Flowserve U-MAG INNOMAG - Manual (Page 15)

U-MAG ENGLISH 26999990 10-14
Page 15 of 40
4.3 Foundation
A pump should be located near the
supply of liquid and have adequate space for
operation, maintenance, and inspection. Baseplate
mounted pumps are normally placed on a concrete
foundation, which has been poured on a solid footing.
The foundation must be able to absorb any vibration
and to form a permanent, rigid support for the
pumping unit.
a) Prepare site - Inspect foundation for dirt, oil,
chips, water, etc. and remove any contaminants.
b) Install mounting bolts using hole pattern
determined by baseplate size. Sleeve-type and J-
type bolts are commonly used to allow movement
for final bolt adjustment. Follow best company
standards and practices.
4.3.1 Protection of openings and threads
When the pump is shipped, all openings are covered.
This protection/covering should not be removed until
installation. If, for any reason, the pump is removed
from service, this protection should be reinstalled.
4.3.2 Rigid baseplates - overview
The function of a baseplate is to provide a rigid
foundation under a pump and its driver that maintains
alignment between the two. Baseplates may be
generally classified into two types:

Foundation-mounted, grouted design (Figure 4-1)

Stilt mounted, or free standing. (Figure 4-2.)
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. Experience indicates that a baseplate
with 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 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. U-MAG
TM
pumps
have a close-coupled configuration only and
alignment is achieved by the mating of precision-
machined surfaces. See section 4.8 for more
information.
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 U-
MAG™ 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 [2] above the stilt bolt head
[1] to the desired height.
d) Assemble lock washer [3] down over the stilt bolt.