A control and monitoring system for controlling the rotary atomizer of a sprayer to covert a liquid into atomized droplets which is pumped from a supply. The control and monitoring system includes component control microprocessors connected to a master control microprocessor for monitoring operating parameters of various sprayer components and controlling their operation. A remote controller is connected to the master control microprocessor for alternative manual control over the sprayer by a user or automatic control by the control and monitoring system. The master control microprocessor provides for comparison of monitored operating parameters against acceptable values stored in memory for diagnosis of anomalous operating parameters. A data collector is connected to a data port to access and store operating information processed by the master control microprocessor.