User Manual

3
Worcester Actuation Systems Series 75 Electric Valve Actuator FCD WCAIM2013-01 - 08/04
fl owserve.com
Description
Worcester Actuation Systems/McCANNA Series 75 actuators are
reversible electric quarter-turn valve actuators. Standard units can
provide up to 3000 in-lb of torque and have capacitor-start, capacitor-
run motors and permanently lubricated gear trains. These actuators are
equipped with integral thermal overload protection (AC motors only)
with automatic reset and internal adjustable limit switches. In the event
of electrical power failure, W, X and Z models feature manual override
capabilities.
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WARNING: Series 75 actuators are electromechanical
devices subject to normal wear and tear. Actuator life is
dependent upon application and environmental conditions.
If applied in hazardous services, such as but not limited to,
media temperature extremes, toxins, fl ammables, or other
services where improper or incomplete operation could
produce a safety hazard, it is incumbent upon the system
designer and the user to provide proper warning devices
such as temperature sensors, oxygen sensors and fl ow
sensors. At elevated temperatures the duty cycle has to be
derated, consult factory. Flowserve also recommends that
the optional auxiliary limit switches be used for monitoring
and/or electrical interlock. Heater with thermostat as well
as drain/breather fi tting (V53 option) are recommended for
humid environments when moisture may condense inside
the housing. Please note that weatherproof enclosures will
“breathe” over time and condensation within the housing
will result.
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CAUTION:
For actuators with dual DC motor module, failure of
one motor may mechanically damage the gear train.
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CAUTION:
Flowserve recommends that all products, which
must be stored prior to installation, be stored indoors, in an
environment suitable for human occupancy. Do not store
product in areas where exposure to relative humidity above
85%, acid or alkali fumes, radiation above normal background,
ultraviolet light, or temperatures above 120°F or below 40°F
may occur. Do not store within 50 feet of any source of ozone.
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CAUTION:
For wiring of actuator, including options, please refer
to wiring diagram(s) located inside of actuator cover. Wiring
diagrams are also included in this manual for reference.
Installation
A. Attach mounting bracket to actuator using four (4) cap screws and
lockwashers, provided in mounting kit, and tighten securely. For
small size top mount style valves, attach bracket such that bracket
nameplate will be to side of valve.
For mounting to 818/828 Series valves, insert ISO locating ring into
groove on bottom of actuator before attaching to bracket. Note:
Ring can be permanently held in groove by applying Loctite to ring
before inserting in groove.
B. Attach bracket/actuator assembly to valve as follows:
NOTE:
If cross-line mounting of actuator is desired, note the
following:
Mount the actuator with conduit hole perpendicular to the fl ow axis
(centerline) of the valve and reverse the open/close decals.
For diverter and three-way valves with V1 porting, and CPT valves,
also see Electrical Installation and Adjustment Section, Paragraph
D, for cam and limit switch adjustments to facilitate cross-line
mounting operation.
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CAUTION:
Ball valves can trap pressurized media in the
cavity. If it is necessary to remove any valve body bolts,
stem nuts, or remove valve from the line, and if the valve is
or has been in operation, make sure there is NO pressure
to or in the valve and operate the valve one full cycle.
1. Valve Models Top Mount 44 (¼"–2"), 45 (2½"–6"),
51/52 (½"–10"), 151/301 (3"–6"), Top Mount 59 (¼"–4"),
WK70/WK74 and H71 (½"–2"), 818/828 (2"–8"), 82/83
(½"–10"), and 94 (½"–6"):
NOTE:
For above listed valves, it is not necessary to remove
any valve body bolts or remove valve from line in order to
mount actuator.
a. Close valve (for valves ¼"–2", the valve is closed when
fl ats on valve stem are perpendicular to the line of fl ow; for
valves 3" and larger, where the valve stem is square, the
indicator line on top of stem will be perpendicular to the
line of fl ow or check ball position for closure).
b. If any valve information is marked on stop plate or handle,
it will be necessary to transfer this information to the
bracket nameplate.
For ¼"–2" 44 and ½"–2" WK70/WK74, ¼"–1½" 59 and
½"–1½" H71 Series top mount style valves and ½"–2"
51/52, ½"–1½" 82/83 Series valves with high cycle stem
packing as standard, remove handle nut, lockwasher,
handle, separate stop plate (if any), retaining nut and stop