Honeywell ML6185 - Manual (Page 11)

11 63-2483—2
ML6185
CHECKOUT
Checkout
The ML6185 Direct Coupled Actuator can be checked
out either directly or by using a controller.
IMPORTANT: When power is interrupted, the actuator
returns to the normal starting position using the spring
mechanism. When power is restored, the controller
input will not operate the actuator until the spring is
fully wound and locked. The spring winding process
takes approximately 100 seconds, depending on the
number of degrees of spring return remaining at power
interrupt (i.e., 10
°
of spring return remaining takes 10
seconds). (If the actuator is not in the closed position,
it will run to the closed position as the spring is
winding.) Once the spring is locked in its fully wound
position, the actuator responds to inputs to the red-to-
blue or red-to-yellow leadwires.
DIRECT CHECKOUT
1. Mount the actuator for the required application (either
cw or ccw rotation to open the damper).
2. Check the damper position and make sure that 24 Vac is
present on the red and black leadwires.
3. Make sure the actuator spring is fully wound and
locked by applying power for at least 100 seconds.
4. Connect 24 Vac to the appropriate leadwires (red to
blue or red to yellow) to move the damper to the opposite
position. The ML6185 should drive the damper.
5. If the actuator does not run, verify that the actuator is
properly installed for either cw or ccw rotation.
6. If the actuator operates in the opposite direction than
desired, reverse the blue and yellow leadwires.
7. If the actuator is correctly installed and still does not
run, replace the actuator.
CONTROLLER CHECKOUT
1. Adjust the setpoint of the controller to call for cooling.
Observe the actuator.
2. If the damper is closed, it should begin to open.
3. If the damper remains closed, move the setpoint of the
controller farther below the room temperature.
4. If the damper still does not move, check for the
presence of 24 Vac in the input.
5. Make sure the actuator spring is fully wound by
applying power for at least 100 seconds.
6. If 24 Vac is present and the actuator does not operate,
reverse the controller leadwires to determine if the device
was miswired.
7. If the wiring is correct and 24 Vac is present on the input
terminals but the actuator does not run, replace the actuator.