Grundfos UPS3 15-50/65 User manual

UPS3
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions describe Grundfos
UPS3.
Sections 1-4 give the information necessary to be able to unpack,
install and start up the product in a safe way.
Sections 5-11 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 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety
instructions and service instructions.
The text accompanying the three hazard symbols DANGER,
WARNING and CAUTION is structured in the following way:
The hazard statements are structured in the following way:
1. General information 2
1.1 Hazard statements 2
1.2 Notes 3
2. Receiving the product 3
2.1 Inspecting the product 3
2.2 Scope of delivery 3
3. Installing the product 3
3.1 Mechanical installation 3
3.2 Pump positions 4
3.3 Control box positions 4
3.4 Insulating the pump housing 4
3.5 Electrical connection 5
3.6 Assembling the installer plug 6
4. Starting up the product 7
4.1 Before startup 7
4.2 Starting up the pump 7
4.3 Venting the pump 7
5. Product introduction 8
5.1 Product description 8
5.2 Applications 8
5.3 Pumped liquids 8
5.4 Identification 8
5.5 Accessories 9
5.6 Power supply 10
6. Control functions 11
6.1 Operating panel 11
6.2 Control modes 11
6.3 Pump performance 13
7. Setting the product 14
7.1 Constant curve I, II, III 14
7.2 Proportional pressure I, II and constant pressure mode
I, II 14
7.3 Setting the PWM input signal 14
8. Servicing the product 15
8.1 Dismantling the product 15
8.2 Dismantling the plug 15
9. Fault finding the product 16
9.1 Deblocking the shaft 17
10. Technical data 18
10.1 Dimensions, UPS3 15-50/65 19
10.2 Curve conditions 20
10.3 Performance curve, UPS3 15-50/65 20
11. Disposing of the product 21
Read this document and the quick guide before you
install 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)
3
1.2 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
5.4.1 Nameplate.
2.2 Scope of delivery
The box contains the following items:
• UPS3 pump
• installer plug
• two gaskets
• quick guide.
3. Installing the product
3.1 Mechanical installation
3.1.1 Mounting the product
1. The arrows on the pump housing indicate the flow direction
through the pump. See fig. 1.
2. Fit the two gaskets supplied with the pump when you mount
the pump in the pipe. Install the pump with a horizontal motor
shaft. See fig. 2. See also section 3.3 Control box positions.
3. Tighten the fittings. See fig. 3.
Fig. 1 Flow direction
Fig. 2 Pump installation
Fig. 3 Tightening 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.
TM07 0368 1518TM07 0369 1518TM07 0370 1518

English (GB)
4
3.2 Pump positions
Always install the pump with a horizontal motor shaft. Do not
install the pump with a vertical motor shaft. See fig. 4, bottom row.
• Pump installed correctly in a vertical pipe. See fig. 4, top row,
left.
• Pump installed correctly in a horizontal pipe. See fig. 4, top
row, right.
Fig. 4 Pump positions
3.3 Control box positions
The control box can be mounted in all positions. See fig. 5.
Fig. 5 Possible control box positions
3.3.1 Changing the control box position
3.4 Insulating the pump housing
Fig. 6 Insulating the pump housing
You can reduce the heat loss from the pump and pipe by
insulating the pump housing and the pipe with insulating shells,
which can be ordered as an accessory. See section
5.5.2 Insulating shells.
TM07 0371 1518
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.
CAUTION
Hot surface
Minor or moderate personal injury
- The pump housing may be hot due to the pumped
liquid being scalding hot. Close the isolating valves
on both sides of the pump and wait for the pump
housing to cool down.
CAUTION
Pressurised system
Minor or moderate personal injury
- Before dismantling the pump, drain the system or
close the isolating valves on both sides of the
pump. The pumped liquid may be scalding hot
and under high pressure.
TM06 7297 0918
Step Action Illustration
1
Make sure that
the inlet and
outlet valves are
closed.
Unscrew the
screws on the
pump head.
TM07 0372 1518
2
Turn the pump
head to the
desired position.
TM07 0373 1518
3
Refit the screws
on the pump
head.
TM07 0374 1518
TM07 0375 1518
Do not insulate the control box or cover the operating
panel.

English (GB)
5
3.5 Electrical connection
• The motor requires no external motor protection.
• Check that the supply voltage and frequency correspond to
the values stated on the nameplate. See section
5.4.1 Nameplate.
• Connect the pump to the power supply with the plug supplied
with the pump. See steps 1 to 7.
DANGER
Electric shock
Death or serious personal injury
- All electrical connections must be carried out by a
qualified electrician in accordance with local
regulations.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before starting any
work on the product. Make sure that the power
supply cannot 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)
6
3.6 Assembling the installer plug
Step Action Illustration
1
Loosen the cable
gland and unscrew
the union nut in the
centre of the terminal
cover.
TM06 8542 0918
2Detach the terminal
cover.
TM06 8543 0918
3
Pull the power cable
through the cable
gland and terminal
cover.
TM06 8544 0918
4
Strip the cable
conductors as
illustrated.
TM06 8545 0918
5
Loosen the screws
on the power supply
plug and connect the
cable conductors.
TM06 8546 0918 - TM06 8547 0918
6
Tighten the screws
on the power supply
plug.
TM06 8548 0918
L
PE
N42 mm
32 mm
Ø 5.5 - 10 mm
0.5 - 1.5 mm2
x 3
x 3
7
Refit the terminal
cover. See A.
Note: It is possible to
turn the power
supply plug on the
side for a 90 ° cable
entry. See B.
TM06 8549 0918 - TM06 8550 0918
8Tighten the union
nut.
TM06 8551 0918
9
Tighten the cable
gland onto the power
supply plug.
TM06 8552 0918
10
Insert the power
supply plug into the
male plug on the
pump.
TM07 0376 1518
Step Action Illustration
B
A

English (GB)
7
4. Starting up the product
4.1 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 10. Technical data.
When using the pump for the first time, the system must be
vented at the highest point. The pump is self-venting through the
system.
4.2 Starting up the pump
4.3 Venting the pump
Fig. 7 Venting the pump
Small air pockets trapped inside the pump may cause noise when
starting up the pump. However, because the pump is self-venting
through the system, the noise ceases over a period of time.
To speed up the venting process, do as follows:
1. Set the pump to speed III using the push-button on the
operating panel.
2. Let the pump run for approximately 30 minutes. How fast the
pump is vented depends on the system size and design.
When you have vented the pump, that is when the noise has
ceased, set the pump according to the recommendations. See
section 6. Control functions.
Step Action Illustration
1Open the inlet and
outlet valves.
TM07 0377 1518
2Switch on the power
supply.
TM06 8555 1317
3
The lights in the
operating panel
indicates that the
power supply has
been switched on
and the pump is
running.
TM07 0378 1518
0/Off
1/On
TM07 1416 1618
The pump must not run dry.
The pump is from factory set to constant curve III.
Hold 3 sec.
=
30 min.

English (GB)
8
5. Product introduction
5.1 Product description
UPS3 can be used as stand-alone or integrated circulator pump
in existing systems as replacement or in new systems with either
variable or constant flow rate.
5.1.1 Model type
These installation and operating instructions cover UPS3. The
model type is stated on the packaging and nameplate.
5.2 Applications
UPS3 is designed for circulating liquids in all kinds of heating
applications. The pumps are suitable for the following systems:
• Systems with constant or variable flows where it is desirable to
optimise the pump duty point.
• Installation in existing systems where the differential pressure
of the pump is too high during periods of reduced flow
demand.
• Installation in new systems for automatic adjustment of the
performance to flow demands without the use of bypass
valves or similar expensive components.
The speed can be controlled by a low-voltage PWM (Pulse Width
Modulation) signal.
High-efficiency ECM (Electronically Commutated Motor) pumps,
such as UPS3, must not be speed-controlled by an external
speed controller varying or pulsing the supply voltage.
The speed can be controlled by a low-voltage PWM (Pulse Width
Modulation) signal.
5.3 Pumped liquids
In heating systems, the water must meet the requirements of
accepted standards on water quality in heating systems, for
example the German guideline VDI 2035.
The pump is suitable for clean, thin, non-aggressive and
non-explosive liquids, not containing solid particles, fibres or
mineral oil.
• Maximum water/propylene glycol mixture is 50 %
• Maximum 10 mm2/s viscosity
Note: The water/propylene glycol mixture reduces the
performance due to higher viscosity.
See section 10. Technical data for further information.
5.4 Identification
5.4.1 Nameplate
Fig. 8 Nameplate
CAUTION
Flammable material
Minor or moderate personal injury
- Do not use the pump for flammable liquids, such
as diesel oil and petrol.
CAUTION
Corrosive substance
Minor or moderate personal injury
- Do not use the pump for aggressive liquids, such
as acids and seawater.
TM07 0791 1618
Pos. Description
1 Pump name
2 Minimum current [A]
3 Maximum current [A]
4 CE mark and approvals
5 Energy Efficiency Index, EEI
6 Voltage [V]
7Producttype
8 Material number
9 Serial number
10 Country of manufacture
11 Frequency [Hz]
12 Part, according to EEI
13 Enclosure class
14 Manufacturer’s name and address
15 Production code, year and week
16 Minimum liquid temperature
17 VDE code
18 TF class
19 Average compensated power input PL, avg [W]
20 Maximum system pressure
21 Maximum input power [W]
22 Minimum input power [W]
1
l 1 / 1 (A)
Grundfos Holding A/S
DK-8850 Bjerringbro
P 1 (W) MPa
Min.
Max.
X.XX
X.XX
XX
XXX X.X
((,0.XX - Part X
XXXV ~ XX/XXHz IPXXX TFXXX
P/N:XXXXXXXX PC:XXXXXXX
S/N:XXXXXXXX
Made in XXXXXXX
PL.avg.<XXW
Denmark
2
3
4
5
6
7
8
9
22
21
20
19
18
17
16
15
13 1410 11 12
Min.XX°CModel:XXXXXX X
GFNXX
UPS3
Hold 3 sec.

English (GB)
9
5.4.2 Type key
5.5 Accessories
5.5.1 Unions and valve kits
Note: The product numbers are always for one complete set,
including gaskets. The product numbers for the standard sizes
are printed in bold.
G-threads have a cylindrical form in accordance with the EN ISO
228-1 standard and are not sealing the thread. It requires a flat
gasket. You can only screw male G-threads (cylindrical) into
female G-threads. The G-threads are standard thread on the
pump housing.
R-threads are tapered external threads in accordance with the EN
10226-1 standard.
Rc- or Rp-threads are internal threads with either tapered or
cylindrical (parallel) threads. You can screw male R-threads
(conical) into female Rc- or Rp-threads. See fig. 9.
Fig. 9 G-threads and R-threads
Example UPS3 15 50/65 130
Pump type
Nominal diameter (DN) of inlet and outlet
ports [mm]
Maximum head [dm]
[ ]: Cast-iron pump housing
Port-to-port length [mm]
Product numbers, unions
Union nut with internal
threads
Union nut with
external threads
UPS3 Connection
3/4 1 1 1/4 1 1 1/4
15-xx G 1 1/2 529921 529922 529821 529925 529924
TM06 7632 3616
Rp
R
RRp Rc
G

English (GB)
10
5.5.2 Insulating shells
The insulating shells, which are tailored to the individual pump
type, can be ordered as accessories. It is easy to fit the insulating
shells around the pump.
5.5.3 Control box connections
The UPS3 control box has two electrical connections on one side:
the power supply and the control signal connection.
5.6 Power supply
The installer plug is supplied with the pump and is available as an
accessory.
Power cable adapters are also available as accessories.
5.6.1 Control signal connection
The control signal cable connection has three conductors: the
signal input, the signal output and the signal reference. Connect
the cable to the control box by a mini superseal plug. See fig. 11.
The optional signal cable can be supplied with the circulator as
an accessory.
The PWM signal connection is covered by a blind plug from the
factory. See fig. 10.
Fig. 10 Control signal connection
Fig. 11 Mini superseal plug
5.6.2 Cables and plugs
Pump type Product number
UPS3 15-50/65 99270706
TM07 0379 1518
TM06 58210216
1 x 230 V+ 10/ -15%
∽ 50/60 Hz
Picture Product description Length
[mm]
Product
number
Installer plug 99439948
Signal cable with mini superseal 2000 99165309

English (GB)
11
6. Control functions
6.1 Operating panel
Fig. 12 Operating panel
The operating panel shows the following:
• The control mode, after pressing the button
• Alarm status
6.1.1 Alarm or warning
If the pump has detected one or more alarms or warnings, the
first LED switches from green to red. When the fault has been
resolved the operating panel switches back to operating status.
See section 9. Fault finding the product.
6.2 Control modes
The pump has seven different control modes. Learn more about
them in the following sections.
6.2.1 Constant curve or constant speed, I, II or III (factory
setting)
At constant-curve or constant-speed operation, the pump runs at
a constant curve. The pump performance follows the selected
performance curve, I, II or III. See fig. 15 where II has been
selected.
Fig. 13 Constant-curve/-speed curve
The selection of the constant-curve or constant-speed setting
depends on the characteristics of the heating system in question.
6.2.2 Proportional pressure I, II
In proportional-pressure mode the pump performance follows the
selected performance curve I or II and adjusts the pump
performance to the actual heat demand in the system following
the proportional-pressure curve.
Fig. 14 Proportional-pressure curve
* Proportional pressure mode is not recommended in heating
systems that include an automatic bypass valve to ensure a
minimum flow for the heating appliances.
6.2.3 Constant pressure I, II
In constant-pressure mode the pump follows the selected
constant-pressure curve I or II, adjusts the pump performance to
the actual heat demand in the system following the selected
constant-pressure curve.
Fig. 15 Constant-pressure curve
Heating systems are relatively slow systems that cannot be set to
the optimum operation within minutes or hours.
If the recommended pump setting does not give the desired
distribution of heat in the rooms of the house, change the pump
setting to the shown alternative.
TM07 1516 1618
Symbol Description
Push-button
I, II, III Constant curve or constant speed curve I, II and
III
Proportional-pressure mode I, II
Constant-pressure mode, I, II
TM06 8822 1217
The pump is factory-set to constant curve III.
UPS3
Hold 3 sec.
Q
H
System
type
Recommended control
mode
Alternative control
mode
One-pipe
heating
system
Constant-pressure mode.
See section 6.2.3 Constant
pressure I, II
Constant curve or
constant speed, I, II
or III.
TM07 1552 1618
System
type
Recommended
control mode Alternative control mode
Two-pipe
system
Proportional-
pressure mode*
Constant curve or constant
speed I, II, III, see section
6.2.1 Constant curve or
constant speed, I, II or III
(factory setting)
TM07 1553 1618
System
type
Recommended
control mode Alternative control mode
Underfloor
heating
system
Constant-pressure
mode
Constant curve or constant
speed I, II, III, see section
6.2.1 Constant curve or
constant speed, I, II or III
(factory setting)
Q
H
I
II
Q
H
I
II

English (GB)
12
6.2.4 Selecting the control modes
Proportional pressure
We recommend proportional-pressure mode in variable flow
systems with relatively large pressure losses in the distribution
pipes such as:
• two-pipe heating systems with thermostatic valves and long
distribution pipes
• two-pipe heating systems with thermostatic valves and high
pressure losses in system parts with total flow
• primary circuit pumps in systems with large pressure losses in
the primary circuit.
Note: Proportional-pressure mode is not recommended in
heating systems that includes an automatic bypass valve to
ensure a minimum flow for the heating appliances.
Constant pressure
We recommend constant-pressure mode in variable flow systems
with relatively small pressure losses in the distribution pipes such
as:
• two-pipe heating systems with thermostatic valves and
dimensioned for natural circulation (former gravity systems)
• two-pipe heating systems with thermostatic valves and low
pressure losses in system parts with total flow
• one-pipe heating systems with thermostatic valves or pipe
balancing valves
• underfloor heating systems with zone valves
• primary circuit pumps in systems with small pressure losses in
the primary circuit.
Constant curve
We recommend constant-curve mode in constant-flow systems,
where both a constant flow rate and a constant head are required,
such as:
• heat surfaces
• replacement for uncontrolled circulators, for instance
integrated in boilers.
6.2.5 Externally controlled signal connection: PWM input
signal profile A (heating)
The UPS3 can be controlled via a digital low-voltage pulse-width
modulation (PWM) signal. For instructions on how to set the
connection, see section 7.3 Setting the PWM input signal.
The circulator runs on constant-speed curves depending on the
PWM input signal. The speed decreases when the PWM value
increases. If PWM equals 0, the circulator runs at maximum
speed.
Fig. 16 PWM input signal profile A (heating)
6.2.6 PWM feedback signal - power consumption
The PWM feedback signal offers pump information like in BUS
systems:
• current power consumption (accuracy ± 2 % of PWM signal)
• warning
•alarm
• operation status.
Alarms
Alarm output signals are available because some PWM output
signals are dedicated to alarm information. If a supply voltage is
measured below the specified supply voltage range, the output
signal is set to 75 %. If the rotor is locked due to deposits in the
hydraulics, the output signal is set to 90 % because this alarm
has a higher priority. See fig. 17.
Fig. 17 PWM feedback signal - power consumption
TM06 9136 1617
PWM input signal [%] Pump status
≤10 Maximum speed: max.
> 10 / ≤84 Variable speed: min. to max.
> 84 / ≤91 Minimum speed: IN
> 91/95 Hysteresis area: on/off
> 95 or ≤100 Standby mode: off
PWM input signal [%]
Max.
Speed
PWM input signal [%]
Max.
Speed [rpm]
TM07 1313 1118
25 50 100 150 200 250
10
20
30
40
50
60
70
80
90
100
Power [W]
Standby (stop)
Alarm stop: fault, blocked pump
Alarm stop: electrical fault
Warning Saturation at 70 Watt
Slope:1W/%PWM
PWM output signal [%]

English (GB)
13
6.3 Pump performance
Figure 18 shows the relation between pump setting and pump performance by means of curves.
Fig. 18 Pump setting in relation to pump performance
TM07 1541 1618
Setting Pump curve Function
IConstant curve or constant
speed I
The pump runs at a constant speed and consequently on a constant curve.
At speed I, the pump is set to run on the minimum curve under all operating conditions.
II Constant curve or constant
speed II
The pump runs at a constant speed and consequently on a constant curve.
At speed II, the pump is set to run on the intermediate curve under all operating conditions.
III Constant curve or constant
speed III (factory setting)
The pump runs at a constant speed and consequently on a constant curve.
At speed III, the pump is set to run on the maximum curve under all operating conditions.
Quick venting of the pump can be obtained by setting the pump to speed III for a short
period.
Proportional-pressure mode I,
II
The duty point of the pump will move up or down on a proportional-pressure curve,
depending on the heat demand in the system.
The head (pressure) is reduced at falling heat demand and increased at rising heat demand.
Constant-pressure mode I, II
The duty point of the pump will move out or in on a constant-pressure curve, depending on
the heat demand in the system.
The head (pressure) is kept constant, irrespective of the heat demand.
Q
H

English (GB)
14
7. Setting the product
7.1 Constant curve I, II, III
To set the product to constant curve I, II or III use the push-button
on the operating panel. Every time you press the push-button, the
pump setting is changed. The loop consists of four button
presses. The LEDs will indicate the chosen control mode. See fig.
19.
To learn more about each control mode, see section 6.2 Control
modes.
7.2 Proportional pressure I, II and constant pressure
mode I, II
To select a proportional-pressure or constant-pressure curve,
press and hold the push-button for 3 seconds. The LEDs will
indicate proportional pressure I. See fig. 19.
Press the push-button until you have set the pump to the desired
control mode. The loop consists of four button presses. The LEDs
will indicate the chosen control mode. See fig. 19.
To return to constant-curve settings, press and hold the button for
3 seconds.
To learn more about each control mode, see section 6.2 Control
modes.
Fig. 19 Operating panel LEDs indicating the different control modes
7.3 Setting the PWM input signal
To enable the external control mode (PWM profile A), you need a
signal cable connected to an external system. The cable
connection has three conductors: the signal input, the signal
output and the signal reference.
The cable is not supplied with the pump but can be ordered as an
accessory.
Fig. 20 Mini superseal plug
Set the signal connection
1. Make sure that the pump is turned off.
2. The PWM signal connection is covered by a blind plug.
Remove the plug.
3. Connect the signal cable with the mini superseal plug.
4. Switch on the power supply.
5. The pump automatically detects if a valid PWM signal is
available after which it enables the control mode on the pump.
See fig. 21.
Fig. 21 Connecting the signal cable to the UPS3
The pump is factory set to constant curve III.
TM07 0144 4817
PWM A PROFILE
CONSTANT CURVE I
CONSTANT CURVE II
CONSTANT CURVE III
3 s.
PP I
PP II
CP I
CP II
The cable must be connected to the control box via a
mini superseal plug. See fig. 20.
TM06 5821 0216
TM07 0379 1518
1 x 230 V+ 10/ -15%
∽ 50/60 Hz

English (GB)
15
8. Servicing the product
8.1 Dismantling the product
1. Switch off the power supply.
2. Pull out the plug. For instructions on how to dismantle the
plug, see section 8.2 Dismantling the plug.
3. Close the two isolating valves on both sides of the pump.
4. Loosen the fittings.
5. Remove the pump from the system.
8.2 Dismantling the plug
1. Loosen the cable gland and unscrew the union nut in the
centre of the terminal cover.
2. Detach the terminal cover.
3. Loosen the screws on the power supply plug and disconnect
the cable conductors.
4. Pull the power cable back through the cable gland and
terminal cover.
DANGER
Electric shock
Death or serious personal injury
- All electrical connections must be carried out by a
qualified electrician in accordance with local
regulations.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before starting any
work on the product. Make sure that the power
supply cannot be accidentally switched on.
CAUTION
Hot surface
Minor or moderate personal injury
- The pump housing may be hot due to the pumped
liquid being scalding hot. Close the isolating valves
on both sides of the pump and wait for the pump
housing to cool down.
CAUTION
Pressurised system
Minor or moderate personal injury
- Before dismantling the pump, drain the system or
close the isolating valves on both sides of the
pump. The pumped liquid may be scalding hot
and under high pressure.

English (GB)
16
9. Fault finding the product
If the pump has detected one or more alarms, the first LED
switches from green to red. When an alarm is active, the LEDs
indicate the alarm type as defined in fig. 22.
When there is no active alarm anymore, the operating panel
switches back to operating status and the first LED switches from
red to green.
Fig. 22 Fault finding table
If multiple alarms are active at the same time, the
LEDs only show the error with the highest priority.
The priority is defined by the sequence of the table.
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.
CAUTION
Hot surface
Minor or moderate personal injury
- The pump housing may be hot due to the pumped
liquid being scalding hot. Close the isolating valves
on both sides of the pump and wait for the pump
housing to cool down.
CAUTION
Pressurised system
Minor or moderate personal injury
- Before dismantling the pump, drain the system or
close the isolating valves on both sides of the
pump. The pumped liquid may be scalding hot
and under high pressure.
Status Fault Display Solution
Alarm
The pump
stops.
The pump is
blocked.
Deblock the shaft.
See section
9.1 Deblocking the
shaft.
Warning
The pump
keeps running.
The supply
voltage is low.
Make sure that there
is sufficient voltage
supply to the pump.
Alarm
The pump
stops.
Electrical error.
Replace the pump
and return the pump
your supplier.
ON
230
V
No.2
5 mm
1
2
3
ON
<160 V
ON
230
V
1
2
3 4

English (GB)
17
9.1 Deblocking the shaft
If the pump is blocked it is necessary to deblock the shaft. The
UPS3 deblocking device is accessible from the front of the
circulator without having to demount the control box. The force of
the device is high enough to deblock circulators, which are seized
by lime, e.g. if the pump has been turned off during summer.
Course of action:
1. Switch off the power supply.
2. Close the valves.
3. Locate the deblocking screw in the centre of the control box.
Use a star screwdriver with a size 2 Phillips tip to push the
deblocking screw inwards.
4. When the screw can be turned counterclockwise, the shaft
has been deblocked. Repeat step 3, if necessary.
5. Switch on the power supply.
Fig. 23 Deblocking the shaft
TM07 0387 1518
Before, during and after the deblocking, the device is
tight and must not release any water.
No.2
5 mm
1
2
3

English (GB)
18
10. Technical data
To avoid condensation in the stator, the liquid temperature must
always be higher than the ambient temperature.
Operating conditions
Sound pressure level The sound pressure level of the pump is lower than 43 dB(A)
Relative humidity Maximum 95 %, non-condensing environment
System pressure PN 10: Maximum 1.0 MPa (10 bar)
Inlet pressure
Liquid temperature Minimum inlet pressure
75 °C 0.005 MPa, 0.05 bar, 0.5 m head
95 °C 0.05 MPa, 0.5 bar, 5 m head
Ambient temperature 0-55 °C
Liquid temperature 2-95 °C
Liquid Maximum water/propylene glycol mixture is 50 %
Viscosity Maximum 10 mm2/s
Minimum switching time power on/off No specific requirements.
Maximum altitude of installation 2000 m above sea level
Electrical data
Supply voltage 1 x 230 V - 15 %/+ 10 %, 50/60 Hz, PE
Insulation class F
Standby power consumption < 0.3 W
Miscellaneous data
Motor protection The pump requires no external motor protection.
Enclosure class IPX4D
Temperature class (TF) TF95
Specific EEI values UPS3 15-50/65: EEI ≤0.20

English (GB)
19
10.1 Dimensions, UPS3 15-50/65
Fig. 24 UPS3 15-50/65
TM07 0792 1518
H2H1
H4
H3
B4
L3
B2B1
B3
G
L4
L
UPS3
Pump type
Dimensions [mm]
L L3 L4B1B2B3B4H1H2H3H4 G
UPS3 15-50/65 130 89 45 54 54 64 47 25 102 47 149 G 1 1/2

English (GB)
20
10.2 Curve conditions
The guidelines below apply to the performance curves on the
following pages:
• Test liquid: airless water.
• The curves apply to a density of ρ= 983.2 kg/m3and a liquid
temperature of 60 °C.
• All curves show average values and must not be used as
guarantee curves. If a specific minimum performance is
required, individual measurements must be made.
• The curves for speeds I, II and III are marked.
• The curves apply to a kinematic viscosity of = 0.474 mm2/s
(0.474 cSt).
• The EEI values obtained according to EN 16297 part 3.
10.3 Performance curve, UPS3 15-50/65
TM07 0800 1318
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 Q [m³/h]
0
1
2
3
4
5
6
[m]
H
0
10
20
30
40
50
60
[kPa]
p
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Q [l/s]
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 Q [m³/h]
0
10
20
30
40
50
60
[W]
P1
Setting P1
[W]
I1
[A]
Min. 40.05
Max. 60 0.52