What holds the damper in position after the balancing task is finished?
The gear train design of the ZSA-1 actuator insures that the output shaft cannot move when power is removed from the drive motor. Whatever position the damper blades assumed when the power is disconnected by the balancing technician will be its locked position. Readjusting the balancing damper at a future date is just a matter of reenergizing the actuator with the RCM.
