07
english
IVB 3-M
IVB 5-M
IVB 7-M
1)
Option depending on model
4.4 Acoustic
warning
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”.
4.5
Cleaning the filter
element (IVB 3-M)
Only after picking up harmless dust
using the waste bag.
If suction performance drops:
1. Set the suction power to
maximum.
2. Close the nozzles or suction
hose opening with the palm
of your hand.
3. Press the button to start filter
cleaning three times. The re-
sulting stream of air removes
attached dust from the slats
of the filter elements.
To ensure that suction perform-
ance is always at its best, the filter
element is automatically cleaned
during operation. We recommend
complete cleaning if the filter ele-
ment becomes extremely dirty.
After picking up harmless dust us-
ing the waste bag.
If the acoustic signal sounds again
after repeated cleaning, replace the
filter element (see section 7.2.5).
4.6
Cleaning the filter
element (IVB 5-M/7-M)
1. Switch off the vacuum clean-
er
2. Close the nozzles or suction
hose opening with the palm
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.
1
2
x3
Push & Clean
Filter Cleaning System
0
I
auto
