Mechanical Installation; Lifting The Pump; Installing The Pump - Grundfos MAGNA1 Series Installation And Operating Instructions Manual

3. Mechanical installation

3.1 Lifting the pump

Warning
Observe local regulations setting limits for
manual lifting or handling.
Always lift directly on the pump head or the cooling fins when
handling the pump. See fig. 8.
For large pumps, it may be ncessary to use lifting equipment.
Position the lifting straps as illustrated in fig. 8.
Fig. 8 Correct lifting of pump
Do not lift the pump head by the control box
Caution
(red area of the pump). See fig. 9.
Fig. 9 Incorrect lifting of pump

3.2 Installing the pump

The MAGNA1 is designed for indoor installation.
The MAGNA1 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.
The pump must be installed in such a way that it is not stressed
by the pipework. The maximum permissible forces and moments
from pipe connections acting on the pump flanges or threaded
connections can be found on page 34.
The pump may be suspended direct in the pipes, provided that
the pipework can support the pump.
Twin-head pumps are prepared for installation on a mounting
bracket or base plate (pump housing with 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.
Step Action
Arrows on the pump housing
indicate the liquid flow direction
through the pump. The liquid
1
flow direction can be horizontal
or vertical, depending on the
control box position.
Mount the pump with gaskets in
2
the pipework.
Flanged version:
Fit bolts and nuts. Use the right
size of bolts according to system
pressure.
For recommended tightening
3 torque for the bolts used in the
flanged connection,
see page 34.
Threaded version:
Tighten the union nuts.
Illustration
11