Grundfos UNILIFT KP 150, UNILIFT KP 250, UNILIFT KP 350, UNILIFT CC 7, UNILIFT CC 5 Installation And Operating Instructions Manual

UNOLIFT, DUOLIFT

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB) Installation and operating instructions

English (GB)

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

2. Receiving the product

2.1 Transporting the product

2.2 Inspecting the product

2.3 Scope of delivery

3. Installing the product

3.1 General guidelines

3.2 Mechanical installation

3.3 Tools

3.4 Installation overview

3.5 Positioning the product

3.6 Installing the tank

3.7 Drilling holes for the pipes

3.8 Fitting the cable glands

3.9 Fitting the vent port

3.10 Connecting the vent pipe

3.11 Connecting the inlet pipes

3.12 Installing the pump

3.13 Installing the pump connecting pipes

3.14 Installing the level sensor tube

3.15 Installing an alarm float switch

3.16 Installing the outlet pipes

3.17 Installing a diaphragm pump

3.18 Installing the controller

3.19 Electrical connection

3.20 Setting the controller before startup

4. Starting up the product

4.1 Starting up a product with a controller

4.2 Starting up a product without a controller

5. Storing the product

6. Product introduction

6.1 Product overview

6.2 Applications

6.3 Pumped liquids

6.4 Automatic operation

6.5 Identification

6.6 Diaphragm pump

6.7 Level sensor tube

7. Operating the product

7.1 Setting the start levels

8. Starting up the product after standstill

9. Servicing the product

10. Taking the product out of operation

11. Technical data

11.1 Operating conditions

11.2 Material

11.3 Electrical data

11.4 Dimensions and weights

12. Fault finding the product

13. Disposing of the product

2

2
2

3

3

1. General information

3
3

1.1 Symbols used in this document

5

5
6
7
7
7
7
7
8
8
8
8

9
10
12
12

1.2 Symbols on the product

12
14
14
14
14

15

15
15

15

15

15
16
16
16
16
16

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

16

17

17

19

19

20

20

20
20
20
20

21

21

2

2. Receiving the product

Caution

2.1 Transporting the product

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.

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.

If used for a liquid which is injurious to
health or toxic, the pump will be classified
as contaminated.

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

Tank

Designation

Tank 1 1

Cover with gasket 1 2

Screw, M8 x 30 12 24

Washer 12 24

Fastening bracket for
level sensor tube

Screw for fixing the tank 4 4

Expansion anchor for
fixing the tank

Socket seal, DN 40 1 1

Socket seal, DN 100 1 1

Quantity

270 litres 540 litres

22

44

English (GB)

3

English (GB)

Pump connecting pipes

Designation

KP/

CC

Quantity

SEG APB

Pump connecting pipes

Designation

KP/

CC

Quantity

SEG APB

Adapter,
Rp 2 - R 1 1/2

Double nipple,
R 2 - R 2

Nut, PVC, 2" 1 1 1

O-ring, ∅60,
EPDM

Adapter 2 2 2

Stainless-steel
clamp

Flexible
connecting
tube, ∅50

Elbow, 90 ° - 1 1

Flange, ∅50 - 1 -

Screw for
flange

Washer for
flange

11-

111

--1

222

111

-4-

-8-

Nut, M16, for
flange

O-ring, ∅50, for
flange

Unilift KP:
Double nipple

Unilift CC:
Adapter
1 1/2" - 1 1/4"

Unilift KP:
Non-return flap
valve

Thread tape 1 1 1

Vent port

Socket, PVC,
75 x 63 x 2"

Gasket, EPDM,
∅63

Nut, PVC, 2" 1 1 1

Other components

Schuko plug 1 - 1

Cable gland,
M20

Cable gland,
M25

* 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.

-4-

-1-

1--

1--

1*

111

111

212

-1-

4

Accessories

We recommend the following accessories.

Outlet pipe

Quantity

Designation

Non­return
valve

Double
nipple

Isolating
valve

Union nut - - 2 2

T-piece,
PVC, 90 °

Elbow,
PVC, 90 °

Pipe,
∅50, 2 m

Unolift Duolift

CC/KPAPB/

-* 1 -* 2

-135

1111

--11

--22

--11

SEG

CC/KPAPB/

SEG

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 non­return 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 two­way 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.

English (GB)

Thread
tape

* The Unilift CC pump is supplied with a non-return

valve.

1111

5

3.2 Mechanical installation

6

2

3

4

5

1

7

16

3

4

5

7

English (GB)

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.

Fig. 1 Installation example with a tank in a sump and with a controller. The diaphragm pump is not

shown.

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.

Pos. Designation

1 Isolating valve, inlet

2 Controller

3 Drainage pump

4

5 Isolating valve, outlet

6 Vent pipe

7 Backflow loop

TM06 5789 0216

Non-return valve,
outlet

Pos. Designation

1 Isolating valve, inlet

3 Drainage pump

Non-return valve,

4

outlet

5 Isolating valve, outlet

Fig. 2 Installation example with a tank on the basement floor. The diaphragm pump is not shown.

6 Vent pipe

7 Backflow loop

TM06 5790 0216

6

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

CAUTION

Back injury

Minor or moderate personal injury

- Get assistance from another person or
use lifting equipment to carry the
product.

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

CAUTION

Sharp element

Minor or moderate personal injury

- Wear protective gloves.

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.

Inlet: ∅100

Hole for diaphragm pump: ∅40

3. Deburr the holes.

English (GB)

TM06 5780 0116

CAUTION

Crushing of feet

Minor or moderate personal injury

- Wear safety shoes when moving the
product.

Position the tank so that all components are easily
accessible during operation and maintenance.

TM06 5851 0216

Fig. 4 Drilling holes for pipes

7

3.8 Fitting the cable glands

English (GB)

Choose the appropriate cable gland:

Cable gland for Unilift pumps: M20

Cable gland for SEG pumps: M25

Cable gland for level sensor hose: M20

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.

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.

TM06 5779 0116TM06 5924 0316

3. Insert the inlet pipe into the socket seal.

Fig. 6 Fitting the vent port

8

TM06 5859 0216

Fig. 7 Connecting an inlet pipe with an

isolating valve

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

English (GB)

TM06 5966 0316

Fig. 10 Correct position of Unilift APB pumps

TM02 6571 2116TM06 5965 0316

Fig. 9 Correct position of Unilift CC and KP

pumps

9

3.13 Installing the pump connecting pipes

1

English (GB)

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.

Pump type

Unilift CC 240

Unilift KP

Unilift APB 423

SEG 375

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.

Tube length

[mm]

350

Not to be cut

TM05 9630 3913

Fig. 12 Unilift CC, KP

TM04 9563 2014

Fig. 11 Example with Unilift KP pumps

10

English (GB)

x4

TM05 9633 3913

Fig. 13 Unilift AP35B, AP50B Fig. 14 SEG

TM05 9632 3913

11

3.14 Installing the level sensor tube

PP

English (GB)

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. 15 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 high­level 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. 16 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

TM06 5728 5312

pieces of according to the table below.

Model

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

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 17 and 19.

Pipe length

[mm]

TM06 5899 0216

12

English (GB)

1

1

1

1

TM06 6220 3913

Fig. 17 Duolift CC, KP* Fig. 18 Unolift CC, KP*

TM05 9635 3913

Fig. 19 Duolift APB, SEG** Fig. 20 Unolift APB, SEG**

* 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 6512 1816

TM05 9634 3913

13

3.17 Installing a diaphragm pump

English (GB)

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 21 and 22.

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

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.

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.

14

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.

LC 220 LC 221

QR98503252

http://net.grundfos.com/

qr/i/98503252

http://net.grundfos.com/

qr/i/98503253

QR98503253

4. Starting up the product

6. Product introduction

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

CAUTION

Back injury

Minor or moderate personal injury

- Get assistance from another person or
use lifting equipment to carry the
product.

6.1 Product overview

English (GB)

TM06 1069 1614TM06 1068 1614

Fig. 21 Unolift 270 / Duolift 270

CAUTION

Crushing of feet

Minor or moderate personal injury

- Wear safety shoes when moving 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.

Fig. 22 Duolift 540

Pos. Description

1 Horizontal main inlets, DN 100

2 Mounting brackets

Connection, DN 40, for optional

3

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

15

6.2 Applications

Typ

Prod.-Nr.

P. c.

fHz

Serial no.

Phases

UV

A

kW

Gkg

m

m

98127055

0197

I

1/1

P1

Qmax

Hmin

Hmax

T

Med
max

T

Amb
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)

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.

6.5.2 Nameplate

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.

Fig. 23 Nameplate, lifting station

TM04 7639 2210

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

UNOLIFT 270. 40. CC

Model

Tank volume
[litres]

Outlet DN 40

Pump

Unolift: one pump
Duolift: two pumps

270
540

CC
KP
APB, APB
SEG

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 -

Reference number for the declaration of

19

performance

20 Notified body

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

16

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.

7. Operating the product

180

350

450

250

500

Star t
level

180

350

450

250

500

Start
level

180

350

450

250

500

Star t
level

180

350

450

250

500

Star t
level

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.

LC 220 LC 221

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.

English (GB)

http://net.grundfos.com/

qr/i/98503252

QR98503252

http://net.grundfos.com/

qr/i/98503253

QR98503253

TM06 6491 1516

TM06 6490 1516

Fig. 24 Recommended start levels in relation to the inlet height and pipe configuration

TM06 6489 1516

TM06 6488 1516

17

7.1.1 Setting the start levels with a controller

Star t

Stop

L

English (GB)

LC 220

Select a start level, either "LOW" or "HIGH", via the
DIP switches. The stop and alarm levels are set
automatically according to the selected start level.

LOW HIGH

Start level
[mm]

Stop level
[mm]

Alarm level
[mm]

See the installation and operating instructions of the
controller for more information about the DIP
switches.

You can change the values corresponding to "LOW"
and "HIGH" via PC Tool, which is available as an
accessory. Product number: 96705378.

LC 221

Go go [Setup], [L_01] and select one of the following
start levels. The stop and alarm levels are set
automatically according to the selected start level.

Start level
[mm]

Stop level
[mm]

Alarm level
[mm]

7.1.2 Setting the start levels with float switches

Set the start and stop levels by adjusting the free
cable length (L).

180 500

100 100

350 600

12345

180 250 350 450 500

100 100 100 100 100

350 400 550 600 600

We recommend start and stop levels corresponding
to a cable length between the minimum and
maximum values indicated below.

Cable length (L)

Unilift KP

Unilift KP
150

Unilift KP
250

Unilift KP
350

Unilift CC

Unilift CC 5

Unilift CC 7

Unilift CC 9 350 150 435 90

Unilift
APB

Unilift
AP35/50B

70 mm

(minimum)

Start Stop Start Stop

290 140 335 100

300 150 345 110

Cable length (L)

100 mm

(minimum)

Start Stop Start Stop

350 115 400 55

Cable length (L)

100 mm

(minimum)

Start Stop Start Stop

430 320 460 140

150 mm

(maximum)

200 mm

(maximum)

400 mm

(maximum)

Fig. 25 Example of start and stop levels for

18

Unilift CC

TM03 0829 0505

7.1.3 Setting the start levels with a lever arm

Lever

arm

position

Unilift KP 150

Unilift KP 250

Unilift KP 350 260 60

Unilift CC 5 -

Unilift CC 7 -

Unilift CC 9 - 247 125

Unilift AP35/50B

* Unilift KP: Use only the high position. See fig. 26.

Fig. 26 Lever arm on Unilift KP

High*

Low 290 170

Middle 330 210

High 380 260

Start

[mm]

250 50

211 89

Stop

[mm]

8. Starting up the product after standstill

If the lifting station has been stopped for a long time,
for example in a holiday house during winter, you
must remove any hard deposits from the bottom of
the tank.

If you hear a unusual noise when the pumps start,
the pumps may blocked. Close the isolating valve on
the inlet side and remove the blockage before you
start the system again. You may need to dismantle
the pump. See section 12. Fault finding the product.

9. Servicing the product

WARNING

Biological hazard

Death or serious personal injury

- Wear protective gloves, close the
isolating valves and drain the tank
before you start any work on the tank.

According to EN 12056, lifting stations in family
houses must be maintained at least once a year, in
blocks of flats twice a year and in commercial
buildings four times a year.

We recommend that you enter a maintenance
contract with Grundfos to ensure a consistent
operational safety of the system.

Regular checks of the system must include the
following:

• Check for deposits at the bottom of the tank.

• Check for leakage.

• Check that the float switch, if any, can move
freely.

• Check that the pump is in correct position.

TM01 1006 3297

For pump maintenance, see the installation and
operating instructions of the pump. It is easy to
remove the pumps from the tank thanks to the
flexible connecting pipes and clamps.

English (GB)

19

10. Taking the product out of

English (GB)

operation

WARNING

Biological hazard

Death or serious personal injury

- Wear protective gloves, close the
isolating valves and drain the tank
before you start any work on the tank.

CAUTION

Sharp element

Minor or moderate personal injury

- Wear protective gloves when handling
the pump. The impeller has sharp
edges.

CAUTION

Crushing of feet

Minor or moderate personal injury

- Wear safety shoes when moving the
product.

1. Close the isolating valves on the inlet side.

2. Start the pumps manually to empty most of the
tank.

3. Close the isolating valve on the outlet side.

4. Empty the tank completely with the diaphragm
pump.

5. Switch of the power supply to the pumps or to the
controller, if any.

You can now disconnect and dismantle all the pipes,
remove the pumps, cables, etc.

11. Technical data

11.1 Operating conditions

Ambient temperature 0-40 °C

0-40 °C during normal

Liquid temperature

Maximum system
pressure

11.2 Material

Tank PE

Level sensor tube PVC

Parts for pipe connection PVC/PP/EPDM

11.3 Electrical data

See the installation and operating instructions of the
pump and the controller.

11.4 Dimensions and weights

The weight applies to the tank only.

Small tank 270 19.5

Big tank 540 29.5

Tank cover - 2

operation.
Maximum 60 °C for 5
minutes.

6 bar

Volume

[litres]

Weight

[kg]

20

12. Fault finding the product

WARNING

Biological hazard

Death or serious personal injury

- Wear protective gloves, close the
isolating valves and drain the tank
before you start any work on the tank.

Fault Cause Remedy

1. The pump does
not start.

2. The pump does
not stop.

3. The pump starts
and stops
randomly.

4. The tank is not
emptying although
the pump is
running.

5. The pump makes
an unusual sound.

a) The float switch is blocked in low

position.

b) The pump cable is defective. Repair or replace the cable.

a) The float switch is blocked in high

position.

a) The float switch is not set properly. Adjust the cable length of the float

b) The level sensor tube is not fixed

properly in the tank and is moving up
as the liquid rises. The sensor receives
wrong signals.

c) The float switch cannot move freely

because the pump has moved.

a) There is an airlock in the pump

impeller. The pump cannot build up
pressure.

a) The pump is blocked. Take the pump out of the tank and

For faults indicated by alarms and related to the
controller, see the installation and operating
instructions of the controller.

For faults related to the pumps, see the installation
and operating instructions of the pumps.

1. Make sure that the float switch can
move freely.

2. It may be necessary to adjust the
cable length. See section

7.1 Setting the start levels.

1. Make sure that the float switch can
move freely.

2. It may be necessary to adjust the
cable length. See section

7.1 Setting the start levels.

switch. See section 7.1 Setting the

start levels.

Fix the tube to the tank. See fig. 13.

Position the pump according to fig. 9
or 10.

Drill a hole of maximum 6 mm in the
connecting pipes in the tank. The air is
pushed out when the pump starts, and
the pump builds up pressure. The
pressure loss due to the hole is
negligible.

Do not drill a hole in the outlet pipe
outside the tank.

remove the blockage. You may need
to dismantle the pump. See the
installation and operating instructions
of the pump.

English (GB)

13. Disposing of the product

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.

The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a

waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.

collection point designated by the local

21

Appendix 1

Appendix

Fig. 1 Unolift 270, Duolift 270

22

TM06 1067 1514

Fig. 2 Duolift 540

Appendix

TM06 1066 1514

23

Grundfos companies

Argentina

Bombas GRUNDFOS de Argentina S.A.
Ruta Panamericana km. 37.500 Centro
Industrial Garin
1619 Garín Pcia. de B.A.
Phone: [phone]
Telefax: [phone]

Australia

GRUNDFOS Pumps Pty. Ltd.
P.O. Box 2040
Regency Park
South Australia 5942
Phone: [phone]
Telefax: [phone]

Austria

GRUNDFOS Pumpen Vertrieb
Ges.m.b.H.
Grundfosstraße 2
A-5082 Grödig/Salzburg
Tel.: [phone]
Telefax: [phone]

Belgium

N.V. GRUNDFOS Bellux S.A.
Boomsesteenweg 81-83
B-2630 Aartselaar
Tél.: [phone]
Télécopie: [phone]

Belarus

Представительство ГРУНДФОС в
Минске
220125, Минск
ул. Шафарнянская, 11, оф. 56, БЦ
«Порт»
Тел.: [phone]
Факс: [phone]

E-mail: [e-mail]

Bosnia and Herzegovina

GRUNDFOS Sarajevo
Zmaja od Bosne 7-7A,
BH-71000 Sarajevo
Phone: [phone]
Telefax: [phone]
www.ba.grundfos.com
e-mail: [e-mail]

Brazil

BOMBAS GRUNDFOS DO BRASIL
Av. Humberto de Alencar Castelo
Branco, 630
CEP 09850 - 300
São Bernardo do Campo - SP
Phone: [phone]
Telefax: [phone]

Bulgaria

Grundfos Bulgaria EOOD
Slatina District
Iztochna Tangenta street no. 100
BG - 1592 Sofia
Tel. [phone]
Fax. [phone]
email: [e-mail]

Canada

GRUNDFOS Canada Inc.
2941 Brighton Road
Oakville, Ontario
L6H 6C9
Phone: [phone]
Telefax: [phone]

China

GRUNDFOS Pumps (Shanghai) Co. Ltd.
10F The Hub, No. 33 Suhong Road
Minhang District
Shanghai 201106
PRC
Phone: [phone]
Telefax: [phone]

COLOMBIA

GRUNDFOS Colombia S.A.S.
Km 1.5 vía Siberia-Cota Conj. Potrero
Chico,
Parque Empresarial Arcos de Cota Bod.
1A.
Cota, Cundinamarca
Phone: [phone]
Telefax: [phone]

Croatia

GRUNDFOS CROATIA d.o.o.
Buzinski prilaz 38, Buzin
HR-10010 Zagreb
Phone: [phone]
Telefax: [phone]
www.hr.grundfos.com

GRUNDFOS Sales Czechia and
Slovakia s.r.o.

Čajkovského 21
779 00 Olomouc
Phone: [phone]

Denmark

GRUNDFOS DK A/S
Martin Bachs Vej 3
DK-8850 Bjerringbro
Tlf.: [phone]
Telefax: [phone]
E-mail: [e-mail]
www.grundfos.com/DK

Estonia

GRUNDFOS Pumps Eesti OÜ
Peterburi tee 92G
11415 Tallinn
Tel: + 372 606 1690
Fax: + 372 606 1691

Finland

OY GRUNDFOS Pumput AB
Trukkikuja 1
FI-01360 Vantaa
Phone: [phone]

France

Pompes GRUNDFOS Distribution S.A.
Parc d’Activités de Chesnes
57, rue de Malacombe
F-38290 St. Quentin Fallavier (Lyon)
Tél.: [phone]
Télécopie: [phone]

Germany

GRUNDFOS GMBH
Schlüterstr. 33
40699 Erkrath
Tel.: [phone]
Telefax: [phone]
e-mail: [e-mail]
Service in Deutschland:
e-mail: [e-mail]

Greece

GRUNDFOS Hellas A.E.B.E.
20th km. Athinon-Markopoulou Av.
P.O. Box 71
GR-19002 Peania
Phone: [phone]
Telefax: +0030-210-66 46 273

Hong Kong

GRUNDFOS Pumps (Hong Kong) Ltd.
Unit 1, Ground floor
Siu Wai Industrial Centre
29-33 Wing Hong Street &
68 King Lam Street, Cheung Sha Wan
Kowloon
Phone: [phone]
Telefax: [phone]

Hungary

GRUNDFOS Hungária Kft.
Tópark u. 8
H-2045 Törökbálint,
Phone: [phone]
Telefax: [phone]

India

GRUNDFOS Pumps India Private
Limited
118 Old Mahabalipuram Road
Thoraipakkam
Chennai 600 096
Phone: [phone]

Indonesia

PT. GRUNDFOS POMPA
Graha Intirub Lt. 2 & 3
Jln. Cililitan Besar No.454. Makasar,
Jakarta Timur
ID-Jakarta 13650
Phone: [phone]
Telefax: [phone] / 460 6901

Ireland

GRUNDFOS (Ireland) Ltd.
Unit A, Merrywell Business Park
Ballymount Road Lower
Dublin 12
Phone: [phone]
Telefax: [phone]

Italy

GRUNDFOS Pompe Italia S.r.l.
Via Gran Sasso 4
I-20060 Truccazzano (Milano)
Tel.: [phone]
Telefax: [phone] / 95838461

Japan

GRUNDFOS Pumps K.K.
1-2-3, Shin-Miyakoda, Kita-ku,
Hamamatsu
431-2103 Japan
Phone: [phone]
Telefax: [phone]

Korea

GRUNDFOS Pumps Korea Ltd.
6th Floor, Aju Building 679-5
Yeoksam-dong, Kangnam-ku, 135-916
Seoul, Korea
Phone: [phone]
Telefax: [phone]

Latvia

SIA GRUNDFOS Pumps Latvia
Deglava biznesa centrs
Augusta Deglava ielā 60, LV-1035, Rīga,
Tālr.: + 371 714 9640, 7 149 641
Fakss: + 371 914 9646

Lithuania

GRUNDFOS Pumps UAB
Smolensko g. 6
LT-03201 Vilnius
Tel: + 370 52 395 430
Fax: + 370 52 395 431

Malaysia

GRUNDFOS Pumps Sdn. Bhd.
7 Jalan Peguam U1/25
Glenmarie Industrial Park
40150 Shah Alam
Selangor
Phone: [phone]
Telefax: [phone]

Mexico

Bombas GRUNDFOS de México S.A. de
C.V.
Boulevard TLC No. 15
Parque Industrial Stiva Aeropuerto
Apodaca, N.L. 66600
Phone: [phone]
Telefax: [phone]

Netherlands

GRUNDFOS Netherlands
Veluwezoom 35
1326 AE Almere
Postbus 22015
1302 CA ALMERE
Tel.: [phone]
Telefax: [phone]
E-mail: [e-mail]

New Zealand

GRUNDFOS Pumps NZ Ltd.
17 Beatrice Tinsley Crescent
North Harbour Industrial Estate
Albany, Auckland
Phone: [phone]
Telefax: [phone]

Norway

GRUNDFOS Pumper A/S
Strømsveien 344
Postboks 235, Leirdal
N-1011 Oslo
Tlf.: [phone]
Telefax: [phone]

Poland

GRUNDFOS Pompy Sp. z o.o.
ul. Klonowa 23
Baranowo k. Poznania
PL-62-081 Przeźmierowo
Tel: [phone]
Fax: [phone]

Portugal

Bombas GRUNDFOS Portugal, S.A.
Rua Calvet de Magalhães, 241
Apartado 1079
P-2770-153 Paço de Arcos
Tel.: [phone]
Telefax: [phone]

Romania

GRUNDFOS Pompe România SRL
Bd. Biruintei, nr 103
Pantelimon county Ilfov
Phone: [phone]
Telefax: [phone]
E-mail: [e-mail]

Russia

ООО Грундф ос Россия
ул. Школьная, 39-41
Москва, RU-109544, Russia
Тел. [phone] (495) 737-30-

00
Факс [phone]
E-mail [e-mail]

Serbia

Grundfos Srbija d.o.o.
Omladinskih brigada 90b
11070 Novi Beograd
Phone: [phone]
Telefax: [phone]
www.rs.grundfos.com

Singapore

GRUNDFOS (Singapore) Pte. Ltd.
25 Jalan Tukang
Singapore 619264
Phone: [phone]
Telefax: [phone]

Slovakia

GRUNDFOS s.r.o.
Prievozská 4D
821 09 BRATISLAVA
Phona: [phone]
sk.grundfos.com

Slovenia

GRUNDFOS LJUBLJANA, d.o.o.
Leskoškova 9e, 1122 Ljubljana
Phone: [phone]
Telefax: [phone]
E-mail: [e-mail]

South Africa

GRUNDFOS (PTY) LTD
Corner Mountjoy and George Allen
Roads
Wilbart Ext. 2
Bedfordview 2008
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Spain

Bombas GRUNDFOS España S.A.
Camino de la Fuentecilla, s/n
E-28110 Algete (Madrid)
Tel.: [phone]
Telefax: [phone]

Sweden

GRUNDFOS AB
Box 333 (Lunnagårdsgatan 6)
431 24 Mölndal
Tel.: [phone]
Telefax: [phone]

Switzerland

GRUNDFOS Pumpen AG
Bruggacherstrasse 10
CH-8117 Fällanden/ZH
Tel.: [phone]
Telefax: [phone]

Tai wan

GRUNDFOS Pumps (Taiwan) Ltd.
7 Floor, 219 Min-Chuan Road
Taichung, Taiwan, R.O.C.
Phone: [phone]
Telefax: [phone]

Thailand

GRUNDFOS (Thailand) Ltd.
92 Chaloem Phrakiat Rama 9 Road,
Dokmai, Pravej, Bangkok 10250
Phone: [phone]
Telefax: [phone]

Turkey

GRUNDFOS POMPA San. ve Tic. Ltd.
Sti.
Gebze Organize Sanayi Bölgesi
Ihsan dede Caddesi,

2. yol 200. Sokak No. 204
41490 Gebze/ Kocaeli
Phone: +90 - 262-679 7979
Telefax: +90 - 262-679 7905
E-mail: [e-mail]

Ukraine

Бізнес Центр Європа
Столичне шосе, 103
м. Київ, 03131, Україна
Телефон: [phone]
Факс.: [phone]

E-mail: [e-mail]

United Arab Emirates

GRUNDFOS Gulf Distribution
P.O. Box 16768
Jebel Ali Free Zone
Dubai
Phone: [phone]
Telefax: [phone]

United Kingdom

GRUNDFOS Pumps Ltd.
Grovebury Road
Leighton Buzzard/Beds. LU7 4TL
Phone: [phone]
Telefax: [phone]

U.S.A.

GRUNDFOS Pumps Corporation
9300 Loiret Blvd.
Lenexa, Kansas 66219
Phone: [phone]
Telefax: [phone]

Uzbekistan

Grundfos Tashkent, Uzbekistan The
Representative Office of Grundfos
Kazakhstan in Uzbekistan
38a, Oybek street, Tashkent
Телефон: [phone] / 71 150
3291
Факс: [phone]

Addresses Revised 14.03.2018

Grundfos companies

98490287 1218

ECM: 1250029

© 2018 Grundfos Holding A/S, all rights reserved.

Trademarks displayed in this material, incl uding but not limited to Grundfos, the Grundfos logo and “be

think innovate” are registered trademarks owned by T he Grundfos Group. All rights reserved.

www.grundfos.com