Karcher NT 80-1 B1 M EU - Manual (Page 12)

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– From a safety point of view, industrial
vacuum cleaners with protection
against dust explosions are not suitable
for sucking in hazardous substances
that are explosive by nature, fluids and
mixtures of combustible dust with fluids
according to Section 1 of the Explosives
Act.
– Please follow the safety regulations ap-
plicable to the materials to be sucked in.
During proper/ improper use, the parts
(such as exhaust opening) of the indus-
trial vacuum cleaner can tolerate a
maximum of 95 °C.
In case of emergency (while sucking in
combustible materials, when there is a
short-circuit or some other electrical de-
fect), switch off the appliance and remove
the plug from the socket.
 Put the unit into its working position, se-
curing it with the parking brake if neces-
sary.
 Insert the suction hose into the suction
hose connection and lock it in place by
turning it in a clockwise direction.
 Attach the desired accessories and turn
them clockwise.
Note: Additional regulations can be appli-
cable to dusts with an ignition capacity be-
low 1mJ.
Note: You can use this appliance to take up
all types of dust up to dust class M. It is stat-
utorily necessary to use a dust collection
bag.
Please note the following when switch-
ing from wet to dry vacuum cleaning:
Note:If you vacuum dry dust while the filter
element is still wet, the filter will become ob-
structed and may be damaged beyond re-
pair.

Dry the wet filter properly before use or
replace it with a dry one.
– Suction of normal- rough dirt can be un-
dertaken without any problem with the
integrated cartridge filter.
– Change the filter, if required, according
to instructions under the section "Main-
tenance and Care".
 Remove the filter bag for wet suction.
The cartridge filter must remain in-
stalled in the machine.
 Completely empty the container after
finishing use.
A rough filter should be installed (Order No.
5.731-025.0) if liquid is to be sucked in con-
tinuously.
Note: If the container is full, a float closes
the suction opening, and the suction tur-
bine works at a higher speed. Switch off the
appliance immediately, and empty the con-
tainer.
 Insert the appliance plug into the mains
socket. Do not use extension cables.
 Switch on the appliance using the On/
Off switch (Position 1).
The machine is equipped with a suction
power monitor. The control lamp lights up if
the air speed in the suction hose falls below
20 m/s.

Switch off the vacuum unit, replace full
filter bag with an empty one.
 Check suction hose and attachments
for blocks.
 The cartridge filter must also be re-
placed if the machine is used for long
periods.
Note: The control lamp can light up occa-
sionally during normal operation (e.g.,
while working with a floor nozzle), if the air
volume comes down (cross-sectional re-
duction) causing a low pressure.
In Emergency
Start up
Dry vacuum cleaning
Wet vacuum cleaning
Operation
Turning on the Appliance
Automatic monitoring of suction
capacity
12 EN