Grundfos Unilift KP 250 User manual

Unilift KP 150, KP 250, KP 350

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

Other languages

http://net.grundfos.com/qr/i/96894217

English (GB)

2

English (GB) Installation and operating instructions

Original installation and operating instructions

These installation and operating instructions

describe Grundfos Unilift KP 150, KP 250 and

KP 350.

Sections 1-4 give the information necessary to be

able to unpack, install and start up the product in a

safe way.

Sections 5-9 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 Hazard statements

The symbols and hazard statements below may

appear in Grundfos installation and operating

instructions, safety instructions and service

instructions.

The hazard statements are structured in the

following way:

1. General information 2

1.1 Hazard statements 2

1.2 Notes 3

2. Receiving the product 3

2.1 Inspecting the product 3

3. Installing the product 3

3.1 Location 3

3.2 Mechanical installation 4

3.3 Electrical connection 6

4. Starting up the product 7

4.1 Unilift KP-A 7

4.2 Unilift KP-AV 7

4.3 Unilift KP-M 7

5. Product introduction 8

5.1 Intended use 8

5.2 Pumped liquids 8

5.3 Identification 9

6. Servicing the product 10

6.1 Maintaining the product 10

6.2 Cleaning the pump 10

6.3 Service kits 12

6.4 Contaminated pumps 12

7. Fault finding the product 13

8. Technical data 15

8.1 Storage temperature 15

8.2 Operating conditions 15

8.3 Sound pressure level 15

9. Disposing of the product 15

Read this document before installing the

product. Installation and operation must

comply with local regulations and accepted

codes of good practice.

This appliance can be used by children

aged from 8 years and above and persons

with reduced physical, sensory or mental

capabilities or lack of experience and

knowledge if they have been given

supervision or instruction concerning use

of the appliance in a safe way and

understand the hazards involved.

Children shall not play with the appliance.

Cleaning and user maintenance shall not

be made by children without supervision.

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.

SIGNAL WORD

Description of hazard

Consequence of ignoring the warning.

- Action to avoid the hazard.

English (GB)

3

1.2 Notes

The symbols and notes below may appear in

Grundfos installation and operating instructions,

safety instructions and service instructions.

2. Receiving the product

2.1 Inspecting the product

Check that the product received is in accordance

with the order.

Check that the voltage and frequency of the product

match voltage and frequency of the installation site.

3. Installing the product

3.1 Location

3.1.1 Minimum space for Unilift KP-A

The pit, basin or tank must be sized according to the

relation between the water flow to the pit, basin or

tank and the pump performance.

When the pump is installed in a permanent

installation with a float switch, the minimum

dimensions of the pit, basin or tank must be as

shown in fig. 1to ensure free movability of the float

switch. The float switch is set to the minimum free

cable length. See section 3.2.5 Start and stop levels.

Fig. 1 Minimum installation dimensions, Unilift

KP-A

Observe these instructions for explosion-

proof products.

A blue or grey circle with a white graphical

symbol indicates that an action must be

taken.

A red or grey circle with a diagonal bar,

possibly with a black graphical symbol,

indicates that an action must not be taken

or must be stopped.

If these instructions are not observed, it

may result in malfunction or damage to the

equipment.

Tips and advice that make the work easier.

WARNING

Falling objects

Death or serious personal injury

- Keep the product in a stable position

during unpacking.

- Wear personal protective equipment.

CAUTION

Toxic material

Minor or moderate personal injury

- The product will be classified as

contaminated if used for a liquid which

is injurious to health or toxic.

- Wear personal protective equipment.

Installation must be carried out by

specially trained persons and according to

local regulations.

According to EN 60335-2-41/A2:2010, this

product with 5 m of mains cable may be

used only for indoor applications.

Always have at least 3 m free cable above

liquid level. This limits the installation

depth to 7 m for pumps with 10 m cable

and to 2 m for pumps with 5 m cable.

TM03 4445 2106

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H

B

400 mm

350 mm

English (GB)

4

3.1.2 Minimum space for Unilift KP-AV

For pumps with a vertical level switch, the minimum

installation dimensions of the pit, basin or tank must

be as shown in fig. 2.

Fig. 2 Minimum installation dimensions, Unilift

KP-AV

3.1.3 Minimum space for Unilift KP-M

The pump requires no more space than the physical

dimensions of the pump. See the Appendix.

3.2 Mechanical installation

3.2.1 Foundation

Place the pump on a plate or on bricks so that the

inlet strainer is free of sludge, mud or similar

materials. See fig. 3.

Fig. 3 Pump placed on a plate

3.2.2 Lifting the pump

Lift the pump using the pump handle. Do not lift the

pump by the power cable or by the outlet pipe or

hose.

If the pump is installed in a well or tank, lower and lift

it by means of a wire or chain fastened to the pump

handle.

3.2.3 Positioning the pump

Unilift KP-A and Unilift KP-M can be used in vertical

position with the outlet pointing upwards. The pumps

may also be used in horizontal or tilted position with

the outlet as the highest point. See fig. 4.

During operation, the inlet strainer must always be

completely covered by the pumped liquid.

Fig. 4 How to position Unilift KP-A and Unilift

KP-M

When the pipe or hose has been connected, place

the pump in its operating position.

Position the pump so that the pump inlet will not be

blocked or partly blocked by sludge, mud or similar

materials.

In the case of permanent installation, the pit must be

cleared of sludge, pebbles, etc. before the pump is

installed.

TM01 1109 1098

DANGER

Electric shock

Death or serious personal injury

- Switch off the power supply before

starting any work on the product.

- Make sure that the power supply cannot

be accidentally switched on.

CAUTION

Sharp element

Minor or moderate personal injury

- Wear personal protective equipment.

- Make sure that persons cannot come

into contact with the pump impeller.

Do not install the pump hanging from the

electric cable or the outlet pipe.

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ø 250 mm

400 mm

∅250 mm

400 mm

TM00 1549 0493

Do not pull or lift the product by the power

cable.

TM00 1548 0493

Always place Unillift KP-AV in vertical

position.

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English (GB)

5

3.2.4 Pipe connection

Fit the outlet pipe or hose in the Rp 1 1/4 outlet.

Steel pipes can be screwed directly into the pump

outlet.

In a permanent installation, fit a union to the outlet

pipe to facilitate mounting and removal. If a hose is

used, fit a hose union.

In a permanent installation with a level switch, fit a

non-return valve to the outlet pipe or hose.

3.2.5 Start and stop levels

Unilift KP-A

For pumps supplied with a float switch, the difference

in level between start and stop can be adjusted by

changing the free cable length between the float

switch and the pump handle.

• An increased free cable length will result in fewer

starts and stops and a large difference in level.

• A reduced free cable length will result in more

frequent starts and stops and a small difference

in level.

The stop level must be above the pump inlet to

prevent the pump from taking in air.

Fig. 5 Start and stop levels, Unilift KP-A

Unilift KP-AV

The level difference for pumps with a vertical level

switch cannot be adjusted. Start and stop levels

appear from fig. 6.

Fig. 6 Start and stop levels, Unilift KP-AV

TM03 4446 2106

Unilift KP-A start and stop levels

Minimum cable

length (L):

70 mm

Maximum cable

length (L):

150 mm

Pump

type

Start

[mm]

Stop

[mm]

Start

[mm]

Stop

[mm]

KP 150 A

KP 250 A 290 140 335 100

KP 350 A 300 150 345 110

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L

Start

Stop

TM01 1108 3797

Pump type

Vertical level switch

Start

[mm]

Stop

[mm]

Unilift KP 150 AV

Unilift KP 250 AV 180 100

Unilift KP 350 AV 190 110

Start

Stop

80 mm

100 mm

Start

Stop

English (GB)

6

3.3 Electrical connection Make sure that the product is suitable for the supply

voltage and frequency available at the installation

site. Voltage and frequency are marked on the pump

nameplate.

The pump must be connected to an external main

switch. If the pump is not installed close to the

switch, the switch must be of a lockable type.

Three-phase pumps must be connected to an

external motor-protective circuit breaker. The rated

current of the motor-protective circuit breaker must

correspond to the electrical data marked on the

pump nameplate.

If a level switch is connected to a three-phase pump,

the motor-protective circuit breaker must be

magnetically operated.

Single-phase and three-phase pumps incorporate

thermal overload protection and require no additional

motor protection. Except for Unilift KP 350, 3 x 200

V, 50 Hz, which must be connected to a motor-

protective circuit breaker.

Three-phase pumps with a float switch, Unilift KP-A,

must be connected to the mains supply by means of

a contactor. See fig. 7.

Fig. 7 Wiring diagram

DANGER

Electric shock

Death or serious personal injury

- Switch off the power supply before

starting any work on the product.

- Make sure that the power supply cannot

be accidentally switched on.

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

- Make sure that the power supply plug

delivered with the product is in

compliance with local regulations.

- The plug must have the same protective

earth (PE) connection system as the

power outlet. If not, use a suitable

adapter if allowed by local regulations.

DANGER

Electric shock

Death or serious personal injury

- Power cables without a plug must be

connected to a supply disconnecting

device incorporated in the fixed wiring

according to the local wiring rules.

All electrical connections must be carried

out by a qualified person in accordance

with local regulations.

Depending on local regulations, a pump

with minimum 10 m of mains cable must

be used if the pump is used as a portable

pump for different applications.

If the motor is overloaded, it will stop

automatically. When the motor has cooled

to normal temperature, it restarts

automatically.

TM00 2011 3793

Yellow and green

Blue

Brown

Black

English (GB)

7

3.3.1 Checking the direction of rotation

Three-phase pumps only

Check the direction of rotation every time the pump

is connected to a new installation.

1. Place the pump on a plane surface.

2. Start and stop the pump.

3. Observe the pump when started. If the pump

gives a slight clockwise jerk, see fig. 8, the

direction of rotation of the motor is correct. If the

jerk is counter-clockwise, interchange two

phases in the mains connection.

Fig. 8 Direction of rotation

If the pump is connected to a pipe system, check the

direction of rotation in this way:

1. Start the pump and check the quantity of water.

2. Stop the pump and interchange two phases in the

mains connection.

3. Start the pump and check the quantity of water.

4. Stop the pump.

5. Compare the results taken under points 1 and 3.

The largest quantity of water indicates the correct

direction of rotation.

4. Starting up the product

1. Before starting the pump, check that the inlet

strainer is fitted to the pump and submerged in

the pumped liquid.

2. Open the isolating valve, if fitted, and check the

level switch setting.

4.1 Unilift KP-A

The pump will start and stop automatically,

depending on the liquid level and the cable length of

the float switch.

Forced operation

If the pump is used for draining liquid below the stop

level of the float switch, the float switch can be held

in a higher position by fastening it to the outlet pipe.

During forced operation, check the liquid level

regularly to avoid dry running.

4.2 Unilift KP-AV

The pump starts and stops automatically depending

on the liquid level.

4.3 Unilift KP-M

The pump is started and stopped via an external

switch.

To avoid dry running, check the liquid level regularly

during operation, for instance via external level

monitoring.

To enable the pump to self-prime during startup, the

liquid level must be at least 30 mm.

The pump can pump down to a liquid level of 15 mm.

TM03 4482 2219

XXXXXXXX

EN 12050-2

IP68

Tmax XXX °C

TYPE XXXXXXX XXXXX

Serial no. XXXX-XX-XXXX X

XXXXXX

Qmax XXXX m3/h

Hmax XXX m

Ins. cl. F

Made in HUNGARY

XXX A

U XXXXXXX V XX Hz

DK-8850 Bjerringbro, Denmark

XX m

P1 XXX W

0197

DANGER

Electric shock

Death or serious personal injury

- Do not use the pump in swimming

pools, garden ponds or similar places if

there are people in the water.

The pump may be run briefly to check the

direction of rotation without being

submerged in the pumped liquid.

English (GB)

8

5. Product introduction

Grundfos Unilift KP pumps are available in these

versions:

Fig. 9 Pumps with a level switch

5.1 Intended use

The Grundfos Unilift KP pump is a single-stage

submersible pump designed for pumping grey

wastewater, that is, wastewater from showers, sinks,

washing machines, etc.

The pump is capable of pumping water which

contains a limited quantity of solids, however not

stones and similar materials, without being blocked

or damaged.

The pump is available for automatic as well as

manual operation and can be installed in a

permanent installation or used as a portable pump.

Incorrect application of the pump, for example

resulting in blocking of the pump, and wear are not

covered by the warranty.

5.2 Pumped liquids

The pump is capable of pumping wastewater

containing a limited quantity of spherical particles.

Pumping of spherical particles exceeding the

maximum particle size for the pump may block or

damage the pump.

Maximum particle size: See section 8. Technical

data.

The pump is not suitable for these liquids:

• sewage

• liquids containing long fibres

• flammable liquids (oil, petrol, etc.)

• aggressive liquids

• liquids containing solids exceeding the pump's

recommended maximum particle size.

• Unilift KP-A Automatic start/stop operation via a

float switch.

• Unilift KP-AV Automatic start/stop operation via a

vertical level switch.

• Unilift KP-M Manual operation via an external

on/off switch, without a level switch.

TM01 1107 1205

Pos. Description

1 Outlet, Rp 1 1/4

2 Handle

3 Cable clamp

4 Inlet strainer

5 Pump sleeve

6 Float switch

7 Vertical level switch

Unilift KP-A with

float switch

Unilift KP-AV with

vertical level switch

Applications

KP 150

KP 250

KP 350

Drainage of flooded cellars or

buildings ●●●

Groundwater lowering ●●●

Pumping of water from drain water

collecting tanks and pits ●●●

Pumping of water from surface

water tanks and pits with inflow from

roof gutters, shafts, tunnels, etc.

●●●

Emptying and filling of swimming

pools, ponds, tanks, etc. ●●●

Pumping of wastewater from

washing machines, baths, sinks, etc.

from cellars up to sewer level

●●●

The pump contains approx. 70 ml of non-

toxic motor liquid which will be mixed with

the pumped liquid in case of a leak.

English (GB)

9

5.3 Identification

5.3.1 Nameplate

Fig. 10 Nameplate example

5.3.2 Type key

TM074470 1719

Pos. Description

1 ID number for Safety Instruction

2 ID number for EN standards

3 Approvals

4 Product type

5 Supply voltage [V]

6 Frequency [Hz]

7 Power input [W]

8 Insulation class

9 Maximum current [A]

10 Insulation class

11 Serial number, factory and production

code (YYWW)

12 Nameplate layout

13 Maximum liquid temperature [°C]

14 Maximum flow rate [m3/h]

15 Maximum head [m]

16 Maximum installation depth [m]

96608111

IP68

Tmax XXX °C

TYPE XXXXXXX XXXXX

Serial no. XXXX-XX-XXXX X

XXXXXX

Qmax XXXX m3/h

Hmax XXX m

Ins. cl. F

Made in HUNGARY

XXX A

U XXXXXXX V XX Hz

DK-8850 Bjerringbro, Denmark

XX m

P1 XXX W

XXXXXXXX

EN 12050-2

••••

XXXXXXXX

EN 12050-2

••••

4

5

6

7

8

9

10

16

15

14

13

12

11

1

2

3

Example Unilift KP 150 A 1

Type range

Rated motor output P2[W]

150

250

350

Level control

A = Automatic operation with float switch

AV = Automatic operation with vertical level

switch

M = Manual operation without level switch

Motor

1 = single-phase

3 = three-phase

English (GB)

10

6. Servicing the product

1. If the pump has been used for liquids other than

clean water, flush the pump thoroughly with clean

water before carrying out maintenance and

service.

2. Rinse the pump parts in water after dismantling.

6.1 Maintaining the product

Under normal operating conditions, the pump is

maintenance-free.

If the pump has been used for liquids other than

clean water, flush it through with clean water

immediately after use.

If the pump delivers too little water due to deposits or

the like, dismantle and clean the pump.

6.2 Cleaning the pump

If the pump delivers too little water due to deposits or

the like, dismantle and clean the pump.

6.2.1 Cleaning the inlet strainer

1. Disconnect the power supply.

2. Drain the pump.

3. Carefully loosen the inlet strainer by inserting a

screwdriver in the recess between the pump

sleeve and the strainer. Use the screwdriver to

push apart the outer casing and the strainer.

Repeat the procedure, working around the pump,

until the strainer is free and can be removed. See

fig. 11.

Fig. 11 How to remove the inlet strainer

4. Remove the inlet strainer, clean and refit it.

DANGER

Electric shock

Death or serious personal injury

- Switch off the power supply before

starting any work on the product.

- Make sure that the power supply cannot

be accidentally switched on.

CAUTION

Sharp element

Minor or moderate personal injury

- Wear personal protective equipment.

CAUTION

Toxic material

Minor or moderate personal injury

- The product will be classified as

contaminated if it has been used for a

liquid which is injurious to health or

toxic.

- Wear personal protective equipment.

CAUTION

Biological hazard

Minor or moderate personal injury

- Flush the product thoroughly with clean

water and rinse the parts in water after

dismantling.

- Wear personal protective equipment.

If the power cable or the level switch is

damaged, it must be replaced by a service

workshop authorised by Grundfos.

Service must be carried out by specially

trained persons.

Furthermore, all rules and regulations

covering safety, health and environment

must be observed.

The pump contains approx. 70 ml of non-

toxic motor liquid which will be mixed with

the pumped liquid in case of a leak.

The inlet strainer and the pump housing

can be dismantled by untrained persons.

Further disassembly of the pump must be

carried out by a specially trained person.

TM03 1167 1205

Grundfos Unilift KP 250 User manual

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