AB1-X3-YB002eng 31.07.2023 www.exepd.de
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The control and signal device must not be exposed to any charge carrier-generating
processes and charge mechanisms (applies to emergency stop and mushroom
pushbutton).
(e.g., particles moving fast along a surface, pneumatic transport of dust and the spraying
of charges in an electrostatic coating process).
8. Assembly and installation
The control and signal device must be installed in a fixed location and secured against
loosening and twisting.
The line must be mechanically protected and firmly laid, the
Bending radii (4 x cable diameter) must be observed during installation.
The connection must be made in a safe area or in a suitable connection area (e.g. Ex e or
Ex t terminal box). The connecting cable may be shortened for the installation.
Observe the maximum connection data on the type plate.
The head area is adequately protected against the risk of a mechanical hazard, the
connection side must be protected against the risk of a mechanical hazard, e.g. by
mounting in a housing/device with the type of protection increased safety "e" and
protection by housing "t" or by a suitable device Installation in a panel, etc.
In order to discharge electrostatic charges, the control and signalling device requires a
connection to earth of max. 100 MΩ (measured with 1 kV at 50% relative humidity). This
can be done simply by installing it on conductive or dissipative bases, which in turn are
grounded. In the case of insulated installation, equipotential bonding/grounding can be
established with a lug.
The installation requirements according to EN 60079-14 must be taken into account.
9. Commissioning
Before the first start-up, the control and signal device must be checked for suitability in
the relevant zone. The values specified on the type plate must not be exceeded. If the
device is used in areas where there is a risk of dust explosion, dust deposits larger than
5mm on the top of the control and signal device are not permitted.
The installation of the control and signal device and the functional arrangement within
the system must be checked before commissioning.
It may only be used if it is undamaged and clean.
10. Operation, maintenance, and troubleshooting
The operator of an electrical system in a potentially explosive environment must keep the
equipment in good condition, operate it properly, monitor it and carry out maintenance
and repair work. See also EN 60079-17.
Maintenance work and work to eliminate faults may only be carried out by trained
specialist personnel.
Before maintenance and/or troubleshooting, the specified safety regulations must be
observed. The warnings on the devices must be observed!
Before recommissioning, the applicable laws and guidelines must be observed.
