Installation, Operation and Maintenance manual
6
DFPRE 4 Dust Collectors
The access door requires tools to open. To avoid danger from rotating fan
impellor, ensure fan is isolated and allow sufficient time for fan to become
stationary.
Do not put lit cigarettes or any burning object into the hood or ducting of any
dust collection system.
Compressed air is recommended for collectors that operate using reverse
jet cleaning. Alternative gases should be assessed before use to ensure that
explosive atmospheres are not introduced during media cleaning.
Care should be taken to ensure that any potentially explosive atmosphere
is not present when performing operations that increase the risk of ignition
(opening of controller for adjustment or electrical repair for example). Ensure
the installation is always returned to its original state.
All electrical equipment should comply with a category according to EN 60079-0.
The DFPRE 4 dust collector is designed for handling non-explosive dusts.
Where applicable, equipment connected to the dust collector (for example,
a cyclone) should be protected, using suitable isolation devices, against the
transfer of flame and pressure if, in the event of an explosion initiating inside the
dust collector, the connected equipment is not capable of safely withstanding
these effects.
None of the fan assemblies can be considered to be a fully sealed design,
indeed most are arranged with either an open inlet or an open outlet. For this
reason, the internal and external atmospheres can be considered the same
in terms of any potentially hazardous classification.
Standard fan assemblies should not exceed 3000 rpm (50 Hz supply) on
systems fitted with an inverter drive.
The filtration media is suitable for filtering particulate only (and not gas).
Some applications are prone to risk of fire. This risk can be reduced by pulse
cleaning and emptying the dust container regularly.
•
Any extinguishing technique and material used must be suitable for the
flammable nature of the dust.
•
A water sprinkler system can be fitted as a special option.
Materials handled by the dust collector may be hazardous (e.g. toxic). Conduct
a Risk Assessment to ensure correct technique is employed.
