Safety Devices; Controls, Indicators And Connections; Inspections Before Starting; Starting Up - Nilfisk VHW320 Manual De Instrucciones

VHW320 - VHW321 - VHW420 - VHW421 - VHW440 - VHW441 ClassII Div2 Group F, G
Original instructions

Safety devices

Figure 5
1. Regenerative blower
2. Pressure relief valve
3. Check valve (Clapet)
WARNING!
Do not tamper with the pressure relief valve setting.

Controls, indicators and connections

Figure 6
1. Dust container release lever
2. Caster brake
3. PullClean flap
4. Vacuum gauge
5. Manual motor starter
6. Power supply cord
7. Handle
8. PullClean inlet collar

Inspections before starting

Figure 7
1. Inlet
Prior to starting, check that:
■ The filter is installed.
■ All latches are tightly locked;
■ The vacuum hose and tools have been correctly fitted
into the inlet (1);
■ The bag or safety container is installed, if applicable.
Do not use the vacuum cleaner if the filter is faulty.

Starting up

Figure 8
1. Castor brakes
2. Start switch
US
Lock the castor brakes (1) before starting the vacuum cleaner.

Starting/stopping the vacuum cleaner

■ Turn the switch (2) to "I" position to start the vacuum
cleaner.
■ Turn the switch (2) to "0" position to turn the vacuum
cleaner off.
Checking the rotation direction of the vacuum unit
motor
Check the vacuum cleaner operation by putting a hand over
the inlet.
If the vacuum cleaner does not vacuum any air, the rotation
direction is not correct; remove the plug from the socket and
exchange the connection of two phases inside the plug to
perform the correct phase sequence.
C430

Vacuum cleaner operation

Figure 9
Vacuum gauge (2): green zone (3), red zone (1)
Check the flow rate:
■ when the vacuum cleaner is operating, the pointer of
the vacuum gauge must remain in the green zone (3)
to ensure that the speed of the intake air does not drop
below the safety value of 3937 ft/min (20 m/s);
■ if the pointer is in the red zone (1) it means that the
speed of the air in the vacuum hose is less than 3937
ft/min (20 m/s) and that the vacuum cleaner is not
operating in safety conditions. The filter must be shaken
or replaced.
■ during normal operation conditions, close the vacuum
hose, the pointer of the vacuum gauge must switch from
the green zone (3) to the red zone (1).
WARNING!
When the vacuum cleaner is operating, always check
that the vacuum gauge pointer remains in the green
zone (3).
Consult the "Troubleshooting" chapter if faults occur.

Primary cartridge filter cleaning

Figure 9
Depending on the vacuumed dust quantity and when the
pointer of the vacuum gauge switches from the green zone
(3 ) to the red zone (1), clean the main filters by rotating the
PullClean inlet collar (4) to the "Closed" position with the
machine still running. Open the PullClean flap (5) several
times for 1 or 2 seconds each time.
IMPORTANT: Return the PullClean inlet collar to the "Open"
position to continue normal operation.

Emergency stopping

Turn the main switch to "0" position.
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VHW320 - VHW321 - VHW420 - VHW421 - VHW440 - VHW441 ClassII Div2 Group F, G

Emptying the container

WARNING!
Before proceeding with these operations, turn off the
vacuum cleaner and remove the plug from the power
socket.
WARNING!
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
vacuumed substance.
Before stopping the vacuum cleaner, it is advisable to clean
the filters. See Primary Cartridge Filter Cleaning (PullClean
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.
■ 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.

Polyliner bag

An antistatic polyliner can be used to collect dust (see Fig. 10).
In this case, the vacuum cleaner must be equipped with
optional accessories [depressor (3) and grid (2), Fig. 10].

At the end of a cleaning session

■ Turn off the vacuum cleaner and remove the plug from
the socket.
■ Wind the connection cable around the cable carrier.
■ Empty the container as described in the "Emptying the
container" paragraph. Clean the vacuum cleaner as
described in the paragraph "Maintenance, cleaning and
decontamination".
■ Wash the container with clean water if aggressive
substances have been vacuumed.
■ Store the vacuum cleaner 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. 11).
02/2017 02/2017
Original instructions
Maintenance, cleaning and
decontamination
WARNING!
The precautions described below must be taken
during all maintenance operations, including cleaning
and replacing the primary and HEPA filters.
WARNING!
The maintenance, cleaning and decontamination
operations must only be performed with the vacuum
cleaner turned off and the plug disconnected from the
power socket.
It is absolutely forbidden to perform maintenance with
the plug connected to the socket.
Danger of electric shock!
■ If the user is performing the maintenance operations, all
the suitable precautions should be taken. The suitable
precautions include decontamination, adequate filtered
ventilation of the exhaust air from the room in which
maintenance is performed, cleaning the maintenance
area and suitable personal protection.
WARNING!
This vacuum cleaner can be equipped with an
absolute (HEPA) filter for vacuuming dust hazardous
to one's health. The procedures for servicing and
emptying the vacuum cleaner, including removing the
dust container, must only be performed by authorized
personnel wearing protective clothing. Do not use
without the complete filter system in place.
■ All parts of the vacuum cleaner must be considered
contaminated when they are removed from the
hazardous zone and appropriate actions must be taken
to prevent the dispersion of dust.
When maintenance or repair procedures are carried out,
all the contaminated elements that cannot be properly
cleaned must be eliminated.
These elements must be disposed of in sealed bags,
conforming to applicable regulations and in accordance
with the local laws governing the disposal of such
material.
This procedure must also be followed when the filters are
eliminated (primary and absolute filters).
Compartments that are not dust-tight must be opened
with suitable tools (screwdrivers, wrenches, etc.) and
thoroughly cleaned.
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C430