JP 5-48 PM START Pressure Booster System

The Grundfos JP 5-48 PM START pressure boosting system, reference 93294166, is a compact unit made up of a Grundfos JP self-priming centrifugal pump and a PM1 electronic pressure controller. It is designed to automate water supply and pressurization in homes, gardens, and other domestic applications, offering a nominal flow rate of 5 m³/h and a nominal head of 45.6 meters.

The PM1 controller automatically starts the pump when the system pressure drops to 1.5 bar and keeps the unit running while water is being consumed. It also includes dry-running protection, anti-cycling system, and an integrated non-return valve, providing safety and convenience for the installation.

Automatic pressure booster set with Pressmanager PM1

The Grundfos JP 5-48 PM START is designed to operate automatically according to water demand. The Pressmanager PM1 monitors the system and starts the pump when it detects a pressure drop to the set start value of 1.5 bar.

As long as water is flowing, the pump remains in operation. When water consumption stops, the controller automatically shuts the unit down, so the user does not need to start and stop it manually.

The start pressure of this version is fixed and not adjustable.

Self-priming pump for home and garden

The integrated JP pump is a single-stage self-priming centrifugal pump that can draw water from below the pump level. Grundfos specifies a maximum suction lift of up to 8 meters, taking into account suction pipe losses and a water temperature of 20 °C.

During priming, the pump can handle a mixture of air and water until normal pumping conditions are reached. This self-priming capability makes it ideal for domestic water supply, rainwater harvesting, irrigation, and pressure boosting when water comes from tanks, cisterns, or sources located below the pump.

Nominal flow rate of 5 m³/h and 45.6 meters head

The JP 5-48 PM START delivers a nominal flow rate of 5 m³/h and a nominal head of 45.6 meters. These performance figures make it suitable for applications that require a high water pressure and an adequate flow rate for different points of use.

The maximum working pressure of the system is 6 bar. Both the suction and discharge connections are female G1 threaded, making it easy to integrate into domestic plumbing installations.

Dry-running protection

The PM1 controller includes dry-running protection. If the system detects that the pump is running without water, it automatically stops the unit to reduce the risk of damage caused by lack of liquid.

This protection is especially useful in installations fed from tanks, wells, or rainwater harvesting systems, where supply shortages may occur.

Anti-cycling protection

The system also features anti-cycling protection. This function helps detect excessively frequent starts and stops, which can occur due to small leaks or anomalies in the installation.

By protecting the unit against repetitive operating cycles, the Pressmanager helps reduce unnecessary stress on the pump and makes it easier to detect possible issues in the hydraulic circuit.

Integrated non-return valve

The PM1 incorporates a non-return valve that prevents water from flowing backward through the controller. Because it is integrated into the system itself, it simplifies installation and helps maintain the proper conditions for automatic pump operation.

Motor thermal protection

The JP pump features built-in thermal protection. In the event of overheating, the system stops the motor to protect it from excessive temperatures.

The motor is air-cooled and fitted with oversized, sealed, lifetime-lubricated bearings, a solution developed by Grundfos to reduce maintenance needs during normal operation.

Robust stainless steel construction

The pump housing is made of EN 1.4301 / AISI 304 stainless steel, a material suitable for providing corrosion resistance in water supply and pressure boosting applications.

The impeller is made of glass-fiber-reinforced PPO composite material. The combination of corrosion-resistant materials helps provide a robust construction for domestic and garden applications.

For pumping clean water

The Grundfos JP 5-48 PM START is intended for water pumping. The technical documentation specifies a liquid temperature range of 0 to 40 °C for this reference, as well as an ambient operating temperature of 0 to 40 °C.

To ensure correct operation, it must be used with clean water and within the operating limits established by Grundfos.

Single-phase power supply and ready-to-install connection

The pump operates on a single-phase 220-240 V, 50 Hz power supply. It has an input power P1 of 1390 W and a rated output power P2 of 1 kW, with a rated current of 6.1 A.

It is supplied with a 1.5-meter power cable and a Schuko type E/F plug, making electrical connection easy in compatible installations. The motor has an IP44 protection rating and insulation class F.

Technical features of the Grundfos JP 5-48 PM START

• Brand: Grundfos.
• Reference: 93294166.
• Model: JP 5-48 PM START.
• Type: pressure boosting system with self-priming pump and electronic controller.
• Pump type: single-stage self-priming centrifugal pump.
• Pressure controller: Grundfos PM1.
• Nominal flow rate: 5 m³/h.
• Nominal head: 45.6 m.
• Start pressure: 1.5 bar.
• Adjustable start pressure: no.
• Maximum working pressure: 6 bar.
• Maximum suction lift: up to 8 m.
• Suction connection: female G1.
• Discharge connection: female G1.
• Connection standard: ISO 228-1.
• Non-return valve: integrated.
• Dry-running protection: yes.
• Anti-cycling protection: yes.
• Motor thermal protection: yes.
• Pumped liquid: water.
• Liquid temperature: 0 to 40 °C.
• Ambient temperature: 0 to 40 °C.
• Pump housing material: stainless steel EN 1.4301 / AISI 304.
• Impeller material: PPO-20GF composite.
• Mechanical seal: BBVP.
• Power supply: 1 x 220-240 V, 50 Hz.
• Input power P1: 1390 W.
• Rated power P2: 1 kW.
• Rated current: 6.1 A.
• Starting current: 28.4 A.
• Rated speed: 2870 rpm.
• Pump protection rating: IP44.
• Insulation class: F.
• Cable length: 1.5 m.
• Plug: Schuko type E/F (CEE 7/7).
• Net weight: 14.8 kg.
• Certifications: CE and EAC.

Applications of the JP 5-48 PM START

Thanks to its self-priming capability and automatic PM1 control, this pressure booster set is suitable for different water supply applications in domestic and garden environments.

• Pressure boosting in domestic installations.
• Water supply for homes.
• Garden irrigation.
• Rainwater harvesting.
• Pumping from tanks and cisterns.
• Installations where automatic start and stop according to consumption are required.

A compact solution for increasing water pressure

The Grundfos JP 5-48 PM START combines a high-performance self-priming pump with the PM1 electronic controller in a single unit. Automatic start at 1.5 bar, dry-running protection, anti-cycling protection, and the integrated non-return valve provide a practical system for automating water supply.

With a nominal flow rate of 5 m³/h, a head of 45.6 meters, suction up to 8 meters, and an AISI 304 stainless steel body, the JP 5-48 PM START is especially suitable for those looking for a robust Grundfos pressure booster set ready for domestic, irrigation, and water harvesting applications.