Pump Location; Adjustment Of Float Switch - Grundfos Unilift KP 150 Instrucciones De Instalación Y Funcionamiento

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When the pump is installed in a permanent installa-

tion with float switch/vertical level switch, a non-

return valve must be fitted in the discharge pipe/

hose. If the pump is installed in a well and with a

minimum free cable length according to figure 9, the

minimum dimensions of the well should be as shown

in figure 4 to ensure free movability of the float

switch. Figure 5 shows a pump with a vertical level

switch.

Furthermore, the well should be sized according to

the relation between the water flow to the well and

the pump capacity.

With float switch

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ø 350 mm

Fig. 4

With vertical level switch

•

ø 250 mm

Fig. 5

3.2 Pump location

Pumps without 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, see fig. 6.

Note: Pumps with vertical level switch must be used

in vertical position.

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400 mm

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400 mm

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400 mm

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Fig. 6

When the pipe/hose has been connected, the pump

is ready for use.

Note: Do not lift the pump by means of the electric

cable. Lift the pump by means of the discharge pipe/

hose or a wire secured to the handle of the pump.

Before positioning the pump, make sure that the suc-

tion strainer will not be blocked or partly blocked by

silt, mud or similar materials.

This can be avoided by positioning the pump on

bricks, an iron plate, etc., see fig. 7.

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Fig. 7

3.3 Adjustment of float 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 float switch.

Large difference in level: long free cable. This

cable length must not exceed 150 mm, see fig. 8.

Max

Max.

150 mm

150mm

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Fig. 8

* For Unilift KP 350 the distance between the bot-

tom of the suction strainer and the lowest level of

the float is 110 mm.

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Start

225 mm

225mm

Stop

100 mm (110 mm*)

100mm

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Este manual también es adecuado para:

Unilift kp 250 Unilift kp 350

Pump Location; Adjustment Of Float Switch - Grundfos Unilift KP 150 Instrucciones De Instalación Y Funcionamiento

3.2 Pump location

3.3 Adjustment of float switch

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