- The suction pipe will be installed with an upward gradient towards the pump (of more than 1%) to
avoid the formation of air bubbles. The pipes and other accessories must be connected in such a way
so as not to create any air intake between the different elements.
- Make sure that the suction pipe is as short and straight as possible and try to avoid any unnecessary
curves or additional length. Do not install any shut-off valve in this section.
6. In systems where suction is operational:
- The installation of a shut-off valve is recommended in the suction pipe to facilitate dismantling and
overhauls.
- Install the suction pipe with an upward gradient towards the pump to avoid the formation of air
bubbles.
3. Alignment
If a simple elastic coupling is used, adjust by placing tapered liners under earth the bed, and center so
that the shaft coupling is within the range indicated in Fig.3.
To center a pump which has been purchased without a driver and which is to be directly driven, insert
liners under the driver, and center so that the shaft coupling is within the range indicated in Fig.3.
The coupling guard must be removed to make centering adjustments. Be sure to replace before
beginning operation.
Fig.3 Misalignment of the couplings
The difference between Gap A and Gap B should be smaller than 0.1 mm.
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