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 [e-mail]

Technical data

Drainage pumps

Unilift KP

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.

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Irrigation Warehouse Group Pty Ltd
Ph 02 6732 6333 [e-mail]

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

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