Water-cooled frequency converter with an integrated pressure and flow monitor for regulating pump speeds. The converter controls and maintains a constant, pre-set pressure level. Designed for use with clean, non-aggressive water.

If the pressure in the system drops compared to the set pressure by a pre-set pressure difference, the MM9 converter will activate the pump. Once the pump reaches the set pressure value again, the converter will switch it off after a certain time interval.

The converter also provides the pump with protection against dry running, overcurrent, freezing, short circuits, overvoltage and undervoltage, and excessively high temperature of the pumped water. Control and settings are managed via an LCD display using buttons. The converter is installed between the pump and a pressure membrane tank with a minimum volume of 2 litres. It is essential to install a check valve on the connection with the pump before the converter.

Features

• output pressure setting 0.5...12 bar
• connection size G 1 1/4"
• for 230 VAC pumps
• only for vertical piping
• contact for external devices
• cable length 1.4 m