User Guide

MS4X-707X and MS4X-715X Series Installation

Caution:

Do not drill additional holes in the actuator body. Six pre-drilled holes are located

on each side, under the label, to accept #10-24 thread-forming screws for mounting

accessories.

Note:

The MS4X-707X and MS4X-715X series actuators come equipped with standard

universal mounting clamp installed. For damper shafts larger than 3/4" (19 mm) in

diameter, the AM-687 universal mounting clamp is required (order separately). The

AM-687 clamp accommodates round shaft sizes up to 1.05" (27 mm) in diameter or 5/8"

(16 mm) square shafts.

Caution:

The MS41-707X and MS41-715X actuators are equipped with a manual

override.

• The manual override to be used only when power is not applied to the unit.

• If the universal clamp is not set to 0° on the position indicator, manually wind the

actuator in the direction indicated with hex wrench from -5° to 0° and lock with a

screwdriver.

• When operating manual override, back off 5° from full open mechanical stop to ensure

proper release.

• Do not attempt to use the manual override with actuators mounted in tandem. Damage

to the gear train could occur.

• Using power tools to adjust the manual override will cause damage to the gears.

• To unlock manual override without power, crank the manual override in the direction

indicated a minimum of 5°.

E- Left

E - Right

15. Tighten bracket screws.

x 2

Correct clamp mounting

position

(after 5˚ preload)