Baker Hughes Masoneilan SVI II AP Series, Quick Start Manual

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Masoneilan SVI II AP Digital Positioner Quick Start Guide = | 101
© 2020 Baker Hughes Company. All rights reserved
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ES-699 Rev AE
Page 11 of 13
8.9 Entity Requirement
Cable capacitance and inductance plus the I.S. apparatus unprotected capacitance
(Ci) and inductance (Li) must not exceed the allowed capacitance (Ca) and
inductance (La) indicated on the associated apparatus. If the optional Hand Held
Communicator is used on the Hazardous Area side of the barrier, then the capacity
and inductance of the communicator must be added and the communicator must be
agency approved for use in the hazardous area. Also, the current output of the
Hand Held Communicator must be included in the current output of the associated
equipment.
The barriers may be active or passive and from any certified manufacturer as long
as the barriers comply with the listed entity parameters.
8.10 Use in dust atmosphere
Dust-tight conduit seal must be used when installed in dust hazard environments.
8.11 A device which has previously been installed without an approved IS barrier must
NEVER be used subsequently in an intrinsically safe system. Installing the device
without a barrier can permanently damage the safety related components in the device
making the device unsuitable for use in an intrinsically safe system.
9 REPAIR
THE FLAMEPATHS OF THE EQUIPMENT ARE NOT INTENDED TO BE REPAIRED.
CONSULT THE MANUFACTURER IF REPAIR OF A FLAMEPATH JOINT IS NECESSARY.
WARNING: EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILITY FOR USE IN A HAZARDOUS LOCATION.
Only qualified service personnel are permitted to make repairs
On the SVI II AP, replacement of the pneumatic cover, electronics module, the
pneumatic relay, the I/P, and the main cover (with or without display) are the only
field repairs permitted. Replace ONLY with genuine Masoneilan parts. Only parts
supplied by Masoneilan are permitted. This includes not only the major assemblies
but also mounting screws and “O” rings. No substitutions with non-Masoneilan parts
are permitted. Detailed replacement procedures are described in the SVI-II AP
Quick Start Guide. The following summary assures the safe operation of the SVI-II
AP. For more information, contact Masoneilan Dresser LLC. 50 Thomas Patten Dr.
Randolph MA 02368 USA.
9.1 Main Cover
Make sure that:
The gasket is seated in the groove in the housing flange.
No wires or retaining cable can be trapped under the cover flange.
The flange area is not corroded and the surface is not scarred.
The four cover bolts are securely tightened.
Secure the four cover bolts by applying a torque of 55±5 in-lbs.