VSX4 and VSX8 Series Controller
!
WarNINg
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fi re causing property damage and
personal injury or death.
Fisher
®
controller must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations and Emerson Process
Management Regulator Technologies,
Inc. (Emerson™) instructions.
Only a qualifi ed person must install
or service the VSX4 and VSX8 Series
controller. If a leak develops or if the
controller continually vents gas, service
to the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualifi ed
personnel may result in improper
adjustment and unsafe operations which
may result in equipment damage or
personal injury.
Figure 1.
VSX4 and VSX8 Series Controller
The VSX4 and VSX8 Series controller do
not activate in response to fi re, seismic
and lightning events.
Introduction
Scope of the Manual
This Instruction Manual provides installation,
adjustment, maintenance and parts ordering
information for the VSX4 and VSX8 Series controller.
Instructions for other equipment used with the
controller, such as pressure regulators, can be found
in separate instruction manuals.
TyPE VSX4
TyPE VSX8
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Startup and Shutdown . . . . . . . . . . . . . . . . . . . . . . . . .8
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Controller Spring Adjustment . . . . . . . . . . . . . . . . . . . .8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
VSX4 and VSX8 Series
Instruction Manual
Form 5867
January 2015
D103127X012
www.fisherregulators.com
