Karcher IB 7-40 Advanced - Manual (Page 17)

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 Carry out maintenance jobs "daily be-
fore starting work" (see section "Mainte-
nance and Care").
ƽ 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.
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.
ƽ
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
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 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.
ƽ
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.
ƽ
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.
ƽ 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.
ṇ 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.
 Switch on the compressed air supply.
 Release emergency-stop button by
turning.
 Choose a safe place to stand, assume
a secure body stance to avoid being
thrown off-balance by the recoil pres-
sure of the jet pistol.
In order to prevent the sudden recoil, a
gradual increase of the jet pressure can
be set up (see "Operation/Basic Set-
ting", menu item "soft start").
 Press in the safety knob of the jet pistol.
 Activate the dry ice jet by pressing the
trigger of the jet pistol and carry out the
cleaning operation.
Note
With model IB 7/40 Advanced, the dosing
of dry ice pellets can be switched on or off
via the key dry ice dosing on/off on the jet
pistol. When the dosing is turned off, the
key illuminates red, the display shows "ice
off".
In addition, with the IB 7/40 Advanced
model, the jet pressure and the dry ice vol-
ume can be changed on the jet pistol.
ṇ Warning
Risk of damage to the dosing equipment on
account of dirt. Keep the lid of the dry ice
container closed during the spraying oper-
ation to prevent sprayed off dirt from enter-
ing it.
 Release the trigger of the jet pistol.
 Press emergency-stop button.
The dry ice dosing is topped and the air
flow from the nozzle is interrupted.

Interrupt the compressed air supply.
 Release emergency-stop button by
turning.
 Release the trigger of the jet pistol.
 During breaks in operation, you can in-
sert the jet pistol on the holder on the
machine.
Note
During longer breaks in operations, the dry
ice pellets can melt in the dry ice container.
As far as possible, do not interrupt opera-
tions for more than 20 minutes. In case of
extended interruptions, switch off the en-
gine.
A water separator cleans the compressed
air flowing to the device. This collects con-
densate in the water separator, that needs
to be drained once in a while.

Place the collection trough under the
condensate drain screw.
 Open the pressure relief valve slowly
and wait until the condensate has been
drained from the device.
Note
Please dispose of condensate in an envi-
ronmentally friendly manner.
 Set the appliance switch to "I".
 Press the Statistics key briefly to dis-
play the operating duration.
t: Operation duration since the last re-
set.
T: Total operating duration.
 Press the Statistics key briefly to dis-
play the processed dry ice amount.
m: Dry ice volume since the last reset.
M: Total dry ice volume.
 Press the Statistics key briefly to dis-
play the average dry ice consumption.
q: Average dry ice consumption since
the last reset.
Q: Average total dry ice consumption.
 Turn the keyswitch in a clockwise direc-
tion.
 Press the statistics key for 4 seconds.
Note
The total values cannot be erased.
 Press the keys to increase and de-
crease the jet pressure at the same
time and hold them, turn the keyswitch
clockwise.
In the operating mode basic settings, the
keys have the following functions:
1 Increase value
2 Decrease value
3 Menu point to the top
4 Menu point to the bottom
Operation
Switch-off in case of emergency
Switching on after emergency-stop
Interrupting operation
Drain off the condensate.
Statistics functions
Retrieving values
Reset values
Basic settings
17 EN