The Crawford CDM9 operator, when paired with the ECS 950 control unit, is a standard setup for industrial overhead sectional doors. Installation involves mounting the drive unit to the door shaft and configuring the control system's limits. 1. Mechanical Installation of the Drive Unit
: Disengage the door, manually move it to a position 1.5 meters above the floor, then re-engage the operator. crawford cdm9 950 installation manual