Grundfos DUOLIFT Series User manual

UNOLIFT, DUOLIFT
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

2

English (GB)
3
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions
describe Grundfos Unolift and Duolift lifting stations.
They apply to the tank and installation kits. For
detailed information on installing and operating the
pumps and controller, see the installation and
operating instructions supplied with these products.
Sections 1-6 give the information necessary to be
able to unpack, install and start up the product in a
safe way.
Sections 7-16 give important information about the
product, as well as information on service, fault
finding and disposal of the product.
CONTENTS
Page
1. General information
1.1 Symbols used in this document
1.2 Symbols on the product
2. Receiving the product
2.1 Transporting the product
1. General information 3
1.1 Symbols used in this document 3
1.2 Symbols on the product 3
2. Receiving the product 3
2.1 Transporting the product 3
2.2 Inspecting the product 4
2.3 Scope of delivery 4
3. Installing the product 6
3.1 General guidelines 6
3.2 Choice of tank inlets 6
3.3 Location 6
3.4 Tools 8
3.5 Installation overview 8
3.6 Positioning the product 8
3.7 Installing the tank 8
3.8 Drilling holes in the tank 8
3.9 Fitting the cable glands 9
3.10 Fitting the air vent 9
3.11 Fitting the venting pipe 9
3.12 Connecting the inlet pipes 9
3.13 Installing the pump in the tank 10
3.14 Inner connecting pipes 10
3.15 Installing the level sensor tube 13
3.16 Installing an alarm float switch 13
3.17 Assembling the discharge pipes 13
3.18 Installing a diaphragm pump 15
3.19 Installing the controller 15
3.20 Electrical connection 15
3.21 Setting the controller before start-up 15
4. Starting up the product 16
5. Monitor the increasing liquid level in the
tank up to the start level and check that
the pumps start and stop at least twice. 16
4.3 Storing the product 16
4.4 Storing the product 16
5. Product introduction 17
5.1 Product overview 17
5.2 Applications 17
5.3 Pumped liquids 17
5.4 Automatic operation 17
5.5 Identification 18
5.6 Diaphragm pump 18
5.7 Level sensor tube 18
6. Operating the product 19
6.1 Setting the start levels 19
7. Starting up the product after standstill 21
8. Servicing the product 21
9. Taking the product out of operation 21
10. Technical data 22
10.1 Operating conditions 22
10.2 Material 22
10.3 Electrical data 22
10.4 Dimensions and weights 22
11. Fault finding the product 23
12. Disposing of the product 25
Prior to installation, read this document.
Installation and operation must comply
with local regulations and accepted codes
of good practice.
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.
European Conformity
WARNING
Falling objects
• Death or serious personal injury
• Secure the product during
transportation to prevent it from tilting
or falling down.

English (GB)
4
2.2 Inspecting the product
1. Check that the product is as ordered.
2. Check that no visible parts have been damaged.
3. If parts are damaged or missing, contact your
local Grundfos sales company and refer to the
product numbers in section 2.3 Scope of delivery.
2.3 Scope of delivery
The scope of delivery depends on your order.
Pumps, tank and pipework are delivered separately
and are to be assembled.
Description of kits
CAUTION
Back injury
• Minor or moderate personal injury
• Get assistance from another person or
use lifting equipment to carry the
product.
CAUTION
Crushing of feet
• Minor or moderate personal injury
• Wear safety shoes when moving the
product.
Tank
Designation
Quantity
270 litres
tank
540 litres
tank
Tank 1 1
Cover with gasket 1 2
Screw, M8 x 30 12 24
Washer 12 24
Fastening brackets for
level sensor tube 22
Screws for fixing tank 4 4
Plugs for fixing tank 4 4
Socket seal, DN 40 1 1
Socket seal, DN 100 1 1
Inner connection pipes
Designation
Quantity
KP/
CC SEG APB
Adaptor Rp 2 -
R 1 1/2 11-
Double socket
R 2 - R 2 111
Nut, PVC, 2" 1 1 1
O-Ring Ø60,
EPDM --1
Nozzle adaptor,
F222
Clamp,
stainless steel 222
Flexible
connecting
piece ∅50
111
Elbow 90° - 1 1
Flange ∅50 - 1 -
Screw,
for flange -4-
Washer,
for flange -8-
Inner connection pipes
Designation
Quantity
KP/
CC SEG APB

English (GB)
5
Accessories
The following components are not part of the tank
delivery. They are recommended accessories which
must be ordered separately.
* The Unilift CC and KP pumps are delivered with
non-return clap valves.
Nut, M16,
for flange -4-
O-ring ∅50,
for flange -1-
Adaptor, KP
M1"1/2-M1"1/4 1--
Adaptor, CC
M1"1/2-F1"1/4 1--
Thread tape,
PTFE 111
Venting port
Sleeve, PVC
75 x 63 x 2" 111
Flat gasket,
EPDM ∅63 111
Nut, PVC 2" 1 1 1
Other
Power plug
SCHUKO 1-1
Cable gland,
M20 212
Cable gland,
M25 -1-
Inner connection pipes
Designation
Quantity
KP/
CC SEG APB
Discharge pipe
Designation
Quantity
Uno-lift Duolift
CC/
KP
APB/
SEG
CC/
KP
APB/
SEG
Non-
return
valve
-* 1 -* 2
Double
socket -135
Isolating
valve 1111
Fitting
union --22
T-part,
PVC 90° --11
Elbow,
PVC 90° --22
Pipe,
∅50,
2 m
--11
Thread
tape 1111
Glue,
PVC-U --
125
g
125
g

English (GB)
6
3. Installing the product
3.1 General guidelines
Guidelines for correct mechanical installation of
lifting station are according to EN 12056-4.
• If the lifting station is installed in a basement with
regular penetrating groundwater, we recommend
to install a drainage pump in a separate pump
sump below floor level (mandatory in certain
countries). If there is only a risk of penetrating
groundwater, we recommend to install a float
switch outside the lifting station and to connect it
a controller, which will indicate an high level
alarm in case of flooding.
• The collecting tank must be fixed to the floor.
• We recommend that you connect a diaphragm
pump to the collecting tank in order to be able to
empty the tank manually.
• All outlet pipes from the lifting station, diaphragm
pump and drainage pump must have a backwater
loop, i.e. a bend above the local backwater level.
Commonly, the highest point of the bend must be
above street level. See fig. 2.
• Surface water must not be discharged into the
lifting station inside the building. It must be
collected and discharged outside the building.
• A non-return valve must be installed at the
discharge of the lifting station to prevent back
flow from the sewer for example.
• Install isolating valves at the inlet and outlet of
the lifting station.
• The volume of the outlet pipe above the non-
return valve up to the backwater loop (bend in the
pipe) must be smaller than the effective tank
volume.
• In general, a lifting station for black wastewater
must be vented above roof level. However, it is
permitted to lead the ventilation into the main
building ventilation system. Special two-way
venting valves must be placed outside the
building.
• If the wastewater is discharged into a collecting
line, the collecting line must have a filling ratio of
at least h/d = 0.7. The collecting line must be at
least one nominal diameter bigger after the outlet
pipe connection.
• 45 degrees bends must be used to avoid
sedimentation in pipework.
3.2 Choice of tank inlets
It is optimal to lead your pipework to the top inlets of
the tank, as it will prevent backflow and
sedimentation in the inlet pipe and give you the
possibility to use a high start level for the pump. A
high start level increases the effective tank volume
and decreases the numbers of start/stop of the
pumps.
If you use the bottom inlet, you have to select the
lowest start level. If the start level is above the inlet
height, there will be backflow in the inlet pipe. thus
increasing the risk of sedimentation in the pipework.
3.3 Location
The lifting station must be installed in a properly lit
and vented room with 60 cm free space around all
parts to be serviced and operated.
The tank must not be exposed to direct sunlight. UV
can affect the properties of its composite material,
resulting in a shorter life.
The product is designed for indoor operation. If
installed outside, it must be placed in a closed pit.
The tank can be flooded and may be installed in a
basement with risk of penetrating groundwater.

English (GB)
7
Fig. 1 Installation example with tank in a pit and with a controller. The diaphragm pump is not shown.
Fig. 2 Installation example with tank directly mounted on basement floor (the diaphragm pump is not
shown)
TM065789 0216
Pos. Description
1 Isolating valve, inlet
2 Controller
3 Drainage pump
4Non-return valve,
discharge
5Isolating valve,
discharge
6 Venting pipe
6
2
3
4
5
1
TM065790 0216
Pos. Description
1 Isolating valve, inlet
3 Drainage pump
4Non-return valve,
discharge
5Isolating valve,
discharge
6 Venting pipe
16
3
4
5

English (GB)
8
3.4 Tools
• Thread tape
•Glue
Not delivered with the product:
• Drilling machine
• Drilling bits: Ø6, Ø16, Ø25
• Cup saw: Ø40, Ø100
• Deburring tool for polyethylene
3.5 Installation overview
Depending on your product type, you must go
through different steps in order to install and setup
your system. The steps below are necessary steps in
order to start your system. You may need to go
through extra steps if you have additional
accessories.
Unolift/Duolift with pumps with float switches
1. Fix tank to the floor
2. Drill holes for inlet pipes
3. Connect inlets to tank
4. Fit venting port and cable glands
5. Adjust length of float switch cable to set start
levels
6. Install pumps inside tank
7. Fit inner connecting pipe
8. Fit venting pipe
9. Fit discharge pipes
Unolift/Duolift with controller and level sensor
tube
1. Fix tank to the floor
2. Drill holes for inlet pipes
3. Connect inlets to tank
4. Fit venting port and cable glands
5. Install pumps inside tank
6. Install sensor tube inside tank
7. Fit inner connecting pipes
8. Fit venting pipe
9. Fit discharge pipes
3.6 Positioning the product
Position the tank so that all components are easily
accessible during operation and maintenance.
3.7 Installing the tank
Fix the tank to the floor to prevent uplift and twist.
Use the mounting brackets to fix the tank with
screws.
3.8 Drilling holes in the tank
Depending on the size, the the tank has three to four
pre-moulded holes ∅100 for the inlet pipes. The
tank also has a pre-mouled hole ∅40 for the
diaphragm pump. See section 5.1 Product overview.
These holes must be cut opened in order to be used.
Holes for discharge pipes, venting pipe and minimum
required cable glands are already opened.
The minimum required cable glands depend on the
model:
• Unolift, APB, CC, KP: one hole opened for pump
cable
• Unolift SEG: two holes opened for pump cable
and sensor hose
• All Duolifts: three holes opened for pump cables
(2) and sensor hose (1)
3.8.1 Drilling holes for pipes
1. Determine which inlets you want to use.
See “Choice of tank inlets” on page 6.
2. Drill holes with a cup saw.
The diameter of the cup saw must be the same
as the diameter of the pipe.
Inlet: Ø100
Outlet, pipe for diaphragm pump:Ø40
3. Deburr the holes.
Fig. 3 Drilling holes for pipes
CAUTION
Back injury
• Minor or moderate personal injury
• Get assistance from another person or
use lifting equipment to carry the
product.
CAUTION
Crushing of feet
• Minor or moderate personal injury
• Wear safety shoes when moving the
product.
TM065780 0116
CAUTION
Sharp element
• Minor or moderate personal injury
• Wear protective gloves.
TM065851 0216

English (GB)
9
3.8.2 Drilling holes for cable glands
1. Determine where to lead the pressure hose from
the level sensor tube and cable from the alarm
float switch, if any.
2. Drill holes.
Pressure hose: Ø20
Alarm float switch cable:Ø25
3. Deburr the holes.
3.9 Fitting the cable glands
Choose the appropriate cable gland for the
application:
Cable gland for Unilift cable: M20
Cable gland for level sensor hose: M20
Cable gland for SEG cable: M25
Cable gland for alarm switch: M20
Fig. 4 Fixing the cable glands
3.10 Fitting the air vent
1. Fit the seal on the sleeve.
2. Fit the sleeve in the hole for the air vent. The air
vent is located on top of the tank.
3. Fit the nut from inside the tank and tighten it.
Fig. 5 Fitting the air vent
3.11 Fitting the venting pipe
You can connect your venting pipes to the air vent in
three different ways.
• By means of a PVC venting pipe with an outer
diameter of 63 mm and the glue delivered with
the product.
• By means of a flexible pipe connection with an
inner diameter of 75 mm and with clamps.
A flexible pipe connection with clamps is
available as an accessory.
• By means of a PP double socket with an inner
diameter of 75 mm. The socket must comply with
EN 1451.
3.12 Connecting the inlet pipes
You can connect up to three or four inlet pipes to the
tank, depending on the size of the tank. First you
must cut the holes open. See section 3.8 Drilling
holes in the tank.
1. Fit the socket seal in the inlet.
2. Connect the isolating valve to the inlet pipe.
The isolating valve is an accessory and is not
part of the tank delivery.
3. Insert the inlet pipe into the socket seal.
Fig. 6 Fitting an inlet pipe with an isolating
valve (type gate)
The isolating gate valve can be ordered as
accessory. Use product number 96615831.
TM065779 0116TM065924 0316
Note
The venting pipe is not delivered with the
product
TM065859 0216

English (GB)
10
3.13 Installing the pump in the tank
Pumps with float switches: before installing the
pump, make sure that you have set the length of the
float switch. See “Installing the pump in the tank” on
page 10.
1. Remove the plug from the power cable of the
pump. You may need to cut the cable.
2. Position the pump in the tank.
If the pump has a float switch, make sure it can
move freely.
Unilift CC, KP, APB: Position the pump between
the three positioning dots at the bottom of the
tank so that it stays in place during operation.
See figures 7 and 8.
SEG: The pump weight ensures that the pump
stays in place.
3. Lead the supply cable through the cable gland of
the tank.
4. Tighten the cable gland.
Fig. 7 Correct position of Unilift CC and KP
pumps
Fig. 8 Correct position of Unilift APB pumps
3.14 Inner connecting pipes
3.14.1 Cutting the flexible connecting piece
The inner connecting pipe is delivered with a flexible
connection piece Ø50. You need to cut it to a specific
size, which depends on the pump type. Use the
dimensions in the table below:
3.14.2 Assembling the inner pipes
Use the thread tape delivered with the assembly kit
to seal the threads.
1. Assemble all the parts of the connecting pipe
outside the tank, except for the outlet connecting
piece. See pos. 1 in fig. 9.
2. Fit the connecting pipe to the pump in the tank.
3. Fit the outlet connecting piece to the discharge
port of the tank. Make sure that the pump is in
position and that the float switch, if any, can
move freely, before you tighten the outlet
connecting piece.
Fig. 9 Example with Unilift KP pumps
TM065965 0316TM065966 0316
Pump type
Delivered
size
[mm]
Cut to size
[mm]
Unilift CC
350
240
Unilift KP 350
(no cut)
Unilift APB 500 423
SEG 375
TM04 9563 2014
1

English (GB)
11
Fig. 10 Unilift CC, KP
TM0 59630 3913

English (GB)
12
TM0 59633 3913 TM0 59632 3913
Fig. 11 Unilift AP35B, AP50B Fig. 12 SEG
x4

English (GB)
13
3.15 Installing the level sensor tube
If your pump is not equipped with a float switch, you
must install a level sensor tube in the tank.
1. Fix the level sensor tube to the clamps inside the
tank.
The locking ring of the tube must be under the
top clamp to prevent the pipe from rising with the
water level.
2. Lead the level sensor hose through the cable
gland.
3. Tighten the cable gland.
Fig. 13 Correct positioning of the level sensor
tube
3.16 Installing an alarm float switch
If you have an alarm device, you can install an
additional float switch inside the tank and connect it
to the alarm device in order to trigger a high level
alarm.
If you have a controller LC 220 or LC 221, you do not
need an additional alarm float switch as the high
level alarm is triggered by the level sensor.
1. Use a strip to attach the cable of the float switch
to the inner connecting pipe.
• Make sure that there is a free cable length of
minimum 70 mm.
• Make sure that the float switch can move freely
from its lowest position to its highest position.
2. Tighten strip.
3. Lead the cable through the cable gland.
4. Tighten the cable gland.
Fig. 14
3.17 Assembling the discharge pipes
The discharge pipes described in this section are
accessories.
3.17.1 Cutting the pipe (Duolift only)
The discharge pipe kit is delivered with a 2 meter
pipe ∅50. You need to cut it into 2 pieces of a
specific size, which depends on the Duolift model
and the pump type. Use the dimensions in the table
below:
3.17.2 Assembling
Assemble the discharge pipes according to the
drawing below.
Tip for Duolift:
1. Assemble the whole discharge pipe before
connecting anything to the tank.
2. Connect the assembled discharge pipe to the
tank by tightening the two fitting unions onto the
tank outlets. See pos. 3.
TM065728 5312
TM065899 0216
Model Cut to size
[mm]
Duolift CC/KP/SEG, 270 L 2 x 180
Duolift CC/KP/SEG, 540 L 2 x 430
Duolift APB, 270L 2 x 163
Duolift APB, 540L 2 x 413
PP

English (GB)
14
* The Unilift CC and KP pumps are delivered with non-return clap valves.
** The adaptor Rp 2 - R 1 1/2 for the Duolift SEG is not shown on the drawing.
TM066220 3913 TM066512
Fig. 15 Discharge pipe for Duolift CC/KP* Fig. 16 Discharge pipe for
Unolift CC/KP*
TM0 59635 3913 TM0 59634 3913
Fig. 17 Discharge pipe for Duolift APB/SEG** Fig. 18 Discharge pipe for
Unolift APB/SEG**
1
3
3
1
1
2
33
2
1
2

English (GB)
15
3.18 Installing a diaphragm pump
The diaphragm pump is optional.
1. Cut open the inlet for the diaphragm pump. See
section 3.8 Drilling holes in the tank.
2. Fit the DN 40 socket seal in the opening for the
diaphragm pump at the bottom of the tank. See
figures 19 and 20.
3. Insert the pipe from the diaphragm pump into the
inlet.
4. Secure the diaphragm pump and connect it to the
building discharge pipe according to the
installation and operating instructions for the
pump.
3.19 Installing the controller
Mount the controller on a wall with screws through
the mounting holes of the back plate.
The cable entries must point downwards, and the
user interface must be easily accessible.
See the installation and operating instructions for the
controller.
3.20 Electrical connection
3.20.1 Connecting the pump
Connecting the pump to a socket
1. Lead the pump cable through the cable gland.
2. Install the plug on the cable.
A Schuko plug is provided with the product.
3. Insert the plug into a socket.
Connecting the pump to a controller
1. Lead the cable through the cable gland.
2. Connect the cableto the controller.
See wiring diagram provided with the controller.
3.20.2 Connecting the level sensor hose to the
controller
1. Lead the hose through the corresponding cable
gland.
2. Connect the level sensor hose to the pneumatic
entry underneath the controller.
The hose is connected properly when it is pushed
all the way in and locked in position. See the
installation and operating instructions for the
controller.
3.20.3 Connecting an alarm switch to the
controller
1. Lead the cable through the corresponding cable
gland.
2. Connect the alarm switch cable to the terminal
for the high-water level alarm. See the
installation and operating instructions for the
controller.
3.21 Setting the controller before start-up
LC 220
Select settings via the DIP switches. See the
installation and operating instructions for the
controller.
LC 221
You must set the start level and rated current of the
motor to be able to start the product. All other
settings are preset.
1. Close the isolating valves.
2. Make sure the pump switches on the controller
are in position "OFF".
3. Switch on the controller.
4. When "L_01" is displayed (start level menu),
press [OK].Select the start level using the left and
right arrows, and press [OK].
For more information on which start level to
select, see “Setting start levels with controller” on
page 20.
5. Go to "L_02" (rated current menu) using the left
and right arrow and select the rated motor
current [A] according to the nameplate of the
pump motor.
Some of the factory settings can be changed. See
the installation and operating instructions for the
controller.
DANGER
Electric shock
• Death or serious personal injury.
• Before starting any work on the
product, make sure that the power
supply has been switched off and that
it cannot be accidentally switched on.
LC 220 LC 221
QR98503252 QR98503253
http://net.grundfos.com/
qr/i/98503252
http://net.grundfos.com/
qr/i/98503253

English (GB)
16
4. Starting up the product
4.1 Starting up with a controller
Make sure that all pipes and connections are tight.
Make sure that the controller is set correctly. See
“Setting the controller before start-up” on page 15.
1. Switch on the controller.
2. Set the selector switch to "Auto".
3. Open the isolating valves.
4. Flush a toilet or open a tap connected to one of
the inlets.
5. Monitor the increasing liquid level in the tank up
to the start level and check that the pumps start
and stop at least twice.
4.2 Starting up without a controller
1. Make sure that all pipes and connections are
tight.
2. Open the isolating valves.
3. Switch on the power supply to the pump.
4. Activate a sanitary appliance connected to one of
the inlets.
5. Monitor the increasing liquid level in the tank up
to the start level and check that the pumps start
and stop at least twice.
4.3 Storing the product
4.4 Storing the product
The tank must not be exposed to direct sunlight. UV
can affect the properties of its composite material.
For storing the pumps and the controller, see the
installation and operating instructions for the
product.
CAUTION
Back injury
• Minor or moderate personal injury
• Get assistance from another person or
use lifting equipment to carry the
product.
CAUTION
Crushing of feet
• Minor or moderate personal injury
• Wear safety shoes when moving the
product.

English (GB)
17
5. Product introduction
5.1 Product overview
Fig. 19 Unolift 270 / Duolift 270
Fig. 20 Duolift 540
5.2 Applications
The lifting station is designed for pumping grey and
black water from family houses and commercial
buildings where the liquid cannot be led directly to
the sewer due to lack of a natural downward slope.
5.3 Pumped liquids
Unilift CC, Unilift KP, Unilift APB
Grey wastewater: domestic wastewater, excluding
toilet discharge.
SEG pumps
Grey water and black water: domestic wastewater,
including toilet discharge.
The SEG pump has a grinder system.
Surface water must not be discharged into a lifting
station inside the building.
5.4 Automatic operation
The Unolift, Duolift is designed to operate
automatically according to the liquid level inside the
tank.
The system can be set in two ways in order to
operate automatically. It must be either be equipped
with float switches, fitted directly on the pumps, or
with a level sensor tube and a controller.
TM06 1069 1614TM06 1068 1614
Pos. Description
1 Horizontal main inlets, DN 100
2 Mounting brackets
3Connection, DN 40, for optional
diaphragm pump
4 Pump outlet
5
Holes for cable glands or pump power
cables, alarm float switch and pressure
hose
6 Outlet for venting pipe ∅60
7 Vertical main inlet, DN 100
8 Hole for pressure hose

English (GB)
18
5.5 Identification
5.5.1 Nameplate
Fig. 21 Nameplate
5.5.2 Type key
5.6 Diaphragm pump
We recommend to connect a diaphragm pump to the
tank. It is a positive displacement pump which can
be operated manually. It can be used to drain the
tank before service or during power cuts. The tank
has a pre-built inlet DN 40 especially designed for it.
5.7 Level sensor tube
The level sensor is an accessory, which works
together with a controller LC 220 or LC 221.
The level sensor tube is connected to a
piezoresistive level sensor in the controller via its
pressure hose.
The rising liquid level compresses the air inside the
pressure tube and pressure hose, and the
piezoresistive sensor transforms the changing
pressure into an analogue signal. The controller
uses the analogue signal to start and stop the pump
and to indicate high water level alarm.
TM061249 3414
Pos. Description
1 Product number
2 Production site
3 Type of designation
4 Country of origin
5Weight
6 Production code
7Installation and operating instructions,
publication number
8 Not filled in
UNOLIFT 270. 40. CC
Model Unolift: one pump
Duolift: two pumps
Tank volume
[L]
270
540
Outlet DN 40
Pump
CC
KP
APB, APB
SEG
Type
Standards used: EN 12050-1 or EN 12050-2
Model
Weight
P.c.
Made in
EU declaration of performance
Denmark
P10
98646710
1325
Notified body:0197
DK-8850 Bjerringbro, Denmark
98495490
132
7
485
6

English (GB)
19
6. Operating the product
The lifting station is designed to operate
automatically according to the liquid level in the tank.
With a controller, you can easily change settings,
monitor the system or perform troubleshooting.
You can download the installation and operating
instructions for the controller with the following links
and QR codes.
6.1 Setting the start levels
The start level is closely related to the chosen inlets.
Choose a start level which will ensure a minimum
backflow in the inlet pipe, thus avoid risk of blockage
by sedimentation in the inlet pipe.
Set the start level as high as you can according to
your setup.
A high start level increase the tank effective volume
and decrease the numbers of start/stop of the
pumps.
The following illustrations show the allowed start
levels according to the inlet. Theses specific values
can only be selected with the LC 221 controller.
Fig. 22 Recommended start levels according to inlet
LC 220 LC 221
QR98503252 QR98503253
http://net.grundfos.com/
qr/i/98503252
http://net.grundfos.com/
qr/i/98503253
TM066491 1516 TM066489 1516
TM066490 1516 TM066488 1516
180
350
450
250
500
Start
level
180
350
450
250
500
Start
level
180
350
450
250
500
Start
level
180
350
450
250
500
Start
level

English (GB)
20
6.1.1 Setting start levels with controller
LC 220
Select the start levels via the DIP switches. Choose
between LOW and HIGH. The stop and alarm levels
are setup automatically according to the chosen start
level.
See the installation and operating instructions of the
controller for more information about the DIP
switches.
The preset values of start, stop and alarm levels can
be changed via the PC tool, which can be ordered as
accessory. Use product number 96705378.
LC 221
Go go [Setup], then [L_01] and choose between the
following start levels. The stop and alarm levels are
setup automatically according to the chosen start
level.
6.1.2 Setting start levels with float switches
Set the start and stop level by adjusting the length of
the free cable (L).
Fig. 23 Example start/stop levels for Unilift CC
We recommend start and stop levels corresponding
to a cable length between the minimum and
maximum indicated below.
LOW HIGH
Start level
[mm] 180 500
Stop level
[mm] 100 100
Alarm level
[mm] 350 600
12345
Start level
[mm] 180 250 350 450 500
Stop level
[mm] 100 100 100 100 100
Alarm level
[mm] 350 400 550 600 600
TM03 0829 0505
Unilift KP
Cable length (L)
70 mm (min) 150 mm (max)
Start Stop Start Stop
Unilift KP
150 290 140 335 100
Unilift KP
250
Unilift KP
350 300 150 345 110
Unilift CC
Cable length (L)
100 mm (min) 200 mm (max)
Start Stop Start Stop
Unilift CC
5350 115 400 55
Unilift CC
7
Unilift CC
9350 150 435 90
Unilift
APB
Cable length (L)
100 mm (min) 400 mm (max)
Start Stop Start Stop
Unilift
AP35/50B 430 320 460 140
Start
Stop
L