Safety
6
226997 / 825060300050
2019-02-18·BA00·III·en·04
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
EN
Ex d enclosure made from aluminium/flameproof
enclosure; 8250/0 series empty enclosure,
8250/1 series terminal box,
8250/5 series control panel/control box
3.3
Residual Risks
3.3.1 Explosion Hazard
Despite the device's state-of-the-art design, explosion hazards cannot be entirely eliminated
in hazardous areas.
Perform all work steps in hazardous areas with the utmost care at all times!
Possible hazards (residual risks) can be categorised according to the following causes:
Mechanical damage
The device may be subjected to compressive forces or may be scratched during transit,
installation or commissioning, as a result of which the flame path may be damaged or it may
no longer be leak-tight. This kind of damage can, for example, render the device's explosion
protection partially or fully ineffective. This may result in explosions causing serious or even
fatal injury to persons in the vicinity.
Take into account the weight of the device; see specifications on the packaging.
Transport the device only in its original packaging or in equivalent packaging.
Use transporting or lifting equipment that is suitable for the size and weight of the device
and can reliably carry the weight of the device.
Do not place any load on the device.
Check the packaging and the device for damage. Report any damage to R. STAHL
immediately.
Store the device in its original packaging in a dry place (with no condensation),
and make sure that it is stable and protected against the effects of vibrations and knocks.
Make sure that the enclosure, Ex joint face, built-in components and seals are not
damaged (scratched, compressed) during installation.
Fasten all cover screws using the specified torques (see the chapter "Technical data").
When doing this, ensure that the original R. STAHL cover screw included in the installation
kit is mounted in each mounting hole.
You may need to use a protective grid to protect the appliance from the effects of external
conditions.
Excessive heating or electrostatic charge
Subsequently modifying the device, operating it outside of the permitted conditions, failing to
clean it properly or painting/coating it can cause it to heat up excessively or to become
electrostatically charged, in turn causing it to produce sparks. This may result in explosions
causing serious or even fatal injury to persons in the vicinity.
Operate the device only within the prescribed operating conditions (see the marking on the
device and the "Technical data" chapter).
Only allow the manufacturer to paint the device and have this company coat it with special,
conductive paint.
Do not paint or repaint the device yourself. Have all repairs performed by the
manufacturer.
Do not use the housing with standard paint (see the chapter "Technical data")
for processes that generate high charges.
Comply with the area specification of EN IEC 60079-0 when fitting additional plastic
adhesive labels.
Clean the device only with a damp cloth.
Summary of Contents for 8250/0 Series
Page 65: ......
