Grundfos ALPHA1 L 25-40 180mm electronic circulator pump

Thanks to its compact design, its simple connections, the external signal by cables (PWM) and its tolerance to work with a high ambient temperature, ALPHA1 L fits perfectly to most boilers that incorporate independent Grundfos pumps. of the pump brand. This allows easy replacement and replacement of damaged, old or inefficient pumps with practically no need to use extra spare parts.

ALPHA1 L 25-40 180 Grundfos ALPHA1 L 25-40 180 is a high efficiency circulator pump with permanent magnet motor (ECM technology).

The pump offers three control modes, radiator heating mode, underfloor heating mode and curve/constant speed mode.

In addition, the speed can be controlled by a low voltage PWM (Pulse Width Modulation) signal.

The pump has a ceramic shaft and radial bearings, carbon thrust bearing, rotor sleeve, stainless steel rotor housing and liner and composite impeller, all of which contribute to long life, and the pump is self-bleeding, which contributes to easy commissioning and easy selection of control mode.
Its compact design, which has a cable With an integrated control box and control panel, the pump head fits most common installations as well as boilers.

The pump and motor form an integral unit without closure. The pump design is wet rotor. The bearings are therefore lubricated by the pumped liquid. This construction ensures maintenance-free operation.

The pump casing is made of cast iron and is galvanized to improve corrosion resistance.

The motor is a synchronous rotor motor. permanent magnets/compact stator. The pump controller is incorporated in the control box, which is mounted on the stator casing and connected to the stator via terminal connector.

ALPHA1 L Features:
- Three constant curves/constant speed
- Radiator heating mode
- Underfloor heating mode
- PWM profile for heating applications (profile A).
- The PWM signal is a method of generating an analog signal using a digital source.
- With its optimal energy consumption, it complies with the ErP Directive.
- Release screw, accessible from the front of the control box
- Reliable and efficient operation even in the most demanding conditions
- Adjustable and flexible installer connector, with two possible press positions for cable passage

Technical characteristics of the electronic circulator pump ALPHA1 L 25-40 180mm:
- Pumped liquid: Water Liquid temperature range: 2 .. 95 °C
- Temperature of the liquid during operation: 60 °C
- Density: 983.2 kg/m³
- TF class: 95 Nameplate approvals: CE,VDE,EAC
- Pump casing: Cast iron EN 1561 EN-GJL-150 ASTM A48-150B
- Impeller: Composite/PES 30 % GF
- Ambient temperature range: 0 .. 55 °C
- Maximum working pressure: 10 bar
>- Pipe connection: G 1 1/2
- Nominal pressure: PN 10
- Length port to port: 180 mm
- Power - P1: 4 .. 25 W
- Frequency of network: 50 / 60 Hz
- Rated voltage al: 1 x 230 V
- Maximum current consumption: 0.05 .. 0.26 A
- Protection degree (IEC 34-5): X4D
- Insulation class (IEC 85): F
- Energy (IEE): 0.20
- Net weight: 2.1 kg
- Gross weight: 2.2 kg
- Transport volume: 0.004 m³

* Does not include fittings