Controller for a motor and a method of controlling the motor

A method of controlling a pumping apparatus for a jetted-fluid system comprising a vessel for holding a fluid, a drain, and a return, the pumping apparatus comprising

• a pump having an inlet fluidly connectable to the drain to receive the fluid, and an outlet fluidly connectable to the return to exhaust the fluid, and
• a motor coupled to the pump to operate the pump, the method comprising:
• determining a calibration value for an electrical characteristic of the motor power, the calibration value being calculated using at least one of a value for a motor current and a value for a motor voltage;
• initiating a first mode of operation for the pumping apparatus;
• controlling the motor to controllably operate the pump to pump the fluid during the first mode of operation;
• monitoring the electrical characteristic of the motor power when operating the pump during the first mode of operation;
• determining whether the monitored electrical characteristic of the motor power indicates a condition of the pump and further controlling the motor based on the condition of the pump;
• initiating during the first mode of operation, a fault mode when the monitored electrical characteristic of the motor power is a predetermined percentage of the calibration value;
• receiving a user-initiated control interrupt signal;
• initiating a second mode of operation based on the user-initiated control interrupt signal;
• controlling the motor to controllably operate the pump to pump the fluid during the second mode of operation;
• monitoring the electrical characteristic of the motor power when operating the pump during the second mode of operation;
• further controlling the motor without regard for a value of the monitored electrical characteristic of the motor power during the second mode of operation such that control of the motor will not be altered if the condition of the pump is indicated;
• and
• reinitiating the first mode of operation.