
ceeded.
Establish mains contact
DANGER
Risk of electric shock.
The socket to be used must have been in-
stalled by an electrician and be compliant
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 operate a ma-
chine with damaged cables. Get the dam-
aged cables replaced by an electrician.
The extension cord must be protected by
IPX4 safety mechanism and the cables
must at least be compliant with H 07 RN-F
3G1.5.
 Insert the mains plug into the socket.

Operation

Filling dry ice
DANGER
Risk of cold burns. Dry ice has a tempera-
ture of -79 °C. Never touch dry ice or cold
parts of the machine without appropriate
protection. Wear protective gloves and pro-
tective overalls.
 Open the cover of the dry ice container.
 Check the dry ice container for pres-
ence of foreign particles and conden-
sate, 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 war-
ranty coverage.
 Close the cover of the dry ice container.
NOTICE
To avoid disruptions in operations on ac-
count 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 con-
tainer 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 direc-
tion.
 Increase/reduce the jet pressure by us-
ing 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-clockwise
and remove the key.
The automatic closure of the key hole
will prevent contamination during oper-
ation.
When the key is removed, the device is
protected against changes to the set-
tings and resetting the statistics values.
Operation
 Carry out maintenance jobs "daily be-
fore starting work" (see section "Mainte-
nance and Care").
DANGER
Risk of injury on account of flying dry ice
pellets. Do not direct the jet pistol on per-
sons. Keep third persons away from the
place of use and when the machine 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.
4
-
EN
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 prevent
persons coming close to the machine
when it is being operated.
DANGER
Risk of suffocation on account of carbon di-
oxide. The dry ice pellets are made of solid-
ified carbon dioxide. The carbon dioxide
content in the air at the place where the ma-
chine is used will increase when the ma-
chine is running. Ensure adequate ventila-
tion 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 per-
haps 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 man-
ufacturer of dry ice.
DANGER
There is a danger because of dangerous to
your health materials. If dust that is danger-
ous to your health can be generated, the
appropriate safety measures will have to be
taken prior to beginning work.
DANGER
Risk of explosion!
Do not work on light metals and iron-con-
taining substances simultaneously.
If you alternate between working on light
metals and iron-containing parts, the work
area and the suction device must be
cleaned between work cycles.
 Ensure adequate ventilation while
working in closed rooms in order to
keep the carbon dioxide concentration
in the atmospheric air in the room below
the danger level.
 Attach the object to be cleaned if neces-
sary.
Danger
Risk of injury on account of electro-static
discharge; risk of damage to the electronic
components. The object being cleaned can
get charged electrically during the cleaning
process. Provide suitable earthing for the
object being cleaned and ensure that the
earthing remains intact during the entire
cleaning process.
WARNING
Risk of damage by foreign objects falling
into the dry ice container. Keep cover of the
dry ice container closed during operation.
 Connect the grounding rope (with IB 7/
40 Advanced only) electrically conduc-
tive with the cleaning object or ground
the cleaning object in a different way.
 Wear safety gear, safety gloves, close
fitting safety goggles and ear-protec-
tion.
15