Blastrac BDC-22 - Main and Absolute Filter Disassembly and Replacement

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Operating manual BDC-22
13/17
GB
Main and absolute lter disassembly
and replacement
WARNING!
When the vacuum cleaner is used to vacuum
hazardous substances, the lters become
contaminated, therefore:
■ Work with care and avoid spilling the
vacuumed dust and/or material;
■ place the disassembled and/or replaced
lter in a sealed plastic bag;
■ close the bag hermetically;
■ dispose of the lter in accordance with
the laws in force.
WARNING!
Filter replacement is a serious matter. The
lter must be replaced with one of identical
characteristics, ltering surface and category.
Otherwise the vacuum cleaner will not
operate correctly.
Before proceeding with these
operations, turn the vacuum
cleaner o and disconnect the
plug from the power socket.
How to safely replace the primary lter
WARNING!
Take care not to raise dust when this
operation is carried out. Wear a P3 mask
and other protective clothing plus protective
gloves (DPI) suited to the hazardous nature
of the dust collected, refer to the laws in
force.
Figure 9
Before proceeding with these operations, turn o the
vacuum cleaner and remove the plug from the power
socket.
■ Turn o the vacuum cleaner by placing the two
buttons on “0” (1 and 2).
■ Disconnect the accessory hose from the inlet (3).
■ Insert the plug (4) in the inlet.
■ Shake the primary lter by turning the lever
(5) clockwise/counterclockwise for at least 5
complete cycles.
■ Replace the Longopac
®
bag as shown in
“Replacement of Longopac
®
bags for hazardous
dust (VHS 120 M-H)”.
■ Unlock the safety bolt (6).
■ Release the closing band (7).
■ Remove the head (8) and the cage. but do not lift
the star lter (9).
■ Insert the belt (10) around the lter chamber.
■ Place the bag with the elastic band on the lter
chamber (11). Tighten the safety belt (12) on
the bag, above the band.
■ Tuck in the bag along its length. (13)
■ Remove the star lter (14) by grasping the ring
with the gasket and lift it until it is completely out
of the lter 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
gure.
■ Dispose of the lter (17) according to the laws in
force.
■ Loosen the belt (18) and carefully move the bag
elastic band (19) towards the lter chamber
upper edge.
■ Insert the second bag (20) over the rst bag
(21) and tighten the safety belt (22) on the new
bag.
■ Through the new bag (20) carefully remove the
crop of the rst bag (21) from the edge of the
lter 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 lter chamber and
dispose of it according to the law in force.
■ Reset the vacuum cleaner by fastening the new
lter on the ring (24) with the metal clamp (25).
■ Install the head and the cage in the primary lter
by taking care that there is one spoke of the cage
every two pockets of the star lter.
■ Check the correct position of the shaker handle
(26).
■ Fasten the closing band.
■ Tighten the safety bolt (6) again.
WARNING!
Reassemble with care to avoid trapping
your hands between the head and the lter
chamber. Use gloves that provide protection
against mechanical risks (EN 388) with a level
of protection CAT. II.
If necessary contact the manufacturer’s Service
Centre.