Installation
2.
FLEXIBLE COUPLED PUMPS
CLOSE COUPLED PUMPS
A. Location
B. Foundation
C. Leveling
D. Alignment
E. Piping
F. Typical Installation
In order to insure that pumping
equipment is installed properly and
to obtain reliable pump operation, it
is recommended that only experi-
enced, qualified erecting engineers
undertake this task. Read the
instructions thoroughly before
beginning.
2A Location
The first consideration for locating a
pump is elevation. The lowest
possible elevation using the
shortest possible suction piping is
usually the best. Questions
regarding possible locations should
be resolved by making inlet head
calculations including all friction
losses. The one producing the
highest inlet pressure should be
selected. One reason for this
precaution is that, the greater the
inlet pressure, the less likelihood of
NPSH problems. Also a flooded
suction is particularly helpful on
start-up when the seals or the
entire pump can be ruined because
it is not properly primed and purged
of air.
A dry, easily accessible location is
also important. Allow ample
clearance around the unit for free
air circulation. If a dry location is
not available, the pump can be
mounted on a foundation, above
the floor. Specify motor enclosure,
pump materials, or coatings to suit
the worst conditions expected.
Place the pump so that it can be
easily inspected and serviced
during operation. Sufficient head
room should be provided, particu-
larly when lifting devices will be
used for heavier assemblies.
2B Foundation
Baseplates alone are not rigid
enough to maintain alignment of
the unit. The pump foundation is
used as a support for the base-
plate to maintain alignment of the
unit. If the baseplate is to be
grouted to the foundation, it is only
necessary to embed the edges. It
is unnecessary to completely fill
under the baseplate. DO NOT
grout the unit to the foundation
until it has been properly aligned.
The foundation must be a perma-
nent rigid installation of
concrete or other material of
sufficient mass to absorb all
normal vibrations. Locate the
foundation bolts using a layout or
template in relation to the suction
and discharge piping. If concrete
is being used, foundation bolts of
the specified size can be enclosed
in a pipe sleeve two to three
diameters larger than the bolts to
compensate for minor variations in
alignment.
Close coupled pumps can be
mounted on a steel base prior to
installation or mounted directly to
the foundation. Place shims under
one or more of the motor feet so
that strain and distortion will not
result when the mounting bolts are
tightened.
Foundation
Figure 2-2
1/4"
Finished
Grouting
3/4" to 1 1/2"
Allowance for
Grout
Dam
Baseplate
Grout
Leveling Wedges or Shims - Left in Place
Pipe Sleeve
Washer
Lug
Top of
Foundation Left
Rough - Clean
and Wet Down
Figure 2-1
2C Leveling (Flexible Coupled
Pumps Only, Refer to Figure 2-1)
If the unit is received with the pump
and motor mounted on the base-
plate:
1. Place the unit in position.
2. Disconnect the coupling halves.
Do not reconnect until all
alignment procedures have been
completed.
3. Support the baseplate on metal
shims or wedges having a small
taper. (Refer to Figure 2-2)
a. Place shims close to the
foundation bolts. (Refer to
Figure 2-3)
b. Also place shims close to
where the greatest weight is
located.
4. Check the baseplate for distor-
tion:
a. Place a straightedge along the
baseplate to determine if it is
distorted.
b. Adjust the shims until the
baseplate is not distorted.
5. Use a section of pipe to deter-
mine if the inlet and discharge
openings are vertical and located
properly.
6. Correct the positions, if neces-
sary, by adjusting the shims.
Page 504
T51 SERIES
