Nilfisk VHS120 Manuel D'instructions page 31

Primary filter replacement, for machines equipped
with manual cleaning system
Figure 11
■ Shake the primary filter by turning the lever clockwise/
counterclockwise for at least 5 complete cycles.
■ Release the closing band (7).
■ Remove the deck (8) together with the cage, taking care
not lift the primary filter (9).
■ Remove and dispose of the filter according to the laws in
force.
■ Reset the vacuum cleaner by inserting a new filter and
fastening it on the ring (24) with the metal clamp (25).
■ Install the deck and the cage in the primary filter by taking
care that there is one spoke of the cage every two pockets
of the star filter.
■ Check the correct position of the filter shaker handle (26).
■ Fasten the closing band.
Primary filter replacement for machines that handle
dusts that are hazardous to health.
Figure 11
To replace the primary filter safely, follow the instructions
according to the type of filter/cleaning system installed on the
machine, and proceed as follows:
■ Insert the plug in the vacuum inlet.
■ Remove the deck (8) together with the cage, taking care
not lift the primary filter (9).
■ Insert the belt (10) around the filter chamber.
■ Place the bag with the elastic band on the filter chamber
(11). Tighten the safety belt (12) on the bag, above the
band.
■ Tuck in the bag along its length. (13)
■ Remove the star filter (14) by grasping the ring with
the gasket and lift it until it is completely out of the filter
chamber (15).
■ Turn the bag on itself to obtain a section of coiled bags to
be tightened with two clamps (16). Place the two clamps
at a distance of 50 mm between them, then cut in-between
(16a) as shown in the figure.
■ Dispose of the filter (17) according to the laws in force.
■ Loosen the belt (18) and carefully move the bag elastic
band (19) towards the filter chamber upper edge.
■ Insert the second bag (20) over the first bag (21) and
tighten the safety belt (22) on the new bag.
■ Through the new bag (20) carefully remove the crop of the
first bag (21) from the edge of the filter chamber.
■ Bring the crop (21) towards the end of the second bag
(20).
■ Turn the bag (20) on itself to obtain a section of coiled
bags and close of the crop (21) at the bottom of the bag
(20) by tightening the clamp (23)
■ Loosen and remove the belt, carefully remove the bag
from the edge of the filter chamber and dispose of it
according to the law in force.
■ Reset the vacuum cleaner by inserting a new filter and
fastening it on the ring (24) with the metal clamp (25).
■ Install the deck and the cage in the primary filter by taking
care that there is one spoke of the cage every two pockets
of the star filter.
■ Check the correct position of the filter shaker handle (26).
■ Fasten the closing band.
■ Tighten the safety bolt (6) again.
Upstream absolute filter replacement
■ Disconnect the accessory hose from the inlet (1).
■ Insert the plug (2) in the inlet.
■ Remove the cover (3) from the filter shaker lever and
unscrew the nut (4).
■ Remove the filter shaker lever (5) from the cage stem.
If the removal of the filter shaker lever is difficult, beat the
cage stem slightly from the top using an awl and a hammer
as shown in the figure.
Do not apply excessive force on the deck cover.
■ Unlock the safety bolt (6), if equipped.
■ Release the closing band (7).
■ Remove the deck (8) from the cage stem (9), but do not lift
the primary filter (10).
■ Tilt the deck (8) and lay it on a suitable surface, in order to
not ruin the plastic.
■ Unscrew the ring nut (11).
■ Remove the disc (12), the iron-rubber washer (13) and the
absolute filter (14).
■ Place absolute filter (14) in a plastic bag, close the bag
hermetically and dispose of the filter in accordance with
the laws in force.
■ Insert a new absolute filter (14) with the same filtering
characteristics as the removed one.
■ Install the iron-rubber washer (13) and the disc (12), then
tighten the ring nut (11).
■ Reinstall the deck (8) by inserting it on the cage stem (9).
■ Reinstall the filter shaker lever (5) by inserting it into the
cage stem (9) and turning it as shown in the figure (26,
Fig. 11).
■ Lock the lever with the nut (4), then reinstall the cover (3).
■ Fasten the closing band (7).
■ Tighten again the safety bolt (6), if equipped.
13
VHS120
Figure 12
[ NOTE ]
CAUTION!
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