Product Overview

Reduce the real costs
Electricity is the most expensive part of any pump. This sim-
ple fact is often overlooked when pumps and prices are com-
pared, so it is worth repeating here.
It may still surprise some to learn that the purchase price and
maintenance costs account for less than 15% of the total life-
time cost of a pump. Obviously, this means that electricity ac-
counts for a staggering 85% or more of the total costs. So if
you want to save money, that’s what you should look at.
Efficiency Class 1 motors
– the best efficiency you can get
The Grundfos CR makes a real difference. All 3-phase 50Hz
motors used in the CR range bear the EFF1 mark; clear proof
that they are as efficient as pump motors can get. See the ta-
ble below to find out just how much electricity you can save.
Other benefits of EFF! pumps
While energy savings are the main benefit of EFF 1 motors,
it’s worth noting that they are also quieter than standard mo-
tors - they require less cooling, so their fans are smaller and
less noisy. The lower motor temperature also means that EFF1
motors tolrate higher ambient temperatures - up to 60C.
Let’s talk money!
Application type Typical duty point Operating
hours per day
Average kWh reduction
per year with CR
Average kWh reduction
per year with MG motors
Total reduction
per year
Water supply 80 m
3
/h at 6 bar 24 hours 18500 kWh 5200 kWh 23700 kWh
Water treatment 2 m
3
/h at 15 bar 15 hours 3200 kWh 600 kWh 3800 kWh
General industry 6 m
3
/h at 10 bar 10 hours 2200 kWh 400 kWh 2600 kWh
Efficient pumps, efficient motors
CR pump efficiency
This table shows the unique efficiency of the
Grundfos CR pump programme.
0.5
0.8 2
31
4
5
6
7
8
1010
20
30
40
50
60
70
80
100
Q[m
3
/h]
10
20
30
40
50
60
70
80
[%]
GRUNDFOS CR
The hydraulics of the CR pump are very efficient in themselves. When they are combined
with EFF1 motors, the savings really add up. This table shows you the savings you can expect
– year after year.
CR 9GRUNDFOS