Flowserve MX-85 Actuator - Manual (Page 12)

Flow Control
Limitorque Actuation Systems
4 MX-85/140 Maintenance and Spare Parts FCD LMAIM1341-00
2.1 MX Actuator Subassembly Components
Table 2.1 – MX Actuator Subassembly Components
No. Description
1 Top-mounted handwheel
2 Drive sleeve
3 Worm shaft
4 Motor
5 Declutch Lever
6 Encoder
7 Accutronix Control Panel (ACP)
8 Control module
9
Optional bases
Thrust Base type:
• A1 = Standard thrust base
• A1E = Extended-reach thrust base
10
Baseplate-type B4 with stem nut options type:
• B4 = stem nut with variable bore and key
• B4E = extended-reach stem nut with variable bore and key
11 Handwheel worm gear
12 Side-mounted handwheel (not shown)
13 Encoder drive cartridge
14 Terminal block
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 is available and very simply added to the control capabilities 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.