Mounting head maintenance device

A mounting head maintenance device comprising:

• an external flow path configured to communicate with an internal flow path of a mounting head, the mounting head having a nozzle holding section that detachably holds a suction nozzle, the internal flow path that selectively supplies negative pressure air and positive pressure air to the suction nozzle, and an internal air sensor that is provided in the internal flow path and detects at least one of a flow rate and pressure of the air;
• a reference air sensor provided in the external flow path and configured to detect at least one of the flow rate and the pressure of the air;
• a detection result acquiring section configured to acquire an internal detection result of the internal air sensor and a reference detection result of the reference air sensor;
• and a comparing and determining section configured to compare the internal detection result with the reference detection result to determine at least one of accuracy and availability of the internal air sensor.