Grundfos Unilift KP 250, Unilift KP 150, Unilift KP 350, Unilift KP-S 150, Unilift KP-S 250 Technical Data Manual

Irrigation Warehouse Group Pty Ltd Ph 02 6732 6333 rod@iwgroup.com.au

Technical data

Drainage pumps

Unilift KP

Fig. 7 Unilift KP-S

Unilift KP is a single-stage, submersible, stainless steel drainage pump in compact design with hermetically sealed stator housing (wet runner).

The pump can be installed in a permanent installation or used as a portable pump. It may be operated fully or partially submerged.

The pump is suitable for:

• pumping in drain pits

• pumping of wastewater without discharge from toilets

• drainage of flooded cellars or buildings

• emptying of swimming pools, tanks and fountains

• applications within agriculture, horticulture, dairies, breweries and the process industry.

Versions

The Unilift KP pump series comes in these versions:

• KP-S with integrated, electronic sensor (automatic operation)

• KP-A with float switch (automatic operation)

• KP-M without level switch (manual operation).

It is possible to upgrade a Unilift KP-A and a Unilift KP-M, 220-240 V, 50 Hz, to a Unilift KP-S. Contact Grundfos.

Special features of Unilift KP-S

• Compact design - requires a minimum of space

• Automatically self-venting if air is trapped in impeller

• Protected against blocked impeller and dry-running

• Integrated, nanocoded, super-slip, electronic sensor

• Starts even with a 2 mm thick layer of dirt on the sensor plate.

Approvals

CE, LGA, VDE, GS, EMV, GOST, UL, CSA and C-TICK.

GrA2568

Pumped liquids

The pump is suitable for

• clean, non-aggressive water

• slightly dirty (grey) wastewater. The open-impeller construction ensures the free passage

of solids up to ø10 mm.

Functions Unilift KP-S

Automatic start/stop operation by means of a sensor. The pump starts:

• when the liquid level reaches the sensor plate

• when the pump is connected to the electricity supply

• when the sensor plate is touched with a finger. The pump stops:

• when the pump starts to suck air (automatic stop)

• if the impeller is blocked.

Unilift KP-A

Automatic start/stop operation by means of a float switch.

Unilift KP-M

Manual operation by means of external start/stop.

Construction

The stainless steel pump sleeve is made in one piece with Rp 1¼ discharge port and insulating handle. Mains cable and float switch cable are combined in one vulcanized and water-tight plug, secured to the socket of the he rmetically sealed stator housing.

Liquid enters the pump through the holes of the suction strainer. The holes of the strainer prevent the passage of large solids.

The sturdy impeller has single-curved vanes. The bevelled front edges prevent fibres from jamming the impeller.

The guide vanes of the pump housing guide the liquid, lifting sand grains into the liquid flow. This prevents sand from blocking the impeller.

Motor

The motor is a single- or three-phase, asynchronous canned motor with liquid-filled rotor chamber and waterlubricated bearings. The motor is cooled by the pumped liquid around the motor.

Enclosure class: IP 68 Insulation class: F.

The motor incorporates automatic overload protection. In case of overload, the motor stops automatically. When cooled, the motor restarts automatically.

12

Irrigation Warehouse Group Pty Ltd Ph 02 6732 6333 rod@iwgroup.com.au

Technical data

Selection

The below overview is suitable for the selection of the correct size of Unilift KP pumps used in stationary applications. The flow velocity through the discharge pipe must be minimum 0.7 m/s to ensure self-cleaning.

Example: A DN 32 discharge pipe with an inner diameter of 26 to 34 mm (depending on local standards) requires a minimum flow velocity of approximately 2.3 m3/h.

The overview below shows the maximum lengths of combined vertical and horizontal DN 32 discharge pipes.

Drainage pumps

Unilift KP

Fig. 8

Overview of maximum lengths of combined vertical and horizontal discharge pipes

The above overview is only intended as a guide. Grundfos is not liable for any faulty installations based on the overview. Note: If the non-return valve is used, the pressure drop in the valve is 0.2 m head. The pressure drop is to be subtracted

from the vertical pipe lengths. The vertical height of the discharge pip e should be measured from the pump stop level.

TM03 1643 2505

13

Irrigation Warehouse Group Pty Ltd Ph 02 6732 6333 rod@iwgroup.com.au

Technical data

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Drainage pumps

Unilift KP

Operating conditions

Installation depth: Max. 10 metres below liquid level Min. liquid temperature: 0°C Max. liquid temperature at

continuous operation:

50°C *

* At intervals of at least 30 minutes, the pump is allowed, however, to

run at maximum +70°C for periods not exceeding 2 minutes.

During continuous operation, the suction strainer must always be completely covered by the liquid.

Installation

Unilift KP-S requires a minimum of space. If the pump is installed in a pit, the pit diameter must be minimum 200 mm to avoid too many starts and stops. Use the recommended dimensions in the table below.

240

••

D

Fig. 9

Pit dimensions, Unilift KP-S

Pit diameter, D [mm] 200 250 300

Maximum inlet flow to the pit [m

3

/h] 0.3 0.7 1.3

If Unilift KP-A is installed in a pit, the minimum pit dimensions must be as shown in the figure below.

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Fig. 10

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350 mm

B

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Minimum pit dimensions, Unilift KP-A

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400 mm

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H

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Level switches

A level switch starts and stops the pump between two liquid levels. This type of installation requires a non-return valve in the discharge pipe or the pump. Unilift KP pumps are available with two different level switch types.

Unilift KP-S with electronic sensor

The sensor is integrated in the pump. Consequently, the difference in level between start and stop cannot be adjusted.

Start

Stop

TM03 4446 2106

Fig. 12

TM03 4674 2406

Pump type

Unilift KP-S 150 Unilift KP-S 250

Start-stop level, Unilift KP-S

Start [mm]

205 15

Stop

[mm]

Unilift KP-S 350 215 15

Unilift KP-A with float switch

A clamp on the pump handle holds the float switch cable. The difference in level between start and stop can be adjusted by changing the free cable length between pump handle and float switch.

L

Start

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‹‹‹‹‹‹‹‹ ‹‹‹‹‹‹‹‹‹ ‹‹‹‹‹‹‹‹‹ ‹‹‹‹‹‹‹‹‹ ‹‹‹‹‹‹‹‹‹‹

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TM03 4445 2106TM00 1548 0493

Stop

Pump positioning Unilift KP-M and Unilift KP-A can be used in the ve rtical

position with the discharge port uppermost or in the horizontal or tilted position with the discharge port as the highest point of the pump.

Unilift KP-S must be used in the vertical position.

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Fig. 11 Pump positions

Fig. 13

Start/stop levels at min. and max. cable lengths,

Unilift KP-A

Cable length

(L)

Pump type

Unilift KP-A 150 Unilift KP-A 250

min. 70 mm

Start [mm]

Stop

[mm]

290 140 335 100

Unilift KP-A 350 300 150 345 110

Cable length

(L)

max. 150 mm

Start

[mm]

Stop

[mm]

TM03 4446 2106

Irrigation Warehouse Group Pty Ltd Ph 02 6732 6333 rod@iwgroup.com.au

Technical data

Performance curves

p

[kPa]

80

60

40

20

H

[m]

Drainage pumps

Unilift KP

KP 350

9

8

KP 250

7

6

KP 150

5

4

3

2

Unilift KP

50 Hz

ISO 9906 Annex A

1

0

0 2 4 6 8 10 12 Q [m³/h ]

0 1 2 3 Q [l/s]

The broken line shows a minimum liquid velocity of 0.7 m/s with a DN 32 discharge pipe to DIN EN 12056.

Pump type

KP 150 1 x 220-230 KP 150 1 x 230-240 KP 250 1 x 220-230

KP 250* 3 x 380-415 480 (415 V) 0.8 KP 350 1 x 220-240 KP 350* 3 x 380-400 1.3

* Not available in the Unilift KP-S version.

Supply voltage

[V]

Power P

1

[W]

300 1.3 0.99 2900 8

480

700

Current, I

Pump dimensions

Rp 1

214 (224*)

1

4

225 (235*)

140

31

Rp 1

214

1

4

225

140

31

[A]

2.3

3.2

n

Power factor

Cos ϕ

0.97 2900 8KP 250 1 x 230-240 2.2

0.99 2900 8

Speed

[min

-1

Capacitor

]

μF

Materials

Component Material DIN W.-Nr. AISI

Pump sleeve Stainless steel 1.4301 304 Pump housing Stainless steel 1.4301 304 Suction strainer Stainless steel 1.4301 304 Impeller Stainless steel 1.4301 304 Shaft Stainless steel 1.4057 431 Stator housing Stainless steel 1.4301 304 Guide vanes Stainless steel 1.4301 304 Bearings Carbon O-rings

Seal rings Cables

NBR H07RN-F 3 G 1

H07RN-F 4 G 1

TM03 1593 2505

Fig. 14

* Unilift KP-350

149

Pump dimensions

TM03 4679 2506

149

TM00 1642 1093

15

Technical data

Irrigation Warehouse Group Pty Ltd

Ph 02 6732 6333

iwgroup.com.au

H

p

[m]

kPa]

80

60

40

20

KP 350

9

8

KP 250

7

6

KP 150

5

4

3

2

Drainage pumps

KP

50 Hz

ISO 2548 +/- 10 %

1

0

0 2 4 6 8 10 12 Q [m³/h]

0 1 2 3 Q [l/s]

P

Pump type Voltage

KP 150 1 x 220-230 V 300 1.3 225 149 31 350 400 70 6.3

KP 150 1 x 230-240 V 300 1.3 225 149 31 350 400 70 6.3

KP 250 1 x 220-230 V 480 2.3 225 149 31 350 400 70 7.2

KP 250 1 x 230-240 V 480 2.2 225 149 31 350 400 70 7.2

KP 250 3 x 380-415 V 480 0.8 225 149 31 350 400 70 7.2

KP 350 1 x 220-240 V 700 3.2 235 149 31 350 410 70 8.0

KP 350 3 x 380-400 V 700 1.3 235 149 31 350 410 70 8.0

[W]

1

[A]

TM01 2059 0803

I

n

Dimensions [mm]

Weight

HB1B2L1L2L3

With float switch With vertical level switch

min. L

3

2

H

min. L

1

B

1

Rp 1 /

2

4

B

min. L

TM00 1803 1597

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400 mm

•

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ø 250 mm

[kg]

TM01 1109 1 098

9

Technical data

Irrigation Warehouse Group Pty Ltd

Ph 02 6732 6333

iwgroup.com.au

Drainage pumps

KP

Installation

Pumps without level switch or with float switch can be used in vertical position with the discharge port uppermost or in horizontal or tilted position with the discharge port as the highest point of the pump.

Pumps with vertical level switch must be used in vertical position.

The KP pump is well suited for permanent installation.

Level switches

A level switch, which gives impulses to start/stop between two levels of liquid, is connected to pumps intended for automatic operation. This type of installation requires a non-return valve in the discharge pipe or in the pump. The pumps are available with two different types of level switches.

Min. liquid level: – manual operation: 14 mm.

– automatic operation: See below.

Pumps with float switch:

TM00 1548 0493TM01 1 492 469 7

A clamp on the handle of the pump holds the cable of the level switch. The difference in level between start and stop can be adjusted by changing the free cable length between the handle of the pump and the level switch.

Dimensions for KP 350 are marked with "#".

Float switch

••••••••••

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Max.

Max. 150 mm

150mm

225 mm

225mm

100 mm

100mm

110 mm

Start

Stop

#

Pumps with vertical level switch:

For pumps with vertical level switch, the difference in level between start and stop is not adjustable.

Dimensions for KP 350 are marked with "#".

Vertical level switch

Start

80 mm

100 mm

110 mm#

Stop

TM02 1552 2599TM01 1108 3 297

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Grundfos Unilift KP 250, Unilift KP 150, Unilift KP 350, Unilift KP-S 150, Unilift KP-S 250 Technical Data Manual

Specifications and Main Features

Frequently Asked Questions

User Manual