Flowserve ACE Series Centura - Manual

© 2004, Flowserve Corporation, Printed in U.S.A.
3-Position Control/Dribble Control
SR Limit Switch Method
Accord Controls
Installation, Operation and Maintenance Instructions
Flowserve Corporation 1350 N. Mountain Springs Parkway Phone: 801 489-2234
Flow Control Division Springville, Utah 84663-3004 Facsimile: 801 489-2228
www.flowserve.com
Introduction
The Centura electric actuator is a rotary valve actuator
with output torques from 250 to 1,500 in-lbs. It has been
designed for NEMA 4, 4X, 7, 9 and can come with a
4-20 mA card for modulating service.
Storage
For short and long term storage refer to short and long
term storage conditions CE Actuator.
Maintenance
Centura Series actuators contain a permanently lubricated,
precision cut, heat treated gear train for long, reliable cycle
life. There is no need to change gear train grease; however,
should it become necessary to refill, use a multi-purpose
grease such as DuBois MPG-2.
Permanent split capacitor gearmotors have been equipped
with thermal protectors. After many operations, especially
in warm environments, the motor will heat up. To guard the
motor against overheating, the thermal cut-out blocks
power to the motor and maintains this state until the
motor’s temperature drops to a satisfactory level. This
thermal protection means that the actuator will not move
when overheated. Consideration must be given to the duty
cycle requirements of the actuator.
When replacing the cover, the machined joints must be
clean and clear of any obstructions. The integrity of the
explosion-proof rating depends on the care of these joints.
Installation
1. This section of the instruction sheet applies to the on-
off units. For instructions on Modulating units, please
see the ESP3 Electronic Servo Positioner Instructions.
2. Manually open and close valve to ensure freeness of
operation.
actuator to determine its operating range, taking note of
any explosion safety requirement. The electric actuators
are factory set for 90 degree operation.
4. Mount Accord actuator to valve with Accord
provided mounting hardware to ensure proper
alignment. Use mounting hardware that has 1 and 1/2
times bolt length engagement. (Do not use the manual
override to align actuator shaft to valve shaft, as this
could drive the actuator out of its operating range).
(
NOTE: Some valves have manual stops; remove if
appropriate or set actuator to operate within those
travel stops).
5. Care should be taken to align valve stem properly with
Accord actuator output shaft (misalignment will
cause premature failure of assembly).
6. To connect power to terminal strip of actuator, remove
the cover and locate the terminal wiring schematic
inside the cover.
7. Connect power to terminal strip according to schematic
diagram (power should be fused with a 5 amp slow-
blow fuse). The actuator should be wired and grounded
in accordance with Local and National Electrical Codes.
FCD ACAIM0075-00 (AC-75) 08/04 Page 1 of 8
Caution: Consult factory when wiring multiple
actuators in series or parallel. Serious damage
may result. User must isolate unused winding.
8. Before replacing cover, actuate valve and check to see
if it opens and closes to preferred positions. If valve
does not perform correctly, adjust cams to set
actuator travel properly.
9. Drive actuator to desired open position. The cams are
adjusted in two ways. Simply depress the splined
“Quick-Set” cam against the spring and rotate to
desired location. Or, for very precise applications, turn
the screw inside the cam to move the tip into the leaf
of the micro switch.
CENTURA ™ ACE Series
3. Be sure valve and Accord actuator rotate in the same
direction and are in the same position (i.e., valve closed,
actuator closed). If not sure, electrically operate the
Caution:
To prevent ignition of hazardous atmospheres,
keep unit tight while circuits are alive. Disconnect
supply circuit before opening.
Caution: Use heavy duty brake option ‘K’
for rubber lined butter fly valves & dampers
or applications that may back drive the unit.