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MAGNA3 25-40 N 180 97924336
Инструкция по эксплуатации Страница: 8

Grundfos MAGNA3 25-40 N 180 97924336 [8/1656] Mechanical installation

Grundfos MAGNA3 D 32-80 180 97924451 [8/1656] Mechanical installation

English (GB)

3.3 Mechanical installation

The pump range includes both flanged and threaded versions.

These installation and operating instructions apply to both

versions, but give a general description of flanged versions. If the

versions differ, the threaded version will be described separately.

Install the pump so that it is not stressed by the pipes. For

maximum permissible forces and moments for pipe connections

acting on the pump flanges or threaded connections, see page

1653.

You can suspend the pump directly in the pipes, provided that the

pipes support the pump.

Twin-head pumps are prepared for installation on a mounting

bracket or base plate. The pump housing has a M12 thread.

To ensure adequate cooling of motor and electronics, observe the

following requirements:

• Position the pump in such a way that sufficient cooling is

ensured.

• The ambient temperature must not exceed 40 °C.

3.4 Positioning the pump

Always install the pump with horizontal motor shaft.

• Pump installed correctly in a vertical pipe. See fig. 8, pos. A.

• Pump installed correctly in a horizontal pipe. See fig. 8, pos. B.

• Do not install the pump with vertical motor shaft. See fig. 8,

pos. C and D.

Fig. 8 Pump installed with horizontal motor shaft

Step Action Illustration

Arrows on the pump housing

indicate the flow direction

through the pump. The flow

direction can be horizontal or

vertical, depending on the

control box position.

TM05 2862 3216 - TM05 8456 3216

Close the isolating valves

and make sure that the

system is not pressurised

during the installation of the

pump.

TM05 2863 3216

Mount the pump with gaskets

in the pipes.

TM05 2864 3216

Flanged version:

Fit bolts and nuts. Use the

right size of bolts according

to system pressure.

For further information about

torques, see page 1653.

Threaded version:

Tighten the union nuts.

TM05 2865 3216 - TM05 8455 3216

TM05 2866 3216

Grundfos MAGNA3 25-40 N 180 97924336 [8/1656] Mechanical installation

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