Nilfisk 3707 Manual De Instrucciones página 38

3707 - 3707/10 - 3907 - 3907/18 - 3907W
Primary filter replacement, for machines equipped
with electric filter shaker cleaning system
■ Remove the hose (1) from the upper inlet.
■ Release the two closing hooks (4) and remove the cover
(5).
■ Sling the cover and lift it carefully, because the star-shaped
filter and the shaking cage are connected to the cover.
Do not rest the cover-star-shaped filter assembly
vertically on the ground, but use suitable supports or
rest it sideways, as the weight of the cover can damage
the filter and the shaking cage.
■ Lift the filter (6), unscrew the clamp (7) and remove the
ring (8).
■ Cut the clamps (10) and detach the cage from the filter.
■ Fit the filter catch and retention ring of the old filter on to
the new one.
■ Insert the cage (9) and fix it to the filter by means of the
clamps (10) on the bottom of the filter itself.
■ After removing the plastic cover, check that:
- The lever (11) fastened to the drive shaft (12) of the
cage (10) must be halfway along its travel in the neutral
central position.
- The connecting rod (13) fastened to the reduction
unit (14) must point downwards. Only in this way, when
operating the reduction unit (14), the cage (10) will cover
an equal travel to the right and left when, without tightening
the filter (8). The filter could be torn and the motor of the
reduction unit burnt out if this is not done.
■ Fit the filter into the filtering chamber, then mount the
cover and lock it in place with the two fastening latches.
Before closing the hooks to lock the cover, shake the
filtering unit by hand in order to remove any small
positioning defects.
■ Fit the vacuum hose on the upper inlet.
EN
GB
C65
Figure 14
CAUTION!
CAUTION!
Primary filter replacement for machines that handle
dusts that are hazardous to health.
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 (1) in the vacuum inlet.
■ Insert the belt (2) around the filter chamber.
■ Place the bag with the elastic band on the filter chamber
(3). Tighten the safety belt (4) on the bag, above the band.
■ Tuck in the bag along its length. (5)
■ Remove the star filter (6) by grasping the ring with the
gasket and lift it until it is completely out of the filter
chamber (7).
■ Turn the bag on itself to obtain a section of coiled bags to
be tightened with two clamps (8). Place the two clamps at
a distance of 50 mm between them, then cut in-between
(9) as shown in the figure.
■ Dispose of the filter (10) according to the laws in force.
■ Loosen the belt (11) and carefully move the bag elastic
band (12) towards the filter chamber upper edge.
■ Insert the second bag (13) over the first bag (14) and
tighten the safety belt (15) on the new bag.
■ Through the new bag (13) carefully remove the crop of the
first bag (14) from the edge of the filter chamber.
■ Bring the crop (14) towards the end of the second bag
(13).
■ Turn the bag (13) on itself to obtain a section of coiled
bags and close of the crop (14) at the bottom of the bag
(13) by tightening the clamp (16)
■ Loosen and remove the belt and gently remove the bag
from the edge of the filter chamber.
Upstream absolute filter replacement
■ Unscrew the knob (1).
■ Remove the cover (2).
■ Release the filter knob (3), cover the filter (4) with a plastic
bag and remove everything.
■ Seal the plastic bag hermetically, insert a new filter unit
which complies with the laws in force and seal the cover
again hermetically.
Downstream absolute filter replacement
■ Unscrew the knob (1).
■ Remove the cover (2).
■ Release the filter knob (3), cover the filter (4) with a plastic
bag and remove everything.
■ Seal the plastic bag hermetically, insert a new filter unit
which complies with the laws in force and seal the cover
again hermetically.
16
Figure 15
Figure 16
Figure 17