Mechanical Installation - Grundfos Medium UPM Series Data Booklet

8

Mechanical installation

Mechanical installation must be carried
out by trained persons in accordance
with local regulations.
The pump must always be installed with
horizontal motor shaft within ± 5 °.
Arrows on the pump housing indicate
the liquid flow direction through the
pump. The pump is designed to be
installed with horizontal shaft pumping
upwards, downwards or horizontally.
For mounting dimensions see the data sheets.
• The pump must be installed in the system in such a
way that no major amount of air flowing through or
gathering in the pump housing affects the pump
when it is out of operation.
• If an additional non-return valve is installed in the
flow pipe, there is a high risk of dry-running,
because the air cannot pass the valve.
• It must be possible to vent the system at the highest
part of each system segment.
• Permanent venting is recommended.
Fig. 34 Control box positions
Fig. 35 Mechanical installation
24
Medium UPM