Pumped Liquids; Identification - Grundfos ALPHA2 Series Installation And Operating Instructions Manual

6.3 Pumped liquids

For more information about the pumped liquids, warnings and
operating conditions, see fig. 14.
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.
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 above 50 °C
due to the risk of legionella.
WARNING
Biological hazard
Death or serious personal injury.
- In domestic hot-water systems, the pump is
permanently connected to the mains water.
Therefore, do not connect the pump by a hose.
CAUTION
Corrosive substance
Minor or moderate personal injury.
- Do not use the pump for aggressive liquids, such
as acids and seawater.
2
/s (1 cSt) at 20 °C. If the

6.4 Identification

6.4.1 Nameplate
1
ALPHA 2 25-60 180
AUTO
2
3
4
5
6
7
8
9
Fig. 17 Nameplate
Pos. Description
1 Pump type
Rated current [A]:
2 • Min.: Minimum current [A]
• Max.: Maximum current [A]
3 CE mark and approvals
EEI: Energy Efficiency Index
Part 1: Indicating whether the pump is tested in
accordance with the following:
4
Part 2: Stand-alone product
Part 3: Integrated product according to EN
16297-1:2012 and EN 16297-2:2012.
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 QR code
ADAPT
10
11
12
13
14
15
16
11