User Guide

F-27087-6 Copyright 2010 Schneider Electric All Rights Reserved. 11
Manual Valve Positioning of Mx41-6043 and Mx41-6083 Non-Spring Return
Actuators
Before applying power to a ball valve assembly on a new installation, it may be desired to
manually open the valve for system filling at startup. Manually open the ball valve assembly
according to Figure-8 (current-style bracket) or Figure-9 (old-style bracket).
Note: The Mx41-6043 and Mx41-6083 series actuators feature a manual override that
allows them to be manually positioned for system startup (or emergencies).
1 Disconnect power
from the actuator.
5 The actuator returns to
normal operation when
power is applied.
4 Release the manual release
slider or button, allowing the
gears to re-engage.
1 Caution: Only use the manual override when the actuator
drive motor is not powered. Engaging the manual override
when the actuator is powered will cause damage to the gears.
1
3
Manual Release
Slider
2 Press and hold the manual
release slider to disengage
the gears.
1
MX41-6043
MX41-6083
2
3 It may be necessary to reset a floating
controller driving an MF41-6043 actuator.
2-Way 3-Way Mixing
Flats on Sides
of Shaft
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
2 The flats on the sides of the shaft
indicate the position of the ball port.
3 Using a 10 mm open-end wrench or
adjustable wrench (crescent wrench),
rotate the shaft fully CCW (90° rotation)
to open the valve.
Figure-8 Manually Opening Valve Assemblies Having Mx41-6043 Series Actuators.