User Guide

4 Copyright 2010 Schneider Electric All Rights Reserved. F-27087-6
Installation of Mx40-704x Spring Return Actuators
Install the spring return actuator onto the ball valve according to Figure-1.
Note: Only the 35 lb-in. and 70 lb-in. actuators listed in Table-1 are compatible with
Vx-2x13-5xx-9-xx Ball Valve Assemblies.
Figure-1 Installation of Spring Return Actuator on Ball Valve.
1 For Normally Open 2-Way and
Normally Open A to AB 3-Way
Verify that the valve is in the open position (A to AB open on 3-way valves).
For Normally Closed 2-Way and
Normally Closed A to AB 3-Way
Verify that the valve is in the closed position (A to AB closed on 3-way valves).
2 For Normally Open 2-Way and
Normally Open A to AB 3-Way
Slide the actuator straight down over
the valve shaft and onto the mounting
plate, with the "L" side facing up. On
MS40-7043 models, the rotation
switch must be in the "L" position.
For Normally Closed 2-Way and
Normally Closed A to AB 3-Way
Slide the actuator straight down over
the valve shaft and onto the mounting
plate, with the "R" side facing up. On
MS40-7043 models, the rotation
switch must be in the "R" position.
3 Align the actuator with the
mounting plate, then slide the
anti-rotation clip half way into the
slot on the bottom of the actuator.
MX40-704X
5 Using a 10 mm wrench or
socket, evenly tighten the
two nuts on the shaft
clamp, applying 8 to 10 lb-ft
(11 to 14 N-m) of torque.
Clip NYBA-200
Closed
(Fully CW)
Outlet
Inlet
Outlet
Inlet
Open
(Fully CCW)
B Full Open to AB
(Fully CW)
AB
A
AB
A
A Full Open to AB
(Fully CCW)
2-WayShaft Style 3-Way Mixing
Flats on
Sides of
Shaft
Index Mark
on Top
of Shaft
1
Open
(Fully CCW)
Outlet
Inlet
Closed
(Fully CW)
Outlet
Inlet
A Full Open to AB
(Fully CCW)
AB
A
B Full Open to AB
(Fully CW)
AB
A
Current
Old Style
1 The flats on the sides of the
shaft (or the index mark on top of
old-style shafts) indicate the
position of the ball port.
4 Tighten the wing nut to secure
the anti-rotation clip in place.
Be careful not to over-tighten
the wing nut.