Grundfos S Serie Manual Del Usuario página 16

Permanent, horizontal, dry installation, installation type H
The pump is bolted to the inlet and outlet pipes by flange
connections.
Proceed as follows:
1. Mark and drill mounting holes in the concrete foundation.
2. Fit the base plate or base stand on the concrete with anchor
bolts. Check the pull-out strengths required for bolts at the end
of this section.
3. Check that the base plate or base stand is horizontal or vertical.
4. Fasten the pump to the base plate or base stand.
To facilitate service on the pump, fit isolating valves on either
side of the pump.
5. Fit the inlet and outlet pipes and isolating valves, if used, and
ensure that the pump is not stressed by the pipes.
6. Adjust the length of the power cables by coiling them up on a
relief fitting to ensure that the cables are not damaged during
operation. Make sure to have enough cable length to be able to
service the pump. Fasten the relief fitting to a suitable hook.
Make sure that the cables are not sharply bent or pinched.
7. Connect the power and the control cables according to the
wiring diagrams.
In horizontal installations, use a reducer between the inlet
pipe and the pump. The reducer must be eccentric and
has to be installed the way its straight edge is pointing
upwards. Therefore the accumulation of air in the inlet
pipe and the risk of operation disturbance are eliminated.
Make sure that the pipes are installed without the use of
undue force. Do not allow loads from the weight of the
pipes to be carried by the pump. Use loose flanges to
ease the installation and to avoid pipe tension at flanges
and bolts.
Do not use elastic elements or bellows in the pipes. Never
use these elements to align the pipes.
The inlet and outlet pipes are bolted to the pump by flange
connections.
5.3.3 Column pipe installation
Install pumps for column pipe installation permanently in a column
pipe. Grundfos usually does not supply the column pipe.
Dimensioning of the column pipes is indicated in the pump-specific
dimensional drawings.
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Submerged installation in vertical column pipe, installation type ST
Proceed as follows:
1. Fit the seat ring to the bottom of the column pipe.
2. Clean out debris from the pit.
3. Before lowering the pump into the column pipe, check the
cables for cuts or ruptures which may have been caused by
rough handling during transportation or installation.
4. Lower the pump into the column pipe by a certified chain
secured to the lifting bracket. The pump lays on the conical
surface of the seat ring. The friction between the conical
surfaces prevents the pump from rotating. As an extra
precaution, there are three guide pins on the seat ring that limit
the possible rotation to maximum 60 °.
5. Hang up the end of the chain above or at the top of the column
pipe, so that the chain cannot come into contact with the pump.
6. Adjust the length of the cables, but ensure to have enough
cable length to be able to service the pump. Make sure that the
cables are not sharply bent or pinched. Fix the cables, so that
there is no extra slack inside the column pipe. In case of long
column pipes, it may be necessary to arrange cable support for
the cables inside the column pipe. If so, contact Grundfos.
7. Connect the power and the control cables.