Primary Cartridge Filter Cleaning (Infiniclean Models); Emergency Stopping; Emptying The Container; Plastic Bag (Optional) - Nilfisk cfm VHW320 Manuel D'instructions

VHW320 - VHW321 - VHW420 - VHW421 - VHW440
Primary cartridge filter cleaning
(InfiniClean models)
1. Solenoid valve for filter cleaning
2. Cartridge filter
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 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.
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 6.6 lbs./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 manual motor starter to the "0" position.

Emptying the container

If this vacuum cleaner is used to collect hazardous
material, do not attempt to open or empty its contents
without personal protective clothing and respiratory
protection.
This procedure must be completed in a contained
environment.
Contact with the cleaner, filters and all other
accessories used when picking up hazardous
materials must be handled according to federal
(EPA, OSHA), state and local regulations valid for the
US
vacuumed substance.
Before stopping the vacuum cleaner, it is advisable to clean
the filters. See Primary Cartridge Filter Cleaning (PullClean
models).
■ 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.
■ Check the class of the vacuum cleaner.

Plastic bag (optional)

A plastic bag can be used to collect dust (see (1) Fig. 11).
In this case, the vacuum cleaner must be equipped with
optional accessories [depressor (3) and grid (2), Fig. 11].
C394
Figure 10
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At the end of a cleaning session

■ Turn off the vacuum cleaner and remove the plug from
the socket.
■ Wind the power supply cord around the holder on the
handle.
■ Empty the container as described in the "Emptying the
container" paragraph.
■ Clean the vacuum cleaner as described in the
"Maintenance, cleaning and decontamination" paragraph.
■ Wash the container with clean water if aggressive
substances have been vacuumed.
■ Store the device in a dry place, out of reach of
unauthorized people.
■ When the vacuum cleaner is transported or not being
used, close the PullClean inlet (1, Fig. 12) and seal the
opening with the relevant cap (2, Fig. 12).
Maintenance, cleaning and
decontamination
The precautions described below must be taken
during all the maintenance operations, including
cleaning and replacing of the main and HEPA filters.
■ To allow the user to carry out the maintenance
operations, the device must be disassembled, cleaned
and overhauled as far as is reasonably possible,
without causing hazards for the maintenance staff
or other people. The suitable precautions include
decontamination before disassembling the device,
adequate filtered ventilation of the exhaust air from
the room in which it is disassembled, cleaning of the
maintenance area and suitable personal protection.
Compartments that are not dust-tight must be opened
with suitable tools (screwdrivers, wrenches, etc.) and
thoroughly cleaned.
A check must be carried out by qualified personnel at
least once a year. For example: check the air filters to
find out whether the air-tightness of the vacuum cleaner
has been impaired in any way and make sure that the
electric control panel operates correctly.
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WARNING!
10/2013