Acoustic Warning; Cleaning The Filter Element; Applications And Techniques; Picking Up Dry Substances - Makita 447 M Notice D'utilisation

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4.4

Acoustic warning

4.5
Cleaning the filter
element
To ensure that suction performance
is always at its best, the filter ele-
ment is automatically cleaned dur-
ing operation. We recommend com-
plete cleaning if the filter element
becomes extremely dirty.

5 Applications and techniques

5.1
Techniques
5.1.1 Picking up dry
substances
Do not pick up flammable substanc-
es.
For safety reasons, an acoustic
warning sounds if the air speed
in the suction hose drops to be-
low 20 m/s. See section "Trou-
bleshooting".
After picking up harmless dust us-
ing the waste bag.
1. Switch off the vacuum clean-
er
2. Close the nozzles or suction
hose opening with the palm
If used correctly, additional ac-
cessories, suction nozzles and
suction hoses can enhance the
cleaning action and reduce the
cleaning effort.
The suction hose diameter must
suit the position of the switch in
order to pick up dry, nonflam-
mable dust with maximum room
concentration 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 9.5 "Accesso-
ries" for ordering number.
To pick up harmless dust we
recommend the use of a waste
bag. See section 9.5 "Accesso-
ries" for ordering number. Dis-
10 sec .
of your hand.
3. Turn the switch to position „I"
and let the cleaner operate
for approx. 10 seconds with
the suction hose opening
closed.
Effective cleaning is achieved if
you follow just a few guidelines
in combination with your own
practical experience in special
fields.
Here are some basic tips.
posal of the picked up material
is then simple and hygienic.
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 be-
fore dry substances are picked
up.
Always use a filter bag/waste
bag that is suitable for the
type of dust (see table):
MAKITA 447 M
english
7

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