Primary Cartridge Filter Cleaning (Infiniclean); Emergency Stopping; Emptying The Container; Plastic Bag (Class L Only) - Nilfisk VHW320 Manual De Instrucciones

Primary cartridge filter cleaning
(InfiniClean models)
Figure 11
1.
Solenoid valve for filter cleaning
2. Filter cartridges
3. Timer
The filtering cartridges (2) serve the purpose of filtering the
intake air. The vacuum cleaner is equipped with solenoid
valves (1) that, by deflecting the air coming out of the blower,
allow for cyclic cleaning of the filtering cartridges (2). The fully
automatic system grants work continuity and is driven by a
cyclic timer (3) that allows to adjust the intervals T0, T1, T2
which define the cleaning cycle.
WARNING!
The factory setting of the cycle intervals is the one
that allows for a better cleaning in the majority of
applications. For this reason the factory setting should
not be modified. If necessary, for heavy applications
(for example, to collect heavy quantities of very fine
dust - more than 3 kg per minute), it is possible to
modify the intervals by following the instructions in
the Service Manual, available at the Manufacturer's
Service Center.

Emergency stopping

Turn the main switch to "0" position.

Emptying the container

Before stopping the vacuum cleaner, it is advisable to clean
the filters (see "Main filter cleaning" paragraph).
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.
■ Before proceeding with these operations, turn off
the vacuum cleaner and remove the plug from the
power socket.
■ Check the class of the vacuum cleaner.

Plastic bag (Class L only)

A plastic bag can be used to collect dust (see (1) Fig. 12).
In this case, the vacuum cleaner must be equipped with
optional accessories [depressor (3) and grid (2), Fig. 12].
03/2017
VHW320 - VHW321 - VHW420 - VHW421 - VHW440

Versions for dusts harmful to health

■ Classes L, M, H suitable for vacuuming hazardous and/
or carcinogenic dust (H class)

Paper bag

Class M vacuum cleaners are supplied with the dust bag (*)
(Fig. 13).
Class M vacuum cleaners must always be used with this bag
installed. If the bag is not installed or is installed incorrectly,
this could create health risks for persons exposed.

Safe Dust Bag

The class H vacuum cleaners are supplied with a dust bag (*)
(Fig. 14); ATEX Z22, Z2, Z21 vacuum cleaners are supplied
with a antistatic dust bag (*). Class H vacuum cleaner must
always be used with that bag installed. If the bag is not
installed or is installed incorrectly, this could create health
risks for persons exposed.
(*) For the codes, see the Recommended Spare Parts table

Replacement of hazardous dust bags

■ These operations can only be carried out by trained
and qualified personnel who must wear adequate
clothing, in compliance with the laws in force.
■ Take care not to raise dust when this operation is
carried out. Wear a P3 protective mask.
■ In case of hazardous and/or harmful dust, use only
the bags recommended by the manufacturer (see
"Recommended spare parts").
■ The container and/or bag must only be disposed of
by qualified personnel and in compliance with the
laws in force.
Replacement of the paper bag (Fig. 13)
■ Close the inlet by using the relevant cap (1) and the
shutter valve (1, Fig. 15).
■ Release the dust container.
■ Remove the bag and close it with the relevant cap (2) as
shown in figure 13.
■ Insert a new bag, making sure the bag inlet is well over
the border (3) to grant the sealing.
■ Place the dust container in the vacuum cleaner.
11
WARNING!
GB
C393