Grundfos CRN90

Features and benefits

• Reliability
• High efficiency
• Service-friendly
• Space-saving
• Suitable for slightly aggressive liquids

Technical data
主管马克斯	177.4 m
Liquid temperature	-40 .. 120 °C
Max flow	123 m³/h
p max	30 bar

CRN90 water pump product information (MEI)

Minimum efficiency index (MEI) means the dimensionless scale unit for hydraulic pump efficiency at best efficiency point (BEP), part load (PL) and overload (OL). The Commission Regulation (EU) sets efficiency requirements to MEI > 0.1 as from 1 January 2013 and MEI > 0.4 as from 1 January 2015. An indicative benchmark for best-performing water pump available on the market as from 1 January 2013 is determined in the Regulation.

The benchmark for most efficient water pumps is MEI ≥ 0,70. The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter. The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system. Information on benchmark efficiency is available at http://europump.eu/efficiencycharts.

Options

• Dry-running protection and motor protection via LiqTec