Electrical Connection, Installation And Start-Up - Baker Hughes Masoneilan 496 Series Instruction Manual

7.

Electrical Connection, Installation and Start-up

•
Comply with current national and local regulations for electrical installation work.
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Must be installed and put into service in conformance with EN 60079-14 and/or national and local
regulations applicable for explosible atmospheres.
•
Before carrying out any work on the device, power off the instrument or make sure that the local
conditions in the potentially explosive atmosphere permit – the safe opening of the cover.
•
Connect the wires to the instrument terminals, taking care of complying with polarities and
maximum voltage allowed.
• Before power up or after doing any work on the device always check the cover (12) is fully
screwed, O-ring (10) is free of any damage and security screw (9) is well locked.
• Check the earth terminals are well connected.
Note: Before installation, check that the device is undamaged. In the event of damage, inform the
Manufacturer whose address is shown on the serial plate.
7.1 Conduit entry in flameproof application
The connections can be done with different variations taking into account approved manufacturer and
requested approvals:
•
A cable entry of a certified type II 2 GD Ex d IIC / Ex tb IIIC can be mounted directly on the single
¾" NPT (ANSI/ ASME B1.20.1) housing conduit connection.
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Adaptor or reducer if ATEX apparatus certified or IECEx (type Cooper CAPRI CODEC)
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For multiple cable entries (3 maximum), the adaptor Y237 "Masoneilan" can be used for ATEX
application only.
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If one Y237 input is not used, the conduit will be closed by a plug if ATEX apparatus certified
(type Cooper CAPRI CODEC)
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If two Y237 inputs are not used, the Y237 must be suppressed.
•
The cable entry with or without its adaptor/reducer and the Y237 with its cable entry must be installed
in conformance with Annex III.
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