Installation, Operation and Maintenance manual
5
Downflo
®
Evolution
Shutoff and bleed-off compressed air supply before doing any service work.
In each individual case vent design, vent ducts and pressure resistant design
are worked out by Donaldson Torit for the specific products, circumstances and
environment, and should never be altered unless Donaldson Torit has given
explicit admission.
All electrical equipment should be dust explosion proof according to the zoning
and surface temperature limitations of the equipment.
The dust collector cannot be used in a potentially explosive atmosphere
(according to ATEX directive 2014/34/EU), unless stated otherwise on the
nameplate of the unit and the scope of delivery.
When handling explosive or flammable materials, the collector should be
located so as to avoid external heat source - e.g. from nearby processes or
extreme direct sunlight.
The user of the dust collector is responsible for disposal of any dust generated
by the process, in accordance with local regulations.
The dust collector will not prevent explosions;
The main cause of dust explosions in dust collectors are hot and glowing
particles which are formed in the process upstream - these are conveyed
into the collector and get imbedded on the filter medium. There they either
extinguish or develop into a smoldering or even open fire, in the end leading
to an explosion.
A prudent user of Donaldson Torit dust collectors should:
• Take every possible precaution to prevent a fire or explosion from occurring.
• Consult with their insurance carrier or local authorities regarding the hazardous
nature of dust produced.
• If dust is classified poisonous, corrosive or irritant as per ‘Gef-Stoff V’, an
explosion venting system should not be used. The dust collector will then have
to be protected from explosion by other methods (consult your Donaldson Torit
representative).
• Sizing of the bursting o reinforcement of the dust collector are dependent
on the dust collector type, the dust explosiveness (Kst value or St classification)
and on the blow- off channel size when required.
• Consult and comply with national and local codes or bulletins (VDI 3674) when
determining location and operation of Donaldson Torit dust collectors.
• Use only authorised replacement parts supplied by Donaldson Torit.
• Unless otherwise specified, DO NOT exceed negative operating pressure as
specified by technical data, DO NOT use on positive pressure systems.
• Insure that the operating temperature of the dust collector does not exceed 120° C.
• Do not locate the bursting panel assembly where people are exposed to the
bursting panel itself or to the area above or in front of the bursting panel as they
may be injured by the escaping pressure, fire, noise, chemicals and/or fragmenting
particles. The location of the bursting panel must be such that the discharge
cannot be the ignition source of secondary explosions. Interfacing equipment
and/or machinery must also be protected.
• Refer to guidelines VDI 3673.
