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Grundfos ALPHA1 Series User Manual

Grundfos ALPHA1 Series
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7
English (US)
4.4 Electrical connection
The motor is protected by the electronics in
the control box and requires no external
motor protection.
Check that the supply voltage and frequency
correspond to the values stated on the
pump.
Only connect the pump to the power supply
with the line cord or through the terminal box
supplied with the pump; see sections
4.4.1 For pump models with line cord and
4.4.2 For pump models with terminal box.
Do not modify and only use the line cord
supplied.
The lights on the control panel indicate that
the electrical supply has been switched on.
4.4.1 For pump models with line cord
Follow the procedure as shown in fig. 5.
Fig. 5 Connecting and removing the power
plug for line cord models
DANGER
Electric shock
Death or serious personal injury
- All electrical work must be carried
out by a qualified electrician in
accordance with the latest edition
of the National Electric Code and
state, local codes and regulations.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product.
Make sure that the power supply
cannot accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
- This pump has not been
investigated for use in swimming
pool or marine areas.
DANGER
Electric shock
Death or serious personal injury
- This pump is supplied with a
grounding conductor and
grounding-type attachment plug. To
reduce the risk of electric shock, be
certain that it is connected only to a
properly grounded, grounding-type
receptacle in accordance with the
National Electric Code and any
state, local governing codes and
regulations.
TM04 3420 1010
1
2
3
How to remove the cord plug from the
pump (bottom view):
How to insert the line cord plug onto the
pump (side view):
1. Insert a 1/8 in. flat blade
screwdriver into the slot.
2. Twist the screwdriver.
3. Pull the cord to remove it.

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Grundfos ALPHA1 Series Specifications

General IconGeneral
SeriesALPHA1
Voltage230 V
Temperature Range2°C to 110°C
Max Operating Pressure10 bar
Enclosure ClassIP42
Insulation ClassF
TypeCirculation Pump
Frequency50 Hz
EEI (Energy Efficiency Index)0.20
MaterialCast iron
Connection Size1"

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