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Promet EExd User's Manual
G.4
Special Conditions of Use
1.
Do not open when an explosive gas atmosphere may be present.
2.
External cables shall be compatible with a temperature of 93°C (T5) or 109°C
(T4).
3.
Maximum process pressure shall not exceed 138 barg.
4.
Maximum combined process flow into the enclosure shall not exceed 1.5 LPM.
5.
All process lines shall be purged to ensure the process gas or liquid is above its
upper explosive limit before applying power.
6.
Where painted or powder coated, the enclosures could present an electrostatic
hazard. Clean only with a damp or anti-static cloth.
7.
The enclosure is to be earthed externally using the earth point provided.
8.
Only suitably ATEX / IECEx certified (as appropriate) cable glands and blanking
elements shall be used.
Refer to the relevant sections within this manual for the connection, wiring and cable
glanding requirements.
G.5
Maintenance and Installation
The Promet EExd must only be installed by suitably qualified personnel and in accordance
with the instructions provided and the terms of the applicable product certificates.
Maintenance and servicing of the product must only be carried out by suitably trained
personnel or returned to an approved Michell Instruments' Service Center.
Flame paths are not intended to be repaired.
Michell Instruments
APPENDIX G
69
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