Grundfos SCALA1 User manual

SCALA1
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

SCALA1
English (GB)
Installation and operating instructions ..........................................................5
Български (BG)
Упътване за монтаж и експлоатация.........................................................32
Čeština (CZ)
Montážní a provozní návod .................................................................59
Deutsch (DE)
Montage- und Betriebsanleitung .............................................................85
Dansk (DK)
Monterings- og driftsinstruktion .............................................................113
Eesti (EE)
Paigaldus- ja kasutusjuhend ...............................................................140
Español (ES)
Instrucciones de instalación y funcionamiento ..................................................166
Suomi (FI)
Asennus- ja käyttöohjeet ..................................................................194
Français (FR)
Notice d'installation et de fonctionnement .....................................................220
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας........................................................246
Hrvatski (HR)
Montažne i pogonske upute ................................................................273
Magyar (HU)
Telepítési és üzemeltetési utasítás...........................................................299
Italiano (IT)
Istruzioni di installazione e funzionamento .....................................................325
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija ............................................................351
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija ....................................................377
Nederlands (NL)
Installatie- en bedieningsinstructies ..........................................................403
Polski (PL)
Instrukcja montażu i eksploatacji ............................................................429
Português (PT)
Instruções de instalação e funcionamento .....................................................455
Română (RO)
Instrucţiuni de instalare şi utilizare ...........................................................482
Srpski (RS)
Uputstvo za instalaciju i rad ................................................................508
Русский (RU)
Паспорт, Руководство по монтажу и эксплуатации.............................................534
Svenska (SE)
Monterings- och driftsinstruktion.............................................................561
Slovensko (SI)
Navodila za montažo in obratovanje .........................................................587
3
Table of contents

Slovenčina (SK)
Návod na montáž a prevádzku..............................................................613
Türkçe (TR)
Montaj ve kullanım kılavuzu ................................................................639
Українська (UA)
Інструкції з монтажу та експлуатації ........................................................665
中文 (CN)
安装和使用说明书 .......................................................................691
日本語 (JP)
取扱説明書............................................................................. 717
한국어 (KO)
설치 및 작동 지침........................................................................743
Bosanski (BS)
Montažne i pogonske upute ................................................................769
Bahasa Indonesia (ID)
Petunjuk pengoperasian dan pemasangan ....................................................795
Қазақша (KZ)
Орнату жəне пайдалану нұсқаулықтары.....................................................821
Macedonian (MK)
Упатства за монтирање и ракување ........................................................847
Malaysia (MY)
Cara pemasangan dan pengendalian ........................................................875
Norsk (NO)
Installasjons- og driftsinstruksjoner ..........................................................901
(AR) ةيبرعلا
    ......................................................................927
ไทย (TH)
คำแนะนำในการติดตั้งและการใชงาน ...........................................................953
Tiếng Việt (VI)
Hướng dẫn lắp đặt và vận hành.............................................................980
Français (CA)
Notice d'installation et de fonctionnement ....................................................1006
Español (MX)
Instrucciones de instalación y operación .....................................................1033
Íslenska (IS)
Uppsetningar- og notkunarleiðbeiningar......................................................1060
4SCALA1
Table of contents

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ........................5
1.1 Hazard statements..........................5
1.2 Notes ..................................6
1.3 Target group..............................6
2. Product introduction........................6
2.1 Product description of SCALA 1..................6
2.2 Intended use .............................6
2.3 Pumped liquids ............................6
2.4 Identification..............................7
3. Receiving the product.......................7
3.1 Inspecting the product........................7
3.2 Scope of delivery...........................7
4. Installation requirements .....................8
4.1 Location ................................8
4.2 Maximum system pressure.....................8
5. Mechanical installation ......................8
5.1 Positioning and mounting the product ..............8
5.2 Connecting the pipe system ....................8
5.3 Installation examples .......................10
6. Electrical connection ......................12
6.1 Connecting products with a plug ................12
6.2 Connecting products without a plug ..............12
6.3 Motor protection ..........................12
7. Starting up the product .....................13
7.1 Priming the product ........................13
7.2 Starting up the pump .......................13
7.3 Operation ..............................13
7.4 Shaft seal run-in ..........................13
8. Control functions .........................14
8.1 Operating panel ..........................14
8.2 Auto reset ..............................15
8.3 Dry-running protection.......................15
8.4 Anti-cycling .............................15
8.5 Maximum runtime .........................15
9. Setting the product........................16
9.1 Initial setup with Grundfos Go Remote.............16
9.2 Expert settings ...........................16
9.3 Resetting to factory settings ...................18
10. SCALA1 twin booster configuration.............18
10.1 Operation modes and parameters ...............19
10.2 Setting SCALA1 twin booster system .............19
11. Service ...............................20
11.1 Maintenance ............................20
11.2 Customer service information ..................21
11.3 Service kits .............................21
12. Starting up after standstill ...................21
12.1 Deblocking the pump .......................21
13. Taking the product out of operation .............22
14. Storage ...............................22
15. Fault finding ............................22
15.1 Grundfos Eye SCALA1 ......................22
15.2 The pump does not start .....................23
15.3 The pump is not running .....................23
15.4 The pump is running........................24
15.5 The pump cuts out during operation ..............25
15.6 The pump performance is insufficient .............25
15.7 The pump starts and stops too frequently ...........25
15.8 The pump does not stop .....................26
15.9 The pump gives electric shocks .................26
15.10 Twin booster system fault finding ................26
15.11 Fault resetting............................26
16. Technical data ...........................27
16.1 Operating conditions........................27
16.2 Mechanical data ..........................27
16.3 Electrical data............................28
16.4 Dimensions and weights .....................28
16.5 Air handling mode performance curves ............29
17. Approvals..............................30
17.1 Bluetooth technology information ................30
17.2 FCC/ISED general requirements ................30
18. Disposing of the product ....................31
18.1 Disposing of hazardous or toxic materials...........31
19. Document quality feedback ..................31
1. General information
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.
Read this document before you install the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
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.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
5
English (GB)

1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
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.
1.3 Target group
These installation and operating instructions are intended for
professional as well as non-professional users.
2. Product introduction
2.1 Product description of SCALA 1
8
7
6
5
1
2
3
49
10
TM075026
Pos. Description
1 Lifting handle
2 Operating panel
3 Nameplate
4 Plug for access to pump shaft
5 Priming plug
6 Outlet connection
7 Inlet connection
8 Drain plug
9 External input connection
10 Twin connection
2.2 Intended use
Only use the product according to the specifications
stated in these installation and operating instructions.
The product is suitable for pressure boosting of clean water in
domestic water-supply systems.
2.3 Pumped liquids
DANGER
Explosion risk
Death or serious personal injury
‐Do not use the product for flammable liquids such as
diesel oil, petrol or similar liquids. The product must
only be used for water.
WARNING
Electric shock
Death or serious personal injury
‐Do not use the product for aggressive liquids. The
product must only be used for water.
WARNING
Toxic material
Death or serious personal injury
‐Do not use the product for toxic liquids. The product
must only be used for water.
If the water contains sand, gravel or other debris, there is
a risk of pump blockage and pump damage. Install a filter
on the inlet side or apply a floating strainer to protect the
pump.
The product is suitable for pumping clean, thin, non-aggressive and
non-explosive liquids without solid particles or fibres.
The product is designed for fresh water with a maximum chloride
content of 300 ppm and a free chlorine content below 1 ppm.
Examples of liquids:
• drinking water
• rainwater.
6
English (GB)

2.4 Identification
2.4.1 Nameplate for SCALA1
DK-8850 Bjerringbro Denmark
SCALA1 3-35
PN 99530404
Model A
1x230 V 50Hz
SN 00001
PC 19 36
Hmax
Hnom
Made in Hungary
Qnom
T.amb.max
Tliq.max/Psyst.max:
IP X4D
P1(W)I(A)
750
1,50,01Min.
Max. 3,3
45°C/0.8Mpa
35 m
20 m
3 m
3
/h
55 °C
1
2
3
4
5
6
7
8
9
10
11
12
17
16
13
14
15
TM075340
Example of nameplate
Pos. Description
1 Type designation
2 Product number
3 Serial number
4 Production code (year and week)
5 Max. head
6 Nominal head
7 Nominal flow rate
8 Max. ambient temperature
9 Enclosure class
10 Max. operating pressure
11 Max. liquid temperature
12 Minimum and maximum rated power
13 Model
14 Voltage and frequency
15 Approvals
16 Product QR code
17 Minimum and maximum rated current
2.4.2 Type key for SCALA1
Example:
SCALA1 . 5- . 25 . 1x230V . 50 Hz . SCHUKO
Description
SCALA1 Type range
3
5Max. flow rate [m3/h]
25
35
45
55
Max. head [m]
1x230V
1x115V Voltage [V]
50 Hz
60 Hz Frequency [Hz]
SCHUKO (Type E/F)
No plug
Thailand (Type O)
Australia (Type I)
UK (Type G)
US (Type NEMA 5-15, NEMA 6-15)
Argentina (Type I)
Plug type
3. Receiving the product
3.1 Inspecting the product
On receipt of the pressure manager, do the following:
1. Check that the pressure manager is as ordered.
If the pressure manager is not as ordered, contact the supplier.
2. Make sure that the supply voltage and frequency correspond to
the values stated on the pressure manager nameplate.
3.2 Scope of delivery
The box contains the following items:
• 1 Grundfos SCALA1 pump
• 1 quick guide
• 1 safety instructions booklet.
7
English (GB)

4. Installation requirements
4.1 Location
The product can be installed both indoors and outdoors.
Please observe the following:
• Install the product to enable easy inspection, maintenance, and
service.
• We recommend that you place the product as close as possible
to the liquid to be pumped.
• We recommend that you install the product near a drain or in a
drip tray connected to a drain in order to lead away possible
condensation from cold surfaces.
4.1.1 Installation of the product in a frosty environment
Protect the product from freezing if it is to be installed outdoors
where frost may occur.
4.1.2 Minimum space
The pump requires a minimum space of 495 x 225 x 340 mm (19.5
x 8.9 x 13.4 inches).
Even though the pump does not require much space, we
recommend that you leave enough space for service and
maintenance access.
4.2 Maximum system pressure
Make sure that the system in which the pump is installed
is designed for the maximum pump pressure.
When installing a non-return valve in the plumbing
system, make sure that the system has an expansion tank
at the water heater and that the pressure-relief valve in
the water heater is plumbed to a drain. Carry out the
installation in accordance with local regulations.
The maximum inlet pressure depends on the head at the actual
duty point. The sum of the inlet pressure and the head must not
exceed the maximum system pressure.
We recommend installing a pressure-relief valve to protect the
pump so that the outlet pressure does not exceed the maximum
system pressure.
5. Mechanical installation
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
WARNING
Electric shock
Death or serious personal injury
‐Mount the product horizontally to avoid condensation
in the electrical insulation inside the control box.
WARNING
Chemical hazard
Death or serious personal injury
‐Before the pump is used for supplying drinking water,
flush the pump thoroughly with clean water.
WARNING
Biological hazard
Death or serious personal injury
‐Before the pump is used for supplying drinking water,
flush the pump thoroughly with clean water.
5.1 Positioning and mounting the product
Always place the product in a horizontal position. A higher
inclination can cause electric shock due to condensation
in the electrical insulation inside the control box.
1. Place the product in a horizontal position with a maximum
inclination angle of ± 5°. The base plate must face downwards.
2. Fasten the product to a solid horizontal foundation by means of
screws through the holes in the base plate.
TM075005
Horizontal foundation
A
C
B
TM075004
Base plate
Pos. [mm (in)]
A 135 (5.3)
B 163 (6.4)
C 174 (6.9)
5.2 Connecting the pipe system
Make sure that the pump is not stressed by the pipe
system.
Always loosen and tighten the union nuts on the inlet and
outlet ports by hand. Damage to the inlet and outlet parts
increases the risk of leakage.
We recommend that you install isolating valves on the
inlet and outlet side of the pump.
1. Turn the union nuts by hand to loosen the inlet and outlet ports.
2. Seal the pipe fittings with thread sealing tape.
3. Carefully screw the inlet and outlet connections onto pipe fittings
using a pipe wrench or a similar tool. Keep the union nut on the
pipe fitting if you have removed it from the pump. The pump is
equipped with flexible connections, ± 5°, to facilitate the
connection of inlet and outlet pipes.
4. Fasten the connections to the inlet and outlet ports by holding
the connection with one hand and tightening the union nut with
the other hand.
8
English (GB)

1
2
3
TM075341
Inlet pipe with a gradual upward slope towards the pump
Example:
Pos. Description
1 Inlet and outlet port
2 Union nut
3 Pipe fitting
5.2.1 Inlet and outlet pipes
Follow these general precautions when connecting the inlet and
outlet pipes.
Do not let the pump support the pipes. Use pipe hangers
or other supports at proper intervals to provide pipe
support near the pump.
The internal diameter of the pipes must never be smaller
than the diameter of the pump ports.
• Install the pipes so that air pockets are avoided, especially on
the inlet side of the pump.
• Use eccentric reducers with the tapered side down.
• Make sure the pipes are as straight as possible to avoid
unnecessary bends and fittings. We recommend long-radius 90
° pipe bends to decrease friction loss.
• Run the inlet pipe as direct as possible and, ideally, make sure
that the length is at least ten times the pipe diameter.
• If possible, run a horizontal inlet line. We recommend a gradual
upward slope for pumps operating in suction-lift conditions.
• A short pipe must be of the same diameter as the inlet port or
larger.
• A long pipe must be one or two sizes larger than the inlet port,
depending on the length.
TM040338
Recommended pipe installation to avoid friction and air pockets
TM075387
Correct pipe sizing for connection to the pump inlet or outlet
5.2.2 Maximum tapping point
We recommend that you install the unit so that the height between
the unit and the highest tapping point does not exceed the values
shown in the table below.
H
TM075383
Maximum tapping point
Model Maximum height [m]
3-25 10
3-35 15
3-45 20
5-25 10
5-55 25
In case the highest tapping point is higher than the values in this
table, the external input may be used.
9
English (GB)

5.3 Installation examples
We recommend that you follow the installation examples.
Valves are not supplied with the pump.
5.3.1 Suction from a well
6
54
23
1
H2 H1
TM075006
Pos. Description
1 Highest tapping point
2 Isolating valve
3 Flexible hoses
4 Pipe support
5 Inlet filter
6 Foot valve with strainer
H1 Maximum suction lift: 8 m (26.2 ft)
H2 Inlet pipe must be submerged at least 0.5 m (1.64
ft)
5.3.2 Suction from a tank
1
2
34
6
7
8
5
TM075007
Pos. Description
1 Highest tapping point
2 Pipe hangers
3 Isolating valve
4 Flexible hoses
5 Drain to sewer
6 Inlet filter
7 Freshwater tank
8 Foot valve with strainer
9 Minimum 1-degree inclination
10
English (GB)

5.3.3 Mains water pressure boosting
In some countries, boosting from the city water mains is
prohibited. Please follow local regulations regarding this
application.
49
1
37
2
5
10
62
3
8
TM075262
Mains water pressure boosting, SCALA1
Pos. Description
1 Highest tapping point
2 Pipe hangers and supports
3 Isolating valves
4 Flexible hoses
5 Bypass valve
6
Optional pressure-reducing valve on the inlet side
if the system pressure can exceed 8 bar (115
psi).
7
Optional pressure relief valve on the outlet side if
the installation cannot withstand the outlet
pressure.
8Drip tray. Install the pump on a small stand to
prevent the ventilation holes from being flooded.
9 Pressure gauge
10 Mains water pipe
5.3.4 Inlet pipe length
The overview below shows the different possible inlet pipe lengths,
depending on the vertical pipe length. The overview is only intended
as a guide.
H
L
TM075259
Inlet pipe length
DN 32 DN 40
H
[m (ft)]
L
[m (ft)]
H
[m (ft)]
L
[m (ft)]
0 (0) 68 (223) 0 (0) 207 (679)
3 (10) 43 (141) 3 (10) 129 (423)
6 (20) 17 (56) 6 (20) 52 (171)
7 (23) 9 (30) 7 (23) 26 (85)
8 (26) 0 (0) 8 (26) 0 (0)
Pre-conditions:
Maximum flow velocity: 1 l/s (16 gpm).
Inside roughness of pipes: 0.01 mm (0.0004 in).
Size Inside pipe diameter
[mm (in)]
Pressure loss
[mm (psi/ft)]
DN 32 28 (1.1) 0.117 (5/100)
DN 40 35.2 (1.4) 0.0387 (1.6/100)
11
English (GB)

6. Electrical connection
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
WARNING
Electric shock
Death or serious personal injury
‐The protective earth (PE) of the power outlet must be
connected to the protective earth of the pump. The
plug must have the same PE connection system as
the power outlet.
‐
All electrical connections must be carried out by qualified
persons in accordance with local regulations.
If the power cable is damaged, it must be replaced by the
manufacturer, the manufacturer's service partner or a
similarly qualified person.
Make sure that the electrical installation supports the rated
current [A] of the product. See the nameplate of this
product.
6.1 Connecting products with a plug
WARNING
Electric shock
Death or serious personal injury
‐Make sure that the power plug delivered with the
product is in compliance with local regulations.
‐The plug must have the same protective earth (PE)
connection system as the power outlet. If not, use a
suitable adapter if allowed by local regulations.
Do not turn on the power supply until the pump has been
filled with liquid.
1. Switch off the power supply to the power socket.
2. Connect the plug to the power socket.
6.2 Connecting products without a plug
WARNING
Electric shock
Death or serious personal injury
‐Power cables without a plug must be connected to a
supply disconnecting device incorporated in the fixed
wiring according to the local wiring rules.
‐The protective earth (PE) of the power outlet must be
connected to the protective earth of the pump. The
plug must have the same PE connection system as
the power outlet.
Do not turn on the power supply until the pump has been
filled with liquid.
If the product is delivered with a cable but without a plug, connect
the cable to the external main switch or attach a plug.
Connecting the cable to an external main switch
1. Strip the cable.
2. Thread each individual wire to the correct terminal in the
external main switch.
Wiring a plug
1. Strip the cable.
2. Loosen the two screws holding the cable clamp and pull the
cable through.
3. Thread each individual wire to the correct terminal.
4. Tighten the terminal screws and the cable clamp screw. Make
sure not to overtighten the cable clamp screw.
1
23
4
TM072505
Example, plug wiring
Pos. Description
1 PE: Earth, yellow and green wire
2 N: Neutral, blue wire
3 L: Live, brown wire
4 Cable clamp
6.3 Motor protection
The pump incorporates current- and temperature-dependent motor
protection. If the pump is blocked or otherwise overloaded, the built-
in thermal switch will cut out. When the motor has cooled
sufficiently, it will restart automatically.
No external motor protection is required.
12
English (GB)

7. Starting up the product
Do not turn on the power supply until the pump has been
filled with liquid.
7.1 Priming the product
1. Unscrew the priming plug and pour at least 1.7 litres (0.45
gallons) of water into the pump housing.
2. Screw the priming plug on again.
Example:
TM075342
Priming the pump
If the suction depth exceeds 6 m (20 ft), it may be
necessary to prime the pump more than once.
Always tighten priming and drain plugs by hand.
7.2 Starting up the pump
After installing and priming, follow the following steps to start up the
pump.
1. Prime the pump according to the priming instructions.
2. Open all isolating valves.
3. Open the tapping point that is the highest or furthest away from
the pump to let out air trapped in the system.
4. Turn on the pump's power supply. All the symbols on the
operating panel will light up briefly. The Stop icon remains on.
5. Press the Start/Stop button to start the pump. If there is a
suction lift, it may take up to five minutes before the pump
delivers water depending on the length and diameter of the inlet
pipe.
6. When the water flows through the tapping point without air,
close the tapping point. The pump will stop after approx. 10
seconds.
7. The startup is now completed, and the pump is ready for
operation.
7.3 Operation
7.3.1 Normal operation
When water is consumed in the water supply system, the pump
starts if the starting conditions of the pump are fulfilled. This
happens, for example, when a tap is opened, making the pressure
in the system drop.
The pump stops when the consumption stops, i.e. when the tap is
closed.
7.3.1.1 Starting and stopping conditions
Starting conditions
The pump starts when at least one of the following conditions is
fulfilled:
• The flow is higher than Qmin (1.5 l/min).
• The pressure is lower than pstart.
Stopping conditions
The pump stops with a time delay of 10 seconds when both of the
following conditions are fulfilled:
• The flow is lower than Qmin (1.5 l/min).
• The pressure is higher than pstart.
The pstart values are shown in Technical data.
7.4 Shaft seal run-in
The shaft seal faces are lubricated by the pumped liquid. A slight
leakage from the shaft seal of up to 10 ml per day or 8 to 10 drops
per hour may occur. Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be detected.
When the pump is started for the first time, or when the shaft seal
has been replaced, a certain run-in period is required before the
leakage is reduced to an acceptable level. The time required for this
depends on the operating conditions, that is, every time the
operating conditions change, a new run-in period will be started.
Leaking liquid will drain through the drain holes in the motor flange.
Install the product in such a way that leakage cannot cause
undesirable collateral damage.
13
English (GB)

8. Control functions
8.1 Operating panel
SCALA1
Stop
TM075407
Symbol Description
Grundfos Eye: The indicator light shows the operating
status of the product.
Start/Stop:Press the button to make the product ready
for operation or to start and stop the product.Start:If
you press the button when the product is stopped, the
product starts if no other functions with higher priority
have been enabled. Stop:If you press the button when
the product is running, the product always stops.
Pump is stopped. The stop icon will light up on the
display.
Bluetooth connect button enables communication with
Grundfos GO Remote. Connection indicator light. It will
light up when the connection to Grundfos GO Remote
is established.
Reset the alarms.
The following alarm lights indicate an issue with installation:
Leakage in the system.
Dry-running or water shortage.
The maximum runtime has been exceeded.
14
English (GB)

8.2 Auto reset
This function allows the pump to automatically check if the
operating conditions are back to normal. If the operating conditions
are back to normal, the alarm indication will be reset automatically.
The factory setting is: ON
The auto reset function works as follows:
Alarm Auto reset action Configurable Default
Dry run
The pump will attempt eight restarts at five-minute intervals. If not
successful, this cycle will be repeated after 24 hours.
In twin configuration Duty/Assist, there is no reset if only one pump is
in dry run alarm. If both pumps are in dry run, the reset will be
staggered.
In twin configuration Duty/Standby, the pump will attempt to restart
immediately independent of the second pump.
YES ON
Anti-cycling This function will attempt to reset after 12 hours, and the pump will
return to normal operation. YES ON
Max. runtime None Fixed disabled
Missed twin pump Auto reset is performed by the system when communication is
reestablished. Fixed enabled
8.3 Dry-running protection
If a dry-running alarm has been activated, the cause
should be identified before the pump is restarted to
prevent damage to the pump.
The unit incorporates dry-running protection that automatically
stops the pump in case of dry-running. The dry-running protection
functions differently during priming and operation.
8.3.1 Dry-running during priming
If the unit does not detect pressure and flow within 5 minutes after it
has been connected to a power supply, and the pump has started,
the dry-running alarm is activated.
8.3.2 Dry-running during operation
If the unit does not detect pressure and flow within 40 seconds
during normal operation, the dry-running alarm is activated.
8.3.3 Resetting of dry-running alarm
If the dry-running alarm has been activated, the pump can be
restarted manually by pressing [Reset]. If the unit does not detect
pressure and flow within 40 seconds after restarting, the dry-
running alarm is reactivated.
This protection is always ON.
Dry-running or water shortage.
8.4 Anti-cycling
If there is a minor leakage in the system, or a tap has not been
closed entirely, the unit will start and stop the pump periodically. To
avoid cycling, the anti-cycling function of the unit will stop the pump
and indicate an alarm. The anti-cycling function can be configurated
in Grundfos GO Remote.
Off
If the pump starts 40 times in a fixed pattern, a LED icon will
signalize cycling. The pump will remain in normal operation.
On
If the pump starts and stops in a fixed pattern, there is a leakage in
the system, and the pump will stop and show red Grundfos Eye and
LED icon indication.
The factory setting for this function is OFF.
Leakage in the system.
8.5 Maximum runtime
This function is a timer that can turn off the pump if it runs
continuously for a certain amount of time. This time period can be
adjusted via Grundfos GO Remote.
Off
The pump will run depending on the operating conditions
disregarding the continuous operation.
On
The pump will stop after the specified period of continuous
operation, and it will show the alarm Maximum runtime exceeded.
This alarm will always need to be reset manually.
The factory setting for this function is OFF.
Maximum runtime exceeded.
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English (GB)

9. Setting the product
9.1 Initial setup with Grundfos Go Remote
9.1.1 Startup wizard on Grundfos GO Remote
The product is designed for Bluetooth communication with Grundfos
GO Remote.
Once you have connected your product to Grundfos GO Remote, a
startup wizard appears. Follow the instructions to make your
settings.
Grundfos GO enables you to set functions and gives you access to
status overviews, technical product information and current
operating parameters.
9.1.2 Connecting to Grundfos GO Remote
Before connecting the product to Grundfos GO Remote, the
Grundfos GO Remote app must be downloaded to your smartphone
or tablet. The app is free of charge and available for iOS and
Android devices.
1. Open Grundfos GO Remote on your device. Make sure that
Bluetooth is enabled.
Your device must be within reach of the product to establish
Bluetooth connection.
2. Press the Bluetooth CONNECT button on Grundfos GO
Remote.
3. Press the connect button on the operating panel. The blue LED
above the connect button is flashing until your device is
connected. Once the connection is established, the LED will be
permanently on.
Grundfos GO Remote is now loading the data for the product.
9.2 Expert settings
Grundfos GO Remote allows you to enable additional conditions for
pump operation.
9.2.1 External input
This pump allows connecting external input as an additional
condition to the pump operation.
External input may be beneficial in the following situations:
• level switch in roof tank filling to stop the pump when the tank is
full
• inlet pressure switch to stop the pump in case of raised inlet
pressure
• moisture detection switch in irrigation applications to run the
pump only when the ground is dry.
External input must be 24 V digital input and can be connected
through the opening on the pump body. The cable length is limited
to 30 m.
External input can only be set up with Grundfos GO
Remote.
9.2.1.1 Setting up external input
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
WARNING
Electric shock
Death or serious personal injury
‐The protective earth (PE) of the power outlet must be
connected to the protective earth of the pump. The
plug must have the same PE connection system as
the power outlet.
‐
All electrical connections must be carried out by qualified
persons in accordance with local regulations.
If the power cable is damaged, it must be replaced by the
manufacturer, the manufacturer's service partner or a
similarly qualified person.
Make sure that the electrical installation supports the rated
current [A] of the product. See the nameplate of this
product.
12
3
4
TM075384
Connecting external input
Pos. Description
1 Lid on PCB cover
2 Terminals
3 Cable clip
4 Cable gland
1. Remove the screws and lift the pump cover.
2. Open the lid on the PCB cover.
3. Pull the cable through the gland and the clip.
4. Connect to the terminals.
5. Fix the clip to hold cable in place.
6. Close the lid.
7. Return the pump cover and screw it in place.
8. Power on the pump and connect with Grundfos GO Remote.
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English (GB)

9.2.1.2 Roof tank filling
In the installation below, the level switch is used to signal the pump
to run when the water level in the tank drops.
The example below shows the float switch in the input closed
position. In this case, the pump should not run, and Grundfos GO
Remote settings indicate that the input is closed.
If you exceed the maximum tapping point of the pump, the external
input should run on input only.
1
5
2
3
4
TM075330
Pos. Description
1 Float switch
2 External input (switch) cable
3 Pump
4 Water source (tank)
5 Roof tank
9.2.2 Calendar function
The operation of SCALA1 can be scheduled in the calendar
function of the Grundfos GO Remote app.
This function determines when the pump is allowed to run and
when not. It is particularly beneficial for irrigation and agriculture
purposes, where the pump should be active only within a certain
period of time.
9.2.2.1 Enabling calendar function
To enable this function, go to Grundfos GO Remote app and follow
these steps:
1. Connect to the pump.
2. Go to Scheduling.
3. Press Save schedule.
The pump will now run on demand, but only within the time period
set in the calendar function.
When the pump has been stopped by the calendar
function, it will be indicated on the HMI by a steady yellow
Grundfos Eye.
9.2.3 Performance modes
Different performance modes can be selected for SCALA1.
Selecting the correct mode is dependent on the installation.
There are 3 performance modes for SCALA1:
• self-priming
• air handling
• positive inlet.
The default mode is self-priming, which will be the desired mode for
most installations.
Performance mode Description Benefits
Self-priming
The self-priming
valve is fully
opened.
Best performance
and lowest noise
level in suction
applications.
Air handling1)
When there is air in
the installations, it
can accumulate in
the hydraulics.
Partially closing the
self-priming valve
can provide
assistance.
Improves the pump's
capability to handle
air in the water.
Positive inlet
If the installation has
a positive inlet
pressure, the pump
is always primed,
and the self-priming
valve can be fully
closed.
Removes sound
associated with self-
priming valve
movement in
installations with
positive inlet
pressure.
1) This performance mode will result in some performance loss and a slight
increase in noise level. Please refer to technical data for more
information.
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English (GB)

9.2.3.1 Selecting the performance mode
If the performance mode needs to be changed from the default
setting, follow these steps:
1. Remove the pump cover.
a. Unscrew and remove the priming plug from the pump.
b. Loosen and remove the inlet and outlet connections from the
pump.
c. Loosen and pull away the pump cover to remove it from the
pump.
TM075488
Remove the pump cover
2. Locate the performance mode knob.
3. Using a size 10 hex key, turn the knob to the desired selection.
Self-priming
Air handing
Positive inlet
TM075489
Rotate knob to select performance mode.
4. Return the pump cover and reconnect the priming plug and
connections.
9.3 Resetting to factory settings
To reset the pump to factory settings via the HMI:
1. Press and hold [Enable/Disable] and [Reset] buttons
simultaneously for 5 seconds.
Enable/Disable button
Reset button
It is also possible to reset to factory settings in Grundfos GO
Remote.
10. SCALA1 twin booster configuration
1
3
2
TM075400
SCALA1 twin booster system
Pos. Description
1 Inlet and outlet manifolds
2 Isolation valves
3 Twin base plate
Not pictured: communication cable and fixing
screws
SCALA1 can be easily set up as a twin boosting system by using
the accessory set and Grundfos GO Remote.
In the twin setup, the two SCALA1 pumps communicate together
via a cable included in the accessory set.
The twin boosting system is beneficial when the water flow demand
is higher, or a system with a standby pump is required.
Once connected, a priority will be assigned automatically to the
pumps.
In the twin booster configuration, an HMI on one pump will act as
system HMI, meaning that all actions done on one pump HMI will
be propagated to the other pump in the system.
All the alarms and functions of the pump are also available for the
twin system.
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English (GB)

10.1 Operation modes and parameters
Once SCALA1 is installed as a twin booster system, it can run in
two different operation modes.
Duty/Standby
In Duty/Standby operation mode, only one pump will run at a time in
the twin system. This means that the maximum performance of the
system will be the same as the maximum performance of a single
SCALA1 unit. In case one pump fails to start, the other one will run.
The pumps will switch priority at the start based on the alternation
settings.
Duty/Assist
Running in Duty/Assist operation mode brings more flow on the
outlet side, as both pumps can run at the same time. A pump with
an assigned priority will start first and, in case it cannot deliver the
necessary flow, the second pump will start. In case one pump fails
to start, the system will continue running with one pump. The
pumps will switch priority at the start based on the alternation
settings.
Alternation can be set based on runtime or number of starts. This is
done through the Grundfos GO Remote application, either in the
initial setup or through the Settings tab on the Dashboard screen.
"No alternation" is only available for selection when
operating in Duty/Assist.
10.2 Setting SCALA1 twin booster system
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
WARNING
Electric shock
Death or serious personal injury
‐The protective earth (PE) of the power outlet must be
connected to the protective earth of the pump. The
plug must have the same PE connection system as
the power outlet.
‐
All electrical connections must be carried out by qualified
persons in accordance with local regulations.
If the power cable is damaged, it must be replaced by the
manufacturer, the manufacturer's service partner or a
similarly qualified person.
Make sure that the electrical installation supports the rated
current [A] of the product. See the nameplate of the
product.
Twin base plate, manifolds and communication cable are available
in the SCALA twin accessory set.
To enable the twin operation of two SCALA1 pumps, follow the
steps below.
1. Position both pumps on the twin base plate without fastening
them.
2. Open the cover of both pumps by removing the screws.
3. Punch open the vacant hole/slot on the side of the pump body
and pull one end of the communication cable through the hole.
PUNCH HOLE
TM075385
Punch hole for communication cable
4. Plug in the communication cable in the control board of the
pump.
COMMUNICATION CABLE INPUT
TM075388
Connect communication cable
5. Connect the other end of the communication cable to the
second pump according to the instructions in steps 2 - 4.
6. Fasten both pumps to the base plate.
7. Connect the inlet and outlet manifolds to both pumps.
8. Prime both pumps according to the priming instructions.
TM075386
Fasten pumps to base plate and connect inlet and outlet manifolds
9. Follow the startup instructions.
10. Connect to Grundfos GO Remote and follow the initial setup
screen.
11. Press the connect button on the operating panel of one of the
pumps to establish the connection between the twin pumps
12. Follow the instructions in Grundfos GO Remote for setting up
the twin booster system.
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English (GB)

10.2.1 Setting SCALA1 twin booster with Grundfos GO Remote
Setting the twin booster with Grundfos GO Remote can be done in
two ways:
• initial setup: run on first connection, or through the assist tab in
the Dashboard
• settings tab in the Dashboard.
Choose the correct parameters for:
• operation mode
• alternation type
• alteration value.
Examples:
• If the SCALA1 booster system is set up as Duty/Standby with
alternation on the number of starts = 1, this means that every
time the system starts a different pump is running.
• If the SCALA1 booster system is set up as Duty/Standby with
alternation on the number of starts = 5, this means that pump 1
will start first for 5 times before switching the priority to pump 2.
• If the SCALA1 booster system is set up as Duty/Assist with
alternation on runtime = 5h, this means that pump 1 will start
first every time until the system reaches 5 hours of operating
time. Then the priority will be swapped between pumps.
Range and default values for alternation
Minimum Default Maximum Resolution
Alternation of
starts and stops 1 1 100 1
Alternation
runtime [h] 0.5 5 100 0.5
11. Service
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before you start any work
on the product. Make sure that the power supply
cannot be switched on accidentally.
WARNING
Chemical hazard
Death or serious personal injury
‐Make sure that the product has only been used for
water. If the product has been used for pumping
aggressive liquids, flush the system with clean water
before you start work on the product.
WARNING
Biological hazard
Death or serious personal injury
‐Make sure that the product has only been used for
water. If the product has been used for pumping
aggressive liquids, flush the system with clean water
before you start work on the product.
WARNING
Pressurised system
Death or serious personal injury
‐Before dismantling the pump, drain the system or
close the isolating valves on both sides of the pump.
Slowly loosen the drain plug and unpressurise the
system.
CAUTION
Impurities in the water
Minor or moderate personal injury
‐Before the pump is used for supplying drinking water,
flush the pump thoroughly with clean water.
‐Use spare parts approved by Grundfos.
Only qualified persons are allowed to service the pump.
11.1 Maintenance
The pump is maintenance-free, but we recommend that you check
and clean the condensation plugs and integrated non-return valve
once per year or as needed.
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English (GB)