Primary And Absolute Filter Disassembly And Replacement; Primary Star Filter Replacement; Upstream Absolute Filter Replacement - Nilfisk cfm VHT437EXP Manual De Instrucciones

VHT437EXP - VHT456EXP
Primary and absolute filter disassembly
and replacement
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 the bag hermetically;
■ Dispose of the filter in accordance with the laws
in force.
Filter replacement is a serious matter. The filter must
be replaced with one of identical characteristics,
filtering surface and category.
Otherwise the vacuum cleaner will not operate
correctly.

Primary star filter replacement

1. Vacuum union hose
2. Band latch
3.
Lid
4. Hose clamp
Take care not to raise dust when this operation is carried out.
Wear an N100 (P3) mask and other protective clothing
including 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.
■ Loosen the hose clamp (4).
■ Remove the vacuum union hose (1).
■ Use the band latch (2) to remove the lid (3) together with
the primary star filter.
■ Remove the old star filter from the cage.
US
■ Fit the new star filter and secure it in the cage with
special ties.
■ Install the lid and the primary star filter in the reverse
order of removal.
■ Dispose of the old star filter according to the laws in
force.
If necessary contact the manufacturer's Service Center.
C404
WARNING!
WARNING!
Figure 13

Upstream absolute filter replacement

Version for dust harmful for the health
Take care not to raise dust when this operation
is carried out. Wear an N100 (P3) mask and other
protective clothing including protective gloves (PPE
/ DPI) suited to the hazardous nature of the dust
collected; refer to the laws in force.
Do not use the absolute filter again after having
removed it from the vacuum cleaner.
1. Manual filter shaker knob
2. Lid
3. Band latch
4. Stop nut (absolute filter)
5. Absolute filter retaining plate
6.
Primary star filter
7. Primary star filter clamp fixing screw
8. Primary star filter clamp
9. Absolute filter (HEPA)
10. Vacuum union hose
11. Hose clamp
■ Stop the vacuum cleaner.
■ Loosen the hose clamp (11) with a screwdriver and
remove the vacuum union hose (10).
■ Unscrew the manual filter shaker knob (1).
■ Use the band latch (3) to remove the lid (2).
■ Loosen the fixing screw (7) of the primary star filter (6)
clamp (8) using a screwdriver.
■ Remove the filter retaining plate (5) with the absolute
filter installed and unscrew the stop nut (4).
■ Remove the absolute filter (9).
■ Cover the absolute filter (9) with a plastic bag, close
the plastic bag hermetically and dispose of the filter in
accordance with the laws in force.
■ Insert a new absolute filter (9) with the same filtering
characteristics as the removed one.
■ Lock the absolute filter with the nut (4).
■ Tighten the clamp (8) fixing screw (7) of the primary star
filter (6) to the absolute filter retaining plate (5).
■ Insert the lid (2) again.
■ Close the cover hermetically by means of the band latch
(3).
■ Fit the vacuum union hose (10) back in place and tighten
the hose clamp (11).
10
WARNING!
WARNING!
Figure 14
02/2014