Flowserve 180 User Manual
180° Rotation,
Center-Off Kit
For 10-30 75 Electric Actuators
FCD WCAIM2074-00 (Part 19530)
Installation
NOTE: This kit should not be used with actuators with extra limit
switches. To add a center-off kit to an actuator with more than two
switches, consult the factory. The differences for 75 DC actuators
are either in parentheses or stated separately.
I. Changing a 90° actuator to a 180° actuator
A. Verify 90° operation of the existing actuator.
1. Connect power to terminals 1 and 4 for AC (+ to 1 and
- to 4 for DC). The actuator will turn clockwise to the
initial zero position.
Limit switch #1 on the right side of the actuator (viewed
from the terminal strip) stops shaft rotation in the
clockwise direction (CW). This stop point is 0° and is
the position where a ball valve is closed.
The bottom cam on the actuator shaft (called the #1
cam) actuates this limit switch.
2. Connect power to terminals 1 and 3 for AC (- to 1 and +
to 3 for DC). The actuator shaft will turn counterclockwise (CCW).
Installation, Operation and Maintenance
2. Perform cam adjustment as follows:
a. Power actuator terminals 1 and 3 for AC (- to 1 and
+ to 3 for DC) to move the actuator shaft to its full
counterclockwise (CCW) position as established in
Step A2 of this procedure.
b. Loosen the set screws on the #1 cam and energize
terminals 1 and 4 for AC (+ to 1 and - to 4 for DC)
to move the actuator shaft clockwise (CW) a total of
180° to the new 0 position.
c. At this position, stop the actuator and adjust the #1
cam so that the limit switch (on right side of actuator, viewed from terminal strip) is actuated. Listen
for click. Retighten set screws on the cam.
NOTE: To ensure full rotation of the driven device,
set the actuator cams so that an additional 2° of
rotation can be achieved at each end position.
d. Verify that the actuator moves 180° by energizing
terminals 1 and 3 for AC (- to 1 and + to 3 for DC)
(CCW) and terminals 1 and 4 for AC (+ to 1 and - to
4 for DC) (CW).
Limit switch #2 on the left side of the actuator (viewed
from the terminal strip) stops shaft rotation in the
counterclockwise direction (CCW). This point is 90° and
is the position where a ball valve is open.
The top cam on the actuator shaft (called the #2 cam)
actuates this limit switch.
B. Adjusting actuator cams for 180° operation
1. Once proper operation of cams and switches for 90°
operation is verified: Adjust (see Step 2) the clockwise
cam (the bottom cam or #1 cam) so that the actuator
shaft can rotate 180°— ±90° from the initial zero (#1
limit switch) position.
Remember: The only stop point now common to
the 90 degree actuator is the CCW limit—the position where a 90° ball valve is open.
Flow Control
SEE ENLARGED VIEW "A"
MOTOR
SWITCH 3
SWITCH 4
(IF USED)
MOTOR
1 2 3 4 5 6 7 8 9 1011 12
OVERSIZE FOR
CAM
3
(SHOWN SLIGHTLY
PICTORIAL CLARITY)
CAM
4
LIMIT SWITCH
LEVER
0°
N.P.T. CONDUIT
OPENING
OPEN
90°
CLOSED
4
3
CAM
2
CAM
1
CAM
CAM
4 PLACE
S
SWITCH SP
ACER
SW-2
SW-4
SW-3
SW-1
SPACER
2 PLACES
SPACER
25/30 ONLY
T
SPECIAL
SWITCHES
& CAMS
STANDARD
SWITCHES
& CAMS
{
{
WIRING
EXTERNAL
WIRING
INTERNAL
RED
N.O.
23
THRU
SIZE
S
ONLY
20
C
D
BLACK
C
C
N.O.
N.C.
SW-3
N.O.
N.C.
C
C
SW-1
N.C.
N.O.
N.C.
SW-2
SW-4
HELD CLOSED
1110 12876
ORANGE
543
BLACK
YELLOW
BROW
N
OPEN
CW
OPEN
CLOSE
INDICATION
CLOSE
INDICATION
CENTER-OF
F
POSITIO
N
921
WHITE
NEUTRA
L
COMMON
RE
DCCW
SWITCHES
SPECIA
L
& CAMS
SWITCHES
STANDARD
& CAMS
{
{
BLUE
C
C
SW-4
BLAC
K
RE
D
N.C.
N.O
.
N.O
.
SIZ
E
22
1211
ONLY
GRAY
BLUE
BLUE
C
109
BLUE
8
GRAY
7
ORNG.
BLUE
SW-3
SW-2
C
SW-1
6
BRN.
4
YEL.
53
BLK.
2
RED
C
N.C.
N.C.
N.O
.
N.O
.
N.C.
CENTER
CW
CCW
+
_
RED
1
BLACK
PROVIDED BY CUSTOMER
3P ROTARY SWITCH RECOMM
.
CENTER-OFF POSITION
1ST DIVER
T
90°
OPENING
POSITION
0°
N.P
.T. CONDUIT
2ND DIVER
T
POSITION
180°
180° Center-off Actuator
Series 75 W. X & Z Shown
Standard 90° Actuator
Series 75 W. X & Z Shown
1. Switch configuration is as shown abov
e
(When viewed from the terminal strip
side of the actuator).
2. Actuator shown at 0° position (all the way CW).
3. Cam settings are as follows:
Switch 1. Opens at 0°. Controls
1st divert position.
Switch 2. Opens at 180°. Controls
2nd divert position.
Switch 3. Opens at 89°. Controls
center-off position from
1st divert position.
Switch 4. Opens at 91°. Controls
center-off position from
2nd divert position.
Note: 1. Switches 1 and 2 and cams 1 and 2
are standard. Switches 3 and 4 and
Cams 3 and 4 are center-off type.
2. Use cam spacer as needed to line up
Cam and switch.
Typical View Showing Location of
Center-off Cams & Limit Switches
Set Up at the Center-off Position
VIEW
A
AC DC
Worcester Actuation Systems
II. Installation of the Center-Off Switch and Wiring
Wiring Notes: All wiring to terminal strip should be inserted
only to midpoint of terminal strip. Grounding wires should be
connected to green-colored grounding screw (if present) on
actuator base or to any baseplate mounting screw in actuator.
A. The 180° center-off switches’ lever arms will be located in
the same direction as the existing limit switches’ lever arms.
B. For 10-23 75 Actuators:
Remove the screws holding down the existing actuator limit
switches. Place the spacers provided in the kit between the
existing actuator limit switches (use straight lever arms) and
the new center-off limit switches (use hooked lever arms).
Replace and tighten the limit switch screws securely back
into position. (See diagram for switch identification.)
For 25-30 75 Actuators:
Remove the screws holding down the existing actuator
switches. Be sure the existing spacers remain under the
switches.
Place the spacers provided in the kit between the existing
actuator limit switches (use straight lever arms) and the new
center-off limit switches (use hooked lever arms). Replace
the limit switch screw with new longer screws (4-40 x 1½)
and securely tighten switches in their proper position. (See
diagrams for switch identification and spacer location.)
2 180° Rotation, Center-Off Kit for 10-30 75 Electric Actuator FCD WCAIM2074-00
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