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

GRUNDFOS : Speed-Controlled Pumps

Grundfos pumps cover a broad range of applications and an even wider variety of configurations. From single-stage to multistage; dry-pit as well as submerged pumps; from clean water to sewage - in cast iron, composite, stainless steel and even titanium, each pump is developed to perform under specific conditions.

We are one of the world’s few pump manufacturers who are responsible for developing and producing every single element of their pumps and associated technology. Electronic components such as control units, frequency converters, motors and sensors are all developed in-house to achieve perfect product and system integration.

This wide range and built in cross-compatibility of components allows us to provide solutions for every application – usually without the need for custom-built solutions and the subsequent cost.

Low Maintenance Costs for Grundfos SP

 The customer benefit that drives down your Cost of Ownership
part-2

5.Durability with Stainless Steel

• Standard version for drinking water
• N-version for slightly aggressive saline water
• R-version for sea water
• Zinc anode protection for sea water and in harbours
• Recycling

6. Unique bearing system

• Replaceable bearings and neck rings
• Unique octagonally shaped bearings with high velocity sand flush channels reduce abrasive wear
• Viton version for oil
• Hard rubber version for sand

7.Priming Screw

• Uniquely designed screw and impeller for priming the pump
• Protection against dry-running

8. Long Service Intervals

• Maximum resistance against corrosion and abrasion
• Advanced design and construction
• Best materials chosen
• Pump and motor protection feature

Gundfos Submersible Pump SP : Low Maintenance Costs

Gundfos Submersible Pump SP : Low Maintenance Costs - part 1
The customer benefit that drives down your Cost of Ownership

1. Water Lubricated Bearings

• SP ensures low purification costs
• No contamination risk from materials
• SP protects the water quality

  Durability with stainless steel
Standard version for drinking water
N-version for slightly aggressive saline water
R-version for sea water
Zinc anode protection for sea water and in harbours
Recycling


2. Maintenance-Friendly Design

• Quick and cost effective service
• Smooth surface - cleaning is often sufficient
• Replace only rubber wear parts
• Low weight

3. Sealed Top Bearings 

•  High resistance against sand and other abrasive particles
• Trouble free operation
• Extended operation period

4.Replaceable Wear Rings

Replace wear parts at service and thus maintain the best pump effenciency








to be contiued ...part2

Grundfos Submersible Pump : SP Series - part 1

The Grundfos SP Product Range :

• Wide and complete range
• The only complete range of all stainlesssteel submersibles
•  50 Hz and 60 Hz versions

The Customer Benefit that Drives Down Your Cost of Ownership

1.High pump efficiency :

• Reduced energy consumption
• High effenciency is more important than the purchase price
• Example:Water capacity: 400 m³/hHead: 80 m.Operation time: 12 h/day, 10 yearsEnergy price: USD 0.075 per kWh. Approx. saving by converting to a pump with 10% higher effenciency: 800,000 kWh, corresponding to USD 60,000

2.Reduced impeller diameters : 

• Specific duty points
•  Motor size match
•  We recommend:  
• Use full-size impellers
• Change flow/operation hours

to be continued.... part 2