Grundfos PM1 pressure regulating pump start/stop

The Grundfos PM1 pressure controller is an efficient and reliable solution for the automatic management of starting and stopping water pumps, whether Grundfos pumps or those from other manufacturers. Designed to offer basic control functions, the PM1 provides protection against dry running, as well as a constant start alarm that alerts to potential problems in the system. This controller is ideal for domestic or commercial applications that require automatic and safe management of the water pumping system.

Automatic control of the pumping system

The Grundfos PM1 ensures automatic operation of the pumping system, activating the pump when a drop in water pressure is detected and deactivating it when the flow stops. This start/stop function is ideal for applications such as domestic water supply, irrigation systems, and water distribution systems where reliable control is required without constant manual intervention.

Advanced protection for the pump

The PM1 is equipped with dry running protection, an essential feature to protect the pump and piping system when there is insufficient water available. This prevents the pump from running dry, which could damage it. Additionally, the controller features a constant start alarm that issues a warning if the system detects that the pump is continuously activating, which could indicate a leak or malfunction in the system.

Key technical specifications:

• Start pressure: 1.5 bar
• Dry running protection: Yes
• Protection rating: IP65
• Maximum current consumption: 10 A
• Maximum supported power: 1200 W

Durable and high-quality materials

The Grundfos PM1 is made from robust materials that ensure a long lifespan and reliable performance. The hydraulic body is made of durable composite, while the housing is made of polypropylene, providing excellent resistance to corrosion and adverse environmental conditions. This controller is suitable for a wide range of indoor and outdoor applications, withstanding ambient temperatures of up to 50 °C.

Simple and flexible installation

The PM1 features G1" inlet and outlet connections with external threads, making it easy to integrate into most pumping systems. Its compact and lightweight design, with a net weight of only 0.89 kg, allows for easy installation, even in tight spaces. Additionally, its IP65 protection rating ensures that the controller is resistant to dust and water splashes, making it a safe option for installation outdoors or in industrial environments.

Installation data:

• Inlet and outlet connection: G1"
• Liquid temperature range: 0 to 40 °C
• Maximum ambient temperature: 50 °C
• Power cable length: 0.5 m with Schuko plug

Electrical efficiency and safety

The Grundfos PM1 is designed to operate with a nominal voltage of 220-240 V and supports a maximum power of 1200 W, making it suitable for most domestic and industrial water pumps. This controller is designed to work in both 50 Hz and 60 Hz networks, making it adaptable to different environments. Additionally, its IP65 protection rating ensures that the device is protected against dust and water ingress, guaranteeing a long lifespan and safe performance in demanding conditions.

Electrical specifications:

• Maximum supported power: 1200 W
• Maximum current consumption: 10 A
• Frequency: 50/60 Hz
• Nominal voltage: 220-240 V
• Protection rating: IP65
• Dry running protection: Yes

Certifications and approvals

The Grundfos PM1 has multiple certifications that guarantee its quality and compliance with international standards. It is certified with CE, EAC, and RCM certifications, and also has approvals for use in drinking water systems under WRAS and ACS standards. This ensures that the controller meets safety and quality regulations worldwide, both for general applications and for drinking water systems.

Additional specifications:

• Net weight: 0.89 kg
• Gross weight: 1.68 kg
• Tank volume: 0.1 l
• Transport volume: 0.01 m³

The Grundfos PM1 pressure controller is a reliable and efficient option for managing the start and stop of water pumps. With advanced protection features, such as dry running protection and a constant start alarm, this controller ensures safe and trouble-free operation of the pumping system. Additionally, its easy installation and durable materials make it an ideal solution for domestic, commercial, and irrigation applications.