LLC 1000W
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
2
LLC 1000W
English (GB)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dansk (DK)
Monterings- og driftsinstruktion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Deutsch (DE)
Montage- und Betriebsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table of contents
3
English (GB) Installation and operating instructions
Caution
Note
English (GB)
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document
2. Applications
3. Product description
3.1 General construction
3.2 Description of function
3.3 Technical data
4. Transport and storage
5. Installation
5.1 Mechanical installation
5.2 Electrical installation
6. Startup
7. Operation
8. Taking the product out of operation
9. Maintenance
10. Fault finding
11. Service, spare parts, accessories
12. Disposal
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.
Warning
This product can be used by children
of eight years and up and persons with
reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they are under
supervision or have been instructed in
the safe use of the product and
understand the hazards involved.
Children must not play with the
product. Cleaning and maintenance of
the product must not be made by
children without supervision.
1. Symbols used in this document
Warning
If these safety instructions are not
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2. Applications
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The level controller described in these installation
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and operating instructions is used for
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level-dependent on/off switching of grey wastewater
pumps. The level controller is primarily used where
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the levels of conductive, non-flammable liquids in
tanks or pits must be strictly maintained, or where
these liquids require very shallow pumping.
observed, it may result in personal
injury.
Warning
If these instructions are not observed,
it may lead to electric shock with
consequent risk of serious personal
injury or death.
If these safety instructions are not
observed, it may result in malfunction
or damage to the equipment.
Notes or instructions that make the job
easier and ensure safe operation.
Warning
The level controller must only be used
for the applications mentioned in this
manual. Other applications are
considered as non-approved. No
liability is accepted for resulting
damages. The risk is borne solely by
the operator.
Warning
Use in explosion protection zones is
not permitted.
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3. Product description
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3.1 General construction
The level controller consists of four stainless steel
rod electrodes (pos. 1) (300, 600 or 1000 mm long)
in an electrode bracket (pos. 2), a mounting bracket
(pos. 3), 10 m cable (pos. 4), a plug-in control box
(pos. 5) and a 1 1/4" barrel nipple (pos. 6) for fixing
the sheet steel angle to the discharge port of
UNILIFT KP. See fig. 1.
The control box houses the evaluation electronics, a
safety plug and a Schuko outlet for connection to the
pump.
The control box houses the evaluation electronics, a
safety plug and a Schuko outlet for connection to the
pump.
Fig. 1 LLC 1000W level controller
Fig. 2 Terminal diagram
Contact assignment, terminal block X1
1 Emptying function (L)
2 Filling function (N)
3 Protective earth conductor
4 Plug (L)
5 Plug (N)
Contact assignment, terminal block X2
1 Long electrode (yellow/green)
TM05 3939 1812
2 Short electrode (blue)
3 Medium electrode (brown)
4 Alarm electrode (black)
5 Alarm contact, potential-free
6 Alarm contact, potential-free
English (GB)
TM05 3940 1812
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3.2 Description of function
English (GB)
The voltage between the electrodes is approximately
12 V DC, and the operating voltage for the pump
connection is 1 x 230 V. The four electrode rods
extend into the liquid to be pumped at differing
lengths. The longest electrode functions as a frame
electrode; the second-longest is the stop electrode,
followed by the start electrode, the shortest electrode
being the alarm electrode.
The level controller is factory-set to emptying
function. If the liquid level rises to the start electrode,
the controller switches on the pump. If the liquid level
falls below the stop electrode, the controller switches
the pump off. If the liquid reaches the alarm
electrode, a potential-free contact in the control box
closes, and the built-in buzzer will sound. The
additional potential-free changeover contact is
provided for special applications and can also be
used for an external alarm. The position of the
contacts (spring terminals) on the guide plate in the
control box is shown in fig. 2.
The function can be reversed by moving the cable
from connector X1-1 to connector X1-2, so that the
connected device turns on when the stop electrode
is reached, and turns off when the start electrode is
reached (filling function). The alarm is then triggered
when the tank to be filled is overfilled.
After installation, the level controller functions
automatically. Settings on the device must not be
adjusted.
3.3 Technical data
Designation LLC 1000W
Supply voltage: 1 x 230 V, 50 Hz, N, PE
Rated current Max. 6.0 A
Power 1000 W
Enclosure class, control
box
Enclosure class,
electrode bracket
Contact load, high-level
alarm, potential-free
Cable length 10 m
EMC noise emission
EMC noise immunity
Max. liquid temperature 55 °C
Ambient temperature 0-40 °C
Country of origin Germany
Materials
Component Material
Electrodes Stainless steel
Electrode bracket Plastic
Cable sheath Rubber
Plug housing Plastic
IP20
IP68
Max. 2 A, max. 230 V
According to EN
61000-6-3
According to EN
61000-6-2
4. Transport and storage
The level controller is delivered in appropriate
packaging and should remain packed until
installation.
The controller must be stored in a dry, cool, frost-free
space. The controller must not be exposed to direct
sunlight.
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5. Installation
Note
Rod electrodes
Caution
Warning
Installation and operation in a
potentially explosive environment are
not permissible.
Make sure that the power supply
cannot be accidentally switched on
during installation. We recommend that
you unplug the control box from the
socket.
The electronic connections on the
control box must not be exposed to
moisture.
5.1 Mechanical installation
5.1.1 Mounting bracket
Attach the bracket using the two screws on the
electrode bracket. See fig. 3.
The long side must face upwards.
Fig. 3 Place the mounting bracket on the
5.1.2 Electrode bracket
The electrode bracket can either be attached directly
to the pump or to a tank wall.
The level controller can be used for Grundfos pump
types Unilift CC and Unilift KP.
The length of the electrodes must be adjusted to the
length of the pump. The difference in length between
the start and stop electrodes corresponds to the
switching differential.
electrode bracket
The control electrodes must not come
into contact with the pump or the walls
of the pump pit. The frame electrode
must be the longest electrode and may
touch the bottom.
Make sure that the pump stop point as
specified by the electrode length is
safely reached.
Make sure that the pump stop point as
specified by the electrode length is
safely reached.
It may be necessary to shorten the stop electrode. If
the electrodes are to be trimmed to change the
switching points, cut the protective tube at the
bottom end of the electrodes by approximately 5 mm
after trimming. Tighten the rod electrodes gently with
pliers prior to startup in order to prevent them from
coming loose during pump operation.
Assembly on the pump
Push the electrode bracket onto the pump pressure
outlet using the mounting bracket, so that the
electrodes face down. Then connect the electrode
bracket to the discharge port of the UNILIFT KP
using the 3-stage pressure outlet of the UNILIFT CC
supplied with the pump or using the attached 1 1/4"
barrel nipple.
5.2 Electrical installation
Warning
Connection work must be carried out
by authorised staff.
The level controller is now ready for connection.
Electrical connection work on the device itself is not
necessary if the pump is equipped with a plug.
If electrical connection work is required in order to
use certain functions or to connect the power supply
for the pump and the mains directly to the control
box, and thus not use the sockets, detach the rear
wall of the control box.
TM05 3941 1812
If the potential-free alarm contact is to be used to
forward the alarm signal to a main controller, connect
the signal cable to terminal block X2, terminals 3 and
4.
If the filling function is to be used instead of the
emptying function, move the lead from terminal X1-1
to terminal X1-2.
Warning
Make sure that the power supply
cannot be accidentally switched on
during electrical installation. We
recommend that you unplug the control
box from the socket.
English (GB)
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6. Startup
Note
English (GB)
Trim the electrodes to the desired
length in advance, depending on the
pump. Take into account the
technically feasible switching levels of
the pump.
After installation, plug the control box into a socket
and plug the pump plug into the control box socket.
Carry out test runs. To do so, press and hold the
switch on the control box. The level controller will not
operate when the switch is actuated. The pump runs
for as long as the button is held.
If you encounter faults during test operation, verify
that the power supply is correct, that the connected
units function properly, and that the liquid has
sufficient conductivity. See section 10. Fault finding
for more details.
If the switch on the control box is not pressed, the
level controller operates automatically.
Change over from the emptying function (delivery
state) to the filling function is described in section
5.2 Electrical installati on.
7. Operation
Once the level controller has been installed and
started up, no further action is required.
The level controller operates automatically and
switches the connected wastewater pumps on and
off based on the liquid level.
For a trial run or to briefly switch the pump on and off
during commissioning or service work, the pump can
be manually operated by pushing the switch on the
control box. See also section 6. Startup.
9. Maintenance
The level controller is maintenance-free. However,
the electrode tips must be cleaned at regular
intervals to remove any deposits that could
otherwise lead to malfunctions. The maintenance
intervals to be observed depend on the operating
conditions and the liquid pumped.
Warning
Before starting work on the product,
switch off the power supply. Make sure
that the power supply cannot be
accidentally switched on. We
recommend that you unplug the control
box from the socket.
8. Taking the product out of operation
1. Disconnect the control box from the power
supply, for instance by unplugging the control box
from the socket.
2. Unplug the pump from the pump control box, or
remove the cables from the terminals in the event
of direct connection to the pump.
3. Remove the electrode bracket from the pump.
4. Carefully wash the electrodes with clean water.
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10. Fault finding
Note
Warning
Before starting work on the product, switch off the power supply. Make sure that the power
supply cannot be accidentally switched on. We recommend that you unplug the control box
from the socket.
Fault Possible cause Remedy
1. The pump does
not start.
2. The pump does
not stop.
3. Pump starts
and stops in
wrong order.
a) No power supply, or incorrect
power supply.
b) Incorrect electrical connection. Check the electrical connection and correct
c) Defective cable. Check the cable. Contact Grundfos Service
d) The motor protection of the pump
has tripped due to overheating,
blockage, voltage fault or other
pump fault.
e) Fuse in control box has blown. Replace fuse (fine-wire slow-blow fuse 8 A).
f) Controller fault or defective
electronics.
g) Electrodes contaminated. Clean the electrodes.
h) Pump defective. Replace the pump.
a) Button on the control box is stuck. Loosen the button.
b) Controller fault. Contact Grundfos Service.
c) Stop electrode too long. Trim the stop electrode. Note the minimum
a) Incorrect switching function
selected.
Check the power supply.
as needed.
in the event of a defective cable.
For actions to take when motor protection on
the pump has tripped, see the installation
and operating instructions for the pump.
If the fuse blows again immediately, identify
and remedy the cause.
Contact Grundfos Service.
possible stop point of the pump.
Move cable on terminal block X1 from
terminal 1 to terminal 2 or vice versa.
English (GB)
11. Service, spare parts, accessories
Spare parts and accessories not
supplied by Grundfos will not be
inspected or approved by Grundfos.
The use of non-authorised spare parts and
accessories voids any Grundfos warranty liability for
consequential damage.
Any malfunctions which cannot be repaired must
only be corrected by Grundfos or authorised
specialist companies.
Please provide an exact description in the event of a
malfunction to allow our service technician to
prepare and provide the appropriate spare parts.
12. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
Subject to alterations.
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