Primary And Absolute Filter Disassembly And Replacement; Primary Cartridge Filter Replacement; Upstream Absolute Filter Replacement (Optional) Only Vhw321 - Vhw421 - Vhw441 Models; Downstream Absolute Filter Replacement - Nilfisk VHW320 Manuel D'instructions

VHW320 - VHW321 - VHW420 - VHW421 - VHW440 - VHW441 ClassII Div2 Group F, G
Original instructions
Primary and absolute filter disassembly
and replacement
WARNING!
When the vacuum cleaner is used to vacuum
hazardous substances, the filters become
contaminated, therefore:
■ Work with care and avoid spilling the vacuumed
dust and/or material.
■ Place the disassembled and/or replaced filter in a
sealed plastic bag.
■ Close it hermetically.
■ Dispose of the filter in accordance with the laws in
force.
WARNING!
Filter replacement is a serious matter. The filter must
be replaced with one of identical filtering surface
characteristics.
Otherwise the vacuum cleaner will not operate
correctly.
US
C430

Primary cartridge filter replacement

Figure 12
1. Vacuum union hose
2. Lid release levers
3. Lid
4. Cartridge filter plate
5.
Seal
6. Cartridge filters
WARNING!
Take care not to raise dust when this operation is
carried out.
Wear an N100 (P3) mask and other protective clothing
plus protective gloves (PPE/DPI) suited to the
hazardous nature of the dust collected, refer to the
laws in force.
Before proceeding with these operations, turn off the vacuum
cleaner and remove the plug from the power socket.
■ Remove the vacuum union hose (1).
■ Use one of the levers (2) to remove the lid (3).
■ Remove the filter plate (4).
■ Disassemble the filters (6) from the plate by turning them
counterclockwise.
■ Assemble the new filters (6) by turning them clockwise
and check the seal (5) is not torn or broken, otherwise
replace it.
■ Install the lid and the main filter plate in the reverse order
of removal.
■ Dispose of the old filters according to the laws in force.
[ NOTE ]
The cartridges must be fully tightened by hand; check that
cartridge gasket is tightened against the upper support. In
any case, do not apply a tightening torque higher than 9
ft-lbs (12 Nm).
If necessary, contact the manufacturer's Service Center.
12
VHW320 - VHW321 - VHW420 - VHW421 - VHW440 - VHW441 ClassII Div2 Group F, G
Upstream absolute filter replacement
(optional) only VHW321 - VHW421 -
VHW441 models
WARNING!
Take care not to raise dust when this operation
is carried out. Wear an N100 (P3) mask and other
protective clothing plus protective gloves (PPE/DPI)
suited to the hazardous nature of the dust collected;
refer to the laws in force.
WARNING!
Do not use the absolute (HEPA) filter again after
having removed it from the vacuum cleaner.
Figure 13
1. Knob
2. Arm
3. Knob
4. Cover
5. Absolute filter (HEPA)
6. Ring for bag
7. Bag for filter
WARNING!
Reassemble with care to avoid trapping your hands
between the vacuum unit and the container. Use
gloves that provide ANSI/ISEA Level "2" protection.
Before proceeding with these operations, turn the vacuum
cleaner off and disconnect the plug from the power socket.
■ Loosen the knob (1) and turn the arm (2)
counterclockwise to remove the cover (4) from the
machine and lock it by tightening the knob (1).
■ Loosen the knob (3) to release the absolute filter (5).
■ Let the absolute filter drop into the bag (7)-(A, fig.13).
■ Close the bag with the relevant clamps and cut (B,
fig.13).
■ Insert the new absolute filter (5) inside the new bag (7)
with the flange first.
■ Fasten the new bag (7) to the cover(4) with the new ring
(6) for bag (C fig.13)
■ Remove the old ring for bag (6) with the bag (7) from the
cover (4) and let it drop to the filter flange.
■ Overturn the absolute filter (5) inside the bag (7) in order
to move to the bottom part of the bag the end part of the
old bag and the corresponding rubber ring (D, fig.13).
■ Lift the absolute filter (5) from the bottom of the bag and
place it inside the cover (4), then slightly tighten the knob
(3) so that the absolute filter (5) is supported (D, fig.13).
■ Roll up the bag (7) in order to remove the air inside;
it must be as flat as possible under the absolute filter
flange (5).
■ Fasten the absolute filter (5) by tightening the knob (3).
■ Loosen the knob (1), turn the arm (2) clockwise in order
to insert the cover (4) in the machine, then lock the arm
(2) with the knob (1).
02/2017 02/2017
Original instructions

Downstream absolute filter replacement

WARNING!
Take care not to raise dust when this operation
is carried out. Wear an N100 (P3) mask and other
protective clothing plus protective gloves (PPE/DPI)
suited to the hazardous nature of the dust collected;
refer to the laws in force.
WARNING!
Do not use the absolute filter again after having
removed it from the vacuum cleaner.
Figure 14
1. Knob
2. Cover
3. Absolute filter (HEPA)
WARNING!
Reassemble with care to avoid trapping your hands
between the vacuum unit and the container. Use
gloves that provide ANSI/ISEA Level "2" protection.
Before proceeding with these operations, turn the vacuum
cleaner off and disconnect the plug from the power socket.
■ Unscrew the knob (1), and remove the cover (2).
■ Remove the absolute filter (3) and place it in a plastic
bag, close the bag hermetically and dispose of the filter
in accordance to the laws in force.
■ Insert a new absolute filter (3) with the same filtering
characteristics as the removed one.
■ Reinstall the cover (2) by fastening it with the knob (1).
13
US
C430