Waukesha Cherry-Burrell
Introduction
April 2008
95-03083
Page 7
Introduction
For valve information, please refer to the specific publication assigned to the type of valve you have. For additional
product information, please see our web site at http://www.spxprocessequipment.com/sites/wcb/literature.asp.
General Information
Information in this manual should be read by all personnel involved in installation, setup, operation and maintenance of
W-Series control tops and switch-only options.
NOTE:
In this manual, “stem-raised” is understood to be when the valve stem is fully retracted into the actuator. “Stem-
lowered” is understood to be when the valve stem is fully extended out from the actuator.
NOTE:
The terms "control top" and "control module" are used interchangeably.
Models and Specifications
Control Modules are used with pneumatically actuated valves to protect and deploy stem feedback switches and/or air
solenoid valves. These NEMA 4X enclosures mount on top of the valve actuator. An indicator stem extends into the
control top, providing a position measurement surface for the feedback switches.
This manual covers the W-Series 2-piece control top. The W-Series 3-piece control top (O&M manual 95-03077) is
obsolete but service parts are available. W-Series 2-piece control modules are retrofit-able on all W-Series valves shipped
since 1995.
Materials
Operating Parameter
Temperature
W-Series control modules are designed to work in a temperature environment of 32°F to 140°F (0° - 60°C). W-Series
control modules are intended for normal exterior cleaning procedures. See "Care of Acrylic Control Top Covers" on page
6 for more details.
Figure 1: 2-Piece Control Top
A
Stainless steel base
B
Set & Forget switch
C
1-piece, see-through acrylic top
D
O-ring seal
E
Mounting cup
F
Attachment set screws
G
Indicator stem
H
Target (inside switch)
I
Vent Plug (control module)
J
O-Ring
K
Switch Bracket
L
Proximity or Micro Switch