Vacuum Motor

Receives vacuum supply from transducer and produces all mechanical motion within the programmer. Control of the vacuum motor mechanism acutates a rotary shaft that drives the air-mix door link, moves the blower circuit board wiper arm, moves the vacuum valve operating arm, and controls the feedback potentiometer. The vacuum motor mechanism is spring-loaded so that with no vacuum it is fully extended out of the vacuum motor ("Max A/C" position). When approximately 8" of vacuum is applied to the vacuum motor, the mechanism is pulled all the way into the vacuum motor ("Max Heat" position).