Grundfos CMBE 1-44 User manual

CMBE
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

CMBE
English (GB)
Installation and operating instructions ..................................5
Български (BG)
Упътване за монтаж и експлоатация.................................22
Čeština (CZ)
Montážní a provozní návod ........................................39
Deutsch (DE)
Montage- und Betriebsanleitung .....................................56
Dansk (DK)
Monterings- og driftsinstruktion ......................................74
Eesti (EE)
Paigaldus- ja kasutusjuhend........................................90
Español (ES)
Instrucciones de instalación y funcionamiento...........................106
Suomi (FI)
Asennus- ja käyttöohjeet .........................................124
Français (FR)
Notice d'installation et de fonctionnement..............................140
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας................................158
Hrvatski (HR)
Montažne i pogonske upute .......................................176
Magyar (HU)
Telepítési és üzemeltetési utasítás ..................................192
Italiano (IT)
Istruzioni di installazione e funzionamento .............................210
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija ....................................228
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija .............................245
Nederlands (NL)
Installatie- en bedieningsinstructies ..................................262
Polski (PL)
Instrukcja montażu i eksploatacji....................................280
3
Table of contents

Português (PT)
Instruções de instalação e funcionamento .............................298
Română (RO)
Instrucţiuni de instalare şi utilizare...................................316
Srpski (RS)
Uputstvo za instalaciju i rad .......................................333
Русский (RU)
Паспорт, Руководство по монтажу и эксплуатации......................349
Svenska (SE)
Monterings- och driftsinstruktion ....................................367
Slovensko (SI)
Navodila za montažo in obratovanje .................................384
Slovenčina (SK)
Návod na montáž a prevádzku .....................................400
Türkçe (TR)
Montaj ve kullanım kılavuzu .......................................417
Українська (UA)
Інструкції з монтажу та експлуатації ................................434
中文 (CN)
安装和使用说明书 ..............................................452
Bahasa Indonesia (ID)
Petunjuk pengoperasian dan pemasangan.............................467
(AR) 
    .............................................484
Appendix A..................................................499
EC/EU declaration of conformity ..................................500
Moroccan declaration of conformity................................503
UK declaration of conformity.....................................505
Operating manual EAC .........................................506
Ukrainian declaration of conformity ................................508
4CMBE
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
2. Safety instructions ............. 6
3. Intended use ................. 8
3.1 Pumped liquids ................ 8
4. System sizing ................ 8
5. Mechanical installation ........... 8
5.1 Installation altitude .............. 8
6. Electrical connection ............ 9
6.1 Cable requirements .............. 9
6.2 Standard functional module, FM 200.....10
7. Starting up the product ...........13
7.1 Flushing the system..............13
7.2 Supplement to quick guide ..........13
7.3 Priming and venting the product .......13
7.4 Adjusting the diaphragm tank pressure . ..13
7.5 Shaft seal run-in................14
8. Control functions ..............15
8.1 Dry-running protection ............15
8.2 Pressure switch ................15
9. Setting the product .............16
9.1 Operating panel ................16
9.2 Setpoint setting ................16
9.3 Start/stop of pump ..............16
9.4 Resetting of fault indications .........16
10. Servicing the product ............17
10.1 Cable requirements ..............17
10.2 Megging ....................17
11. Taking the product out of operation ....17
12. Fault finding .................18
13. Technical data ................20
13.1 Operating conditions .............20
13.2 Supply voltage ................20
13.3 Overload protection ..............20
13.4 Cable requirements ..............20
14. Further product information ........21
15. Disposing of the product ..........21
1. General Information
Read this document 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 super-
vision 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.
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 seri-
ous personal injury.
CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or mod-
erate 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, in-
dicates 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. Safety instructions
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 can-
not be switched on accidentally.
Electrical connection
WARNING
Hot liquid
Death or serious personal injury
‐To avoid leakage do not overtighten
the pipe connections.
CAUTION
Sharp element
Minor or moderate personal injury
‐Wear personal protective equipment.
CAUTION
Crushing of feet
Minor or moderate personal injury
‐Wear safety shoes when moving the
product.
‐Use lifting equipment.
CAUTION
Back injury
Minor or moderate personal injury
‐Use lifting equipment.
DANGER
Electric shock
Death or serious personal injury
‐If national legislation requires a Resid-
ual Current Device (RCD) or equivalent
in the electrical installation, this must
be type B or better, due to the nature of
the constant DC leakage current. The
RCD must be marked with the follow-
ing symbols:
WARNING
Electric shock
Death or serious personal injury
‐Carry out the electrical connection in
accordance with local regulations.
WARNING
Electric shock
Death or serious personal injury
‐Check that the power plug delivered
with the product is in compliance with
local regulations.
‐The protective earth of the power outlet
must be connected to the protective
earth of the product. The plug must
therefore have the same PE connec-
tion system as the power outlet. If not,
use a suitable adapter if allowed by lo-
cal regulations.
WARNING
Electric shock
Death or serious personal injury
‐A supply disconnecting device made
according to EN 60204-1 5.3.2 must be
provided with means permitting it to be
locked in the OFF (isolated) position.
This device must also be installed in a
position according to EN 60204-1,
5.3.4.
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 local regulations.
6
English (GB)

WARNING
Electric shock
Death or serious personal injury
‐Comply with local regulations as to ca-
ble cross-sections.
Connection terminals for inputs and outputs
DANGER
Electric shock
‐Death or serious personal injury
‐Make sure that the wires to be connec-
ted to the connection groups below are
separated from each other by rein-
forced insulation in their entire lengths.
Starting up the product
WARNING
Hot liquid
Death or serious personal injury
‐If the temperature is higher than 50 °C,
use gloves and glasses when venting
the pump to avoid risk of scalding.
WARNING
Biological hazard
Death or serious personal injury
‐Flush the pump with clean water be-
fore first use.
Servicing the product
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 can-
not be switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐Drain the system or close the isolating
valves on either side of the pump.
WARNING
Biological hazard
Death or serious personal injury
‐When servicing the product, only use
Grundfos original spare parts.
WARNING
Electric shock
Death or serious personal injury
‐Comply with local regulations as to ca-
ble cross-sections.
Taking the product out of operation
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 can-
not be switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐Drain the system or close the isolating
valves on either side of the pump.
Fault finding
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 can-
not be switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐Drain the system or close the isolating
valves on either side of the pump.
WARNING
Biological hazard
Death or serious personal injury
‐When servicing the product, only use
Grundfos original spare parts.
7
English (GB)

3. Intended use
This product has been evaluated for use
with clean water only.
Only use the product according to the
specifications stated in these installation
and operating instructions.
3.1 Pumped liquids
The product is suitable for pumping clean, thin, non-
aggressive, non-toxic and non-explosive liquids
without solid particles or fibres.
If the water contains sand, gravel or other
debris, there is a risk of pump blockage
and pump damage.
Please install a filter on the inlet side or
apply a floating strainer to protect the
pump.
4. System sizing
The system in which the CME Booster is
incorporated must be designed for the
maximum pump pressure.
The pump is by default set to not stop until it reaches
its maximum 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 can-
not be switched on accidentally.
WARNING
Hot liquid
Death or serious personal injury
‐To avoid leakage do not overtighten
the pipe connections.
CAUTION
Sharp element
Minor or moderate personal injury
‐Wear personal protective equipment.
CAUTION
Crushing of feet
Minor or moderate personal injury
‐Wear safety shoes when moving the
product.
‐Use lifting equipment.
CAUTION
Back injury
Minor or moderate personal injury
‐Use lifting equipment.
5.1 Installation altitude
The installation altitude is the height above sea level
of the installation site.
• Products installed up to 1000 m above sea level
can be loaded 100 %.
• The motors can be installed up to 3500 m above
sea level.
Motors installed more than 1000 m above
sea level must not be fully loaded due to
the low density and consequent low cool-
ing effect of the air.
The motor output power (P2) in relation to the altitude
above sea level is shown in the graph below.
0
60
80
90
70
100
500 1000 1500 2000 2500 3000 3500 X
P2 [%]
TM055243
Derating of motor output (P2) in relation to altitude
above sea level
Pos. Description
x Altitude [m]
8
English (GB)

6. Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐If national legislation requires a Resid-
ual Current Device (RCD) or equivalent
in the electrical installation, this must
be type B or better, due to the nature of
the constant DC leakage current. The
RCD must be marked with the follow-
ing symbols:
WARNING
Electric shock
Death or serious personal injury
‐Carry out the electrical connection in
accordance with local regulations.
WARNING
Electric shock
Death or serious personal injury
‐Check that the power plug delivered
with the product is in compliance with
local regulations.
‐The protective earth of the power outlet
must be connected to the protective
earth of the product. The plug must
therefore have the same PE connec-
tion system as the power outlet. If not,
use a suitable adapter if allowed by lo-
cal regulations.
WARNING
Electric shock
Death or serious personal injury
‐A supply disconnecting device made
according to EN 60204-1 5.3.2 must be
provided with means permitting it to be
locked in the OFF (isolated) position.
This device must also be installed in a
position according to EN 60204-1,
5.3.4.
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 local regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
6.1 Cable requirements
WARNING
Electric shock
Death or serious personal injury
‐Comply with local regulations as to ca-
ble cross-sections.
See section Cable requirements for more information
on cable cross-sections and conductor types.
Related information
13.4 Cable requirements
6.1.1 Motor protection
The pump requires no external motor protection. The
motor incorporates thermal protection against slow
overloading and blocking, TP 211 according to IEC
34-11.
6.1.2 Protection against mains voltage transients
The pump is protected against voltage transients by
built-in varistors between the phases and between
phases and earth.
9
English (GB)

6.2 Standard functional module, FM 200
6.2.1 Inputs and outputs
The module has these connections:
• two analog inputs
• two digital inputs or one digital input and one
open-collector output
• Grundfos Digital Sensor input and output
• two signal relay outputs
• GENIbus connection.
All inputs and outputs are internally separated from
the mains-conducting parts by reinforced insulation
and galvanically separated from other circuits. All
control terminals are supplied with protective extra-
low voltage (PELV), ensuring protection against
electric shock.
6.2.2 Signal relay 1
LIVE: You can connect supply voltages up to 250
VAC to the output.
PELV: The output is galvanically separated from other
circuits. Therefore, you can connect the supply
voltage or protective extra-low voltage to the output
as desired.
6.2.3 Signal relay 2
PELV: The output is galvanically separated from other
circuits. Therefore, you can connect the supply
voltage or protective extra-low voltage to the output
as desired.
6.2.4 Connection terminals for the mains supply
Phases Terminals
Single-phase N, PE, L
Three-phase L1, L2, L3, PE
6.2.5 Connection terminals for inputs and outputs
DANGER
Electric shock
‐Death or serious personal injury
‐Make sure that the wires to be connec-
ted to the connection groups below are
separated from each other by rein-
forced insulation in their entire lengths.
3
15
8
26
23
25
24
7
B
Y
6
5
2
4
10
A
AI2
GDS RX
GDS TX
GND
GENIbus A
GENIbus B
+5 V
+24 V
+24 V
GND
GENIbus Y
GND
+5 V
DI1
AI1
DI3/OC1
+24 V*
+
+
+24 V*/5 V*
+24 V*
+5 V*
NC
C2
NO
NC
C1
NO
+24 V*
++
+24 V*/5 V*
+24 V*
+24 V*OC DI
GND
TM053510
Connection terminals, FM 200
* If you use an external supply source, there must be
a connection to GND.
10
English (GB)

Connection terminals for inputs and outputs, FM 200.
See fig. Connection terminals, FM 200.
Terminal Type Function
NC Normally closed contact
Signal relay 1 (LIVE or PELV)C1 Common
NO Normally open contact
NC Normally closed contact
Signal relay 2 (PELV only)C2 Common
NO Normally open contact
10 DI3/OC1 Digital input/output, configurable.
Open collector: Maximum 24 V resistive or inductive.
4 AI1
External sensor.
Pressure sensor: Pressure signal, 0.5 to 3.5
V. Connect the white wire to this terminal.
2 DI1
Digital input, configurable.
Digital input 1 is factory-set to be start or stop
input where an open circuit results in stop. A
jumper has been factory-fitted between termi-
nals 2 and 6. Remove the jumper if digital in-
put 1 is to be used as external start or stop or
any other external function.
5 +5 V Power supply to a potentiometer or sensor
6 GND Protective earth
A GENIbus, A GENIbus, A (+)
Y GENIbus, Y GENIbus, Y (GND)
B GENIbus, B GENIbus, B (-)
3 GND Protective earth
15 +24 V Power supply
8 +24 V Power supply
26 +5 V
Power supply to a potentiometer or sensor.
Pressure sensor: Voltage supply, +5 VDC,
PELV. Connect the brown wire to this terminal.
11
English (GB)

Terminal Type Function
23 GND
Protective earth.
Pressure sensor: GND, 0 V. Connect the
green wire to this terminal.
25 GDS TX Grundfos Digital Sensor output
24 GDS RX Grundfos Digital Sensor input
7 AI2
External sensor.
Pressure sensor: Temperature signal, 0.5 to
3.5 V. Connect the yellow wire to this terminal.
12
English (GB)

7. Starting up the product
WARNING
Hot liquid
Death or serious personal injury
‐If the temperature is higher than 50 °C,
use gloves and glasses when venting
the pump to avoid risk of scalding.
WARNING
Biological hazard
Death or serious personal injury
‐Flush the pump with clean water be-
fore first use.
Do not start the pump until it has been fil-
led with liquid.
7.1 Flushing the system
DANGER
Contaminated drinking water
Death or serious personal injury
‐Flush the system before starting it or
after a standstill period.
Drinking water systems
Hygiene
Grundfos pressure booster systems are functionally
tested by running water through the system. During
the test, Grundfos continuously surveys the quality of
the test water. Since it is not possible to completely
drain and dry the system after the test, the system
must be rinsed or flushed thoroughly before being
taken into use in a drinking water sector due to risk of
bacteria growth. This also applies if the system has
been shut down for a long period of time. Rinsing and
flushing must always be done in accordance with
local regulations.
Contaminated drinking water endangers health.
7.2 Supplement to quick guide
These instructions are a supplement to the quick
guide for CMBE and CMBE TWIN.
QR98388184
http://net.grundfos.com/qr/i/98388184
7.3 Priming and venting the product
1. Close the isolating valve on the outlet side.
2. Open the isolating valve on the inlet side.
3. Remove the priming plug.
4. Fill the pump with water until a steady stream of
liquid runs out of the filling hole.
5. Let all air out of the system.
6. Fit and tighten the priming plug.
7.4 Adjusting the diaphragm tank pressure
1. Check the precharge pressure in the diaphragm
tank. The correct precharge pressure is 0.7 times
the required outlet pressure (setpoint).
Measure the precharge pressure while
the system is pressureless.
2. Adjust the precharge pressure. Always use
nitrogen gas to refill the tanks.
13
English (GB)

7.5 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.
14
English (GB)

8. Control functions
8.1 Dry-running protection
Dry-running protection automatically stops the pump
in case of dry running to prevent damage to the
pump.
To build up pressure, the motor will run at maximum
speed. When the motor runs at maximum speed, the
power consumption will be measured and compared
to the expected values for power consumption when
the pump is filled with water. In case the measured
value is below the expected value, the pump will stop
with dry-running alarm.
1. The pump stops due to dry-running alarm.
2. The pump will restart 5 times every 10 seconds. If
the measured power consumption is still below
the expected value, the pump will stop.
3. After 5 minutes, the pump will try to restart again.
4. When water returns, you can either reset the
pump manually or wait for the pump to
automatically restart after 5 minutes.
8.2 Pressure switch
Some models of the pump is fitted with an adjustable
pressure switch as dry-running protection. The
pressure switch is fitted to the inlet manifold.
If the inlet pressure is below the lower
switching point, the system cannot start.
If the pressure switch has stopped the sys-
tem during operation due to the inlet pres-
sure being too low, the inlet pressure must
increase to a pressure that is higher than
the setting of the upper switching point be-
fore the system can restart.
If necessary, adjust the lower switching point by
turning screw A and adjust the upper switching point
to a value higher than the lower switching point by
turning screw B. See fig. Adjustment of switching
points.
Do not set the lower switching point to a
value below the minimum inlet pressure.
A B
TM058436
Adjustment of switching points
Pos. Description
A Low pressure SP
B High pressure SP
15
English (GB)

9. Setting the product
9.1 Operating panel
Stop
1
2
3
4
5
TM054848
Standard operating panel
Pos. Symbol Description
1
Grundfos Eye
Shows the operating status of
the pump.
See section Further product in-
formation.
2 - Light fields for indication of
setpoint.
3 Changes the setpoint.
4
Enables IR communication
with Grundfos GO Remote and
other products of the same
type.*
5
Makes the pump ready for op-
eration/starts and stops the
pump.
Start:
If the button is pressed when
the pump is stopped, the pump
will only start if no other func-
tions with higher priority have
been enabled. See section
Further product information.
Stop:
If the button is pressed when
the pump is running, the pump
will always be stopped. When
the pump is stopped via this
button, the "Stop" text next to
the button will be on.
*CME Boosters cannot communicate via radio.
Related information
14. Further product information
9.2 Setpoint setting
The setpoint must not be set higher than
the pressure which the pump can deliver.
Set the desired setpoint of the pump by pressing
or .
The light fields on the operating panel will indicate the
setpoint set.
Hmax: maximum head (see pump nameplate).
0
Hmax
TM057678
9.3 Start/stop of pump
Start the pump by pressing or by continuously
pressing until the desired setpoint is indicated.
Stop the pump by pressing . When the pump is
stopped, the "Stop" text next to the button will be on.
The pump can also be stopped by continuously
pressing until none of the light fields are on.
If the pump has been stopped by pressing , it can
only be given free to operation by pressing again.
If the pump has been stopped by pressing , it can
only be restarted by pressing .
9.4 Resetting of fault indications
A fault indication can be reset in one of the following
ways:
• Briefly press or on the pump. This will not
change the setting of the pump. A fault indication
cannot be reset by pressing or if the
buttons have been locked.
• Switch off the power supply until the indicator
lights are off.
• With Grundfos GO Remote.
16
English (GB)

10. Servicing the product
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 can-
not be switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐Drain the system or close the isolating
valves on either side of the pump.
WARNING
Biological hazard
Death or serious personal injury
‐When servicing the product, only use
Grundfos original spare parts.
10.1 Cable requirements
WARNING
Electric shock
Death or serious personal injury
‐Comply with local regulations as to ca-
ble cross-sections.
See section Cable requirements for more information
on cable cross-sections and conductor types.
Related information
13.4 Cable requirements
10.2 Megging
Megging of an installation incorporating
MGE motors is not allowed, as the built-in
electronics may be damaged.
11. Taking the product out of operation
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 can-
not be switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐Drain the system or close the isolating
valves on either side of the pump.
17
English (GB)

12. Fault finding
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 can-
not be switched on accidentally.
WARNING
Pressurised system
Death or serious personal injury
‐Depressurise the system before you
start any work on the product. The
pumped liquid may be scalding hot and
under high pressure.
‐Drain the system or close the isolating
valves on either side of the pump.
WARNING
Biological hazard
Death or serious personal injury
‐When servicing the product, only use
Grundfos original spare parts.
Fault Grundfos Eye Cause Remedy
Pump does not
run.
No lights on. Power supply failure. Switch on power supply.
Check cables and cable connec-
tions for defects and loose con-
nections.
Fuses blown. Check cables and cable connec-
tions for defects, and replace the
fuses.
Alarm.
Motor stopped.
Two opposite red indica-
tor lights flashing simul-
taneously.
Sensor is defective. Replace sensor.
Pump performance
is unstable.
No lights on. Pump inlet pressure too low. Check the inlet conditions of the
pump.
Inlet pipe is partly blocked by
impurities.
Remove and clean inlet pipe.
Leakage in inlet pipe. Remove and repair inlet pipe.
Air in inlet pipe or pump. Vent the inlet pipe or pump.
Check the inlet conditions of the
pump.
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English (GB)

Fault Grundfos Eye Cause Remedy
Pump has tried to
restart five times
and is now stop-
ped.
Alarm.
Motor stopped.
Two opposite red indica-
tor lights flashing simul-
taneously.
Pump inlet pressure too low. Check the inlet conditions of the
pump.
Inlet pipe is partly blocked by
impurities.
Remove and clean inlet pipe.
The foot or non-return valve
is blocked in closed position.
Remove and clean, repair or re-
place valve.
Leakage in inlet pipe. Remove and repair the inlet
pipe.
Air in inlet pipe or pump. Vent the inlet pipe or pump.
Check the inlet conditions of the
pump.
Pump runs back-
wards when
switched off.
No lights on. Leakage in inlet pipe. Remove and repair inlet pipe.
Foot or non-return valve de-
fective.
Remove and clean, repair or re-
place valve.
Foot valve is blocked in com-
pletely or partly open posi-
tion.
Remove and clean, repair or re-
place valve.
19
English (GB)

13. Technical data
13.1 Operating conditions
13.1.1 Maximum total head
Pump type Max. head[m]
CMBE 1-44 44
CMBE 1-75 75
CMBE 3-30 30
CMBE 3-51 51
CMBE 3-62 62
CMBE 3-93 93
CMBE 5-62 62
CMBE 10-54 54
13.1.2 Pressure
[bar] [MPa]
Min. inlet pressure (relative)
without pressure switch -0.1 -0.01
Min. inlet pressure with pres-
sure switch 1 0.1
Max. outlet pressure 10 1
Max. operating pressure 10 1
13.1.3 Ambient temperature during storage and
transportation
-30 to +60 °C.
13.1.4 Ambient temperature during operation
-20 to +50 °C.
The motor can operate with the rated power output
(P2) at 50 °C, but continuous operation at higher
temperatures will reduce the expected product life. If
the motor is to operate at ambient temperatures
between 50 and 60 °C, an oversized motor must be
selected. Contact Grundfos for further information.
See section Installation altitude.
Related information
5.1 Installation altitude
13.1.5 Liquid temperature
0-60 °C.
Heat protection:
> 80 °C: The pump will stop.
< 50 °C: The pump will start automatically.
13.1.6 Sound pressure level
≤ 55 dB(A).
13.1.7 Start/stop frequency
Max. 100/h.
13.2 Supply voltage
1 x 220-240 V - 10 %/+ 10 %, 50/60 Hz - 2 %/+ 2 %,
PE.
13.3 Overload protection
The overload protection of the E-motor has the same
characteristic as an ordinary motor-protective circuit
breaker. As an example, the E-motor can stand an
overload of 110 % of rated current for 1 minute.
13.4 Cable requirements
1 x 200-230 V
Power [kW] Cross-section
[mm2][AWG]
0.25 - 1.5 1.5 - 2.5 16-12
3 x 380-500 V
Power [kW] Cross-section
[mm2][AWG]
0.25 - 2.2 1.5 - 2.5 16-12
3.0 - 4.0 2.5 - 4 12-11
3 x 220 V, 3 x 380-500 V
Power [kW] Cross-section
[mm2][AWG]
1.1 - 1.5 1.5 - 2.5 16-12
2.2 - 4.0 2.5 - 4 12-11
Conductor types
Stranded or solid copper conductors.
Conductor temperature ratings
Temperature rating for conductor insulation: 60 °C
(140 °F).
Temperature rating for outer cable sheath: 75 °C (167
°F).
20
English (GB)