Positioning; Control Box Positions - Grundfos MAGNA1 Series Installation And Operating Instructions Manual

3.3 Positioning

Always install the pump with horizontal motor shaft.
• Pump installed correctly in a vertical pipe. See fig. 10, pos. A.
• Pump installed correctly in a horizontal pipe. See fig. 10,
pos. B.
• Do not install the pump with vertical motor shaft. See fig. 10,
pos. C and D.
A
C
Fig. 10 Pump installed with horizontal motor shaft

3.4 Control box positions

To ensure adequate cooling, the control box must be in horizontal
position with the Grundfos logo in vertical position. See fig. 11.
Fig. 11 Pump with control box in horizontal position
12
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 tighened.
See fig. 12.
Fig. 12 Fitting the pump head to the pump housing
Twin-head pumps installed in horizontal pipes
must be fitted with an automatic air vent (Rp 1/4)
Caution
in the upper part of the pump housing.
See fig. 13.
Fig. 13 Automatic air vent