| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter device usable in common in a self-priming pump and a nonself-priming pump. SOLUTION: This control device for controlling an inverter of the pump 1 on the basis of a measured value of a pressure sensor 4 arranged in the vicinity of a pressure tank 3, is provided with a self-priming sub-routine 200 for outputting inverter output of a prescribed frequency until measured pressure of the pressure sensor reaches required pressure at starting time. Since the sub-routing 200 holds the inverter output of the prescribed frequency until the measured pressure of the pressure sensor reaches the required pressure, the self-priming pump can be started by maintaining the pump at a constant speed for a period of exhausting from a steam separating chamber. When reaching a specified pressure in processing, since control transfer to ordinary inverter control, the nonself-priming pump can also be started. |
