3WHMXL D 50-120F 220

The twin-head pump function allows you to control twin head pumps without using an external controller. Two pressure/temperature sensors are included to guarantee the accuracy of the flow feedback.

FUNCTIONS
Alternating operation: Only one pump runs at a time, change from one pump to the other every 24 hours or if one of the pumps experiences an alarm.
Main/standby operation : Only one pump runs at a time, the second pump is provided in case of malfunction or is used after changing pumps.
Parallel operation at peak loads with efficiency optimization: When the main pump is running at 90% of its maximum speed or following the maximum curve, the other pump will start.