Grundfos PM2 pressure manager is an electronic pressure manager primarily for controlling Grundfos pumps, but it can also be used for other water supply pumps.

The pressure manager offers an adjustable start from 1.5 to 5 bar, allowing for adaptation to the individual installation.

The installation can be done either vertically, horizontally, or at an angle, if the space is confined.

The display can be adjusted within 360 degrees to always have the optimal viewing angle.

When the start pressure is reached, the pump is started and kept running as long as the pressure manager senses a flow. The pressure manager has an electronic interface with LED indicators, which shows the status for power on, pump running, and alarm indication. The pressure manager incorporates functions for pump and installation protection. These functions are dry running protection, cycling alarm, and maximum continuous operation time of 30 minutes. A non-return valve for backflow prevention is already integrated.

The pressure manager can be optimised for operation with a large external pressure tank by enabling the 1 bar differential pressure function.

This significantly reduces the number of operating hours of the pump in installations with a pressure tank.

Additionally, the pressure manager features an LED pressure indication.

Pressure managers are available as a stand-alone solution for a new or retrofit installation, or as part of a Grundfos domestic water solution.

Supply voltage: 1×220-240 – 50/60 Hz
Maximum inductive contact load: PM2: 10 A PM1: 6 A
Ambient temperature: Maximum 50°C
Liquid temperature: 0°C>40°C
Pstart PM2: adjustable from 1.5 to 5 bar in steps of 0.5 bar
Pstart PM1: PM1 1.5: 1.5 bar PM1 2.2: 2.2 bar
Pstop: Pstart + 0.4 bar (PM2 with differential pressure activated, Pstart+1 bar)
Min Flow: 1 l/min
Connections: 1″ M
Enclosure class: IP65
Scope of delivery: Built-in non-return valve. Delivered without cable or plugs.

The table below gives a brief comparison of the features of the PM 1 and PM 2. The main features are described beneath the table: