D - Additional Prescriptions For Atex Machines With Side Blower Ii 2D For Explosive Dust, Suitable For Zone 21 - Nilfisk T22 Plus Manual De Instrucciones

Atex
D - Additional prescriptions for ATEX machines with side blower
The following models are not suitable for vacuuming aircraft fuel (Jet Fuel).
Nilfisk Models:
With side blower: Tplus - 37 – 39 – CTS - VHW series
Standards of reference:
VHW, CTS and Tplus machine series comply with EN 1127-1,
EN 80079-36 Standards
All the other machines comply with EN 1127-1, EN 13463-1,
EN 61241-0, EN 61241-1 Standards
Observe the prescriptions of the above standards.
These machines have been designed to be used in explosive
atmospheres classified as Zones 21 and 22 for environments
with a presence of combustible dust.
They must never be used in Zone 20 and/or in Zones 0, 1, 2 in
the presence of Flammable Gases.
These vacuum cleaners are designed to vacuum dry and
wet particles and clean places and machines, especially in
food, chemical, pharmaceutical, textile industries, and they
are suitable for collective use in hotels, schools, hospitals,
factories, shops, offices and residences.
They are not designed to be used for ST3 explosion class
dust, that is to say dust with value of Kst > 300 bar m/s
(ISO 6184/1 – IFA classification: http://staubex.ifa.dguv.
de/?lang=e), nor dust with an ignition energy lower than
1 mJ. For these applications please refer to paragraph
G - Additional prescriptions for models equipped with
immersion separator.
These are not designed to vacuum fluids with a low flash point
GB
(Flash Point lower than 55°C), nor for incendiary substances
(T < 200 °C).
For these models, apart from following the instructions in the
use and maintenance manual of the standard vacuum cleaner,
specific precautions and maintenance are also required.
Identification plate marking:
For VHW:
II2D Ex h IIIC T125°C Db
for Zone 21
For all the other machines:
II2D IIIC T135°C Db
for Zone 21
See marking example in paragraph I.
CAtex
II 2D for explosive dust, suitable for Zone 21
CAUTION!
Check the electric panel and the grommets (Pg) for integrity, to
prevent dust infiltrations.
Check that the hose clamps are correctly tightened.
Check that the by-pass valve (vacuum limiter) is installed
and efficient: start the machine and close the vacuum inlet
completely. The valve should open and a squealing noise
should be heard. This valve prevents the vacuum unit from
overheating in case of clogging.
The maximum allowable vacuum for each vacuum cleaner is
indicated on the supplied use and maintenance manual. Do
not change the limiting valve calibration and never exceed the
indicated values.
In case of breakage, only use original Nilfisk spare parts.
Any parts that need replacing must be replaced by trained
personnel. Never perform any kind of disassembly, tampering
and/or maintenance on the safety systems.
The motor and turbine ball bearings and the protective filter
of the safety valve must be serviced by a Nilfisk Service
Center every 10,000 working hours or every 2 years.
Contact the sales network or the machine manufacturer.
The operator must not try to dismantle, tamper with and/or
service the vacuum units.
Vacuum unit corrosion can be a real danger. The vacuum units
of these machines are made of aluminium alloy. Do not vacuum
gases, vapours and/or fluids that can corrode aluminium alloys.
In the case of abnormal noise, faulty bearings or faulty
rotating parts, stop the machine immediately, as there
is the risk of explosion!
Repairs must be done by Nilfisk Service Centers only.
8
CAUTION!