Flowserve Mechanical Brake to 10-23 75 120 VAC Actuators - Manual (Page 2)

© 2004 Flowserve Corporation, Irving, Texas, USA. Flowserve is a registered trademark of Flowserve Corporation. FCD WCAIM2072-00 Printed in USA.
(Part IOM 16434)
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its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous
applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings
for all possible applications. The purchaser/user must therefore assume the ultimate responsibility for the proper sizing and selection, installation, operation, and maintenance of
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8. Connect the open loop end of the spring (6) to the smaller hole
in the brake arm. Place the closed loop end of the spring over
the smaller post (closer to actuator shaft) of the brake mounting
plate and secure into position with the retaining clip.
9. Check that the brake arm clears the brake disc when the coil
plunger is bottomed into the coil housing. Clearance between
brake arm and brake disc should be .020" to .030" (check with
feeler gage). Also ensure that pad on brake arm fully contacts
brake disc when plunger is released. Securely tighten the 4
motor screws holding the brake solenoid mounting plate in
proper/final location. Releasing the plunger causes the springs
to return the brake arm to the brake disc, which provides the
braking action.
II. Wiring
1. Connect the two brake coil leads having the ¼" quick connect
to the actuator’s motor capacitor. Refer to schematic-wiring
diagram inside actuator cover.
2. Using the cable tie, fix coil leads into a position away from any
rotating parts.
III. Testing
1. Energize actuator for rotation in both open and closed direc-
tions. At the rated actuator voltage, the brake coil is energized
and moves the plunger to release brake arm. Clearance of .020"
to .030" must exist between the brake arm and the brake disc
when power is applied to the actuator.
2. If the brake arm is too close to the brake disc, realign the coil
housing so that coil plunger can move farther toward the center
of the actuator, permitting more movement of the brake arm.
3. Plunger chattering indicates a low supply voltage. If actuator
voltage is at the rated conditions, realign coil housing so that
coil moves away from the center of the actuator to reduce
plunger movement.
4. All coil adjustment is done in small increments of .015 inches
or less.
5. Additional adjustment may be done by moving mounting plate
toward/away from actuator shaft.
6. Once proper operation of the brake is verified, replace
actuator cover.
FLOWSERVE FLOW CONTROL
Worcester Actuation Systems
5114 Woodall Road
P.O. Box 11318
Lynchburg, VA 24506-1318
Phone: 434-528-4400
Fax: 434-845-9736
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