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Dust Extractor
RL 250/RL 300
Hazard prevention/Remaining risks
18.3 Dust hazard prevention
Using non-reusable and sealable chip sacks enables a
relatively dust-free disposal. To reduce the risk of danger,
comply with the information about waste disposal in the
operating manual (i.e. wearing P2 dust respirators).
Attention: Risk: it is possible to breathe in dust when closing and changing the dust collecting sack (chip
sack). If the waste disposal information in the operating manual is not heeded (i.e. wearing P2 dust respi-
rators), dust may be inhaled.
18.4 Fire and explosion hazards prevention
If sparks are vacuumed, smouldering nests may de-
velop in the dust deposits and the collecting container.
In particular the extraction of wood dust can develop
into, during the vacuuming process or once the device
is switched off, a combustible dust and air mixture. This
mixture can develop into a very serious fire. To fight this
fire hazard, the dust extractor has been equipped with
an automatic spark extinguisher.
A temperature sensor detects the fire and the sensor
reacts to a temperature rise of over 70°C within a max.
of 30 seconds and closes the solenoid valve of the extin-
guisher. Simultaneously, the extraction fan is switched off
and the compressed air supply to clean the filter is shut
off.
A hold-back gate at the entrance of the crude gas in the
dust extractor, prevents the fire spreading out into the suc-
tion pipe and further into the machine.
The dust extractor body is pressure explosion proof up to
200 mbar.
Attention: Risk! The integrated extinguisher must be connected by the operator or by a specialist company
contracted to do so. Note that a min. pressure of 0.5 bar must be present in the pipe and that there is
sufficient water available to extinguish a fire.
Removing components (i.e. the hold-back gate) or changing the Logo module parameters will have seri-
ous consequences when attempting to fight a fire.
