Honeywell ml6284 User Manual

5

63-2505

A typical actuator mechanical connection is shown in Fig. 4; 

wiring diagrams in Fig. 5 through 10.

The ML6284 Non-Spring Return Direct Coupled Damper 

Actuator can also be three-point mounted using the two front 

gear housing slots and the adapter bracket. Two screws are 

secured through the two front gear housing slots and the 

adapter bracket positioned to secure the rear of the actuator. 

Three point mounting is used for foot mounting the actuator or 

internally mounting the actuator in the duct when direct shaft 

coupling is not possible.

Do not use the actuator as a shaft bearing. The 

actuator must be used only to supply rotational torque. 

To prevent damage to the actuator, avoid any side 

loads to the actuator output coupling bearings.

Before installing the ML6284 on the damper shaft, determine 

the opening direction of the damper shaft (see Fig. 2) to 

correctly connect the wiring. 

1. Place the ML6284 Non-Spring Return Direct Coupled 

Damper Actuator over the damper shaft.

2. Position the actuator for best access to the actuator 

damper shaft locking screw.

3. Install the mounting bracket (see Fig. 2) and adjust it so 

the bracket tab is midway in the actuator slot. Mark the 

screw holes for installing the mounting bracket on the 

damper housing.

4. Remove the mounting bracket and actuator.

5. Drill or center punch the starting holes for the mounting 

bracket screws (or use no.10 self-tapping sheet metal 

screws—not  supplied).

6. Place the actuator and mounting bracket back into 

position over the damper shaft and install the mounting 

bracket screws.

7. Move damper shaft either fully clockwise 

or fully 

counterclockwise

. 

8. Fully depress and hold disengage button while moving 

the actuator hub either fully clockwise

or fully 

counterclockwise

to match the damper shaft. 

Release disengage button.

9. Tighten the two 8 mm by 12 mm long set screws firmly 

against the damper shaft (maximum tightening torque is 

100 lb-in.).

Disconnect power supply before wiring to prevent 

electrical shock or equipment damage.

All wiring must comply with local electrical codes, ordinances 

and regulations. The ML6284 is designed for use with a Class 

2 power supply. Voltage and frequency of the transformer 

used must correspond with the characteristics of the motor 

and those of the power supply. Standard electrical connection 

is shown in Fig. 4. See Fig. 5 and 6 for typical wiring 

connections.

The ML6284 has a plastic housing with two taped holes  on 

the end of the device for 1/2 in. conduit fittings.

ML6284 Models with Factory-mounted Auxiliary Switches 

(See Fig. 7)

ML6284C,F models have two nonadjustable low voltage rated 

spdt auxiliary switches that are factory set to make common to 

normally open at 12° and 82° rotation from the closed  

counter-clockwise stop. See Fig. 7.

M7876

ACTUATOR 

SLOT