30
October 2010
AUTOMATIKPRODUKTER
AUTOMATIKPRODUKTER
ATEX – Duct Smoke Detector
Limits of application
In case of interference factors arising due to operating conditions, such as, dust,
smoke, humidity or steam, false alarms due to sensor deception are possible.
It must be ensured that the smoke switch is not exposed to condensation. The
LRS 04 Ex is not designed for outdoor applications. This information must be
taken into consideration when planning and designing the system.
9.2
Electrical connection
For introduction of cables the unit is equipped with cable glands, 2 x M16,
according to ATEX. With proper use, IP 54 is complied with for the sealing area
of 4 - 8 mm.
Equipotential bonding must be connected to the M6 bolt on the mounting plate
as intended. The spring washers and hex nuts required, are supplied with the
unit. The required cross section of the line and the properties of the cable jacket
must be adapted to the conditions present.
Safety notes:
When introducing and fastening the cables it must be ensured that no
leakages occur towards the ventilation duct. In LRS 04 Ex the LED of the
ORS 221 Ex or the arrow in the base points towards the outlet tube. Correct
functioning of the LRS 04 Ex is only ensured with the cover properly closed.
