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9.
Maintenance
– Before carrying out any work on the
device, power off the instrument or make
sure the local conditions are free of
potentially explosive atmosphere for safe
opening of the cover.
– These operations must be done in
conformance with EN 60079-17 and / or
national and local regulations applicable
for explosible atmospheres.
– 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.
10. Special Conditions of Work
Based on 2014/34/EU directive, a training session
must be followed by person usually recognized to
use apparatus in explosible atmospheres.
© 2020 Baker Hughes Company. All rights reserved.
• Check that no part of the 496 is damaged.
In the event of damage replace the defective
parts with genuine manufacturer's replacement
part.
• Pay particular attention to the following:
–
Check device, mechanical link and general aspect.
–
Check the cable gland and the electrical
connections.
–
Check the condition of the O-ring (10) of cover (12)
and O-ring (7) of the shaft (11).
–
Make sure that shaft (11) is not worn out or
damaged.
–
If the shaft (11) must be removed, make sure the
original circlips (8) is put back in place. Check that
neither the housing nor the shaft are damaged.
• Instruments installed in zones 20, 21 and 22 must
be cleaned to prevent any dust build up on the
walls. See instruction §11.1 b&c for safe cleaning.
This training session is not supported by Dresser
Produits Industriels S.A.S.
Masoneilan 496 Series Position Transmitter ATEX Instruction Manual | 21
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