Calpeda NM4 80/25A/B

The Calpeda NM4 80/25A/B pump is a monoblock centrifugal pump with a cantilever-monoblock format. It is equipped with a horizontal suction pipe and shaft, as well as a vertical discharge pipe. This pump design ensures long-term operation and ease of maintenance. The pump can be used with clean liquids and liquids with a share of contamination, which allows classifying the pump as universal equipment. The power of the Calpeda NM4 80/25A/B pump is 7.5 kW, and the voltage is 380 V. The pump provides a pressure of 12.7 to 23.7 m, and a capacity of 30 to 132 m³/h. Cast iron, bronze, stainless steel and brass are the materials from which the pumps are made. They provide high reliability and protection against corrosion and oxidation. Pumps of this series have a significant mass, which allows to avoid vibration overloads as much as possible and has a positive effect on the engine life. The pumps are well suited for critical areas that support long-term continuous operation. Special versions with other voltage and frequency are possible. The monoblock design completely protects against liquid ingress into the pump's working mechanism, which allows to minimize failures in operation. Under the operating conditions specified in the instructions, the pump operates in continuous mode 24/7. The popularity of the pump in the field of professional water supply and households was ensured by its affordable price and optimal set of characteristics.

Variable Speed Pumps (EI)

The NM4 EI pumps are available with a power of 0.25 kW to 15 kW and are equipped with I-MAT inverters. They enable the implementation of an extremely compact and efficient variable speed system, which is ideal for use in water supply and for the distribution of hot and cold water. The pump is equipped with sensors programmed directly at the factory and programmable by the user for the desired operating mode.

Advantages

• Energy saving.
• More compact system.
• Ease of use.
• Personalized programming according to installation requirements.
• Reliability.

Design

• Pump
• Electric motor
• I-MAT frequency controller
• Engine Mounting Adapter
• Connecting cable for inverter and electric pump
• Pressure sensors

• Nominal engine power: from 0.25 kW to 15 kW.
• Adjustment range: speed 870÷1450 1/min (106-pole pumps).
• Dry running protection. Protection against operation with a closed socket.
• Leakage protection. Overvoltage protection in the engine.
• Protection against overvoltage or undervoltage in
• power supply system
• Protection against imbalance between power phases

Scope of application

• Water supply
• Heat supply
• Conditioning
• Cooling and circulation
• Household and industrial sphere

Operating limitations

• Continuous operation mode
• Liquid temperature from -10°C to +90°C
• Ambient temperature no more than 40°C
• Maximum permissible final pressure in the pump body: 10 bar
• Manometric suction height no more than 7 m