Grundfos UNOLIFT Series User manual

UNOLIFT, DUOLIFT
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

2

3
Table of contents
UNOLIFT, DUOLIFT
English (GB)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Български (BG)
Упътване за монтаж и експлоатация. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Čeština (CZ)
Montážní a provozní návod. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Deutsch (DE)
Montage- und Betriebsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Dansk (DK)
Monterings- og driftsinstruktion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Eesti (EE)
Paigaldus- ja kasutusjuhend. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Español (ES)
Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . 134
Suomi (FI)
Asennus- ja käyttöohjeet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Français (FR)
Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Magyar (HU)
Telepítési és üzemeltetési utasítás. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Italiano (IT)
Istruzioni di installazione e funzionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija. . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Nederlands (NL)
Installatie- en bedieningsinstructies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Polski (PL)
Instrukcja montażu i eksploatacji . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Português (PT)
Instruções de instalação e funcionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Română (RO)
Instrucţiuni de instalare şi utilizare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380

Table of contents
4
UNOLIFT, DUOLIFT
Svenska (SE)
Monterings- och driftsinstruktion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400
Türkçe (TR)
Montaj ve kullanım kılavuzu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
中文 (CN)
安装和使用说明书 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460

English (GB)
5
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 1-4 give the information necessary to be
able to unpack, install and start up the product in a
safe way.
Sections 5-12 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
1. General information 5
1.1 Symbols used in this document 5
1.2 Symbols on the product 5
2. Receiving the product 6
2.1 Transporting the product 6
2.2 Inspecting the product 6
2.3 Scope of delivery 6
3. Installing the product 8
3.1 General guidelines 8
3.2 Mechanical installation 9
3.3 Tools 10
3.4 Installation overview 10
3.5 Positioning the product 10
3.6 Installing the tank 10
3.7 Drilling holes for the pipes 10
3.8 Fitting the cable glands 11
3.9 Fitting the vent port 11
3.10 Connecting the vent pipe 11
3.11 Connecting the inlet pipes 11
3.12 Installing the pump 12
3.13 Installing the pump connecting pipes 13
3.14 Installing the level sensor tube 15
3.15 Installing an alarm float switch 15
3.16 Installing the outlet pipes 15
3.17 Installing a diaphragm pump 17
3.18 Installing the controller 17
3.19 Electrical connection 17
3.20 Setting the controller before startup 17
4. Starting up the product 18
4.1 Starting up a product with a controller 18
4.2 Starting up a product without a controller 18
5. Storing the product 18
6. Product introduction 18
6.1 Product overview 18
6.2 Applications 19
6.3 Pumped liquids 19
6.4 Automatic operation 19
6.5 Identification 19
6.6 Diaphragm pump 19
6.7 Level sensor tube 19
7. Operating the product 20
7.1 Setting the start levels 20
8. Starting up the product after standstill 22
9. Servicing the product 22
10. Taking the product out of operation 23
11. Technical data 23
11.1 Operating conditions 23
11.2 Material 23
11.3 Electrical data 23
11.4 Dimensions and weights 23
12. Fault finding the product 24
13. Disposing of the product 24
Read this document before installing the
product. 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

English (GB)
6
2. Receiving the product
2.1 Transporting the product
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 pipes are supplied separately and
must be assembled.
Before the pump is returned to Grundfos for service,
the safety declaration at the end of these instructions
must be filled in by authorised personnel and
attached to the pump in a visible position.
If Grundfos is requested to service the pump, it must
be cleaned before it is returned.
If proper cleaning is not possible, all relevant
information about the pumped liquid must be
provided.
If the above is not fulfilled, Grundfos can refuse to
accept the pump for service.
Possible costs of returning the pump are to be paid
by the customer.
The safety declaration can be found at the end of these
instructions (only in English).
2.3.1 Description of kits
WARNING
Falling objects
Death or serious personal injury
- Secure the product during
transportation to prevent it from tilting or
falling down.
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.
Caution
If used for a liquid which is injurious to
health or toxic, the pump will be classified
as contaminated.
Tank
Designation Quantity
270 litres 540 litres
Tank 1 1
Cover with gasket 1 2
Screw, M8 x 30 12 24
Washer 12 24
Fastening bracket for
level sensor tube 22
Screw for fixing the tank 4 4
Expansion anchor for
fixing the tank 44
Socket seal, DN 40 1 1
Socket seal, DN 100 1 1

English (GB)
7
* The kit for pump connecting pipes contains a
non-return valve for the Unilift KP pump. The
Unilift CC pump is supplied with a non-return
valve.
** The threaded rod M8 and pipe clamp M8 parts
are only for DUOLIFT SEG pumps.
Pump connecting pipes
Designation
Quantity
KP/
CC SEG APB
Adapter,
Rp 2 - R 1 1/2 11 -
Double nipple,
R 2 - R 2 11 1
Nut, PVC, 2" 1 1 1
O-ring, ∅60,
EPDM -- 1
Adapter 2 - -
Stainless-steel
clamp 22 2
Flexible
connecting tube,
∅50 11 1
Elbow, 90 ° - 1 1
Flange, ∅50 - 1 -
Screw for flange - 4 -
Washer for flange - 8 -
Nut, M16, for
flange -4 -
O-ring, ∅50, for
flange -1 -
Unilift KP:
Double nipple 1- -
Unilift CC:
Adapter
1 1/2" - 1 1/4" 1- -
Unilift KP:
Non-return flap
valve 1* - -
Thread tape 1 1 1
Fitting, 2", ∅50 - 1 1
Fitting, 90 °, 2",
∅50 -1 -
Fitting, 90 °, 1 1/
2", ∅50 -1 -
Tube, ∅50 - 1 1
Threaded rod M8 - 1** -
Pipe clamp M8 - 2** -
Vent port
Socket, PVC, 75
x 63 x 2" 11 1
Gasket, EPDM,
∅63 11 1
Nut, PVC, 2" 1 1 1
Other components
Schuko plug 1 - 1
Cable gland, M20 2 1 2
Cable gland, M25 - 1 -
Pump connecting pipes
Designation
Quantity
KP/
CC SEG APB

English (GB)
8
Accessories
We recommend the following accessories.
* The Unilift CC pump is supplied with a non-return
valve.
3. Installing the product
3.1 General guidelines
The guidelines for correct mechanical installation of
lifting station are according to EN 12056-4.
• If the lifting station is installed in a basement with
recurrent penetration of groundwater, we
recommend that you install a drainage pump in a
separate pump sump below floor level. In some
countries the drainage pump is mandatory. If
there is only a risk of penetrating groundwater,
we recommend that you install a float switch
outside the lifting station and connect it to a
controller which indicates high-level alarm in
case of flooding.
• Fix the tank to the floor.
• We recommend that you connect a diaphragm
pump to the tank to be able to empty the tank
manually.
• All outlet pipes from the lifting station, diaphragm
pump and drainage pump must have a backflow
loop, i.e. a bend above the local backflow 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. Collect and
discharge surface water outside the building.
• Install a non-return valve at the outlet of the lifting
station to prevent backflow.
• Fit 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 backflow loop must be
smaller than the effective tank volume. See pos.
7 in figures 1 and 2.
• In general, a lifting station for black wastewater
must be vented above roof level. However, it is
permitted to lead the vent pipe into the main
building ventilation system. Place special two-
way venting valves 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.
• Use 45 ° bends to avoid deposits in the pipes.
Outlet pipe
Designation
Quantity
Unolift Duolift
CC/
KP APB/ SEG CC/ KP APB/ SEG
Non-
return
valve -* 1 -* 2
Double
nipple -135
Isolating
valve 1111
Union nut - - 2 2
T-piece,
PVC, 90 ° --11
Elbow,
PVC, 90 ° --22
Pipe,
∅50, 2 m --11
Thread
tape 1111

English (GB)
9
3.2 Mechanical installation
3.2.1 Tank inlets
We recommend that you connect the inlet pipes to
the top inlets of the tank. This prevents backflow and
deposits in the inlet pipe, and enables a high start
level of the pump. A high start level increases the
effective tank volume and reduces the number of
start/stops of the pumps.
3.2.2 Location
Install the lifting station 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
light can affect the properties of its composite
material, resulting in a shorter life.
The product is designed for indoor operation. If
installed outside, the lifting station must be placed in
a closed pit.
The tank can be flooded and may be installed in a
basement with risk of penetrating groundwater.
Fig. 1 Installation example with a tank in a sump and with a controller. The diaphragm pump is not
shown.
Fig. 2 Installation example with a tank on the basement floor. The diaphragm pump is not shown.
TM06 5789 0216
Pos. Designation
1 Isolating valve, inlet
2 Controller
3 Drainage pump
4Non-return valve,
outlet
5 Isolating valve, outlet
6 Vent pipe
7 Backflow loop
TM06 5790 0216
Pos. Designation
1 Isolating valve, inlet
3 Drainage pump
4Non-return valve,
outlet
5 Isolating valve, outlet
6 Vent pipe
7 Backflow loop
6
2
3
4
5
1
7
16
3
4
5
7

English (GB)
10
3.3 Tools
• Thread tape
•glue.
Not supplied with the product:
• drilling machine
• drilling bits: ∅20, ∅25
• hole saw: ∅40, ∅100
• deburring tool for polyethylene.
3.4 Installation overview
Depending on your product type, you must go
through different steps to install your lifting station.
You may need to go through additional steps if you
have ordered accessories.
Lifting station with pumps with float switches
1. Fix the tank to the floor.
2. Drill holes for the inlet pipes.
3. Connect the inlet pipes to the tank.
4. Fit the vent port and the cable glands.
5. Set the start levels by adjusting the cable length
of the float switch.
6. Install the pumps in the tank.
7. Fit the pump connecting pipes.
8. Connect the vent pipe.
9. Connect the outlet pipes.
Lifting station with controller
1. Fix the tank to the floor.
2. Drill holes for the inlet pipes.
3. Connect the inlet pipes to the tank.
4. Fit the vent port and the cable glands.
5. Install the pumps in the tank.
6. Fit the level sensor tube in the tank.
7. Fit the pump connecting pipes.
8. Connect the vent pipe.
9. Connect the outlet pipes.
3.5 Positioning the product
Position the tank so that all components are easily
accessible during operation and maintenance.
3.6 Installing the tank
Fix the tank to the floor to prevent uplift and twist.
Use the mounting brackets to fix the tank with
screws.
Fig. 3 Fixing the tank to the floor
3.7 Drilling holes for the pipes
The tank has three or four holes, ∅100, for the inlet
pipes, depending on the size. The tank also has a
hole, ∅40, for the diaphragm pump. See section
6.1 Product overview. These holes must be drilled to
be used.
Holes for the outlet pipes, the vent port and the
minimum required cable glands are open.
1. Determine which inlets you want to use. See
sections 3.2.1 Tank inlets and 7.1 Setting the
start levels.
2. Drill holes with a hole saw. The diameter of the
hole saw must be the same as the diameter of
the pipe.
3. Deburr the holes.
Fig. 4 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.
TM06 5780 0116
CAUTION
Sharp element
Minor or moderate personal injury
- Wear protective gloves.
Inlet: ∅100
Hole for diaphragm pump: ∅40
TM06 5851 0216

English (GB)
11
3.8 Fitting the cable glands
Choose the appropriate cable gland:
Fig. 5 Fitting the cable glands
3.9 Fitting the vent port
1. Fit the gasket on the socket.
2. Fit the nipple in the hole on top of the tank.
3. Fit the nut inside the tank and tighten it.
Fig. 6 Fitting the vent port
3.10 Connecting the vent pipe
The vent pipe is not supplied with the product.
You can connect your vent pipe to the vent port in
three different ways:
• By means of a PVC vent pipe with an outer
diameter of 63 mm and glue.
• 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 nipple with an inner
diameter of 75 mm. The nipple must comply with
EN 1451.
3.11 Connecting the inlet pipes
You can connect three or four inlet pipes to the tank,
depending on the tank size. First you must drill the
holes. See section 3.7 Drilling holes for the pipes.
1. Fit the socket seal in the inlet.
2. Connect the isolating valve to the inlet pipe. The
isolating valve is an accessory. Product number
96615831.
3. Insert the inlet pipe into the socket seal.
Fig. 7 Connecting an inlet pipe with an
isolating valve
Cable gland for Unilift pumps: M20
Cable gland for SEG pumps: M25
Cable gland for level sensor hose: M20
TM06 5779 0116TM06 5924 0316
TM06 5859 0216

English (GB)
12
3.12 Installing the pump
Pumps with float switches
Adjust the cable length of the float switch before you
install the pump. See section 7.1.2 Setting the start
levels with float switches.
1. Remove the plug from the pump cable. You may
need to cut the cable.
2. SEG: Fit the foot extensions. See fig. 8.
3. Position the pump in the tank.
Make sure that the float switch, if any, 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 9 and 10.
SEG: The pump weight ensures that the pump
stays in place.
4. Lead the pump cable through the cable gland of
the tank.
5. Tighten the cable gland.
Fig. 8 Fitting the foot extensions on the SEG
pump
Fig. 9 Correct position of Unilift CC and KP
pumps
Fig. 10 Correct position of Unilift APB pumps
TM02 6571 2116TM06 5965 0316
TM06 5966 0316

English (GB)
13
3.13 Installing the pump connecting pipes
3.13.1 Cutting the flexible tube
The connecting pipes are supplied with a flexible
tube of ∅50. Cut the tube to a length according to
the table below.
* Only for double pump installation.
3.13.2 Assembling the pump connecting pipes
Use the thread tape in the kit to seal the threaded
connections.
1. Assemble the connecting pipe outside the tank,
except for the nut. See pos. 1 in fig. 11.
2. Connect the connecting pipe to the pump in the
tank.
3. Connect the connecting pipe to the outlet 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 nut.
Fig. 11 Example with Unilift KP pumps
Fig. 12 Unilift CC, KP
Pump type Tube length
[mm]
UNILIFT CC 240
UNILIFT KP 350
UNILIFT APB 423
SEG 375
Pump type PE tube
length [mm] Threaded rod M8[mm]*
SEG 1 x 275
1 x 185
685 (540 L
tank)
220 (270 L
tank)
APB 1 x 270
1 x 185
TM04 9563 2014
1
TM05 9630 3913

English (GB)
14
TM05 9633 3913 TM05 9632 3913
Fig. 13 Unilift AP35B, AP50B Fig. 14 SEG
x4
TM07 8303 5220
Fig. 15 DUOLIFT SEG
x4

English (GB)
15
3.14 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 brackets inside
the tank.
The locking ring of the tube must be under the
top bracket to prevent the tube from rising with
the water level.
2. Lead the level sensor hose through the gland.
3. Tighten the gland.
Fig. 16 Correct positioning of the level sensor
tube
3.15 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 an LC 220 or LC 221 controller, you do
not need an additional alarm float switch as high-
level alarm is triggered by the level sensor.
1. Fix the cable of the float switch to the pump
connecting pipe with a cable tie.
• 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 the cable tie.
3. Drill a hole, ∅20, for the cable gland.
4. Fit the cable gland. See fig. 5.
5. Lead the cable of the float switch through the
cable gland.
6. Tighten the cable gland.
Fig. 17 Alarm float switch
3.16 Installing the outlet pipes
The outlet pipes described in this section are
accessories.
3.16.1 Cutting the pipe
This section applies to Duolift. The outlet pipe kit
includes a 2 metres' pipe ∅50. Cut the pipe into two
pieces of according to the table below.
3.16.2 Assembling the outlet pipes
See the drawings below.
Tips for Duolift
1. Assemble the outlet pipes before connecting
anything to the tank.
2. Connect the outlet pipes to the tank by tightening
the two union nuts on the tank outlets. See pos. 1
in figures 18 and 20.
TM06 5728 5312
TM06 5899 0216
Model Pipe length
[mm]
Duolift CC, KP, SEG, 270 L 2 x 180
Duolift CC, KP, SEG, 540 L 2 x 430
Duolift APB, 270 L 2 x 163
Duolift APB, 540 L 2 x 413
PP

English (GB)
16
* The Unilift CC pump is supplied with a non-return valve.
** The adapter Rp 2 - R 1 1/2 for Duolift SEG is not shown on the drawing.
TM06 6220 3913 TM06 6512 1816
Fig. 18 Duolift CC, KP* Fig. 19 Unolift CC, KP*
TM05 9635 3913 TM05 9634 3913
Fig. 20 Duolift APB, SEG** Fig. 21 Unolift APB, SEG**
1
1
11

English (GB)
17
3.17 Installing a diaphragm pump
The diaphragm pump is optional.
1. Drill the outlet for the diaphragm pump. See
section 3.7 Drilling holes for the pipes.
2. Fit the DN 40 socket seal in the opening for the
diaphragm pump at the bottom of the tank. See
figures 22 and 23.
3. Insert the pipe from the diaphragm pump into the
outlet.
4. Secure the diaphragm pump and connect it to the
building outlet pipe according to the installation
and operating instructions of the pump.
3.18 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 of the
controller.
3.19 Electrical connection
3.19.1 Connecting the pump
Connecting the pump to a power socket
1. Lead the pump cable through the cable gland.
2. Fit the power plug on the cable. A Schuko plug is
supplied with the product.
3. Insert the plug into a power socket.
Connecting the pump to a controller
1. Lead the pump cable through the cable gland.
2. Connect the pump cable to the controller. See the
wiring diagram supplied with the controller.
3.19.2 Connecting the level sensor hose to the
controller
Connect the level sensor hose to the pneumatic
entry in the bottom of the controller. The hose is
connected properly when it is pushed all the way in
and locked in position.
3.19.3 Connecting an alarm float switch to the
controller
1. Lead the cable of the float switch through one of
the M20 cable glands in the bottom of the
controller.
2. Connect the cable to the terminal for high-level
alarm. See the installation and operating
instructions of the controller.
3.20 Setting the controller before startup
LC 220
Select settings via the DIP switches. See the
installation and operating instructions of 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. Set the selector switches on the controller to
"OFF".
3. Switch on the controller.
4. When the display shows "L_01", press [OK] to
enter the start level menu.
5. Select the start level using the left and right
arrows and press [OK]. See section 7.1.1 Setting
the start levels with a controller.
6. Go to the rated current menu "L_02" using the
left and right arrows and select the rated motor
current [A] according to the nameplate of the
pump motor.
You can change some factory settings. See the
installation and operating instructions of 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.
DANGER
Electric shock
Death or serious personal injury
- The protective earth (PE) of the power
outlet must be connected to the
protective earth of the product. The plug
must have the same PE connection
system as the power outlet.
DANGER
Electric shock
Death or serious personal injury
- The installation must be fitted with a
residual current device (RCD) with a
tripping current less than 30 mA.
DANGER
Electric shock
Death or serious personal injury
- The product must be connected to an
external main switch with a minimum
contact gap of 3 mm (0.12 inch) in all
poles.
LC 220 LC 221
QR98503252 QR98503253
http://net.grundfos.com/
qr/i/98503252 http://net.grundfos.com/ qr/i/98503253

English (GB)
18
4. Starting up the product
4.1 Starting up a product with a controller
Make sure that the controller is set correctly. See
section 3.20 Setting the controller before startup.
1. Make sure that all pipes and connections are
tight.
2. Switch on the controller.
3. Set the selector switch to "AUTO".
4. Open the isolating valves.
5. Flush a toilet or open a tap connected to one of
the inlets.
6. 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 a product 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. 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.
5. Storing the product
The tank must not be exposed to direct sunlight. UV
light can affect the properties of its composite
material, resulting in a shorter life.
For information on how to store the pumps and the
controller, see the installation and operating
instructions of the product.
6. Product introduction
6.1 Product overview
Fig. 22 Unolift 270 / Duolift 270
Fig. 23 Duolift 540
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.
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
6 Outlet for vent pipe, ∅60
7 Vertical main inlet, DN 100
8 Hole for level sensor hose

English (GB)
19
6.2 Applications
The lifting station is designed for pumping grey and
black wastewater from family houses and
commercial buildings where the liquid cannot be led
directly to the sewer due to lack of a natural
downward slope.
6.3 Pumped liquids
Unilift CC, Unilift KP, Unilift APB
Grey wastewater, that is domestic wastewater
without toilet discharge.
Unilift AP50B may be used for black wastewater, that
is domestic wastewater with toilet discharge, in
countries allowing outlet pipes of DN 50 for black
wastewater without using a grinder pump.
SEG
Grey and black wastewater, that is domestic
wastewater with toilet discharge.
The SEG pump has a grinder system.
Surface water must not be discharged into a lifting
station inside the building.
6.4 Automatic operation
The lifting station is designed to operate
automatically according to the liquid level in the tank.
You can set the lifting station to automatic operation
in two ways. Equip the lifting station either with float
switches, fitted directly on the pumps, or with a level
sensor tube and a controller.
6.5 Identification
6.5.1 Type key
6.5.2 Nameplate
Fig. 24 Nameplate, lifting station
6.6 Diaphragm pump
We recommend that you 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 DN 40 outlet for the pump.
6.7 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 the
level sensor hose.
The rising liquid level compresses the air inside the
level sensor tube and hose, and the piezoresistive
sensor transforms the changing pressure into an
analog signal. The controller uses the analog signal
to start and stop the pump and to indicate high-level
alarm.
UNOLIFT 270. 40. CC
Model Unolift: one pump
Duolift: two pumps
Tank volume
[litres] 270 540
Outlet DN 40
Pump
CC
KP
APB, APB
SEG
TM04 7639 2210
Pos. Description
1 Type designation
2 Product number
3 Production code (year and week)
4-8 -
9 CE mark
10 -
11 Serial number
12-14 -
15 Maximum liquid temperature [°C]
16 Maximum ambient temperature [°C]
17 Weight [kg]
18 -
19 Reference number for the declaration of
performance
20 Notified body
Typ
Prod.-Nr.
P. c.
fHz
Serial no.
Phases
UV
A
kW
Gkg
m
m
98127055
0197
I1/1
P1
Qmax
Hmin
Hmax
TMed
max
TAmb
max
m /h
3
C
C
Made in Germany
96075419
DK - 8850 Bjerringbro, Denmark
1
2
3
4
5
6
10
11
12
13
14
15
16
17
18
20
19
7
8
9

English (GB)
20
7. 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 fault finding.
You can download the installation and operating
instructions of the controller with the following links
and QR codes.
7.1 Setting the start levels
The optimum start level is closely related to the
chosen inlet height and pipe configuration. The start
level must be as high as possible to increase the
effective tank volume and reduce the number of
start/stops of the pumps. A too high start level,
however, may increase the backflow in the inlet pipe
and thus increase the risk of deposits in the inlet
pipe.
The figures below show the recommended start
levels in relation to the inlet height and pipe
configuration.
You can select all the values with LC 221. With LC
220, you can select the lowest or highest value.
Fig. 25 Recommended start levels in relation to the inlet height and pipe configuration
LC 220 LC 221
QR98503252 QR98503253
http://net.grundfos.com/
qr/i/98503252 http://net.grundfos.com/ qr/i/98503253
TM06 6491 1516 TM06 6489 1516
TM06 6490 1516 TM06 6488 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