Flowserve ACE User Manual

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway Phone: [phone]
Flow Control Division Springville, Utah 84663-3004 Facsimile: 801 489-2228

www.flowserve.com

SR Limit Switch Method

Accord Controls

CENTURA™ ACE Series

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.

actuator to determine its operating range, taking note of
any explosion safety requirement. The electric actuators
are factory set for 90 degree operation.

Caution:

for rubber lined butter fly valves & dampers
or applications that may back drive the unit.

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:

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 slow­blow fuse). The actuator should be wired and grounded
in accordance with Local and National Electrical Codes.

Use heavy duty brake option ‘K’

Some valves have manual stops; remove if

Installation

1. This section of the instruction sheet applies to the on­off 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.

Caution:

To prevent ignition of hazardous atmospheres,
keep unit tight while circuits are alive. Disconnect
supply circuit before opening.

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

FCD ACAIM0075-00 (AC-75) 08/04

©

2004, Flowserve Corporation, Printed in U.S.A.

Caution:

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.

Consult factory when wiring multiple

Page 1 of 8

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway Phone: [phone]
Flow Control Division Springville, Utah 84663-3004 Facsimile: 801 489-2228

www.flowserve.com

SR Limit Switch Method

Accord Controls

10. To adjust closed position, repeat step 9 with actuator in
desired closed position.

11. Operate the unit several times and recheck position.
If unit is still out of adjustment, reset the
cams by following steps 9 and 10.

12. Installation in hazardous areas requires that the
electrical leads be sealed within 18 inches of the
enclosure in accordance with Local and National
Electrical Codes.

13. Open conduit entries must be closed up after
installation is complete using a close-up plug engaging
at least five full threads and approved for use in
hazardous locations.

14. 60Hz actuator motors may be run on 50 Hz supply.
However, the cycle time increases by 1.2 times and the
duty cycle decreases by a factor of approximately 25%.
The rated torque does not change.

Manual Override

The principle of the design is such that when the manual
override shaft is in the up position, the shaft is disconnected
from the drive train. When the shaft is in the down position
it does two things. One, the shaft trips a switch to discon­nect the power to the motor and two, it releases the brake.
By releasing the brake the motor can back drive along with
the output. For 90 degree operation, the 250 in-lbs unit
requires 1.6; the 700 in-lbs unit requires 3.1; the 1000 in-lbs
unit requires 4.2; and 1500 in-lbs unit requires 6.3.

Automatic Operation

1. Pull hub away from the actuator cover.

2. The motor is now electrically connected and ready
for automatic operation.

3. The manual override shaft will freewheel.

Position Indication Stickers:

Attached to the inside of the cover is a set of stickers
with the words “CLOSED” and “OPEN”. These stickers
are to be attached to the outside of the actuator near
the base between the mounting feet. The stickers have
an orange triangle on them, such that when properly
attached to the actuator, they will line up with the
triangle on the output shaft. A sticker can be placed on
either side of the unit to produce a visual indication of
the opened and closed position of the actuator.

Caution:

Turn manual override shaft slowly.

DO NOT jerk.

Manual Operation

1. The actuator cover should be securely attached.

2. Depress hub toward actuator cover.

3. Rotate the manual override shaft slowly; do not force.

4. The motor is now electrically disconnected.

5. Turn the manual override shaft clockwise for clockwise
output.

6. Do not rotate actuator past full clockwise or counter­clockwise position.

FCD ACAIM0075-00 (AC-75) 08/04

©

2004, Flowserve Corporation, Printed in U.S.A.

Page 2 of 8

3-Position Control/Dribble Control

Installation, Operation and Maintenance Instructions

Flowserve Corporation 1350 N. Mountain Springs Parkway Phone: [phone]
Flow Control Division Springville, Utah 84663-3004 Facsimile: 801 489-2228

www.flowserve.com

SR Limit Switch Method

Accord Controls

FCD ACAIM0075-00 (AC-75) 08/04–

©

2004, Flowserve Corporation, Printed in U.S.A.

Page 3 of 8