Xylem 8100 Series Centrifugal Pumps AC2515 REV.C - Manual (Page 9)

piping to pump. (24 hours is sufficient time
with approved grouting procedure.)
GROUTING PROCEDURE
Grout compensates for uneven foundation,
distributes weight of unit, and prevents shifting.
Use an approved, non-shrinking grout, after
setting and leveling unit (See Figure 9).
9
a. Build strong form around the foundation to
contain grout.
b. Soak top of concrete foundation
thoroughly, then remove surface water.
c. Base plate should be completely filled with
grout.
d. After the grout has thoroughly hardened,
check the foundation bolts and tighten if
necessary.
e. Check the alignment after the foundation
bolts are tightened.
f. 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.
ALIGNMENT PROCEDURE
NOTE: A flexible coupling will only compensate for
small amounts of misalignment. Permissible
misalignment will vary with the make of coupling.
Consult coupling manufacturer’s data when in
doubt.
Allowances are to be made for thermal expansion
during cold alignment, so that the coupling will be
aligned at operating temperature. In all cases, a
coupling must be in alignment for continuous
operation. Even though the coupling may be
lubricated, misalignment causes excessive wear,
vibration, and bearing loads that result in
premature bearing failure and ultimate seizing of
the pump. Misalignment can be angular, parallel,
or a combination of these, and in the horizontal
and vertical planes. Final alignment should be
made by moving and shimming the motor on the
base plate, until the coupling hubs are within the
recommended tolerances measured in total run-
out. All measurements should be taken with the
pump and motor foot bolts tightened. The shaft of
sleeve bearing motors should be in the center of
its mechanical float.
NOTE: Proper alignment is essential for correct
pump operation. This should be performed after
base plate has been properly set and grout has
dried thoroughly according to instructions. Final
alignment should be made by shimming driver
only. Alignment should be made at operating
temperatures.
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before
servicing. Failure to follow these instructions could
result in serious personal injury or death and
property damage.
ANSI/OSHA COUPLER GUARD
REMOVAL/INSTALLATION
WARNING: Unexpected Start-up Hazard
Disconnect and lock out power before
servicing. Failure to follow these instructions could
result in serious personal injury or death and
property damage.
NOTE: Do not spread the inner and outer guards
more than necessary for guard removal or
installation. Over spreading the guards may alter
their fit and appearance.
Removal
a. Remove the two capscrews that hold the
outer (motor side) coupler guard to the
support bracket(s).
b. Spread the outer guard and pull it off the
inner guard.
c. Remove the capscrew that holds the inner
guard to the support bracket.
d. Spread the inner guard and pull it over the
coupler.
Installation
a. Check coupler alignment before
proceeding. Correct if necessary.
b. Spread the inner guard and place it over
the coupler.
c. With the inner guard straddling the
support bracket, install a capscrew
through the hole (or slot) in the support
bracket and guard located closest to the
pump. Do not tighten the capscrew.
d. Spread the outer guard and place it over
the inner guard.
e. Install the outer guard capscrews by
following the step stated below which
pertains to your particular pump:
i. For pumps with a motor saddle support
bracket: Ensure the outer guard is