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Pumped Liquids; Identification; Nameplate - Grundfos ALPHA1 15-50 Bedienungsanleitung

Alpha1 serie
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6.3 Pumped liquids

In heating systems, the water must meet the requirements of
accepted standards on water quality in heating systems, for
example the German standard VDI 2035.
The pump is suitable for the following liquids:
Thin, clean, non-aggressive and non-explosive liquids, not
containing solid particles or fibres.
Cooling liquids, not containing mineral oil.
Domestic hot water
Maximum: 14 °dH
Maximum: 65 °C
Maximum peak: 70 °C.
For water with a higher degree of hardness, we recommend
that you use a direct-coupled TPE pump.
Softened water.
The kinematic viscosity of water is 1 mm
pump is used for a liquid with a higher viscosity, the hydraulic
performance of the pump will be reduced.
Example: 50 % glycol at 20 °C means a viscosity of approx. 10
2
mm
/s (10 cSt) and a reduction of the pump performance by
approx. 15 %.
Do not use additives that can or will disturb the functionality of the
pump.
When selecting a pump, take the viscosity of the pumped liquid
into consideration.
For more information about the pumped liquids, warnings and
operating conditions, see fig. 10.
CAUTION
Flammable material
Minor or moderate personal injury
- Do not use the pump for flammable liquids, such
as diesel oil and petrol.
WARNING
Biological hazard
Death or serious personal injury
- In domestic hot-water systems, the temperature of
the pumped liquid must always be according to
local legislation.
CAUTION
Corrosive substance
Minor or moderate personal injury
- Do not use the pump for aggressive liquids, such
as acids and seawater.
12
2
/s (1 cSt) at 20 °C. If the

6.4 Identification

6.4.1 Nameplate

1
ALPHA1 XX-XX XXX
2
3
4
5
6
7
8
9
Fig. 13 Nameplate
Pos.
Description
1
Pump type, operating panel
Rated current [A]:
2
• Min.: Minimum current [A]
• Max.: Maximum current [A]
3
CE mark and approvals
EEI: Energy Efficiency Index
4
Part, according to EEI
5
Voltage [V]
6
Product number
7
Serial number
8
Model
9
Country of origin
Input power P1 [W]:
10
• Min.: Minimum input power P1 [W]
• Max.: Maximum input power P1 [W]
11
Maximum system pressure [MPa]
12
Enclosure class
13
Temperature class
Production code:
14
• 1st and 2nd figures: year
• 3rd and 4th figures: week
15
Frequency [Hz]
16
Data matrix code
10
11
12
13
14
15
16

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