Greenheck MA6 Series (455410) - Manual (Page 4)

9. Wire the actuator according to the appropriate wiring
illustration that identifies the actuator’s electrical
connections. Wiring should be per an approved
project or job wiring diagram and must comply with all
applicable electrical codes.
10. Apply power to the actuator.
The damper blades should fully open or close and
return to the fail position when power is disconnected.
If they do not, adjustments can be made by resetting
the crankarm position on the damper or actuator shaft,
or adjusting the 2 in. dimension discussed in Step #6d.
note: Motors in models MA6-318 and MA6-418 switch to
a hold winding at the end of their stroke. Motor may
overheat if stalled before cycling to the end of the
power stroke.
L1 or H
Aux. Switch (-500 Models)
L2 or G
Thermostat or Switch
Actuator
NC
NO
COM
Wiring Diagram for MA Series Actuators
H
G
Actuator Part Power Aux. VA* VA*
Holding number supply switch running
MA6-305 24 No 56 56
MA6-305-500 24 Yes 56 56
MA6-405 120 No 48 48
MA6-405-500 120 Yes 48 48
MA6-318 24 No 92 32
MA6-318-500 24 Yes 92 32
MA6-418 120 No 108 42
MA6-418-500 120 Yes 108 42
Copyright © 2007 Greenheck Fan Corporation
455410 MA6 series Rev 4 September 2007
* Divide VA by the actuator voltage to get the amp draw.