User Guide

MS40-704X Series Installation

Note:

The MS40-704X series actuator comes equipped with standard universal mounting

clamp. For damper shafts larger than 5/8" (16 mm) in diameter, the AM-710 universal

mounting clamp is required (order separately). The AM-710 clamp accommodates shafts

sizes up to 3/4" (19 mm) diameter shafts.

Shaft Rotates

Clockwise

To Open

Shaft Rotates

Counterclockwise

To Open

A - Left

A - Right

This step determines

shaft rotation. Linkage

may change damper direction.

Long Shaft

Short Shaft

Min. 3 1/2" (90 mm)

3/8" to 3/4" Diameter (10 mm to 20 mm)

3/8" to 1/2" Square (10 mm to 13 mm)

Min. 3/4" (20 mm)

Move the damper to its normal position. Verify the controller action is set to match the

damper application.

Normally closed damper: when damper is closed, actuator position indicator should

be at 0°. When damper is open,

actuator position indicator should be at 90°.

Normally opened damper: when damper is open, actuator position indicator should

be at 0°. When damper is closed, actuator position indicator should be at 90°.