Accutronix MX Actuator Subassembly
Accutronix MX Maintenance & Spare Parts Manual 130-12000 Revision B • November 2002
2.2 Product Information
2.2.1 Product Description
Your MX actuator controls the opening and closing travel of valves and other actuated devices. OPEN
and CLOSED limits are protected by an absolute encoder that provides optical sensing of valve position
and measures valve position in both motor and handwheel operation. No battery or backup power
supply is required. Output torque is derived from motor speed, temperature, and voltage. If the preset
torque is exceeded, the motor shuts off. As a result of this reliable and advanced protection
technology, all valve and other actuated devices are protected from potential damage from overload,
improper seating, and foreign obstructions.
A range of control and network options are available and very simply added to the control capabili-
ties already available on a standard actuator. Contact your local Limitorque distributor or Limitorque
sales office for further information.
2.2.2 Storage
Storage Recommendations
Your MX actuator is double-sealed and weatherproof as shipped providing all compartment covers and
cable entry plugs are left intact. Actuators should be stored in a clean, dry, protected warehouse until
ready for wire-up. If actuators must be stored outdoors, they should be stored off the ground, high
enough to prevent being immersed in water or buried in snow.
If your unit incorporates a rising stem application, it may be shipped with a plastic cap over the drive
sleeve. If so, install a pipe plug or protective stem cover to protect the drive sleeve from possible
corrosion.
Preferred Storage Orientation
Your MX actuator should be stored with the motor and terminal compartment in the horizontal
position to obtain optimum service life.
2.2.3 Unit Weights
Table 2.1 – Unit weights
Unit Lbs Kg
MX-05 52 24
MX-10 65 29
MX-20 109 49
MX-40 133 60
MX-85 259 117
MX-140 300 136
NOTE: Weights include stem nut and lubricant.
2-2
Flow Control Division
Limitorque Actuation Systems
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