Flowserve WGL UltraSwitch User Manual

Worcester Controls

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Springville, Utah 84663-3004 Cookeville, TN 38501
www.flowserve.com Phone: [phone] Phone: [phone]

UltraSwitch™ WGL, WPL

Description

Worcester Controls UltraSwitch™ limit switch enclosures
provide local and remote position indication for auto­mated valves. They generally feature a Pharos™ visual
indicator with “red=closed” and “green=open” for intui­tive local position determination. The UltraSwitch™ is
available with a number of limit switch options for remote
indication in a variety of electrical applications. They may
also be used as a junction box for direct installation of
solenoid valves.

Installation

UltraSwitches may be installed with a variety of mount­ing hardware. For best results, specify the NAMUR shaft
option and NAMUR mounting hardware (when possible).
These options allow direct coupling to actuators without
couplings, reducing deadband.

Simply bolt bracket to actuator and UltraSwitch™
to bracket, leaving bolts finger tight. For NAMUR
applications the UltraSwitch™ shaft features an integral
alignment pin. This pin must engage the tapped hole in
your actuator shaft. For non-NAMUR applications, make
sure to properly install a coupler between UltraSwitch™
and actuator. Once the UltraSwitch™ is installed with
fasteners loosely tightened, stroke your actuator
two or three times to align the bracket. Then tighten
all fasteners.

Special Hazardous Location Instructions

UltraSwitch™ WPL and WGL series enclosures are
designed to meet NEMA 4 specifications, but may be
used in Division 2 hazardous locations when supplied
with hermetically sealed magnetic proximity switches.
For Division 2 applications utilizing hermetically sealed
switches, conduit seals are not required. See nameplate
information to verify hazardous location suitability.

UltraSwitch™ WXCL and WXML Series enclosures are
explosion proof which allows them to be used in most
Division 1 and 2 hazardous locations. You must install a
conduit sealing fitting within 18 inches of the enclosure
to meet NEC regulations. The WXCL series does feature
internal potting wells. Units provided with factory-sealed
leads do not require external sealing fittings. See IOM
WCENIM2076 for more information.

Wiring Instructions

UltraSwitch™ enclosures feature prewired switches. All
user connections are made at a numbered terminal strip.
A wiring diagram is located inside the cover and indicates
which terminal numbers correspond to switch contacts:
normally open, normally closed common, etc. Simply follow
the wiring diagram and electric code to connect switches
to your system. Note: for all magnetically tripped proximity

switches, the top switch (top and third switches for
4-switch versions) should only be used to indicate the
clockwise position: the bottom switch (second and fourth
switches for 4-switch versions) should only be used to
indicate the counterclockwise position. Any deviation from
these settings may result in erratic indication.

Solenoids may also be wired through the UltraSwitch™
enclosure. At least two auxiliary terminals are included as
standard. A ground screw is also included. Simply wire the
solenoid to auxiliary terminals, then connect power leads to
the opposite terminal side. Be sure to properly ground the
solenoid at provided ground terminal. Note: WPL series en­closures are non-metallic: be sure to connect a ground wire
to this terminal. When two metal conduits are used with the
WPL series, an external grounding strap must be used to
connect to them.

UltraSwitch™ WXCL and WPL series enclosures include two
¾" conduit entries. WGL series enclosures include two ½"
entries. Be sure to follow the National Electric Code regula­tions for rigid conduit, or cable systems as applicable.

CAUTION: Substitution of components may impair suitabil­ity for Zone 2 Increased Safety.

Do not disconnect equipment unless power has been
switched off or the area is known to be non-hazardous.

Cleaning this housing by rubbing should be done in a non­hazardous area.

DEMKO 02 ATEX 130948X

0518 II 2 G EEx me II T4-T6

-40°C ≤ Tamb ≤ +55°C, T6

-40°C ≤ Tamb ≤ +70°C, T5

-40°C ≤ Tamb ≤ +80°C, T4

FCD WCENIM2075-00 04/07

© 2007, Flowserve Corporation, Printed in USA

Page 1 of 2

Worcester Controls

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Springville, Utah 84663-3004 Cookeville, TN 38501
www.flowserve.com Phone: [phone] Phone: [phone]

Adjusting Limit Switches

UltraSwitch™ enclosures feature quick-set cams which
are used to trip the limit switches. These cams are easily
adjusted without tools. Caution: disconnect power before

removing cover when installed in hazardous locations.

Remove cover and set aside. Rotate actuator/valve to full
clockwise (CW) position. Adjust cam(s) associated with CW
as follows:

1. Push or pull cam against spring to disengage it
from splines.

2. Rotate cam CW breaking contact with switch
(or moving magnet away from switch).

3. Continue rotating cam CW just until switch trips.

4. Release cam and reengage it with splines.

Rotate actuator/valve to full counterclockwise (CCW) posi­tion. Adjust cam(s) associated with CCW as described in
steps 1 through 4, except rotate cam(s) CCW.

Note: factory setting is top switch = CW (closed), second
switch = CCW (open), third switch = CW, and fourth
switch = CCW.

Adjusting Pharos™ Position Indicator

Pharos visual indicators are easily adjusted to match
the dome’s clear windows to the rotor’s red and green
quadrants. Simply pry upward under dome “flange” with a
large, flat-bladed screwdriver to remove. Make sure o-ring
is fully seated against the flat dome sealing surface, not

in the dome retaining groove, as shown. Then install dome
in a tilted fashion, engaging one of the dome locking tabs
in the dome retaining groove. Make sure dome windows
line up with rotor quadrants. Finally, using a rubber mallet,
strike dome as shown to engage all locking tabs.

FCD WCENIM2075-00 04/07

© 2007, Flowserve Corporation, Printed in USA

Page 2 of 2