Grundfos ALPHA1 B User manual

ALPHA1
Model B
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

2

Table of contents
3
ALPHA1
English (GB)
Installation and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Deutsch (DE)
Montage- und Betriebsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Français (FR)
Notice d'installation et de fonctionnement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Italiano (IT)
Istruzioni di installazione e funzionamento. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

English (GB)
4
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions describe ALPHA1
model B.
Sections 1-5 give the information necessary to be able to unpack,
install and start up the product in a safe way.
Sections 6-12 give important information about the product, as
well as information on service, fault finding and disposal of the
product.
CONTENTS
Page
1. General information
1.1 Target group
1.2 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety
instructions and service instructions.
The hazard statements are structured in the following way:
1. General information 4
1.1 Target group 4
1.2 Hazard statements 4
1.3 Notes 5
2. Receiving the product 5
2.1 Inspecting the product 5
2.2 Scope of delivery 5
3. Installing the product 5
3.1 Mechanical installation 5
3.2 Control box positions 6
3.3 Insulating the pump housing 7
4. Electrical installation 7
4.1 Assembling the plug 8
4.2 Dismantling the plug 9
5. Starting up the product 9
5.1 Before startup 9
5.2 First startup 9
5.3 Venting the pump 10
5.4 Venting the heating system 10
6. Product introduction 11
6.1 Product description 11
6.2 Applications 11
6.3 Pumped liquids 12
6.4 Identification 12
7. Control functions 13
7.1 Elements on the operating panel 13
7.2 Display 13
7.3 Light fields indicating the pump setting 13
7.4 Button for selection of pump setting 13
7.5 Control modes 14
7.6 Pump performance 16
8. Fault finding the product 17
9. Technical data 18
9.1 Data and operating conditions 18
9.2 Dimensions 19
10. Performance curves 20
10.1 Guide to performance curves 20
10.2 Curve conditions 20
10.3 Performance curves, ALPHA1, XX-40 (N) 21
10.4 Performance curves, ALPHA1, XX-50 (N) 22
10.5 Performance curves, ALPHA1, XX-60 (N) 23
10.6 Performance curves, ALPHA1, XX-80 (N) 24
11. Accessories 25
11.1 Unions 25
11.2 Insulating shells 26
11.3 ALPHA plugs 26
12. Disposing of the product 26
Read this document and the quick guide before
installing the product. Installation and operation must
comply with local regulations and accepted codes of
good practice.
This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision
or instruction concerning use of the appliance in a
safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children
without supervision.
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.

English (GB)
5
1.3 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
2. Receiving the product
2.1 Inspecting the product
Check that the product received is in accordance with the order.
Check that the voltage and frequency of the product match
voltage and frequency of the installation site. See section
6.4.1 Nameplate.
2.2 Scope of delivery
The box contains the following items:
• ALPHA1 pump
• ALPHA plug
• insulating shells
• two gaskets
• quick guide.
3. Installing the product
3.1 Mechanical installation
3.1.1 Mounting the product
Fig. 1 Mounting the product
The arrows on the pump housing indicate the flow direction
through the pump. See fig. 1, pos. A.
1. Fit the two gaskets when you mount the pump in the pipe. See
fig. 1, pos. B.
2. Install the pump with a horizontal motor shaft. See fig. 1, pos.
C. See also section 3.2 Control box positions.
3. Tighten the fittings.
Observe these instructions for explosion-proof
products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with
a black graphical symbol, indicates that an action
must not be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
TM05 3057 0612

English (GB)
6
3.2 Control box positions
Fig. 2 Control box positions
Always install the pump with a horizontal motor shaft.
• Pump installed correctly in a vertical pipe. See fig. 2, pos. A.
• Pump installed correctly in a horizontal pipe. See fig. 2, pos. B.
• Do not install the pump with a vertical motor shaft. See fig. 2,
pos. C and D.
3.2.1 Positioning of the control box in heating and domestic
hot-water systems
You can position the control box in position 3, 6 and 9 o'clock.
See fig. 3.
Fig. 3 Control box positions, heating and domestic hot-water
systems
3.2.2 Positioning the control box in air-conditioning and
cold-water systems
Position the control box with the plug pointing downwards. See
fig. 4.
Fig. 4 Control box position, air-conditioning and cold-water
systems
3.2.3 Changing the control box position
Fig. 5 Changing the control box position
You can turn the control box in steps of 90 °.
1. Remove the four screws.
2. Turn the pump head to the desired position.
3. Insert and cross-tighten the screws.
TM06 9089 4317TM06 9090 4317TM06 9091 4317
AB
CD
CAUTION
Hot surface
Minor or moderate personal injury
- Position the pump so that persons cannot
accidentally come into contact with hot surfaces.
CAUTION
Pressurised system
Minor or moderate personal injury
- Before dismantling the pump, drain the system or
close the isolating valve on either side of the
pump. The pumped liquid may be scalding hot and
under high pressure.
If you change the position of the control box, fill the
system with the liquid to be pumped or open the
isolating valves.
TM06 9092 4317
1
2
3
4

English (GB)
7
3.3 Insulating the pump housing
Fig. 6 Insulating the pump housing
You can reduce the heat loss from the pump by insulating the
pump housing with the insulating shells supplied with the pump.
See fig. 6.
4. Electrical installation
Carry out the electrical connection and protection in accordance
with local regulations.
• The motor requires no external motor protection.
• Check that the supply voltage and frequency correspond to
the values stated on the nameplate. See section
6.4.1 Nameplate.
• Connect the pump to the power supply with the plug supplied
with the pump. See steps 1 to 7.
TM06 9093 4317
Do not insulate the control box or cover the operating
panel.
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 be accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to earth.
Connect the pump to an external main switch with
a minimum contact gap of 3 mm in all poles.
DANGER
Electric shock
Death or serious personal injury
- If national legislation requires a Residual-Current
Device (RCD) or equivalent in the electrical
installation, or if the pump is connected to an
electric installation where an RCD is used as an
additional protection, this must be type A or better,
due to the nature of the pulsating DC leakage
current. The RCD must be marked with the symbol
shown below;

English (GB)
8
4.1 Assembling the plug
Step Action Illustration
1
Fit the cable gland
and plug cover to
the cable. Strip the
cable conductors
as illustrated.
TM05 5538 3812
2
Connect the cable
conductors to the
power supply plug.
TM05 5539 3812
3
Bend the cable
with the cable
conductors
pointing upwards.
TM05 5540 3812
4
Pull out the
conductor guide
plate and throw it
away.
TM05 5541 3812
5
Click the plug
cover onto the
power supply plug.
TM05 5542 3812
0.5 - 1.5 mm2
12 mm
∅5.5 - 10 mm
7 mm
17 mm
L
N
6
Screw the cable
gland onto the
power supply plug.
TM05 5543 3812
7
Insert the power
supply plug into
the male plug in
the pump control
box.
TM05 3059 0912
Step Action Illustration

English (GB)
9
4.2 Dismantling the plug
5. Starting up the product
5.1 Before startup
Do not start the pump until the system has been filled with liquid
and vented. Make sure that the required minimum inlet pressure
is available at the pump inlet. See section 9. Technical data. For
instructions on how to vent the system, see sections 5.3 Venting
the pump and 5.4 Venting the heating system.
5.2 First startup
After installing the product, see section 3. Installing the product,
turn on the power supply. The light in the operating panel shows
that the power supply has been switched on. See fig. 7.
The pump is factory set to intermediate proportional-pressure
curve, PP2.
Fig. 7 Starting the pump
Step Action Illustration
1
Loosen the cable
gland and remove it
from the plug.
TM05 5545 3812
2
Pull off the plug
cover while pressing
on both sides.
TM05 5546 3812
3
Add the conductor
guide plate to loosen
all three cable
conductors at the
same time.
If the guide plate is
missing, then loosen
the cable conductors
one by one by
pressing a
screwdriver gently
into the terminal clip.
TM05 5547 3812
4
The plug has now
been removed from
the power supply
plug.
TM05 5548 3812
TM06 9094 4317
1 x 230 V± 10 %
∽50/60 Hz
0/O
1/On

English (GB)
10
5.3 Venting the pump
Fig. 8 Venting the pump
The pump is self-venting through the system. You do not have to
vent the pump before startup.
Air in the pump may cause noise. This noise ceases when the
pump has run for a few minutes.
You obtain quick venting of the pump by setting the pump to
speed III for a short period. How fast the pump is vented depends
on the system size and design.
When you have vented the pump, i.e. when the noise has
ceased, set the pump according to the recommendations. See
section 7. Control functions.
You cannot vent the system through the pump. See section
5.4 Venting the heating system.
5.4 Venting the heating system
Fig. 9 Venting of the heating system
Vent the heating system via a vent valve installed above the
pump (1).
When the heating system has been filled with liquid, do as
follows:
1. Open the vent valve.
2. Set the pump to speed III.
3. Let the pump run for a short period.
4. Set the pump according to the recommendations. See section
7. Control functions.
Repeat the procedure, if necessary.
TM06 9104 4317
The pump must not run dry.
10 Min.
1
2
POWER
ON
TM06 9105 4317
The pump must not run dry.
10 Min.
2
1
3
POWER
ON