GRUNDFOS CR - Multistage Pumps : Features and Benefits

The Complete CR Range - Grundfos Multistage Pumps :

• 4 different material versions: CR, CRI, CRN and CRT

• 10 different sizes: 1s, 1, 3, 5, 10, 15, 20, 32, 45, 64 and 90

• Motor range from 0.37 to 45 kW (CRE from 0.37 to 22 kW)

• Temperature range from -40 to 180 °C

CR Basic Features :

• Shaft seal solutions: A wide choice of materials in the cartridge configuration

• Motor: Grundfos MG & MGE

• Cartridge shaft seal: Grundfos developedand produced 

• Material options:CR/CRI/CRN/CRT

• Connections: A broad range of connections 

• Dry-running sensor: Grundfos LiqTec 

• Bearings:  Hard wearing materials 

• High performance hydraulics: Grundfos state-of-the-art hydraulic design and production technology

CR High Pressure :

• CRNE 1HS & CRNE 3HS up to 5600 rpm with MGE motor technology

• Larger pumps in two-pump solution

GRUNDFOS CR - Multistage Pumps : Features and Benefits

The Complete CR Range - Grundfos Multistage Pumps

• 4 different material versions: CR, CRI, CRN and CRT

• 10 different sizes: 1s, 1, 3, 5, 10, 15, 20, 32, 45, 64 and 90

• Motor range from 0.37 to 45 kW (CRE from 0.37 to 22 kW)

• Temperature range from -40 to 180 °C

Shaft seal solutions: A wide choice of materials in the cartridge configuration

Motor: Grundfos MG & MGE

Cartridge shaft seal: Grundfos developed and produced

Material options: CR/CRI/CRN/CRT

Connections: A broad range  of connections

Dry-running sensor: Grundfos LiqTec

Bearings: Hard wearing materials

High performance hydraulics: Grundfos state-of-the-art hydraulic
design and production technology

• CRNE 1HS & CRNE 3HS up to 5600 rpm with MGE motor technology
• Larger pumps in two-pump solution

Why Speed Cntrolled Pumps ?

What are the general benefits by speed controlling pumps  ?

Energy Saving

• Reduced Life Cycle Cost and reduced CO2 emission

Increased  Comfort

• Reduced noise from th installation,
• Constant pressure
• No water hammering

Make Processes Work
• adapts automatically to changes in system Reduced total system cost
• speed controlled pumps can make some valves etc. unnecessary
• reduced installation and commissioning costs

Protection of Pump, Motor and Electronic
• reduced stress on motor, pump and system
• overload protection of motor and electronic

An example:
• A speed controlled pump automatically adapt  the pump performance to the actual need.
• The flow is reduced by lowering the speed of the pump
• The pressure is constant 3 bar