Fig. 3: Secured isolator
The isolator can be locked in the “0” position with a pad-
lock to prevent reactivation.
Additional smoke exhaust fan option
The isolator can also be locked in the “1” position with a
padlock to prevent deactivation in order to guarantee
the smoke extract function.
DANGER!
Danger of death due to impermissible activation
and deactivation!
Individuals can enter the hazardous area if the iso-
lator has been locked with a padlock to prevent acti-
vation. Activation could cause life-threatening injuries
to these individuals.
If the fan has been secured with a padlock to prevent
it from being deactivated, it can be equipped with an
automatic start-up feature in the event of a fire.
Deactivation ensures that the fan is not ready for
operation in the event of a fire and cannot transport
fire gases.
Therefore:
–
Never remove the padlock without authorisation.
–
Before removing the padlock, ensure that there
are no more individuals in the hazardous area.
Integration in an emergency stop concept required
The unit is designed for use within a system. It does not
have its own control and there is no autonomous emer-
gency stop function.
Before the unit is unit started up, install emergency stop
equipment for the unit and connect it to the system con-
trol’s safety chain.
This does not apply to smoke exhaust fans.
Connect the emergency stop equipment in such a way
that any hazardous situations for individuals and prop-
erty are excluded in the event of the power supply being
interrupted or the power supply being activated fol-
lowing an interruption.
The emergency stop equipment must be freely acces-
sible at all times.
2.8 Behaviour in the event of haz-
ardous situations or accidents
Preventative measures
Always be prepared for accidents or fire!
Keep first aid equipment (first aid kit, blankets, etc.)
and fire extinguishers close at hand.
Familiarise personnel with accident reporting, first
aid and rescue equipment.
Keep access paths for rescue vehicles clear.
Measures in the event of accidents
Trigger an emergency stop immediately, and put the
isolator into the “0” position if necessary.
Implement first aid measures.
Rescue individuals from the hazardous area.
Inform the responsible person at the operation site.
Notify the emergency services.
Clear access paths for rescue vehicles.
2.9 Labelling
The following symbols and signs are usually found in
the work area. They apply to the very location where
they are found.
WARNING!
Risk of injury due to illegible symbols!
Over time, stickers and signs can become dirty or
otherwise illegible.
Therefore:
–
Ensure that all of the safety, warning and oper-
ating information is clearly legible.
–
Replace illegible signs or stickers immediately.
Safety
Labelling
Centrifugal fans REH; RZH; BVREH; BVRA
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