Grundfos LC 242 User manual

LC 242
Dual pump unit
Installation and operating instructions
LC 242, dual pump unit
Installation and operating instructions
Other languages
http://net.grundfos.com/qr/i/99630285
GRUNDFOS INSTRUCTIONS

LC 242
English (GB)
Installation and operating instructions ..........................................................5
Български (BG)
Упътване за монтаж и експлоатация.........................................................26
Čeština (CZ)
Montážní a provozní návod .................................................................49
Deutsch (DE)
Montage- und Betriebsanleitung .............................................................71
Dansk (DK)
Monterings- og driftsinstruktion ..............................................................94
Eesti (EE)
Paigaldus- ja kasutusjuhend ...............................................................113
Español (ES)
Instrucciones de instalación y funcionamiento ..................................................133
Suomi (FI)
Asennus- ja käyttöohjeet ..................................................................156
Français (FR)
Notice d'installation et de fonctionnement .....................................................177
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας........................................................200
Hrvatski (HR)
Montažne i pogonske upute ................................................................223
Magyar (HU)
Telepítési és üzemeltetési utasítás...........................................................243
Italiano (IT)
Istruzioni di installazione e funzionamento .....................................................264
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija ............................................................286
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija ....................................................308
Nederlands (NL)
Installatie- en bedieningsinstructies ..........................................................330
Polski (PL)
Instrukcja montażu i eksploatacji ............................................................353
Português (PT)
Instruções de instalação e funcionamento .....................................................376
Română (RO)
Instrucţiuni de instalare şi utilizare ...........................................................399
Srpski (RS)
Uputstvo za instalaciju i rad ................................................................420
Русский (RU)
Паспорт, Руководство по монтажу и эксплуатации.............................................441
Svenska (SE)
Monterings- och driftsinstruktion.............................................................464
Slovensko (SI)
Navodila za montažo in obratovanje .........................................................483
3
Table of contents

Türkçe (TR)
Montaj ve kullanım kılavuzu ................................................................505
Українська (UA)
Інструкції з монтажу та експлуатації ........................................................526
中文 (CN)
安装和使用说明书 .......................................................................549
(AR) ةيبرعلا
    ......................................................................568
Appendix A............................................................................588
Appendix B............................................................................593
4LC 242
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. Installing the product .......................6
2.1 Location ................................6
2.2 Mechanical installation .......................6
2.3 Electrical connection.........................8
3. Starting up the product .....................11
3.1 Connecting to Grundfos GO Remote..............11
3.2 Startup wizard on Grundfos GO Remote ...........11
3.3 Startup wizard on the operating panel .............11
3.4 How to enable Bluetooth on the operating panel.......12
3.5 How to disable Bluetooth on the operating panel ......12
3.6 Configuring the IO terminals using Grundfos GO
Remote................................12
3.7 Testing the product.........................12
4. Product introduction.......................12
4.1 Product description ........................12
4.2 Intended use ............................12
4.3 Features ...............................12
4.4 Application types ..........................12
4.5 Terminals ..............................13
4.6 Identification.............................14
4.7 Supported communication interface modules and
protocols ...............................14
5. Control functions .........................15
5.1 Operating panel ..........................15
6. Setting the product........................15
6.1 Setting the application type with Grundfos GO Remote. ..15
6.2 Setting the sensor type ......................15
6.3 Setting the start level .......................15
6.4 Setting the stop level .......................16
6.5 Setting the high level .......................16
6.6 Stop delay ..............................16
6.7 Power-on delay...........................16
6.8 Dry-running protection.......................16
6.9 Multipump settings .........................16
6.10 Using the same level switch for the start and stop level ..17
6.11 Automatic test run .........................17
6.12 Setting the limit exceeded function ...............17
6.13 Signal-detection time .......................17
6.14 Setting the maximum number of restarts with Grundfos
GO Remote .............................17
6.15 Setting the service interval with Grundfos GO Remote . ..17
6.16 Operating the product .......................17
6.17 Motor protection ..........................18
6.18 Alarm reset .............................18
6.19 Setting the buzzer with Grundfos GO Remote ........18
6.20 Setting units for Grundfos GO Remote.............18
6.21 Setting units for the operating panel with Grundfos GO
Remote................................19
6.22 Setting the user-configurable logwith Grundfos GO
Remote................................19
6.23 Setting a time schedule with Grundfos GO Remote .....19
6.24 GENIbus ...............................19
6.25 Security ...............................19
6.26 Starting the startup wizard with the operating panel .....19
7. Servicing the product ......................19
7.1 Updating the product software..................19
7.2 Replacing the battery .......................20
7.3 Replacing the control unit.....................20
7.4 Replacing the CIM module ....................20
7.5 Replacing the fuse .........................20
8. Fault finding the product ....................21
8.1 Overview of alarm and warning codes .............21
8.2 Code 2 (Power phase missing) .................21
8.3 Code 3 (External alarm via DI)..................21
8.4 Code 4 (Too many motor restarts) ...............21
8.5 Code 9 (Power phase sequence wrong)............21
8.6 Code 12 (Service needed) ....................21
8.7 Code 17 (Low system performance) ..............21
8.8 Code 22 (Moisture in motor of pump) .............22
8.9 Code 25 (Wrong configuration) .................22
8.10 Code 46 (External warning via DI) ...............22
8.11 Code 48 (Motor is overloaded) .................22
8.12 Code 57 (Missing water in the application) ..........22
8.13 Code 69 (Winding temperature too high) ...........22
8.14 Code 84 (Memory storage media faulty)............22
8.15 Code 94 (Limit exceeded 1) ...................22
8.16 Code 95 (Limit exceeded 2) ...................23
8.17 Code 117 (Door opened) .....................23
8.18 Code 130 (Cable theft) ......................23
8.19 Code 157 (Real-time clock monitoring) ............23
8.20 Code 159 (Communication error CIMxxx) ...........23
8.21 Code 165 (Signal fault) ......................23
8.22 Code 191 (High water level) ...................23
8.23 Code 205 (Level switch inconsistency) ............23
8.24 Code 225 (Communication error pump module) .......23
8.25 Code 226 (Communication error IO module) .........23
8.26 Code 229 (Water on floor) ....................24
9. Technical data ...........................25
9.1 Electrical data............................25
9.2 Mechanical data ..........................25
9.3 Environmental data ........................25
9.4 Temperature.............................25
9.5 Dimensions .............................25
9.6 Weights ...............................25
10. Disposing of the product ....................25
1. General information
Read this document before you install the product. Instal-
lation and operation must comply with local regulations
and accepted codes of good practice.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
5
English (GB)

1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol indi-
cates 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 mal-
function or damage to the equipment.
Tips and advice that make the work easier.
2. Installing the product
2.1 Location
Install the product in a location that meets the following
requirements:
• Place the product in a flood-safe place.
• Make sure that the ambient temperature is within the limits.
• Install the product as close as possible to the connected pumps,
sensors, and accessories.
• The product must be protected from direct sunlight.
• The product must be easily accessible.
• We recommend that you install the product in a protective shed
or enclosure to avoid direct sunlight and rain.
• Indoor installation: The product must be installed in a well-
ventilated room to ensure cooling of its components.
2.2 Mechanical installation
2.2.1 Installing the control unit
The product is designed to be mounted on a flat and vertical
surface. The cable glands must face downwards.
To ensure sufficient ventilation, allow at least 150 mm
(5.9") of space on either side of the cabinet.
1. Drill holes in the surface. Use the measurements below
depending on the type of cabinet. See the product's data
booklet for more information about cabinet types.
2. Insert wall plugs, if applicable.
3. Fit the four screws in the mounting holes and cross-tighten the
screws.
6
English (GB)

A
B
C
D
E
TM072025
Type Dimensions [mm] (inches)
A B C D E
Plastic cabinet 278 (10.9) 254 (10) 378 (14.9) 354 (13.9) 180 (7)
Metal cabinet 500 (19.7) 455 (17.9) 600 (23.6) 525 (20.7) 250 (9.8)
Metal cabinet 500 (19.7) 455 (17.9) 700 (27.6) 625 (23.6) 250 (9.8)
A
B
C
D
E
TM072026
Type Dimensions [mm] (inches)
A B C D E
Plastic cabinet 278 (10.9) 254 (10) 558 (21.9) 534 (21) 130 (5.12)
Plastic cabinet 378 (14.9) 354 (13.9) 558 (21.9) 534 (21) 180 (7)
Related information
9.5 Dimensions
2.2.2 Installing a communication interface module
You can fit a communication interface module (CIM) in the control
unit to enable communication with external systems. The module is
optional and is not delivered with the product. See the installation
and operating instruction for the module regarding electrical
connections.
Use an antistatic service kit when handling electronic
components. This prevents static electricity from damag-
ing the components.
1. Remove the screw in the back cover of the CU product.
TM071905
7
English (GB)

2. Remove the back cover.
TM071906
3. Break off the tap.
TM071977
4. Fit the CIM module.
1 Nm
TM071907
5. If supplied, place the labels on the back cover.
Type:
Kit Funct. module - Geni/RS485Op
0538
9854
CIM XXX
CIM XXX
96824795
V01
Prod. No.
Version Serial No.
P. C.
TM071908
6. Refit the back cover to the CU product and secure it with the
mounting screw. Secure cables using the cable tie holders.
1.25 Nm
TM071909
Related information
8.20 Code 159 (Communication error CIMxxx)
2.3 Electrical connection
2.3.1 Motor overload protection
For installation of the motor overload protection, follow the
manufacturer's installation manual.
2.3.2 Protection of controller and supply cables
The controller and power cables must be protected against short-
circuits and overloads. The protection must be accomplished using
components such as:
• fuse of melt type gL and gG
• fuse type gD
• circuit breaker of type C.
See the rated current for this specific product on the product
nameplate.
8
English (GB)

Related information
4.6.1 Nameplate
2.3.3 Connecting the pump supply and power supply
Pumps may be equipped with PTC/Klixon sensors (thermal
switched) which protect against overheating.
Some also have moisture sensors indicating water in the pump.
DANGER
Electric shock
Death or serious personal injury
‐In case of an insulation fault, the fault current may be
a pulsating DC. Observe national legislation about re-
quirements for and selection of Residual Current De-
vice (RCD) when installing the product.
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before making any electri-
cal connections.Make sure that the power supply can-
not be switched on accidentally.
‐Remember to indicate where the main switch is loca-
ted by placing a label or similar marking on the control
unit.
‐Make sure that the voltage between the phase and
neutral does not exceed 250 VAC.
‐Electrical connections must be carried out according to
the wiring diagrams.
Do not add additional components other than those illus-
trated on the wiring diagram. Do not use unused pin holes
for other connections.
All cable glands and plugs must be mounted after the in-
stallation is completed.
If the gaskets are not pre-mounted on the cable glands,
mount them on the cable glands before the control unit is
mounted on the wall.
For the PTC connection, do not connect the third wire
(common wire) in the control unit. It must be isolated with
a cable-end cap.
Take into account the total leakage current of all the electrical
equipment in the installation.
1. Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
2. Cut the power supply and pump cables as short as possible.
3. Before switching the power on, check all voltages with a
multimeter and make sure that the voltage between neutral and
each phase does not exceed 250 VAC.
4. Connect the power cables and pump cables according to the
relevant electrical diagram, including the cables from the motor
temperature and moisture sensor, if any. Tighten the terminal
screws to the correct torque. See the table below.
• All wires must be secured inside the cabinet using
cable ties.
• The wires must not cross the safety barriers be-
tween the connectors.
• All cable glands must be mounted and plug-
ged, even if they are not in use, to ensure the cor-
rect IP protection level.
Remember to remove the jumper from the PTC terminal if you
are connecting cables from the temperature sensor to the PTC
terminals.
Terminal block Torque [Nm]
Pump contactor 1.2 - 1.5
Power supply 1.2 - 1.5
Cable glands 2.5
TM070570
Connecting a wire to a terminal with spring clamps
5. In case there is only a PTC sensor present in the pump, the two
wires from the PTC sensor have to be connected directly to the
PTC terminals.
6. In cases where PTC and moisture sensors are present, you end
up with three wires: a PTC wire, a moisture sensor wire and a
common wire. Connect only the PTC wire and the moisture
sensor wire. The common wire must be isolated.In Grundfos GO
Remote, you must select that both the PTC wire and
the moisture sensor wire are connected, and select a cool-down
time for the thermal protection.
2
1
PTC1/PTC2
PTC1/PTC2
TM076634
PTC connection
Pos. Description
1 PTC/Klixon sensors
2 Moisture sensors
Mains
Pump#1
Pump#2
Fuse Terminal
L
N
1U2
1N2
1Z2
2U2
2N2
2Z2
Run Capacitor
Protective
Earth
PTC2
PTC1
Recommended PTC wiring
Example:
9
English (GB)

MPF2 GND MPF1
Power Supply
CT-sensor
Grundfos IO242 Pump -- module
Pump#2
Pump#1
Mains
Protective Earth
Fuse Terminal
AUX
Auto Fuse
L1 L2 L3 N
CT-sensor
Contactor
Overload
Relay
Contactor
Overload
Relay
IO242
PTC 2A PTC 1A PTC 1B PTC 2B
GND GND DI 1 GND GND DI 3 DI 2 GND 24VEXT
ADI
DI 4
Cable duct for Auxiliary wiring
PTC2
PTC1
TM072523
Three-phase connections for two pumps
Power Supply
CT-sensor
Grundfos IO242 Pump -- module
Pump#2
Pump#1
Mains
Protective Earth
AUX
Auto Fuse
L1 L2 L3 N
CT-sensor
Contactor
Overload
Relay
Contactor
Overload
Relay
IO242
PTC 2A PTC 1A PTC 1B PTC 2B
MPF2 GND MPF1
GND GND DI 1 GND GND DI 3 DI 2 GND 24VEXT
ADI
DI 4
Cable duct for Auxiliary wiring
Max.
250 VAC
phase-phase
PTC2
PTC1
TM072552
Three-phase connections for two pumps without neutral, for Norway
only
Related information
8.2 Code 2 (Power phase missing)
8.5 Code 9 (Power phase sequence wrong)
2.3.4 Connecting a level sensor
You can either connect an analog level sensor, such as a pressure
sensor, or a digital level sensor, such as a float switch.
1. Lead the wires through one of the cable glands and the cable
tray.
2. Depending on the type of cable, take one of the following
actions:
• For low-voltage cables, lead the wires through the right side
of the cable tray.
• For signal cables that in the event of an insulation fault can
obtain high-voltage potential, lead the wires through the left
side of the cable tray.
10
English (GB)

3. Depending on the type and function of the sensor, connect the
wires to the following terminals:
Sensor type Sensor function Terminals
Analog All levels ADI - 24 V
Digital
Dry-running level DI1 - GND
Stop level DI2 - GND
Start level, pump 1 DI3 - GND
Start level, pump 2 DI4 - GND
High level ADI - GND
TM070570
Related information
3.6 Configuring the IO terminals using Grundfos GO Remote
2.3.5 Connecting an alarm device
You can connect an alarm device, such as a buzzer or a lamp, to
the output relays Alarm 1 and Alarm 2. The control unit triggers the
alarm device when it detects an alarm or a warning. You can
change the behaviour of the outputs with Grundfos GO Remote
under Relay output 1 and Relay output 2.
You can also set the alarm device to be activated during normal
operation. It will only be deactivated in case of an alarm, a
warning or mains failure. The setting is made in Grundfos GO
Remote.
Go to Settings > IO 242 > Relay output > Function.
Default settings of the terminal blocks
Terminal block Default function
Alarm 1 All alarms
Alarm 2 High level
1. Depending on the type of the alarm device, connect the wires to
the relevant terminals. Note that all wires must be secured
inside the cabinet using cable ties.
•NO (Normally Open) and C (Common)
•NC (Normally Closed) and C (Common).
2. Tie the wires with cable ties.
DI 4 GND GND GND DI 3 DI 2
GND
ADI
24 V
EXT
Max. 2A Max. 2A
REL 4C REL 3C REL 4O REL 3O REL 3 REL 4
TM071997
3. Starting up the product
3.1 Connecting to Grundfos GO Remote
Before connecting the product to Grundfos GO Remote, the
Grundfos GO Remote app must be downloaded to your smartphone
or tablet. The app is free of charge and available for iOS and
Android devices.
1. Open Grundfos GO Remote on your device. Make sure that
Bluetooth is enabled.
Your device must be within reach of the product to establish
Bluetooth connection.
2. Press the Bluetooth CONNECT button on Grundfos GO
Remote.
3. Press the connect button on the operating panel. The blue LED
above the connect button is flashing until your device is
connected. Once the connection is established, the LED will be
permanently on.
Grundfos GO Remote is now loading the data for the product.
Related information
3.4 How to enable Bluetooth on the operating panel
3.5 How to disable Bluetooth on the operating panel
3.2 Startup wizard on Grundfos GO Remote
The product is designed for Bluetooth communication with Grundfos
GO Remote.
Once you have connected your product to Grundfos GO Remote, a
startup wizard appears. Follow the instructions to make your
settings.
Grundfos GO Remote enables you to set functions and gives you
access to status overviews, technical product information and
current operating parameters.
3.3 Startup wizard on the operating panel
The first time the control unit is switched on, a startup wizard will
guide you through the basic settings. You can select the sensor
type and sensor levels. For some products, you can also set the
nominal pump current and number of phases.
If you have an analog sensor, select S-1 and set the height of the
different levels, from dry running to high level.
If you have a digital sensor, select S-2 and enable or disable the
dry-running level, the start level for pump 2, if available and the high
level.
To change settings, use the Up and Down buttons on the operating
panel.
Use the OK button to confirm each setting and navigate to the next
setting.
For filling applications, you must use Grundfos GO Remote. Units
can only be changed with Grundfos GO Remote.
11
English (GB)

Designation Description
S-1 Analog sensor
S-2 Digital sensor
Related information
6.1 Setting the application type with Grundfos GO Remote
6.26 Starting the startup wizard with the operating panel
3.4 How to enable Bluetooth on the operating panel
If the Bluetooth signal on the operating panel has been disabled for
some reason, you are not able to connect with Grundfos GO
Remote. You must enable Bluetooth first.
1. Press and hold the connect button on the operating panel for 15
seconds. Wait for the blue LED to light up.
2. Press the Bluetooth CONNECT button on Grundfos GO
Remote.
3. Press the connect button on the operating panel. The blue LED
above the connect button is flashing blue until your device is
connected.
Grundfos GO Remote is now loading the data for the product.
Related information
3.1 Connecting to Grundfos GO Remote
3.5 How to disable Bluetooth on the operating panel
In some installation areas, it is not allowed to have a Bluetooth
signal enabled during operation. After installation, the Bluetooth
signal must be disabled manually.
1. Press and hold the connect button on the operating panel for 15
seconds. Wait for the blue LED to switch off.
Grundfos GO Remote is no longer connected to the product.
Related information
3.1 Connecting to Grundfos GO Remote
3.6 Configuring the IO terminals using Grundfos GO
Remote
The control unit is equipped with configurable input and output
terminals. Using Grundfos GO Remote, you can configure the
terminals for different functions, depending on the device connected
to the terminals.
1. Go to Settings > IO 242.
2. Select the terminal you wish to configure and follow on-screen
instructions.
You can find the names of the terminals inside the
control unit.
Related information
2.3.4 Connecting a level sensor
8.9 Code 25 (Wrong configuration)
8.22 Code 191 (High water level)
8.23 Code 205 (Level switch inconsistency)
9.1 Electrical data
3.7 Testing the product
When you have made all the electrical installations and completed
the startup wizard, you can test the system.
For dewatering applications:
• Ensure the pit is filled with water and check that the pump starts
automatically at the defined level.
• If possible, test the dry-running function by starting the pump
manually and wait while the pit with the pump is emptied. Check
that the control unit indicates an alarm and stops the pump
when the defined level is reached.
For filling applications:
• Start by draining the tank to be filled. When the tank is empty
and the start level is reached, the pump must start. When the
tank is full and the stop level is reached, the pump must stop.
• Test the high-level function by stopping the pump manually and
continue to fill the tank without the pump with water. Check that
the control unit indicates an alarm when the defined level is
reached.
• Test the dry-running function by starting the pump manually and
wait while the tank with the pump is emptied. Check that the
control unit indicates an alarm and stops the pump when the
defined level is reached. If the pump is placed in a well, this test
may not be possible since the pump cannot empty the well.
Alternatively, pull the dry-run level switch up to simulate a dry-
run situation. The same can be done with a pressure level
sensor.
4. Product introduction
4.1 Product description
The level-control unit switches the pump on and off according to the
liquid level measured by float switches or a pressure sensor. When
the start level is reached, the pump starts, and when the liquid level
has been lowered to the stop level, the pump is stopped by the
control unit. An alarm is indicated in case of for example high-water
level in the tank or sensor failure.
Basic settings are configured via the operating panel and advanced
settings are configured with Grundfos GO Remote. Furthermore,
you can read important operating parameters with Grundfos GO
Remote.
4.2 Intended use
The product is designed to control one or two pumps.
The product can be configured for the following two purposes:
• dewatering in groundwater supply
• filling a tank.
The product can be used for the following applications:
• groundwater supply
• irrigation systems
• small waterworks
• network pumping stations
• main pumping stations
• commercial buildings
• municipal systems.
The product must not be exposed to strong solvents or oil-
containing liquids.
4.3 Features
The control unit features among others the following functions:
• support of up to two pumps
• manual and automatic control of the pump
• Bluetooth pairing with Grundfos GO Remote
• operating indication, such as power on and pump running
• alarm and warning indication, such as power phase missing and
high-water level
• motor and phase failure protection
• setting of stop delays matching the actual operating conditions
• automatic alternation of pumps.
4.4 Application types
You can choose between two application types:
•Dewatering
•Fill.
You can set the application type with Grundfos GO Remote.
12
English (GB)

Dewatering
1
2
3
4
5
TM075202
Pos. Description
1High level
2Start level P2: start level for pump 2
3Start level P1: start level for pump 1
4Stop level
5Dry-running level
The pump starts to empty the tank or well when Start level P1 is
reached.
A second pump starts when the liquid level reaches Start level P2.
The pump stops when the liquid level is lowered to Stop level.
If the inflow of liquid exceeds the capacity of the installed pump, the
level in the tank or well starts to rise. Eventually, the High level
sensor registers a high liquid level in the tank or well. If set, the
signal from the High level sensor can be used to activate an output
relay which can then be used to give a visual or acoustic alarm or
send a signal to a SCADA system.
If the pump is running and the liquid level in the tank or well falls
below the dry-running level, the dry-running protection stops the
pump to ensure that it is not damaged mechanically.
Fill
1
2
3
4
5
TM075203
Pos. Description
1High level
2Stop level
3Start level P1: start level for pump 1
4Start level P2: start level for pump 2
5Dry-running level
In the filling application, the pump is installed in a tank or well from
where it pumps the liquid. The liquid is pumped into a second tank
where the level sensors are installed.
The pump starts to fill the second tank when Start level P1 is
reached.
A second pump starts when the liquid level reaches Start level P2.
The pump stops when the liquid level reaches Stop level.
If the pump for some reason does not stop at Stop level and the
liquid level keeps rising, the High level sensor eventually
registers this. If set, the signal from the High level sensor can be
used to activate a relay output which can then be used to give a
visual or acoustic alarm or send a signal to a SCADA system via a
communication interface.
If the pump is running and the liquid level in the tank falls below the
dry-running level, the dry-running protection stops the pump to
ensure that it is not damaged.
Related information
6.1 Setting the application type with Grundfos GO Remote
6.16.1 Automatic operation
4.5 Terminals
26
27
28
29
30
31
32 7
6
8
9
10
11
12
23 2225 24 21 20 19 18 17 16 15 14 13
1
2 3 45
Max. 2A Max. 2A
24 V GND
REL 4C
GND DI 4 GND GND GND MPF2 MPF1 GND DI 3 DI 2 DI 1 GND 24 V
EXT
ADI
REL 3C PTC 2B PTC 2A PTC 1A REL 2 COM REL 1
L1 L2 L3 N
PTC 1B
CT 2B CT 2A CT 1A CT 1B
REL 4O
REL 3O REL 3 REL 4
GENI
480Y / 277V AC
IO 242
33
12
ON
TM072017
Remember to separate potentially low-voltage cables
from potentially high-voltage cables when connecting
them to the control unit.
Pos. Description
1 Current transformer, pump 1. Optional.
2 Current transformer, pump 2. Optional.
3 GENIbus
4 Switch for termination resistor, SW1
5 Not in use
6 Supply voltage, 24 VDC
7 User-configurable output relay 4, normally closed
8 User-configurable output relay 4, common
9 User-configurable output relay 4, normally open
10 User-configurable output relay 3, normally open
11 User-configurable output relay 3, common
12 User-configurable output relay 3, normally closed
13 Supply voltage for sensors, 24 VDC, max. 50 mA
14 Ground, GND
15 User-configurable analog or digital input
16 Ground, GND
17 Digital input 4
18 Ground, GND
19 Digital input 3
20 Ground, GND
21 Digital input 2
22 Ground, GND
13
English (GB)

Pos. Description
23 Digital input 1
24 Motor-protection feedback
25 Phase monitoring
26 Temperature and moisture sensor input, pump 1
27 Temperature and moisture sensor input, pump 1
28 Temperature and moisture sensor input, pump 2
29 Temperature and moisture sensor input, pump 2
30 Relay output, pump 1
31 Common
32 Relay output, pump 2
33 Caution! Only dedicated current transformers can be
connected to these terminals.
4.6 Identification
4.6.1 Nameplate
No. Ipump min lpump max
S.N.
OPT:
Ifuse max: A
Type:
P.N.:
U :N
P.C.:
Icc:kA
Tamb:°C
Pumps: A
IP Class:
Weight: kg
Assembled in Denmark
DK - 8850 - Bjerringbro - Denmark
99350753
A
P6
1 2 3 4 5
67891011121314
15
16
17
18
19
InA:
EN 61439-2
TY 3432-021-59379130-2014
20
21
22
UK importer: Grundfos Pumps ltd
Grovebury Road Leighton
Buzzard, LU7 4TL
A
TM071725
Pos. Description
1 Product name
2 Serial number
3 Short-circuit current rating [kA]
4 Minimum to maximum ambient temperature
5 Maximum fuse size
6 Maximum nominal pump current
7 Russian technical condition number
8 Markings and approvals
9UK importer address *
10 Minimal nominal pump current
11 EN standard
12 QR code
13 Factory code
14 Weight
15 Production site
16 Enclosure class
17 Options
18 Number of pumps
Pos. Description
19 Nominal current
20 Production code (year and week)
21 Supply voltage
22 Version number and material number
*Only valid for products imported from the UK.
Related information
2.3.2 Protection of controller and supply cables
9.1 Electrical data
9.3 Environmental data
9.6 Weights
4.6.2 Type key for LC 242
Example LC 242 2x 9-26 DOL 30 150 3 x 400 PI OPT
Pos. 1 2 3 4 5 6 7 8 9
Pos. Description
1Type:
• LC 242: panel version
2 Number of pumps supported
3 Current range of pumps [A]
4
Starting method:
• DOL: direct-on-line
• SD: star-delta
• SST: soft starter
5 Operating capacitor [µF]
6 Starting capacitor [µF]
7 Supply voltage [V]
8
Panel type:
• MI: Metal
• PI: Plastic
9
OPT: Options.
• BB: Battery backup
• CT: Current transformer
• D: Fault light system
• E: Main disconnect switch
• F: Circuit breaker per pump
• H: ON/OFF/AUTO switch
• I: RCD per panel
• J: RCD per pump
• K: Ex barrier analog 4-20 mA
• L: Ex barrier digital
• M: IO 241
• N: DIN-mount electrode relay for two electrodes and
REF (CLD4MA2DM24)
4.7 Supported communication interface modules and
protocols
The following Grundfos communication interface modules can be
added to the product.
Communication interface module Protocol
CIM 050 GENIbus
CIM 150 PROFIBUS DP
CIM 200 Modbus RTU
CIM 260 3G/4G
CIM 270*GRM
14
English (GB)

Communication interface module Protocol
CIM 280*Grundfos Utility Connect
CIM 300 BACnet
CIM 500
Modbus TCP
PROFINET IO
GRM IP
*Not supported.
5. Control functions
5.1 Operating panel
1 2 3 4 5 6 7
8
9
10
11
8
12
15
14
13
Reset OK
TM075156
Pos. Symbol Description
1 Display
2
ft
m
Units
3 High level
4 Start level, pump 2
5 Start level, pump 1
6 Stop level, pump 1 and 2
7 Dry-running level
8
Up/Down buttons:
• Press these buttons to navigate between
submenus or change the value settings.
9OK button:
• Press this button to save changed values.
10
Connect button:
• Press this button to connect the control unit
to Grundfos GO Remote via Bluetooth.
11
Reset button:
• Press this button during startup to reset set-
tings and start over or to reset an alarm or
warning.
Pos. Symbol Description
12
On Off Auto
Operating mode for the pump:
• On: The pump has been switched on man-
ually.
• Off: The pump has been switched off man-
ually.
• Auto: The pump is running automatically
based on settings.
13 Display The display shows the pump status.
14
Setpoint
5.00 bar
Operaring mode
Normal
Actual controlled value
4.90 bar
Control mode
Const. pressure
Status Settings Assist
1 2 3
56789
Lock symbol:
If the symbol is lit, the control unit is locked from
making changes.
15
Alarm and warning symbol:
Red: Alarm
Yellow: Warning
The control unit enables manual setting and monitoring of the
system.
6. Setting the product
Make sure that all settings are entered according to the
pump and system requirements to avoid malfunction.
6.1 Setting the application type with Grundfos GO
Remote
1. Go to Settings > Level control > Application type.
2. Select the type.
•Dewatering
•Fill
Related information
3.3 Startup wizard on the operating panel
4.4 Application types
6.2 Setting the sensor type
6.2.1 Setting the sensor type with Grundfos GO Remote
1. Go to Settings > Level control > Sensor type.
2. Select the type.
•Analog sensors
•Digital sensors
6.2.2 Setting the sensor type with the operating panel
1. Press and hold OK until S-1 or S-2 starts flashing.
2. Select the sensor type using the Up and Down buttons.
•S-1: Analog sensors
•S-2: Digital sensors.
3. Press OK to confirm the setting.
4. Continuously press OK to confirm all other settings and to exit
the setup.
6.3 Setting the start level
6.3.1 Setting the start level with Grundfos GO Remote
The settings apply to analog sensors. For digital sensors, the
setting is automatically activated.
1. Go to Settings > Level control > Start level P1.
2. Set the start level for pump 1.
3. Go to Settings > Level control > Start level P2.
4. Set the start level for pump 2.
6.3.2 Setting the start level with the operating panel
The settings apply to analog sensors. For digital sensors, the
setting is automatically activated.
15
English (GB)

1. Press and hold OK until the display and dry running start
flashing.
2. Continuously press OK until the indicator light for the start level
for pump 1 starts flashing.
TM075197
3. Set the start level for pump 1 by using
the Up and Down buttons.
4. Press OK.
The indicator light for the start level for pump 2 starts flashing.
TM075198
5. Set the start level for pump 2 by using
the Up and Down buttons.
6. Continuously press OK until the display stops flashing.
The settings have now been stored.
6.4 Setting the stop level
6.4.1 Setting the stop level with Grundfos GO Remote
The settings apply to analog sensors. For digital sensors, the
setting is automatically activated.
The stop level is the same for pump 1 and pump 2.
1. Go to Settings > Level control > Stop level
2. Set the stop level.
If you are using the same level for start and stop, re-
member to set a stop delay. This will prevent the pump
from starting and stopping too frequently.
6.4.2 Setting the stop level with the operating panel
The settings apply to analog sensors. For digital sensors, the
setting is automatically activated.
The stop level is the same for pump 1 and pump 2.
1. Press and hold OK until the display starts flashing.
2. Press OK once.
The current stop level is indicated on the display.
3. Set the stop level using the Up and Down buttons.
4. Continuously press OK to confirm all other settings and to exit
the setup.
If you are using the same level for the start and stop
level, remember to set a stop delay. This will prevent
the pump from starting and stopping too frequently.
6.5 Setting the high level
6.5.1 Setting the high level with Grundfos GO Remote
For analog sensors:
1. Go to Settings > Level control > High level.
2. Set the high level.
For digital sensors:
1. Go to > Settings > IO modules
2. Select which terminal to configure.
6.5.2 Setting the high level with the operating panel
The settings apply to analog sensors
1. Press and hold OK until the display starts flashing.
2. Press OK four times. The current high level is indicated on the
display.
3. Set the high level using the Up and Down button.
For digital sensors, enable or disable the setting.
1. Press OK once to complete the setting.
6.6 Stop delay
The stop delay is the time from when the stop level is reached until
the pump stops. The stop delay prevents the pump from starting
and stopping too frequently and reduces water hammer in long
pipes.
6.6.1 Setting the stop delay with Grundfos GO Remote
1. Select Settings > Level control > Stop delay > State
2. Select Stop delay time.
3. Set the Stop delay time.
6.7 Power-on delay
With this function it is possible to delay the startup of the pump after
the power supply has been switched on. The purpose is to avoid
disturbing the main power network which could happen if several
pumps start up immediately when the power supply is switched on.
6.7.1 Setting the power-on delay with Grundfos GO Remote
1. Go to Settings > Power-on delay.
2. Set the function to Enabled.
3. Set the time delay.
6.8 Dry-running protection
If the pump is running and the liquid level in the tank or pit becomes
lower than the dry-running level, the dry-running protection will stop
the pump to ensure that it is not damaged.
Dry-running protection is dependent on a feedback signal from a
level sensor installed in the tank or pit.
6.8.1 Setting the dry-running level with Grundfos GO Remote
1. Go to Settings > Level control > Dry-running level.
2. Set the dry-running level.
The dry-running level must be set to a value which en-
sures that the pump is not damaged due to dry-run-
ning. The specific level depends on the installed pump
type. See the installation and operating instructions for
the product.
6.8.2 Setting the dry-running level with the operating panel
1. Press and hold OK until the display starts flashing.
2. Set the dry-running level using the Up or Down button.
3. Continuously press OK to confirm all other settings and to exit
the setup.
6.9 Multipump settings
The control unit enables start and stop of the two pumps alternately.
The pump with the lowest number of running hours is always
started first. The function ensures that the running hours of the
pumps are the same.
It is possible to set a time delay before the next pump is started.
16
English (GB)

6.9.1 Setting the multipump settings with Grundfos GO Remote
1. Go to Settings > Multi pump settings.
2. Set Inter pump delay.
This is the starting delay between the pumps ensuring that they
do not start at the same time.
3. Set Max number of running pumps.
This is the maximum number of pumps that are allowed to run at
the same time.
4. Set Max run time.
This is the maximum period of time the pump is allowed to run
before it stops.
5. Set Pump pause time.
This is how long the pump must remain paused before it starts
again.
6.10 Using the same level switch for the start and stop
level
1. Set one digital input to Start pump 1 or Stop. All other digital
inputs must be disabled.
2. Set a stop delay.
This will prevent the pump from starting and stopping too
frequently.
6.11 Automatic test run
This function prevents a pump from choking or seizing up as a
result of deposits buildup. The function is used in pits that have had
no inlet flow for a long period. The function ensures that the pump
starts as often as set in Automatic test run > Interval. The pump
operates for the number of seconds set by the user.
6.11.1 Setting the automatic test run function with Grundfos
GO Remote
1. Go to Settings > Automatic test run.
2. Set the function to Enabled.
3. Set the time interval.
4. Set the operating time.
6.12 Setting the limit exceeded function
Use this function to monitor an IO terminal or one of the internal
values, such as power, current or result pulse flow.
If a set limit is reached, a selected action can take place. You can
set two limit exceeded functions, meaning that you can monitor two
parameters or two limits of the same parameter simultaneously.
1. Go to > Settings > Limit 1 exceeded or Limit 2 exceeded.
2. Follow on-screen instructions.
6.13 Signal-detection time
The signal-detection time is the minimum time a level has to be
active before the control unit initiates an action, such as starting or
stopping a pump.
6.13.1 Setting the signal-detection time with Grundfos GO
Remote
1. Go to Settings > Level control > Signal detection time.
2. Set the signal-detection time.
6.14 Setting the maximum number of restarts with
Grundfos GO Remote
If the pump is seized up as a result of deposits buildup, it will be
stopped automatically due to overheating, provided that the motor
protection has been set. When the motor has cooled down, the
control unit will unsuccessfully try to restart the pump and this
scenario will be repeated.
In order to prevent this, it is possible to set a maximum number of
restart attempts within a set interval.
1. Go to Settings > Max number of restarts.
2. Enable the function.
3. Set the interval within which the allowed number of restarts are
to be counted.
4. Set the maximum number of pump restarts which are allowed
during the set interval.
Related information
6.17.1 Overheat protection
6.17.2 Overload protection
6.17 Motor protection
8.4 Code 4 (Too many motor restarts)
6.15 Setting the service interval with Grundfos GO
Remote
You can set a time in Grundfos GO Remote in order to get a
reminder that the pump needs service when the time comes.
1. Go to Settings > Service > State
2. Select Enable and press OK.
3. Select the pump.
4. Enter the number of hours until next service and press OK.
6.16 Operating the product
6.16.1 Automatic operation
In automatic operating mode, the control unit starts and stops the
pump based on the signals it receives from the connected level
sensors and the corresponding level settings within the control unit.
Related information
4.4 Application types
6.16.2 Manual operation
6.16.2.1 Starting and stopping the pump manually with
Grundfos GO Remote
1. Go to Settings > Control, pump 1 or Control, pump 2.
2. Start the pump by selecting On and pressing OK.
3. Stop the pump by selecting Off and pressing OK.
Related information
6.16.2.3 Choosing what the pump must do after manual start
6.16.2.2 Starting and stopping the pump manually with the
operating panel
1. To start a pump manually, press and hold the Pump button until
the pump starts.
The On indicator light is lit when the pump is operating in
manual mode.
2. Stop the pump by pressing the Pump button.
The Off indicator light is lit when the pump is stopped.
Related information
6.16.2.3 Choosing what the pump must do after manual start
6.16.2.3 Choosing what the pump must do after manual start
The following can be configured:
•Automatic return
Here you select if the pump must automatically return to a
defined operating mode when the manual start ends.
•Return to
Here you select whether the pump must return to automatic
operating mode or stop when the manual start ends and
Automatic return has been enabled.
•Forced start time
Here you set the time period in which the pump must run in
manual operating mode.
1. Go to Settings > Manual start.
2. Select Automatic return and choose one of the following
options:
•Disabled
•Enabled.
17
English (GB)

3. Go one step back in the menu and select Return to.
4. Choose one of the following options:
•Auto
•Off.
5. Go one step back in the menu and select Forced start time.
6. Set the time period in which the pump must run in manual
operating mode.
Related information
6.16.2.1 Starting and stopping the pump manually with Grundfos
GO Remote
6.16.2.2 Starting and stopping the pump manually with the
operating panel
6.17 Motor protection
Make sure that all settings are entered according to the
pump and system requirements to avoid malfunction.
Related information
6.14 Setting the maximum number of restarts with Grundfos GO
Remote
8.13 Code 69 (Winding temperature too high)
6.17.1 Overheat protection
The control unit offers thermal protection for the connected motors.
Two types of thermal-protection sensor can be connected to the
control unit: a PTC sensor (analog) and a thermal switch (digital).
Under normal running conditions, the sensor will act as a short
circuit, but when its temperature limit is reached, it will open and tell
the control unit that the temperature is too high, and the pump is
stopped. When the temperature has dropped to the sensor-trigger
level, the pump will return to normal running conditions. It will not be
possible to start the pump manually as long as the temperature is
too high.
Related information
6.14 Setting the maximum number of restarts with Grundfos GO
Remote
6.17.2 Overload protection
The pump is protected by a motor-protection relay. The nominal
current draw must be set manually on the motor-protection relay.
See the specific documentation for the relay on how to set the
trigger level. If the current exceeds the trigger level, the relay will
switch off the pump and the controller will give an alarm. The alarm
has to be manually reset directly on the motor protection relay.
Related information
6.14 Setting the maximum number of restarts with Grundfos GO
Remote
6.17.3 Moisture protection
When a moisture sensor is installed in series with the temperature
sensor, the control unit needs to know how to determine whether
there is a high temperature or moisture in the pump. If the
temperature is too high, normally the temperature sensor will go
back to its normal stage when the temperature has dropped to its
trigger level. If there is moisture in the pump, then the moisture
sensor will keep the series connection open until the pump is
opened and serviced.
To determine which sensor has been active, a cool down
time must be entered. This is the time that will normally pass until
the temperature has dropped enough for the temperature sensor to
return to its normal stage. If the cool down time is exceeded, the
control unit will assume that there is moisture in the pump, and it
will send a moisture alarm.
6.18 Alarm reset
6.18.1 Resetting alarms and warnings manually with Grundfos
GO Remote
1. Go to Alarms and warnings.
2. Press Reset alarm.
All current alarms and warnings have been reset. However, if
the fault causing the alarm or warning has not been removed,
the alarm or warning will appear again.
3. If you want to delete all alarms and warnings from the history
log, press Show log > Reset alarm and warning logs.
6.18.2 Setting the automatic alarm reset with Grundfos GO
Remote
1. Go to Settings > Automatic alarm reset.
2. Select one of the following:
No automatic reset
The control unit does not reset
any alarm or warning. You
must do it manually.
All except pump critical
The control unit resets alarms
and warnings unless the rela-
ted fault can damage the
pump.
All alarms
The control unit resets alarms
and warnings, regardless of
the fault.
6.18.3 Resetting alarms and warnings on the operating panel
You can manually reset alarms and warnings on the operating
panel. However, if the fault causing the alarm or warning has not
been removed, the alarm or warning will appear again.
1. Press Reset on the operating panel to reset the alarm or
warning.
6.19 Setting the buzzer with Grundfos GO Remote
The internal buzzer is used to give an acoustic sound if there is a
warning or an alarm.
1. Go to Settings > Buzzer settings.
2. Select when the buzzer is to be activated:
•All alarms
•All alarms and warnings.
6.20 Setting units for Grundfos GO Remote
Changing units as described here will only change the units shown
in Grundfos GO Remote. It will not affect the units shown on the
operating panel of products connected to Grundfos GO Remote.
18
English (GB)

1. Press the Menu button in the upper left corner of Grundfos GO
Remote.
TM075508
2. Go to General > Settings > Products > Units.
3. Select US or Grundfos default units.
6.21 Setting units for the operating panel with Grundfos
GO Remote
Changing units as described below changes the units shown in the
operating panel of the product connected to Grundfos GO Remote.
It does not affect the units shown in Grundfos GO Remote.
1. Go to Settings > Display units.
2. Select the units to be used on the operating panel.
•SI Units
•US Units.
6.22 Setting the user-configurable log with Grundfos GO
Remote
The user-configurable log function is used for logging the
configured parameters you have set in Grundfos GO Remote.
1. Go to Settings > User configurable logs.
2. Follow on-screen instructions.
Saved logs can be found in the Status menu.
6.23 Setting a time schedule with Grundfos GO Remote
The pump can start within a scheduled interval. It does not start
unless certain start conditions are active. For example if P1 start is
active and high level is active. The schedule is based on a weekly
calendar with clocked-time event intervals.
1. Go to Scheduling.
2. Follow on-screen instructions.
Related information
8.7 Code 17 (Low system performance)
6.24 GENIbus
GENIbus, the Grundfos Electronics Network Intercommunications
bus, is a fieldbus developed by Grundfos to meet the need for data
transfer in all typical Grundfos motor or pump applications.
Grundfos devices with GENIbus can be wired together in networks
and integrated in automation systems. Each device on the network
must have a unique GENIbus address. GENIbus is based on the
RS485 hardware standard and typically operates at a baud rate of
9600 bits/s.
6.24.1 Setting the GENIbus address with Grundfos GO Remote
1. Go to Settings > GENI bus address.
2. Set the GENIbus address.
The GENIbus address is a unique identifier for the product on
the network.
6.25 Security
6.25.1 Locking the operating panel
The operating panel can only be locked with Grundfos GO Remote.
1. Go to Settings > Security > Lock Display.
2. Enable the setting and press Done.
3. Select if you want to restrict access to Settings
only or Settings and operation.
4. Press Done.
The lock symbol on the operating panel is now lit.
6.25.2 Unlocking the operating panel
The operating panel can only be unlocked with Grundfos GO
Remote.
1. Go to Settings > Security > Lock Display.
2. Disable the setting and press Done.
The lock symbol on the operating panel is switched off.
6.25.3 Locking Grundfos GO Remote
1. Go to Settings > Security > Lock GO Remote.
2. Enable the setting and press Done.
3. Enter a four digit PIN code and press CONFIRM.
A lock symbol indicates which menus are locked. To view or change
settings, you must enter the PIN code.
6.25.4 Unlocking Grundfos GO Remote
1. Go to Settings > Security.
2. Enter the four digit PIN code.
3. Select Lock GO Remote.
4. Disable the setting and press Done.
All menus in Grundfos GO Remote are unlocked.
6.26 Starting the startup wizard with the operating panel
• Press and hold the OK button for 5 seconds
until S-1 or S-2 starts flashing.
Related information
3.3 Startup wizard on the operating panel
7. Servicing the product
WARNING
Electric shock
Death or serious personal injury
‐Switch off the incoming power supply before you start
any work on the product or connected pumps.
‐Make sure that the power supply cannot be switched
on accidentally.
7.1 Updating the product software
New features and functions can be made available during the
product's life cycle.
19
English (GB)

1. Contact Grundfos to get your product software updated.
7.2 Replacing the battery
CAUTION
Fire and chemical leakage
Minor or moderate personal injury
‐Risk of explosion if the battery is replaced by an incor-
rect type.
To replace the battery, do the following:
1. Gently grab around the battery without touching it too much.
2. Pull the battery up.
3. Insert a new battery of the correct type.
Related information
9.3 Environmental data
7.3 Replacing the control unit
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before making any electri-
cal connections.
‐Make sure that the power supply cannot be switched
on accidentally.
Remember to save the controller's settings in Grundfos GO Remote
under Settings. The settings can then be transferred to the new
control unit when installed.
1. Switch off the power supply to the product and
other components with external supply.
2. Write down the terminal connection of each wire to ensure
correct re-connection.
3. Disconnect all wires.
4. Remove the control unit from the panel or cabinet.
5. Fit the new unit.
6. Connect all wires.
7. Configure the new control unit using Grundfos GO Remote.
7.4 Replacing the CIM module
WARNING
Electric shock
Death or serious personal injury
‐Switch off the power supply before making any electri-
cal connections.
‐Make sure that the power supply cannot be switched
on accidentally.
1. Switch off the power supply to the product and
other components with external supply.
2. Write down the terminal connection of each wire to ensure
correct re-connection.
3. Disconnect all wires connected to the CIM module.
4. Remove the screws that holds the module.
5. Remove the module from the control unit.
6. Fit the new module.
7. Connect all wires.
7.5 Replacing the fuse
DANGER
Electric shock
Death or serious personal injury
‐Switch off the power supply before making any electri-
cal connections.
‐Make sure that the power supply cannot be switched
on accidentally.
1
TM072483
1. Open the tap (1).
2. Remove the fuse.
3. Insert the new fuse.
4. Close the tap (1).
Related information
9.1 Electrical data
20
English (GB)