10
EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
2
Use in potentially explosive atmospheres
Notes on use in potentially explosive atmospheres
Installation in accordance with IEC/EN 60079-14
(VDE 0165 Part 1)
The electric equipment must be installed in potentially explosive
atmospheres in accordance with IEC/EN 60079-14 (VDE 0165
Part 1) “Electric Equipment for Hazardous Gas Areas, Part 14:
Electric Systems in Potentially Explosive Atmospheres.”
Potential equalization
With regard to potential equalization, the provisions of
IEC/EN 60079-14 as well as DIN VDE 0100 Part 410 “Protection
against electric shocks” and Part 540 “Grounding, Protective
ground, Potential equalization conductors” must be observed.
Electrostatic charges
Electrostatic charges must be avoided. The professional
association rules for the “Prevention of ignition hazards due to
electrostatic charges (BGR 132) must be observed here.
Monitoring and review
Electric systems in potentially explosive atmospheres must be
monitored for proper condition.
As necessary, but at least every three years, they must be
inspected by an electrician, provided they are not constantly
monitored under the supervision of a responsible engineer.
Work on electric systems
Before any maintenance work is carried out on electric
installations in potentially explosive atmospheres, the
installations must be disconnected from the power supply.
The disconnect point must be identified with an appropriate
warning sign, for example, "Do not power-up – explosion hazard"
This does not apply to devices that may be opened as part of
normal operation, such as registration devices, or for which it is
expressly noted in the type examination certificate.
Maintenance work on the device where opening the housing or
part of the housing is necessary is only permitted in a non-
hazardous atmosphere.
DANGER
Risk of explosion!
There is an explosion hazard if the housing is opened in a
potentially explosive atmosphere:
• Before opening the housing, make sure that no flammable
or potentially explosive atmospheres are present.
Work on intrinsically safe circuits
Work on live systems may be carried out on intrinsically safe
circuits even in potentially explosive atmospheres.
However, the electric data (inductance, capacity, current and
voltage values) of the corresponding test equipment must be
observed during power-up.
Special attention is required when carrying out work on
intrinsically safe circuits that have been set up in connection
with zone 0
Explosion hazard
Before repairs, the explosion hazard must have been eliminated.
Competent personnel
Repair work may only be performed by competent personnel.
Original spare parts
Only original spare parts may be used for repairs.
Inspection prior to recommissioning
If repair work is carried out on parts of electric equipment on
which explosion protection depends, a specialist needs to
inspect and certify before recommissioning that the attributes
of the equipment in terms of design and version which are
essential for explosion protection match the equipment
described in the declaration.
Repairs by the manufacturer
Repairs can also be carried out by the manufacturer, for example
on-site by an ABB Service employee or at the manufacturing
plant.
In this case, a marking showing the performed repairs with
subsequent routine testing is affixed to the name plate.
Testing by a specialist is not required then.
