2.5.2 Type key
Example: ALPHA2 GO 25-40 180 220-240 V
Code Explanation Designation
ALPHA2 GO
Grundfos circulator
pump
Pump type
25
Nominal diameter (DN)
of inlet and outlet ports
Connections
40 Maximum head [dm]
130 Port-to-port length [mm]
220-240 V Voltage
2.6 Approvals and markings
Any changes or modifications to this equipment not
expressly approved by the party responsible for
compliance could void the user’s authority to operate this
equipment.
CAUTION
Biological hazard
Minor or moderate personal injury
‐ This product is not approved for drinking water
applications.
3. Receiving the product
3.1 Inspecting the product
CAUTION
Crushing of feet
Minor or moderate personal injury
‐ Wear safety shoes when handling the product.
CAUTION
Sharp element
Minor or moderate personal injury
‐ Wear protective gloves.
1. Make sure that the delivered product corresponds to the order.
2. Make sure that the voltage and frequency of the product match
the voltage and frequency of the installation site.
Related information
2.5.1 Nameplate
3.2
Scope of delivery
The box contains the following items:
• 1 pump
• 1 power plug
• 2 gaskets
• insulating shells
• 1 quick guide.
4. Mechanical installation
WARNING
Electric shock
Death or serious personal injury
‐ A damaged product must be repaired or replaced by
Grundfos or a service workshop authorized by
Grundfos.
CAUTION
Crushing of feet
Minor or moderate personal injury
‐ Wear safety shoes when handling the product.
CAUTION
Sharp element
Minor or moderate personal injury
‐ Wear protective gloves.
The pump must always be installed with a horizontal
motor shaft within ± 5°.
The pump is a non-submersible pump.
4.1 Mounting the pump
Make sure that the pump orientation is correct.
The arrows on the pump housing indicate the flow
direction through the pump.
1. Close the inlet and outlet valves.
2. Fit the two gaskets supplied with the pump when you mount the
pump in the pipes.
3. Tighten the unions.
4. Make sure to use an allowed control box position.
5. Mount the power plug.
6. Mount the PWM signal plug if used.
For illustrations of the installation, see the ALPHA2 GO
quick guide.
ALPHA2 GO quick guide
Related information
4.2 Changing the pump head position
7
English (GB)
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