Pump Types; Pump Performance - Grundfos DMX 227 Installation And Operating Instructions Manual

3.2 Pump types

The pump nameplate shows various data of the pump like the type designation and the pump model. For an explanation of the nameplate
see section 3.1.1 Nameplate.
The pump type is the left part of the type designation and consists of the type abbreviation, the nominal dosing capacity and the maximum
counterpressure. For an explanation of the type designation see section
Pump type
DMX 860-5
DMX 1120-5
DMX 1520-3
DMX 2000-3

3.3 Pump performance

3.3.1 Accuracy
• Dosing flow fluctuation: less than ± 2 % within the control range 1:10.
Applies to:
• water as dosing medium
• fully deaerated dosing head
• standard pump version.
3.3.2 Performance
Applies to:
• maximum counterpressure
• water as dosing medium
• flooded suction 0.5 mWC
• fully deaerated dosing head
• three-phase 400 V motor.
Pump type p max.*
Single pump [bar]
DMX 860-5 5
DMX 1120-5 5
DMX 1520-3 3
DMX 2000-3 3
Pump type p max.*
Double pump [bar]
DMX 860-5D 5
DMX 1120-5D 5
DMX 1520-3D 3
DMX 2000-3D 3
* Maximum counterpressure
** Operation with frequency converter
Dosing head size
1
1
2
2
50 Hz
Max. stroke
Q
rate
[psi] [l/h] [n/min]
73 860 56
73 1120 73
44 1520 56
44 2000 73
50 Hz
Max. stroke
Q
rate
[psi] [l/h] [n/min]
73 1720 56
73 2240 73
44 3040 56
44 4000 73
3.1.2 Type key.
Motor
Single pump Double pump
[kW]
1.5
1.5
1.5
1.5
60 Hz
Max. stroke
Q
rate
[l/h] [gal/h] [n/min]
1032 273 67
1344 355 88
1824 482 67
2400 634 88
60 Hz
Max. stroke
Q
rate
[l/h] [gal/h] [n/min]
2064 545 67
2688 710 88
3648 964 67
4800 1268 88
Stroke volume
[ml]
[kW]
2.2 256
2.2 256
2.2 457
2.2 457
100 Hz**
Max. stroke
Q
rate
[l/h] [gal/h] [n/min]
1720 454 112
2240 592 146
3040 803 112
4000 1057 146
100 Hz**
Max. stroke
Q
rate
[l/h] [gal/h] [n/min]
3440 909 112
4480 1184 146
6080 1606 112
8000 2114 146
5