Submittal Sheet

35 AND 70 LB-IN. NON-SPRING RETURN DIRECT COUPLED ACTUATORS
63-2209—9 6
Installation
After determining the direction of the shaft rotation (cw or ccw),
install the device. For valve linkage mounting, refer to the
instructions shipped with the linkage. For damper mounting,
proceed as follows:
1. Place the actuator onto the damper shaft.
CAUTION
Equipment Damage Hazard.
Improper range stop selection can damage
light-duty dampers.
Be sure to select the proper range stop.
2. If the angle of the damper opening is either 45° or 60°,
close the actuator using the manual declutch:
a. Disengage the hub using the declutch lever; see
Manual Operation (Declutch) section.
b. Rotate the hub until the actuator gear train passes
the proper 45° or 60° setting. (Do not insert the pin
until after the actuator passes this point.)
c. Release the declutch lever.
NOTE: Dampers with 90° stroke do not require the
range stop pin.
3. Insert the range stop pin into the appropriate (cw or ccw)
45° or 60° slot. The range stop pin clips into its final
position only after the pin passes through both actuator
plates (see Fig. 7). The range stop pin should snap into
position and not be removable manually (see Fig. 8).
IMPORTANT
Do not fully tighten the mounting screw; the actuator
must be allowed to float.
4. With the actuator placed in its final position, fix the
mounting tab in position with a 1/4 in. (6 mm) screw or
pin. See Fig. 6.
5. Position the damper in the open position and securely
tighten the Allen screws into the damper shaft.
Fig. 6. Proper actuator mounting to prevent rotation.
Fig. 7. Range stop pin properly inserted.
Fig. 8. Lifting range stop pin out of its slot.
Minimum Position Setscrew
Certain ML6161, ML6174 and all ML7161, ML7174 models are
equipped with two tapped holes located in the plastic housing
at the top of the actuator. These holes can be used with the
minimum position setscrew and locknut inside the 4074ENJ
Bag Assembly (see Fig. 9). The setscrew provides for a 0° to
30° minimum position adjustment.
NOTE: Before starting operation, note that the 1/4 in. (6 mm)
minimum position setscrew limits closing motion,
while the range stop pin limits opening motion.
M20884
1MM
(1/32 IN.)
1MM (1/32 IN.)
60
45
45
60
CW
CCW
COM
RANGE STOP PIN
ACTUATOR PLATES
M10246A
SCREWDRIVER
M2065