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a D:GROUP Company
10 TECHNICAL SPECIFICATIONS
Cabinetry
Work chamber
Work surface
Spillage tray
Absolute filters (main/exhaust)
Main motor-fan
Exhaust motor-fan
Speed regulation
Speed meter
Front glass
Lighting
Control panel
Power supply
Electrical system
Testing
00055EN Rev.10 – 12/2011
Steel-carbon steel varnished with epoxy powder by electro-spraying.
Perfectly air-tight structure with work area under negative pressure
Glazed AISI-304 stainless steel sheet with radiussed angles
Perforated AISI 316L stainless steel sheet (removable)
AISI 304 stainless steel, located under the work surface
HEPA filters, tested with D.O.P. fumes; efficiency of over 99.999%
for particles of 0.3 micrometres. Under the work surface HEPA filter,
multidyhedral type, tested with D.O.P. fumes; efficiency over
99.99% for particles of 0.3 micrometre
Direct coupling centrifugal type. Designed to ensure a good
protective barrier even in the case of an exhaust motor-fan failure.
IP55 protection factor
Direct coupling centrifugal type. Designed to keep the quantity of air
to be extracted constant and to create a protective barrier on the
front opening. Two speeds: a working speed and a double speed
which activates automatically in case of main motor-fan failure. This
second speed ensures the protection of the personnel and the
environment. IP32 protection factor
Automatic regulation to keep constant air-flow speed (0.40 m/sec)
and the recycled air/extracted air ratio even in the presence of
progressive clogging of the three HEPA filters, up to pressure levels
nearing 36 mm of water column
Continuous monitoring and displaying of the laminar air-flow velocity
in the work chamber and of the protective barrier. These values are
measured by two fan-anemometers unaffected by variations in
temperature and humidity
Safety glass, hinged to ensure ease of access for large items.
Equipped with gas spring(s) for opening/closing and holding the
window fully open (145° aperture)
Fluorescent tubes situated outside the work area, medium lighting
system of the work surface > 800 lux
Soft-touch keyboard on the front
220-230V - 50 Hz single phas
according to EN-61010-1 + amendments
Electronic "light scattering" meter, fan anemometer, noise meter,
luxmeter, and smoke test at the factory.
33
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