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4
Applications and techniques
4.1
Techniques
4.1.1
Picking up dry
substances
4.1.2
Picking up liquids
OEL = Occupational exposure limit *
1)
Original instruction
If used correctly, additional ac-
cessories, suction nozzles and
suction hoses can enhance the
cleaning action and reduce the
cleaning effort.
CAUTION:
Do not pick up flammable sub-
stances.
The suction hose diameter must
suit the position of the switch in
order to pick up dry, nonflamma-
ble dust with maximum room con-
centration values.
There must always be a safety
filter bag in the tank before dry
substances with maximum room
concentration values are picked
up. See section 5.2 "Accessories"
for ordering number.
To pick up harmless dust we rec-
ommend the use of a waste bag.
See section 5.2 "Accessories" for
ordering number. Disposal of the
picked up material is then simple
and hygienic.
CAUTION:
Do not pick up flammable sub-
stances.
Due to their construction vacuum
cleaners with a removable tank
(SD) do not have an automatic
level indicator.
There is a risk of damage to the
vacuum cleaner due to overfilling
or of damage due to leakage of
the picked up liquid.
1.
Never pick up more than 40
litres at once.
2.
Switch
off
cleaner and empty the dirt
tank.
Before
liquids
Optional accessories / Option depending on model
)
Effective cleaning is achieved if
you follow just a few guidelines in
combination with your own practi-
cal experience in special fields.
Here are some basic tips.
After picking up liquids, the filter
element is wet. A damp filter el-
ement clogs more quickly when
dry substances are picked up.
For this reason the filter element
should be washed and dried or
replaced by a dry element before
dry substances are picked up.
When the vacuum cleaner has
been used with dust
classified as "H", it is necessary
to clean the machine thoroughly
before using the machine with
dust classified as "M" or lower.
Always use a filter bag/waste
bag that is suitable for the type
of dust.
up,
always
ter bag/waste bag and check
that the float or the water
level limit works properly. (See
section C "Replacing the filter el-
ement".)
The use of a separate filter ele-
ment or filter screen is recom-
mended.
If foam appears, stop work imme-
diately and empty the tank.
the
vacuum
To reduce the amount of foam,
use foam killer Nilfisk Foam Stop
(see section 5.2 „Accessories" for
order number).
are
picked
remove
the
fil-
21
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