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http://waterheatertimer.org/Water-heater-recirculation-system.html
GRUNDFOS INSTRUCTIONS
SCALA
Installation and operating instructions
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English (GB) Installation and operating instructions
English (GB)
Original installation and operating instructions
These installation and operating instructions describe Grundfos
SCALA2 domestic water supply pumps.
Sections 1-5 give the information necessary to be able to unpack,
install and start up the product in a safe way.
Sections 6-14 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
1.3 Notes
2. Receiving the product
2.1 Inspecting the product
2.2 Scope of delivery
3. Installing the product
3.1 Location
3.2 System sizing
3.3 Mechanical installation
3.4 Electrical connection
4. Starting up the product
4.1 Priming the pump
4.2 Starting the pump
4.3 How to set the correct pressure
4.4 Shaft seal run-in
5. Handling and storing the product
5.1 Handling the product
5.2 Storing the product
6. Product introduction
6.1 Product description
6.2 Intended use
6.3 Pumped liquids
6.4 Identification
7. Control functions
7.1 Menu overview, SCALA2
8. Setting the product
8.1 Setting the outlet pressure
8.2 Locking and unlocking the operating panel
8.3 Expert settings, SCALA2
8.4 Resetting to factory settings
9. Servicing the product
9.1 Maintaining the product
9.2 Customer service information
9.3 Service kits
10. Starting up the product after standstill
10.1 Deblocking the pump
11. Taking the product out of operation
12. Fault finding the product
12.1 Grundfos Eye operating indications
12.2 Fault resetting
12.3 Fault finding chart
13. Technical data
13.1 Operating conditions
13.2 Mechanical data
13.3 Electrical data
13.4 Dimensions and weights
14. Disposing of the product
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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.
2
2
2
3
1. General information
3
3
1.1 Target group
3
These installation and operating instructions are intended for
3
professional as well as non-professional users.
3
3
1.2 Hazard statements
3
The symbols and hazard statements below may appear in
6
Grundfos installation and operating instructions, safety
6
instructions and service instructions.
6
6
7
7
7
7
7
7
7
8
8
8
9
9
The hazard statements are structured in the following way:
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.
2
Page 3
1.3 Notes
B
A
C
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.
2. Receiving the product
3.2 System sizing
Make sure that the system in which the pump is
incorporated is designed for the maximum pump
pressure.
The pump is factory-set to 3 bar (44 psi) outlet pressure which
can be adjusted according to the system in which it is
incorporated.
The tank precharge pressure is 1.25 bar (18 psi).
In case of suction lift of more than six metres, the pipe resistance
on the outlet side must be at least two metres water column or 3
psi at any given flow in order to obtain optimum operation.
3.3 Mechanical installation
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.
3.3.1 Positioning the product
Always mount the pump on the base plate in a horizontal position
with a maximum inclination angle of ± 5 °.
3.3.2 Foundation
Fasten the pump to a solid horizontal foundation by means of
screws through the holes in the base plate. See figs 1 and 2.
English (GB)
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 the
voltage and frequency of the installation site. See section
6.4.1 Nameplate.
2.2 Scope of delivery
The box contains the following items:
• 1 Grundfos SCALA2 pump
• 1 quick guide
• 1 safety instructions booklet.
3. Installing the product
3.1 Location
The pump can be installed indoors or outdoors, but it must not be
exposed to frost.
We recommend that you install the pump near a drain or in a drip
tray connected to a drain in order to lead away possible
condensation from cold surfaces.
Install the pump in such a way that no undesirable
collateral damage can arise due to leakage.
If the unlikely event of an internal leakage occurs, the
liquid will be drained through the bottom of the pump.
3.1.1 Minimum space
The pump requires a minimum space of 430 x 215 x 325 mm (17
x 8.5 x 12.8 inches).
Even though the pump does not require much space, we
recommend that you leave enough space for service and
maintenance access.
3.1.2 Installing the product in frosty environment
Protect the pump from freezing if it is to be installed outdoors
where frost may occur.
TM06 5729 5315 TM06 3809 1015
Fig. 1 Horizontal foundation
Fig. 2 Base plate
[mm (inches)]
A 181 (7.13)
B 130 (5.12)
C 144 (5.67)
3
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3.3.3 Connecting the piping system
1
2
3
Rubber pad
Pipe hanger for rigid pipe
Flexible hose
49
1
37
2
5
10
6
2
3
8
English (GB)
Make sure that the pump is not stressed by the
piping 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.
1. Turn the union nuts by hand to loosen the inlet and outlet
ports. See fig. 3.
2. Seal the pipe fittings with thread sealing tape.
3. Carefully screw the inlet and outlet connections to the pipe
fittings using a pipe wrench or 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. Hold the
connection with one hand and tighten the union nut with the
other hand.
TM06 4321 1915TM06 4347 2015
Fig. 4 How to reduce noise in the installation
3.3.5 Installation examples
Fittings, hoses and valves are not supplied with the pump.
We recommend to follow the installation examples in sections
3.3.6 to 3.3.8.
3.3.6 Mains water pressure boosting
Fig. 3 How to fit the connections
Pos. Description
1 Inlet and outlet port
2 Union nut
3 Pipe fitting
3.3.4 How to reduce noise in the installation
We recommend to use flexible hoses and mount the
pump on a vibration-damping rubber pad.
Vibrations from the pump may be transferred to the surrounding
structure and create noise in the 20-1000 Hz spectrum, also
called the bass spectrum.
Correct installation using a vibration-damping rubber pad, flexible
hoses and correctly placed pipe hangers for rigid pipes can
reduce the noise experienced by up to 50 %. See fig. 4.
Place pipe hangers for the rigid pipes close to the connection of
the flexible hose.
TM06 4318 1915
Fig. 5 Mains water pressure boosting
Pos. Description
1 Highest tapping point
2 Pipe hangers and supports
3 Isolating valves
4 Flexible hoses
5 Bypass valve
Optional pressure-reducing valve on the inlet side if the
6
inlet pressure can exceed 10 bar (145 psi)
Optional pressure-relief valve on the outlet side if the
7
installation cannot withstand a pressure of 6 bar (87 psi)
Drip tray. Install the pump on a small stand to prevent
8
the ventilation holes from being flooded.
9 Pressure gauge
10 Mains water pipe
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3.3.7 Suction from a well
H2 H1
6
5
4
2
3
1
A
1
2
3
4
6
7
8
5
H
L
Fig. 6 Suction from a well
Pos. Description
1 Highest tapping point
2 Isolating valve
3 Flexible hoses
4 Pipe support
Inlet filter.
If the water may contain sand, gravel or other debris,
5
please install a filter on the inlet side to protect the pump
and installation.
6 Foot valve with strainer (recommended).
H1 Maximum suction lift is 8 m (26 ft).
H2 Inlet pipe must be submersed at least 0.5 m (1.64 ft).
3.3.8 Suction from freshwater tank
Pos. Description
8 Foot valve with strainer (recommended)
A Minimum 1 ° inclination
3.3.9 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.
TM06 4349 4117
Fig. 8 Inlet pipe length
DN 32 DN 40
H
[m (ft)]
L
[m (ft)]
H
[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)
Preconditions:
Maximum flow velocity: 1 l/s (16 gpm).
Inside roughness of pipes: 0.01 mm (0.0004 inch).
English (GB)
TM06 4372 4117
L
[m (ft)]
Inside pipe diameter
Size
[mm (inches)]
Pressure loss
[m/m (psi/ft)]
DN 32 28 (1.1) 0.117 (5/100)
DN 40 35.2 (1.4) 0.0387 (1.6/100)
TM06 4348 4117
Fig. 7 Suction from freshwater tank
Pos. Description
1 Highest tapping point
2 Pipe hangers
3 Isolating valve
4 Flexible hoses
5 Drain to sewer
Inlet filter.
If the water may contain sand, gravel or other debris,
6
please install a filter on the inlet side to protect the pump
and installation.
7 Freshwater tank
5
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3.4 Electrical connection
English (GB)
Carry out the electrical connection according to local
regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
4. Starting up the product
Do not start the pump until it has been filled with
liquid.
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
- The pump must be earthed.
- The pump is supplied with a grounding conductor
and grounding-type attachment plug. To reduce
the risk of electric shock, be certain that the pump
is connected only to a properly grounded,
grounding type receptacle (protective earthing).
- If national legislation requires a Residual Current
Device (RCD), a Ground Fault Circuit Interrupter
(GFCI), or equivalent in the electrical installation,
this must be type B (according to UL/IEC
61800-5-1) or better, due to the nature of the
constant DC leakage current.
If the power supply cable is damaged, it must be
replaced by the manufacturer, his service agent or
similarly qualified persons in order to avoid hazard.
We recommend that you fit the permanent
installation with a residual-current circuit breaker
(RCCB) with a tripping current less than 30 mA.
4.1 Priming the pump
1. Unscrew the priming plug and pour minimum 1.7 litres (0.45
gallons) of water into the pump housing. See fig. 9.
2. Screw the priming plug on again.
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.
4.2 Starting the pump
1. Open a tap to prepare the pump for venting.
2. Insert the power plug into the socket or turn on the power
supply and the pump will start.
3. When water flows without air, close the tap.
4. Open the highest tapping point in the installation, preferably a
shower.
5. Adjust the pressure setpoint to the required pressure by
means of the buttons. See section 4.3 How to set the
correct pressure.
6. Close the tapping point.
Startup has been completed.
3.4.1 Motor protection
The pump incorporates current and temperature dependent
motor protection.
3.4.2 Plug connection
DANGER
Electric shock
Death or serious personal injury
- Check that the power plug delivered with the
product is in compliance with local regulations.
- Make sure that the pump is connected only to a
properly grounded, grounding-type receptacle
(protective earthing).
- The protective earth of the power outlet must be
connected to the protective earth of the pump. The
plug must therefore have the same PE connection
system as the power outlet. If not, use a suitable
adapter.
3.4.3 Connection without plug
The electrical connection must be carried out by an
authorised electrician in accordance with local
regulations.
DANGER
Electric shock
Death or serious personal injury
- The pump must be connected to an external main
switch with a minimum contact gap of 3 mm (0.12
inch) in all poles.
TM06 4204 1615
Fig. 9 Priming the pump
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4.3 How to set the correct pressure
1
5
6
7
8
2
3
4
9
The pump can be set to provide a water pressure between 1.5 to
5.5 bar (22 to 80 psi) at intervals of 0.5 bar (7 psi).
The factory setting is 3 bar (44 psi). See section 3.2 System
sizing.
We recommend to use the default pressure of 3.0 bar
(44 psi) which will suit most applications.
The difference between the inlet pressure and outlet
pressure must not exceed 3.5 bar (51 psi).
Example: If the inlet pressure is 0.5 bar (7 psi), the
maximum outlet pressure is 4 bar (58 psi).
If you set the pressure too high, this might cause the
pump to operate for up to three minutes after the tap
is turned off.
4.3.1 Boosting from a well or a tank
If you are boosting from a well or a tank, make sure not to set the
pressure setpoint too high. The difference between the inlet
pressure and outlet pressure must not exceed 3.5 bar (51 psi).
4.4 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.
When the pump is started up 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.
Under normal conditions, the leaking liquid will evaporate. As a
result, no leakage will be detected.
The leakage is visible where the screws are mounted on the base
plate. If the unlikely event of an internal leakage occurs, the liquid
will be drained through the bottom of the pump. Install the pump
in such a way that no undesirable collateral damage can arise.
5. Handling and storing the product
5.1 Handling the product
Take care not to drop the pump as it may break.
English (GB)
Maximum setpoint [bar (psi)]
Well application 3.0 (44)
Tank below ground level 3.5 (51)
Tank above ground level 4.0 (58)
TM07 0075 4117
Fig. 10 Boosting from a well or a tank
4.3.2 Boosting from the mains
The pressure settings 4.5, 5.0 and 5.5 bar (65, 73 and 80 psi)
require a positive inlet pressure and these settings must only be
used when boosting from the water mains.
Fig. 11 Boosting from the mains
4.3.3 Self-learning setpoint
If the pump cannot reach the user-defined pressure setpoint, the
self-learning function will automatically lower the setpoint. See
section 8.3.2 Self-learning function.
5.2 Storing the product
If the pump is to be stored for a period of time, for example during
the winter, drain it and store it indoors in a dry location. See
section 10. Starting up the product after standstill.
Temperature range during storing must be -40 to 70 °C (-40 to
158 °F).
Maximum relative humidity during storing: 95 % RH.
6. Product introduction
6.1 Product description
TM07 0076 4117
Fig. 12 Grundfos SCALA2 pump
Pos. Description
1 Air valve for built-in pressure tank
2 Operating panel. See section 7. Control functions.
TM07 0074 4117
3 Nameplate. See section 6.4.1 Nameplate.
Plug for access to pump shaft. See section
4
10.1 Deblocking the pump.
5 Priming plug. See section 4.1 Priming the pump.
Outlet opening. See section 3.3.3 Connecting the piping
6
system.
Inlet opening. See section 3.3.3 Connecting the piping
7
system.
8 Drain plug. See section 6.4 Identification.
9 Ventilation holes. They must not be flooded.
The inlet and outlet openings include flexible connections of ± 5 °.
TM06 3818 1015
7
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6.2 Intended use
DK-8850 Bjerringbro, Denmark
SCALA2 3-45 AKCHDE
Model A
200-240V 50/60Hz
Made in Serbia
P/N 99999999
S/N
P/C 1519
H
max
Hmin
Hnom
Qnom
45 m
16 m
27 m
3
m /h
3
45
C/
55
C
Tamb.max
IPX4D
I(A)
Min.
Max.
P1(W)
0.01
2.8 550
2
T
liq.max/Psyst.max:
1MPa
NRP XXX-XXX-XXXXXX
PCS XXXXX.XX.XX 04-6292.2.41-2003
LSPr-022-IDN
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
12
English (GB)
This pump has been evaluated for use with water
only.
Only use SCALA2 pumps according to the
specifications stated in these installation and
operating instructions.
The pump is suitable for pressure boosting of fresh water in
domestic water supply systems.
6.3 Pumped liquids
The pump is designed for fresh water with a maximum chloride
content of 300 ppm and a free chlorine content below 1 ppm.
The pump is not suitable for these liquids:
• liquids containing long fibres
• flammable liquids (oil, petrol, etc.)
• aggressive liquids.
If the water can contain sand, gravel or other debris,
there is a risk of pump blockage.
Please install a filter on the inlet side or apply a
floating strainer to protect the pump.
6.4 Identification
6.4.1 Nameplate
6.4.2 Type key
SCALA2 3 -45 A K C H D E
Type range
SCALA2
Rated flow rate
3
/h]
3: [m
Maximum head
45: [m]
Material code
A: Standard
Supply voltage
K: 1 x 200-240 V, 50/60 Hz
M: 1 x 208-230 V, 60 Hz
V: 1 x 115 V, 60 Hz
W: 1 x 100-115 V, 50/60 Hz
Motor
C: High-efficiency motor with frequency converter
Mains cable and plug
A: Cable with plug, IEC type I, AS/NZS3112, 2 m
B: Cable with plug, IEC type B, NEMA 5-15P, 6 ft
C: Cable with plug, IEC type E&F, CEE7/7, 2 m
D: Cable without plug, 2 m
G: Cable with plug, IEC type G, BS1363, 2 m
H: Cable with plug, IEC type I, IRAM 2073, 2 m
J: Cable with plug, NEMA 6-15P, 6 ft
K: Cable with plug, IEC type B, JIS C 8302, 2 m
L: Cable with plug, IEC type L, CEI 23-16/VII, 2 m
O: Cable with plug, IEC type O, TIS 166-2549, 2 m
Controller
D: Integrated frequency converter
Thread
E: R 1" composite material
F: NPT 1" composite material
Fig. 13 Example of nameplate
Pos. Description
1 Type designation
2 Product number
3 Serial number
4 Production code, year and week
5 Maximum head
6 Minimum head
7 Rated head
8 Rated flow rate
9 Maximum ambient temperature
10 Enclosure class
11 Maximum operation pressure
12 Maximum liquid temperature
13 Minimum and maximum rated power
14 Model
15 Voltage and frequency
16 Approvals
17 Minimum and maximum rated current
8
TM06 4340 2015
Page 9
7. Control functions
BAR PSI Water colum kPa MPa
[m]
5.5 80 55 550 0.55
5.0 73 50 500 0.50
4.5 65 45 450 0. 45
4.0 58 40 400 0. 40
3.5 51 35 350 0.35
3.0 44 30 300 0.30
2.5 36 25 250 0.25
2.0 30 20 200 0.20
1.5 22 15 150 0.15
}
}
}
}
7.1 Menu overview, SCALA2
English (GB)
TM06 4187 4117
Fig. 16 Pressure indication table
7.1.2 Indicator lights for SCALA2
Indications Description
Operating indications
Fig. 14 SCALA2 operating panel
SCALA2 Function
On/off
Increases the outlet pressure.
Decreases the outlet pressure.
Resets alarms.
Indicates the required outlet pressure.
Indicates that the pump has been stopped manually.
Indicates that the operating panel is locked.
7.1.1 Pressure indicator, SCALA2
The pressure indicator shows the required outlet pressure from
1.5 to 5.5 bars (22 to 80 psi) in 0.5 bar (7.5 psi) intervals.
The illustration below shows a pump set to 3 bar (44 psi)
indicated by two green lights, and a pump set to 3.5 bar (51 psi)
indicated by one green light.
Flashing green lights indicate that the pump has automatically
lowered the pressure. See section 4.3.3 Self-learning setpoint.
TM06 3301 5114
The operating panel is locked.
Power supply failure
The pump is blocked, for instance the shaft seal
has seized up.
Leakage in the system
Dry running or water shortage*
The maximum pressure has been exceeded or
the setpoint cannot be reached.
The maximum runtime has been exceeded.
The temperature is outside the range.
Fig. 15 SCALA2 outlet pressure indication
* For fault number 4, dry running, the pump must be reset
manually.
For fault number 4, water shortage, and the remaining faults,
1, 2, 3, 5, 6 and 7, the pump will reset whenever the cause has
disappeared or been remedied. See section 8.3.3 Auto reset.
For further information about system status, see section 12. Fault
finding the product.
TM06 4345 2015
9
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8. Setting the product
Auto reset
Anti cycling
Maximum continuous
operating time
Exit expert menu
Self-learning
English (GB)
The pump will remember the controller settings even if it is turned
off.
8.1 Setting the outlet pressure
Adjust the outlet pressure by pressing .
8.2 Locking and unlocking the operating panel
The operating panel can be locked, which means that the buttons
do not function and no settings can be changed accidentally.
How to lock the operating panel
1. Hold down the buttons simultaneously for 3 seconds.
2. The operating panel is locked when symbol lights up.
How to unlock the operating panel
1. Hold down the buttons simultaneously for 3 seconds.
2. The operating panel is unlocked when symbol turns off.
8.3 Expert settings, SCALA2
Expert settings are for installers only.
The expert setting menu allows the installer to toggle between the
following functions:
• self-learning
• auto reset
• anti cycling
• maximum continuous operating time.
8.3.1 Accessing the expert settings
Proceed as follows:
1. Hold down the button for 5 seconds.
2. The symbol will start flashing to indicate that the expert
settings are active.
The pressure indicator now acts as the expert menu. A flashing
green diode is the cursor. Move the cursor using the
buttons, and toggle the selection on or off using the button.
The diode for each setting will light up when the setting is active.
Move cursor up.
Move cursor down.
Toggle settings.
8.3.2 Self-learning function
The factory setting for this function is "on".
On
If the pump cannot reach the user-defined pressure setpoint, the
self-learning function will automatically adjust the setpoint.
The pump will lower the setpoint to either 4.5, 3.5 or 2.5 bar (65,
51 or 36 psi).
The self-learned setpoint is indicated on the operating panel by
one flashing green light.
After every 24 hours, the pump will automatically attempt to revert
to the original user-defined setpoint. If this is not possible, the
pump will again return to the self-learned setpoint. The pump will
continue to operate with the self-learning setpoint, until the
user-defined setpoint can be reached.
Example:
The user-defined pressure is set to 5 bar (72 psi), indicated by
constant green lights on the pressure indicator panel.
The pump is unable to reach this pressure due to negative
pressure on the inlet side.
The self-learning function automatically adjusts the setpoint to 3.5
bar (51 psi), indicated by one flashing green light on the pressure
indicator panel.
After 24 hours, the pump will automatically try to adjust the
setpoint back to 5 bar (72 psi).
TM07 0078 4117
Fig. 18 User-defined setpoint (left) and self-learned setpoint
(right)
How to reset the self-learned setpoint
1. You can manually reset the settings by pressing any button on
the operating panel. The pump will immediately try to reach
the original setpoint.
2. If the pump keeps reducing the setpoint due to self-learning,
we recommend to reduce the setpoint manually on the
operating panel.
Off
If you set the self-learning function to off and the pump is unable
to reach the desired setpoint, the pump will show alarm 5.
TM07 0079 4117
Fig. 17 Expert menu overview
10
TM06 4346 4117
Page 11
8.3.3 Auto reset
1
5
6
7
8
2
3
4
9
The factory setting for this function is "on".
On
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 auto reset function works in the following way:
Indication Action
The pump will attempt eight restarts at
Water shortage
Dry running (pump
not primed)
All other indications
For indications, see section 7.1.2 Indicator lights for SCALA2.
Off
All alarms must be reset manually by means of the button.
8.3.4 Anti cycling
The factory setting for this function is "off".
This function monitors the starts and stops of the pump.
Off
If the pump starts 40 times in a fixed pattern, there will be an
alarm. The pump will remain in operation as normal.
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 alarm 3.
five-minute intervals. If not successful,
this cycle will be repeated after 24 hours.
Prime the pump and reset it manually.
The pump will attempt three restarts
within the first 60 seconds, then eight
restart attempts at five-minute intervals. If
not successful, this cycle will be repeated
after 24 hours.
9. Servicing the product
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
9.1 Maintaining the product
9.1.1 Insect filter
The pump has an insect filter to prevent insects from nesting in
the pump.
The filter is placed on the bottom and can easily be removed and
cleaned with a stiff brush. See fig. 19.
Clean the insect filter once a year or as needed.
Fig. 19 Insect filter
9.1.2 Inlet and outlet valves
The pump is maintenance-free, but we recommend that you
check and clean the inlet and outlet non-return valves once a
year or as needed.
English (GB)
TM06 4537 2515TM06 3818 1015
Leakage in the system.
8.3.5 Maximum continuous operating time
The factory setting for this function is "off".
This function is a timer that can turn off the pump if it runs
continuously for 30 minutes.
Off
If the pump exceeds the running time of 30 minutes, the pump will
run depending on the flow.
On
If the pump exceeds the running time of 30 minutes, the pump will
stop after 30 minutes of continuous operation, and it will show
alarm 6. This alarm will always need to be reset manually.
Maximum runtime exceeded.
8.4 Resetting to factory settings
The pump can be reset to factory setting by pressing the
buttons simultaneously for 5 seconds.
Fig. 20 SCALA2 pump
To remove the inlet non-return valve, follow the steps below:
1. Turn off the power supply and disconnect the power plug.
2. Shut off the water source.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually open and remove the priming plug. See fig. 20 (5).
6. Remove the drain plug and drain the pump. See fig. 20 (8).
7. Unscrew the union nut holding the inlet connection. See fig.
20 (7). Depending on the installation type, it may be
necessary to remove the pipes from both the inlet and outlet
connections.
8. Pull out the inlet connection.
9. Pull out the inlet non-return valve.
10. Clean the non-return valve with warm water and a soft brush.
11. Assemble the components in reverse order.
11
Page 12
To remove the outlet non-return valve, follow the steps
Outlet non-return valve
Inlet non-return
valve
English (GB)
below:
1. Turn off the power supply and disconnect the power plug.
2. Shut off the water source.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually open and remove the priming plug. See fig. 20 (5).
The plug and non-return valve are one unit.
6. Clean the non-return valve with warm water and a soft brush.
7. Assemble the components in reverse order.
Fig. 21 Outlet and inlet non-return valves
9.2 Customer service information
For further information on service parts, see Grundfos Product
Center on www.product-selection.grundfos.com.
9.3 Service kits
For further information on service kits, see Grundfos Product
Center on www.grundfos.com.
10. Starting up the product after standstill
1. Check that the pump is not blocked by following the
instructions in section 10.1 Deblocking the pump.
2. If the pump has been drained, it must be filled with liquid
before startup. See section 4.1 Priming the pump.
3. Start up the pump. Follow the instructions in section
4. Starting up the product.
4. The pump will remember the controller settings even if it is
turned off.
10.1 Deblocking the pump
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.
The end cover incorporates a plug which can be removed by
means of a suitable tool. This makes it possible to deblock the
pump shaft if it has seized up as a result of inactivity.
Fig. 22 Deblocking the pump
11. Taking the product out of operation
If the pump is taken out of operation for a period of time, for
example during the winter, it must be disconnected from the
power supply and placed in a dry location.
TM06 4331 1915
Proceed as follows:
1. Stop the pump by means of the on/off button .
2. Disconnect the power supply.
3. Open a tap to release the pressure in the pipe system.
4. Close the isolating valves and/or drain the pipes.
5. Gradually loosen the priming plug to release the pressure in
the pump.
6. Remove the drain plug to drain the pump. See fig. 23.
7. We recommend to store the pump indoors in a dry location.
Due to humidity, the disconnected pump must not be left
outside for a longer period of time.
TM06 4202 1615TM06 4203 1615
12
Fig. 23 Draining the pump
Page 13
12. Fault finding the product
12.1 Grundfos Eye operating indications
Grundfos Eye Indication Description
No lights are on.
Two opposite green indicator lights running in the
direction of rotation of the pump.
Two opposite green indicator lights at a 45 ° angle is the
icon used throughout this document for pump running.
Two opposite green indicator lights permanently on.
Two opposite red indicator lights flashing
simultaneously.
Two opposite red indicator lights is the icon used
throughout this document for pump stopped.
12.2 Fault resetting
You can reset a fault indication in one of the following ways:
• When you have eliminated the fault cause, reset the pump
manually by pressing the button. The pump will then revert
to normal duty.
• If the fault disappears by itself, the pump will attempt to reset
automatically and the fault indication will disappear if
automatic reset is successful and provided that you have
enabled the auto reset function in the service menu.
The power is off.
The pump is not running.
The power is on.
The pump is running.
The power is on.
The pump is running.
The power is on.
The pump is not running.
Alarm.
The pump has stopped.
Alarm.
The pump has stopped.
English (GB)
13
Page 14
12.3 Fault finding chart
English (GB)
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
Fault
1. The pump is not
running.
2. The pump is
running.
Cause Remedy
Grundfos Eye
Indicator light
--
Automatic reset
a) Power supply failure. Switch on the power supply.
b) The power supply is out of
Yes
c) The shaft seal has seized up. See section 10. Starting up the product
No
d) The pump is blocked by
No
e) Dry running.
Yes
f) The maximum runtime has been
No
g) The internal non-return valve is
No
a) Leakage from the pipe system, or
-
b) Small continuous consumption. Check the taps and reconsider the
-
c) The temperature of the pump and
-
prescribed voltage range.
impurities.
exceeded.
defective or blocked in completely
or partly open position.
the non-return valve is not
properly closed due to impurities.
water is below 3 °C.
Check the cables and cable connections
for defects and loose connections and
check for blown fuses in the electrical
installation.
Check the power supply and the pump
nameplate. Reestablish the power
supply within the prescribed voltage
range.
after standstill.
See section 10. Starting up the product
after standstill.
Contact Grundfos Service if the problem
persists.
Check the water source, and prime the
pump.
Check the installation for leakage and
reset the alarm.
Clean, repair or replace the non-return
valve. See section 9. Servicing the
product.
Check and repair the pipe system, or
clean, repair or replace the non-return
valve.
usage pattern (ice machines, water
evaporators for air-conditioning, etc.).
Consider protecting the pump and the
installation against frost.
3. The pump
performance is
insufficient.
14
--
a) The pump inlet pressure is too
b) The pump is undersized.
-
c) The inlet pipe, the inlet strainer or
--
d) There is a leakage in the inlet
--
e) There is air in the inlet pipe or the
--
f) The required outlet pressure is
--
g) The maximum temperature has
Yes
low.
the pump is partly blocked by
impurities.
pipe.
pump.
too low for the installation.
been exceeded and the pump is
running at reduced performance.
Check the inlet conditions of the pump.
Replace the pump with a bigger pump.
Clean the inlet pipe or the pump.
Repair the inlet pipe.
Prime the inlet pipe and the pump.
Check the inlet conditions of the pump.
Increase the pressure setting (arrow up).
Check the cooling conditions. Protect
the pump against direct sunlight or any
nearby heat sources.
Page 15
Fault
Cause Remedy
4. System
overpressure.
5. You can reset the
pump, but it runs
only for a few
seconds.
Grundfos Eye
Indicator light
Automatic reset
a) The setpoint is set too high. The
difference between the outlet
Yes
Yes
Yes
Yes
Yes
Yes
Yes
pressure and the inlet pressure
must not exceed 3.5 bar (51 psi).
b) The maximum pressure has been
exceeded, the inlet pressure is
higher than 6 bar, 0.6 MPa (87
psi).
c) The maximum pressure has been
exceeded. Equipment elsewhere
in the system causes a high
pressure at the pump, for
example water heater or defective
safety equipment.
a) Dry running or water shortage.
b) The inlet pipe is blocked by
impurities.
c) The foot or non-return valve is
blocked in closed position.
d) There is a leakage in the inlet
pipe.
Reduce the pressure to a new setpoint
(maximum 3.5 bar (51 psi) + positive
inlet pressure).
Example: If the inlet pressure is 0.5 bar
(7 psi), the maximum outlet pressure is 4
bar (58 psi).
Check the inlet conditions.
Check the installation.
Check the water source, and prime the
pump.
Clean the inlet pipe.
Clean, repair or replace the foot or
non-return valve.
Repair the inlet pipe.
English (GB)
6. You can reset the
pump, but it starts
repeatedly,
immediately after
stopping.
e) Air in the inlet pipe or the pump.
Yes
a) The internal non-return valve is
No
No
defective or blocked in completely
or partly open position.
b) The tank precharge pressure is
not correct.
Prime the inlet pipe and the pump.
Check the inlet conditions of the pump.
Clean, repair or replace the non-return
valve.
Adjust the tank precharge pressure to 70
% of the required outlet pressure.
15
Page 16
13. Technical data
English (GB)
13.1 Operating conditions
Temperature [°C (°F)]
Maximum ambient temperature:
1 x 208-230 V, 60 Hz: 45 (113)
1 x 115 V, 60 Hz: 45 (113)
1 x 200-240 V, 50/60 Hz: 55 (131)
Maximum liquid temperature: 45 (113)
Pressure [bar (psi)]
Maximum system pressure: 10 (145)
Maximum inlet pressure: 6 (87)
Other operating data
Maximum head: 45 m (147 ft)
IP rating: X4D (outdoor installation)
Pumped liquid: Clean water
Noise level: < 47 dB(A)*
* 47 dB(A) is measured in a typical application with pressure
control mode (2.5 bar (36 psi) and 1 m
applications noise might increase up to 58 dB.
3
/h). In non-typical
13.2 Mechanical data
Pipe connections are R 1" or NPT 1".
13.3 Electrical data
Type
SCALA2 1 x 200-240 50/60 2.3 - 2.8 550
SCALA2 1 x 208-230 60 2.3 - 2.8 550 2
SCALA2 1 x 115 60 5 - 5.7 560 2
Supply
voltage [V]
Frequency
[Hz]
I
max.
[A]P1[W]
Stand-by
power
[W]
2
2
2
2
13.4 Dimensions and weights
Weight
L1
[mm]
[inch]
403
15.9
[kg]
[lbs]
10
22
Type
SCALA2
H1
[mm]
[inch]
302
11. 9
H2
[mm]
[inch]
234
9.2
H3
[mm]
[inch]
114
4.5
W1
[mm]
[inch]
193
7.6
14. Disposing of the product
This product has been designed with focus on the disposal and
recycling of materials. The following disposal values apply to all
variants of Grundfos SCALA2 pumps:
• minimum 85 % for recycling
• maximum 10 % for incineration
• maximum 5 % for depositing.
Values are percent of total weight.
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company
or service workshop.
See also end-of-life information on
www.grundfos.com/product-recycling.
TM06 3305 5114
Type
SCALA2 1 x 200-240 50/60
SCALA2 1 x 208-230 60 NEMA 6-15P
SCALA2 1 x 115 60 IEC, type B, NEMA 5-15P
Supply
voltage [V]
Frequency
[Hz]
Plug
IEC, type E&F
IEC, type I
IEC, type G
None
16
Page 17
Argentina
Bombas GRUNDFOS de Argentina S.A.
Ruta Panamericana km. 37.500 Centro
Industrial Garin
1619 Garín Pcia. de B.A.
Phone: +54-3327 414 444
Telefax: +54-3327 45 3190
Australia
GRUNDFOS Pumps Pty. Ltd.
P.O. Box 2040
Regency Park
South Australia 5942
Phone: +61-8-8461-4611
Telefax: +61-8-8340 0155
Austria
GRUNDFOS Pumpen Vertrieb Ges.m.b.H.
Grundfosstraße 2
A-5082 Grödig/Salzburg
Tel.: +43-6246-883-0
Telefax: +43-6246-883-30
Belgium
N.V. GRUNDFOS Bellux S.A.
Boomsesteenweg 81-83
B-2630 Aartselaar
Tél.: +32-3-870 7300
Télécopie: +32-3-870 7301
Belarus
Представительство ГРУНДФОС в
Минске
220125, Минск
ул. Шафарнянская, 11, оф. 56, БЦ
«Порт»
Тел.: +7 (375 17) 286 39 72/73
Факс: +7 (375 17) 286 39 71
E-mail: minsk@grundfos.com
Bosnia and Herzegovina
GRUNDFOS Sarajevo
Zmaja od Bosne 7-7A,
BH-71000 Sarajevo
Phone: +387 33 592 480
Telefax: +387 33 590 465
www.ba.grundfos.com
e-mail: grundfos@bih.net.ba
Brazil
BOMBAS GRUNDFOS DO BRASIL
Av. Humberto de Alencar Castelo Branco,
630
CEP 09850 - 300
São Bernardo do Campo - SP
Phone: +55-11 4393 5533
Telefax: +55-11 4343 5015
Bulgaria
Grundfos Bulgaria EOOD
Slatina District
Iztochna Tangenta street no. 100
BG - 1592 Sofia
Tel. +359 2 49 22 200
Fax. +359 2 49 22 201
email: bulgaria@grundfos.bg
Canada
GRUNDFOS Canada Inc.
2941 Brighton Road
Oakville, Ontario
L6H 6C9
Phone: +1-905 829 9533
Telefax: +1-905 829 9512
China
GRUNDFOS Pumps (Shanghai) Co. Ltd.
10F The Hub, No. 33 Suhong Road
Minhang District
Shanghai 201106
PRC
Phone: +86 21 612 252 22
Telefax: +86 21 612 253 33
COLOMBIA
GRUNDFOS Colombia S.A.S.
Km 1.5 vía Siberia-Cota Conj. Potrero
Chico,
Parque Empresarial Arcos de Cota Bod.
1A.
Cota, Cundinamarca
Phone: +57(1)-2913444
Telefax: +57(1)-8764586
Croatia
GRUNDFOS CROATIA d.o.o.
Buzinski prilaz 38, Buzin
HR-10010 Zagreb
Phone: +385 1 6595 400
Telefax: +385 1 6595 499
www.hr.grundfos.com
GRUNDFOS Sales Czechia and
Slovakia s.r.o.
Čajkovského 21
779 00 Olomouc
Phone: +420-585-716 111
Denmark
GRUNDFOS DK A/S
Martin Bachs Vej 3
DK-8850 Bjerringbro
Tlf.: +45-87 50 50 50
Telefax: +45-87 50 51 51
E-mail: info_GDK@grundfos.com
www.grundfos.com/DK
Estonia
GRUNDFOS Pumps Eesti OÜ
Peterburi tee 92G
11415 Tallinn
Tel: + 372 606 1690
Fax: + 372 606 1691
Finland
OY GRUNDFOS Pumput AB
Trukkikuja 1
FI-01360 Vantaa
Phone: +358-(0) 207 889 500
France
Pompes GRUNDFOS Distribution S.A.
Parc d’Activités de Chesnes
57, rue de Malacombe
F-38290 St. Quentin Fallavier (Lyon)
Tél.: +33-4 74 82 15 15
Télécopie: +33-4 74 94 10 51
Germany
GRUNDFOS GMBH
Schlüterstr. 33
40699 Erkrath
Tel.: +49-(0) 211 929 69-0
Telefax: +49-(0) 211 929 69-3799
e-mail: infoservice@grundfos.de
Service in Deutschland:
e-mail: kundendienst@grundfos.de
Greece
GRUNDFOS Hellas A.E.B.E.
20th km. Athinon-Markopoulou Av.
P.O . B o x 71
GR-19002 Peania
Phone: +0030-210-66 83 400
Telefax: +0030-210-66 46 273
Hong Kong
GRUNDFOS Pumps (Hong Kong) Ltd.
Unit 1, Ground floor
Siu Wai Industrial Centre
29-33 Wing Hong Street &
68 King Lam Street, Cheung Sha Wan
Kowloon
Phone: +852-27861706 / 27861741
Telefax: +852-27858664
Hungary
GRUNDFOS Hungária Kft.
Park u. 8
H-2045 Törökbálint,
Phone: +36-23 511 110
Telefax: +36-23 511 111
India
GRUNDFOS Pumps India Private Limited
118 Old Mahabalipuram Road
Thoraipakkam
Chennai 600 096
Phone: +91-44 2496 6800
Indonesia
PT. GRUNDFOS POMPA
Graha Intirub Lt. 2 & 3
Jln. Cililitan Besar No.454. Makasar,
Jakarta Timur
ID-Jakarta 13650
Phone: +62 21-469-51900
Telefax: +62 21-460 6910 / 460 6901
Ireland
GRUNDFOS (Ireland) Ltd.
Unit A, Merrywell Business Park
Ballymount Road Lower
Dublin 12
Phone: +353-1-4089 800
Telefax: +353-1-4089 830
Italy
GRUNDFOS Pompe Italia S.r.l.
Via Gran Sasso 4
I-20060 Truccazzano (Milano)
Tel.: +39-02-95838112
Telefax: +39-02-95309290 / 95838461
Japan
GRUNDFOS Pumps K.K.
1-2-3, Shin-Miyakoda, Kita-ku,
Hamamatsu
431-2103 Japan
Phone: +81 53 428 4760
Telefax: +81 53 428 5005
Korea
GRUNDFOS Pumps Korea Ltd.
6th Floor, Aju Building 679-5
Yeoksam-dong, Kangnam-ku, 135-916
Seoul, Korea
Phone: +82-2-5317 600
Telefax: +82-2-5633 725
Latvia
SIA GRUNDFOS Pumps Latvia
Deglava biznesa centrs
Augusta Deglava ielā 60, LV-1035, Rīga,
Tālr.: + 371 714 9640, 7 149 641
Fakss: + 371 914 9646
Lithuania
GRUNDFOS Pumps UAB
Smolensko g. 6
LT-03201 Vilnius
Tel: + 370 52 395 430
Fax: + 370 52 395 431
Malaysia
GRUNDFOS Pumps Sdn. Bhd.
7 Jalan Peguam U1/25
Glenmarie Industrial Park
40150 Shah Alam
Selangor
Phone: +60-3-5569 2922
Telefax: +60-3-5569 2866
Mexico
Bombas GRUNDFOS de México S.A. de
C.V.
Boulevard TLC No. 15
Parque Industrial Stiva Aeropuerto
Apodaca, N.L. 66600
Phone: +52-81-8144 4000
Telefax: +52-81-8144 4010
Netherlands
GRUNDFOS Netherlands
Velu we zo om 35
1326 AE Almere
Postbus 22015
1302 CA ALMERE
Tel.: +31-88-478 6336
Telefax: +31-88-478 6332
E-mail: info_gnl@grundfos.com
New Zealand
GRUNDFOS Pumps NZ Ltd.
17 Beatrice Tinsley Crescent
North Harbour Industrial Estate
Albany, Auckland
Phone: +64-9-415 3240
Telefax: +64-9-415 3250
Norway
GRUNDFOS Pumper A/S
Strømsveien 344
Postboks 235, Leirdal
N-1011 Oslo
Tlf.: +47-22 90 47 00
Telefax: +47-22 32 21 50
Poland
GRUNDFOS Pompy Sp. z o.o.
ul. Klonowa 23
Baranowo k. Poznania
PL-62-081 Przeźmierowo
Tel: (+48-61) 650 13 00
Fax: (+48-61) 650 13 50
Portugal
Bombas GRUNDFOS Portugal, S.A.
Rua Calvet de Magalhães, 241
Apartado 1079
P-2770-153 Paço de Arcos
Tel.: +351-21-440 76 00
Telefax: +351-21-440 76 90
Romania
GRUNDFOS Pompe România SRL
Bd. Biruintei, nr 103
Pantelimon county Ilfov
Phone: +40 21 200 4100
Telefax: +40 21 200 4101
E-mail: romania@grundfos.ro
Russia
ООО Грундф ос Россия
ул. Школьная, 39-41
Москва, RU-109544, Russia
Тел. (+7) 495 564-88-00 (495) 737-30-00
Факс (+7) 495 564 8811
E-mail grundfos.moscow@grundfos.com
Serbia
Grundfos Srbija d.o.o.
Omladinskih brigada 90b
11070 Novi Beograd
Phone: +381 11 2258 740
Telefax: +381 11 2281 769
www.rs.grundfos.com
Singapore
GRUNDFOS (Singapore) Pte. Ltd.
25 Jalan Tukang
Singapore 619264
Phone: +65-6681 9688
Telefax: +65-6681 9689
Slovakia
GRUNDFOS s.r.o.
Prievozská 4D
821 09 BRATISLAVA
Phona: +421 2 5020 1426
sk.grundfos.com
Slovenia
GRUNDFOS LJUBLJANA, d.o.o.
Leskoškova 9e, 1122 Ljubljana
Phone: +386 (0) 1 568 06 10
Telefax: +386 (0)1 568 06 19
E-mail: tehnika-si@grundfos.com
South Africa
GRUNDFOS (PTY) LTD
Corner Mountjoy and George Allen Roads
Wilbart Ext. 2
Bedfordview 2008
Phone: (+27) 11 579 4800
Fax: (+27) 11 455 6066
E-mail: lsmart@grundfos.com
Spain
Bombas GRUNDFOS España S.A.
Camino de la Fuentecilla, s/n
E-28110 Algete (Madrid)
Tel.: +34-91-848 8800
Telefax: +34-91-628 0465
Sweden
GRUNDFOS AB
Box 333 (Lunnagårdsgatan 6)
431 24 Mölndal
Tel.: +46 31 332 23 000
Telefax: +46 31 331 94 60
Switzerland
GRUNDFOS Pumpen AG
Bruggacherstrasse 10
CH-8117 Fällanden/ZH
Tel.: +41-44-806 8111
Telefax: +41-44-806 8115
Taiwan
GRUNDFOS Pumps (Taiwan) Ltd.
7 Floor, 219 Min-Chuan Road
Taichung, Taiwan, R.O.C.
Phone: +886-4-2305 0868
Telefax: +886-4-2305 0878
Thailand
GRUNDFOS (Thailand) Ltd.
92 Chaloem Phrakiat Rama 9 Road,
Dokmai, Pravej, Bangkok 10250
Phone: +66-2-725 8999
Telefax: +66-2-725 8998
Turkey
GRUNDFOS POMPA San. ve Tic. Ltd. Sti.
Gebze Organize Sanayi Bölgesi
Ihsan dede Caddesi,
2. yol 200. Sokak No. 204
41490 Gebze/ Kocaeli
Phone: +90 - 262-679 7979
Telefax: +90 - 262-679 7905
E-mail: satis@grundfos.com
Ukraine
Бізнес Центр Європа
Столичне шосе, 103
м. Київ, 03131, Україна
Телефон : (+38 044) 237 04 00
Факс.: (+38 044) 237 04 01
E-mail: ukraine@grundfos.com
United Arab Emirates
GRUNDFOS Gulf Distribution
P.O. Box 16768
Jebel Ali Free Zone
Dubai
Phone: +971 4 8815 166
Telefax: +971 4 8815 136
United Kingdom
GRUNDFOS Pumps Ltd.
Grovebury Road
Leighton Buzzard/Beds. LU7 4TL
Phone: +44-1525-850000
Telefax: +44-1525-850011
U.S.A.
GRUNDFOS Pumps Corporation
17100 West 118th Terrace
Olathe, Kansas 66061
Phone: +1-913-227-3400
Telefax: +1-913-227-3500
Uzbekistan
Grundfos Tashkent, Uzbekistan The
Representative Office of Grundfos
Kazakhstan in Uzbekistan
38a, Oybek street, Tashkent
Телефон: (+998) 71 150 3290 / 71 150
3291
Факс: (+998) 71 150 3292
Addresses Revised 09.08.2017
Grundfos companies
Page 18
98880508 1217
ECM: 1218564
www.grundfos.com
The name Grundfos, the Grundfos logo, and be think innovate are registered trademarks owned by Grundfos Holding A/S or Grundfos A/S, Denmark. All rights reserved worldwide. © Copyright Grundfos Holding A/S
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