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2.2.5. REPAIR
WARNING: EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR USE AND CAUSE DAMAGE TO
PERSONNEL, THE EQUIPMENT, OTHER EQUIPMENT AND THE SITE IN A HAZARDOUS LOCATION.
Only qualified service personnel are permitted to make repairs.
Replace ONLY with genuine Masoneilan parts from GE.
Only Masoneilan parts from GE are permitted. This includes not only the major assemblies but also mounting screws and “O” rings. No
substitutions with non-Masoneilan parts are permitted.
The following summary assures the safe operation of the 12400.
For ambient temperature greater than 70 °C, the user must choose a cable entry and a cable compatible with:
The cable entry and the cable must be compatible with the minimum temperature of -40 °C as indicated on the marking plate.
The cable entry must have an ingress protection level at least equal to type 4X – 6P.
The joints (three pushbuttons, covers thread and O-ring) are greased with one of the following acceptable greases:
It is the user’s responsibility to check the gaskets once a year and in the event of damage to replace the defective parts with
manufacturer's replacement parts only.
For use in dusty hazardous areas, the user must maintain the enclosure to avoid the deposits of dusts, the maximum thickness must be
<5 mm. For safe operation, this can be done only if the local conditions around the device are free of potentially explosive atmosphere.
The user must check the temperature increase on the 12400 head coming from the mechanical part in contact with the 12400 housing or
through the process thermal radiation and ensure it is less or equal than the temperature classification allowed. This must be done in
conformance with EN/IEC 60079-14 and / or national and local regulations applicable for explosible atmospheres.
The user may clean the device, mainly the plastic label, with a wet rag to avoid any electrostatic spark. For safe operation, this can be
done only if the local conditions around the device are free of potentially explosive atmosphere.
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