Dresser Masoneilan SVI II AP-2, Quick Start Manual

Page: 56 / 57

ES-699 Rev F
Page 10 of 10
10. Use in dust atmosphere
Dust-tight conduit seal must be used when installed in dust hazard environments.
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 system.
6 REPAIR
WARNING: EXPLOSION HAZARD
–
SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABILITY FOR USE IN A HAZARDOUS LOCATION.
Only qualified service personnel are permitted to make repairs
No part replacement is permitted on SVI II REMOTE.
On the SVI II AP replacement of the Pneumatic Relay, I/P and 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.
6.1 COVER (DISPLAY)
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 scared.
the four cover bolts are securely tightened.
6.2 I/P
Make sure that:
the wire is not damaged when feeding it through the housing.
a single
“
O
”
ring is in place on the wire-sleeve and is not damaged.
the four retaining screws are snug.
inserting the wire sleeve through the housing does not require force.
6.3 Relay
Make sure that:
the five
“
O
”
rings are seated in the base of the relay and are not damaged
the three mounting screws are snug.
Masoneilan Dresser SVI II AP Quick Start Guide
A-16