Flowserve PolyChem GRP - Manual (Page 14)

USER INSTRUCTIONS POLYCHEM GRP ENGLISH 71569132 12-04A
Page 14 of 52
flowserve.com
Figure 4-1
Figure 4-2
Baseplates intended for grouted installation are
designed to use the grout as a stiffening member.
Stilt mounted baseplates, on the other hand, are
designed to provide their own rigidity. Therefore, the
designs of the two baseplates are usually different.
Regardless of the type of baseplate used, it must
provide certain functions that ensure a reliable
installation. Three of these requirements are:

The baseplate must provide sufficient rigidity to
assure the assembly can be transported and
installed, given reasonable care in handling,
without damage. It must also be rigid enough
when properly installed to resist operating loads.

The baseplate must provide a reasonably flat
mounting surface for the pump and driver.
Uneven surfaces will result in a soft-foot condition
that may make alignment difficult or impossible.
Flowserve experience indicates that a baseplate
that has a top surface flatness of 1.25 mm/m
(0.015
in./ft) across the diagonal corners of the
baseplate provides such a mounting surface.
Therefore, this is the tolerance to which we supply
our standard baseplate. Some users may desire
an even flatter surface, which can facilitate
installation and alignment. Flowserve will supply
flatter baseplates upon request at extra cost. For
example, mounting surface flatness of 0.17 mm/m
(0.002 in./ft) is offered on the Flowserve Type E
“Ten Point” baseplate shown in figure 4-1.

The baseplate must be designed to allow the user
to final field align the pump and driver to within
their own particular standards and to compensate
for any pump or driver movement that occurred
during handling. Normal industry practice is to
achieve final alignment by moving the motor to
match the pump. Flowserve practice is to confirm
in our shop that the pump assembly can be
accurately aligned. Before shipment, the factory
verifies that there is enough horizontal movement
capability at the motor to obtain a “perfect” final
alignment when the installer puts the baseplate
assembly into its original, top leveled, unstressed
condition.
4.3.3 Stilt and spring mounted baseplates
Flowserve offers stilt and spring mounted baseplates.
(See Figure 4-2 for stilt mounted option.) The low
vibration levels of PolyChem GRP pumps allow the use
of these baseplates - provided they are of a rigid design.
The baseplate is set on a flat surface with no tie down
bolts or other means of anchoring it to the floor.
General instructions for assembling these baseplates
are given below. For dimensional information, please
refer to the appropriate Flowserve “Sales Print.”
4.3.3.1 Stilt mounted baseplate assembly
instructions
(Refer to figure 4-3.)
a) Raise or block up baseplate/pump above the floor
to allow for the assembly of the stilts.
b) Predetermine or measure the approximate
desired height for the baseplate above the floor.
c) Set the bottom nuts (item 2) above the stilt bolt
head (item 1) to the desired height.
d) Assemble lock washer (item 3) down over the stilt
bolt.
e) Assemble the stilt bolt up through hole in the
bottom plate and hold in place.
f) Assemble the lock washer (item 3) and nut (item 2)
on the stilt bolt. Tighten the nut down on the lock
washer.
g) After all four stilts have been assembled, position
the baseplate in place, over the floor cups (item 4)
under each stilt location, and lower the baseplate
to the floor.
h) Level and make final height adjustments to the
suction and discharge pipe by first loosening the
top nuts and turning the bottom nuts to raise or
lower the baseplate.
i) Tighten the top and bottom nuts at the lock
washer (item 3) first then tighten the other nuts.
Figure 4-3
1. Stilt bolt
2. Nuts
3. Lock washer
4. Floor cup