System composed of an apparatus for treating a fluid, a handheld device and a method for operating such a system

A method to operate a system, whereby the system composed of an apparatus to treat a fluid and a handheld device, wherein

• the apparatus has a communication unit with a radio antenna and the handheld device has a communication unit with a radio antenna and both communication units can exchange data with each other by means of radio communication and
• the apparatus has a control unit, which can detect at least one status parameter of the apparatus and generate a signal which is dependent on the status parameter and can transfer it via the communication unit of the apparatus to the communication unit of the handheld device,
• wherein the method comprises the following steps:
• the control unit detects a status parameter of the apparatus and generates a signal dependent on the status parameter and transmits the signal to the communication unit of the handheld device via the communication unit of the apparatus,
• whereby the handheld device after receiving the signal via the radio antenna of the communication unit of the handheld device generates a response signal which it transfers to the communication unit of the apparatus via the communication unit of the handheld device,
• characterized in that depending on the signal exchanged between the communication units of the apparatus and of the handheld device, on a display of the handheld device action recommendations are output as to which positioning interventions can be performed on the apparatus in order to establish or restore a specific operating state, and
• wherein the response signal is transmitted from the communication unit of the apparatus to the control unit of the apparatus and the control unit of the apparatus places a positioning element of the apparatus depending on the response signal.