Grundfos Pressure Group CMBE 3-93 I-U-C-C-D-A

The Grundfos CMBE 3-93 I-U-C-C-D-A pressure booster set is an efficient and reliable solution for water supply in domestic and commercial applications that require a constant pressure increase. This high-efficiency pump is designed to ensure a continuous supply of clean water, maintaining consistent pressure thanks to its integrated speed controller. It is ideal for commercial and residential buildings that require stable and reliable performance in their water supply system.

With a nominal flow rate of 4.2 m³/h and a nominal head of 66.3 metres, the Grundfos CMBE 3-93 can handle high-demand applications, ensuring optimal pressure at all times. Equipped with an integrated frequency converter, it adjusts the pump speed according to system needs, optimising energy consumption and ensuring economical operation.

Technical Specifications:

• Nominal flow rate: 4.2 m³/h, ideal for water supply in medium-demand domestic and commercial applications.
• Nominal head: 66.3 m, providing the necessary pressure for efficient water distribution.
• Number of impellers: 6, ensuring a constant and efficient pressure increase.
• Seal code: AVBE, ensuring a durable and effective seal.

Materials:

The pump is manufactured with high-quality materials to ensure its durability and resistance in demanding applications. Both the hydraulic body and the impeller are made of stainless steel EN 1.4301 (AISI 304), providing excellent corrosion resistance and ensuring a long service life, even in potable water conditions. The integrated check valve allows uninterrupted water flow, while the EPDM rubber seals ensure a proper and durable seal.

• Hydraulic body: Stainless steel EN 1.4301 (AISI 304), corrosion-resistant.
• Impeller: Stainless steel EN 1.4301 (AISI 304), for greater durability and operational efficiency.
• Seals: EPDM rubber, for a secure and durable seal.

Installation:

The CMBE 3-93 pressure booster set is designed to operate in ambient temperature ranges up to 55 °C, making it suitable for a wide variety of climates. It has a maximum working pressure of 10 bar and complies with ISO 228-1 standards for pipe connection. The inlet and outlet connections are Rp type and have a size of 1 inch, facilitating integration into domestic and commercial systems.

• Maximum working pressure: 10 bar.
• Inlet/outlet connection size: 1 inch.
• Connection standard: ISO 228-1, ensuring compatibility with standard installations.

Pumped Liquid:

The pump is designed to handle water with a temperature range of 0 °C to 60 °C, being suitable for both cold and slightly warm water. The normal operating temperature is 20 °C, ensuring stable and efficient performance in common water supply applications.

• Liquid temperature range: 0 °C to 60 °C.
• Liquid temperature during operation: 20 °C.
• Pumped liquid density: 998.2 kg/m³.

Electrical Data:

With a nominal power of 1.5 kW, the Grundfos CMBE 3-93 is equipped to handle pressure systems requiring continuous water supply. It operates with a nominal voltage of 1 x 200-240 V and a network frequency of 60 Hz. The integrated frequency converter automatically adjusts the pump speed, optimising energy consumption and ensuring efficient performance with low impact on operating costs.

• Nominal power (P2): 1.5 kW.
• Network frequency: 60 Hz.
• Nominal voltage: 1 x 200-240 V.
• Maximum power consumption: 9.10-7.60 A.
• Nominal speed: 360-4000 rpm.
• Protection grade: IP55, ensuring protection against dust and water jets.
• Insulation class: Class F, ensuring safe operation at moderate temperatures.

Other Details:

The Grundfos CMBE 3-93 pump includes a 2-litre tank to stabilise pressure, ensuring continuous supply and reducing pump wear by avoiding frequent on/off cycles. With a net weight of 19.2 kg, the pump is light enough to facilitate installation, yet robust enough to withstand prolonged use. Its transport volume is 0.159 m³, making it easy to handle during shipping.

• Tank: 2 litres, to stabilise pressure and reduce pump wear.
• Net weight: 19.2 kg.
• Gross weight: 29.7 kg.
• Transport volume: 0.159 m³.

Environmental Compliance:

The CMBE 3-93 pressure booster set complies with environmental regulations, including WEEE and WRAS, ensuring it is an environmentally friendly solution suitable for potable water applications.