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5. Check the alignment after the foundation bolts
are tightened.
6. Approximately 14 days after the grout has been
poured or when the grout has thoroughly dried,
apply an oil base paint to the exposed edges of the
grout to prevent air and moisture from coming in
contact with the grout.
Suction and discharge piping
General
When installing the pump piping, be sure to observe
the following precautions:
Piping should always be run to the pump.
Do not move pump to pipe. This could make final
alignment impossible.
Both the suction and discharge piping should be
independently supported near the pump and
properly aligned so that no strain is transmitted to the
pump when the flange bolts are tightened. Use pipe
hangers or other supports at necessary intervals to
provide support. When expansion joints are used in
Figure 9- Setting baseplate and grouting
the piping system they must be installed beyond the
piping supports closest to the pump. Tie bolts should
be used with expansion joints to prevent pipe strain.
Do not install expansion joints next to the pump or
in any way that would cause a strain on the pump
resulting from system pressure changes. lt is usually
advisable to increase the size of both suction and
discharge pipes at the pump connections to decrease
the loss of head from friction.
Install piping as straight as possible, avoiding
unnecessary bends. Where necessary, use 45-degree
or long sweep 90-degree fitting to decrease friction
losses.
Make sure that all piping joints are air-tight.
Where flanged joints are used, assure that inside
diameters match properly.
Remove burrs and sharp edges when making up
joints.
Do not "spring" piping when making any connections.
Provide for pipe expansion when hot fluids are to be
pumped.
