Positioning; Control Box Positions; Pump Head Position - Grundfos MAGNA3 65-XX Notice D'installation Et De Fonctionnement

4.2 Positioning

Always install the pump with horizontal motor shaft.
• Pump installed correctly in a vertical pipe. See fig. 7, pos. A.
• Pump installed correctly in a horizontal pipe. See fig. 7, pos. B.
• Do not install the pump with vertical motor shaft. See fig. 7,
pos. C and D.
A
C
Fig. 7 Pump installed with horizontal motor shaft

4.3 Control box positions

To ensure adequate cooling, the control box must be in horizontal
position with the Grundfos logo in vertical position. See fig. 8.
Fig. 8 Pump with control box in horizontal position
10
B
D
If the pump head is removed before the pump is installed in the
pipework, pay special attention when fitting the pump head to the
pump housing:
1. Gently lower the pump head with rotor shaft and impeller into
the pump housing.
2. Make sure that the contact face of the pump housing and that
of the pump head are in contact before the clamp is tightened.
See fig. 9.
Fig. 9 Fitting the pump head to the pump housing

4.4 Pump head position

If the pump head is removed before the pump is installed in the
pipework, pay special attention when fitting the pump head to the
pump housing:
3. Visually check that the floating ring in the sealing system is
centered. See figs. 10 and 11.
4. Gently lower the pump head with rotor shaft and impeller into
the pump housing.
5. Make sure that the contact face of the pump housing and that
of the pump head are in contact before the clamp is tightened.
See fig. 12.
Fig. 10 Correctly centered sealing system