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Manual PTB 24 ATEX 1001 X
7.
Inspection, maintenance and repair
The provisions of IEC 60079-17 'Inspection
and maintenance of electrical installations in
hazardous areas' relating to inspection, ser-
vicing and maintenance must be complied
with. In the course of inspections and main-
tenance work, those components on which
the type of explosion protection is dependent
must be inspected particularly carefully.
Only genuine spare parts from the Manufac-
turer may be installed.
7.1
Qualifications
The inspection, servicing and maintenance of
the systems may only be carried out by experi-
enced personnel who during their training have
also been instructed in the various types of
explosion protection, installation processes, the
relevant rules and regulations and the general
principles of hazardous zone classification.
Appropriate ongoing training or instruction must
be given to these personnel regularly.
7.2
Maintenance intervals
The required maintenance intervals depend on
the application and must therefore be specified
by the user to suit the operating conditions.
7.3
Ambient temperature
To keep the surface temperature below the per-
mitted maximum, it must be ensured that the
ambient temperature remains within the range
–50 °C up to 50 °C ou 60 °C. The effects of any
other local heat sources (process heat) must
also be taken into account. These must not
cause an additional temperature rise in the ter-
minal box or at the thermostats.
7.4
Requirements tof the enclosure
The condition of the gasket and gland seals must
be checked. When replacing cable entries or
plugs, it must be ensured that they seal correct-
ly.
Edition April 2024
Copyright
23
thuba Ltd., CH-4002 Basel
Switzerland
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