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7. Safety instructions
The following safety instructions should be read in conjunction with the following standards:
standard NF C 15 100
standard IEC 60079-14 (Electrical installations design, selection and erection)
standard IEC 60079-17 (Electrical installations inspection and maintenance)
standard IEC 60079-31 (Equipment dust ignition protection by enclosure "t").
decrees, laws, directives, circulars of application, standards, rules of art and any other documents
concerning its place of installation
It is strictly forbidden to change anything on and in the enclosure without our prior agreement
Make sure the compatibility between the data on the nameplate of the enclosure with the existing
explosive atmosphere, the area of use, the ambient temperature and surfaces temperatures
Any damage of the equipment can have for consequence to make ineffective the explosion-proof
protection
The installation of the enclosure have to be performed in the state of the art in the technical domain
and only by qualified, competent and authorized person.
A defective or abnormal use as well as the non-observance of the instructions of this document
exclude any clause of of guarantee and do not engage our responsibility.
According to the standard IEC 60079-31, it is prohibited to operate the enclosure if the dust
thickness on it is greater than 50 mm.
Ex-tech Solution ensures the traceability of the enclosures up the first place of delivery.
8. Before starting
Make sure the unit has been correctly settled and not damaged
Make sure the wiring and the tightening of the terminal screws have been performed properly (see
descriptive tightening torque)
The device may include any foreign body and no part is damaged
The cable gland must be tightened (see description of the gland torque)
9. Special conditions for safe use when the intrinsically safe equipment is installed in the
flameproof enclosure
When the enclosure is equipped with intrinsic safety elements, a temperature probe must also be fitted
inside and be connected to a system that can switch off the supply when the inner temperature raises the
maximum ambient temperature indicated in the certificates of the IS elements.
The products that can be connected to the IS elements installed inside the enclosure must be certified type
and association must be compatible in regards of intrinsic safety.
10. Maintenance
The maintenance and repairs works on devices must be made only by authorized and trained persons for
that purpose.
Before any technical intervention the devices must be switched off.
Prevent and avoid any formation of layers of dusts: make a periodic cleaning with a wet cloth
Do not take apart the command and control units (push buttons, pilot light, etc.)
The following checks must be made at least once a year:
The outdoor equipment and surfaces must not be damaged
The cable entries and blanking plugs must be threaded
Check tightness of the connections, rewiring if necessary
Prior to closing, check the cleanliness of the flame path (machined part of the cover in contact the
machined part of the box). Grease these 2 parts with a grease resistant to oxidation (OPAL - Siberia,
for example)
DE8143A12-07 01/12/2016
Operating instructions
Flameproof enclosure - DE8BA/XB8BA series
ENG
12/16
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