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D-H 22 S - 16.02.2002 / Vers.: 1
3.3 Checking the filter unit
(See figures 1 and 3, on pages 5 and 7)
Caution
The D-H 22 S manual blasting unit should only be operated with the ultra-fine
filter (7) and filter bag (14) properly inserted and free of damages.
1. Open the door to the filter compartment (4) by screwing off the two star grips
(11).
2. Make sure that the ultra-fine filter (7) is not damaged and that it is properly (i. e.
tightly) pressed by strip (17) against the sealing surfaces (49).
3. The two M6 nuts (43) should be tightened securely and evenly.
4. Make sure that the filter bag (14) was not damaged while being inserted into
the wire basket (48).
5. The plastic connection (41) of the filter bag should be fastened securely to the
connection nozzle (40).
6. Close the door tightly to the filter compartment (4) by tightening the star grips
fairly securely.
3.4 Automatic deactivation device and filter control lamp
(See fig. 3 page 7)
Note
The max. admissible filter bag (14) quantity being reached actuates the
deactivation device via a vacuum switch and the control lamp “Change filter“
(9) lights up. The suction device is switched off.
−
Filter bag (14) must then be replaced. See section “4.1“.
Note
If the unit is switched off by the automatic deactivation device then you can still
work with it for a short while without having to change the filter bag by first
switching the unit off and on again and by tapping the filter bag (14).
Note
If the filter bag (14) is only slightly filled when the deactivation device is actuated
(Change filter display lights up) then you should check the ultra-fine filter (7)
(see section “4.2“).
