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8
BASE PLATE SETTING (BEFORE PIPING)
NOTE: This procedure assumes that a
concrete foundation has been prepared with
anchor or hold down bolts extending up ready
to receive unit. It must be understood that
pump and motor have been mounted and
rough aligned at the factory. If motor is to be
field mounted, consult factory for
recommendations. ITT AC Fire Pump
Systems cannot assume responsibility for
final alignment.
FIGURE 6 – SETTING BASE PLATE AND
GROUTING
a. Use blocks and shims under base for
support at anchor bolts and midway
between bolts, to position base
approximately 1" above the concrete
foundation, with studs extending through
holes in the base plate.
b. By adding or removing shims under the
base, level and plumb the pump shaft and
flanges. The base plate does not have to
be level.
c. Draw anchor nuts tight against base, and
observe pump and motor shafts or
coupling hubs for alignment. (Temporarily
remove coupling guard for checking
alignment.)
d. If alignment needs improvement, add
shims or wedges at appropriate positions
under base, so that retightening of anchor
nuts will shift shafts into closer alignment.
Repeat this procedure until a reasonable
alignment is reached.
NOTE: Reasonable alignment is defined as
that which is mutually agreed upon by pump
contractor and the accepting facility (final
operator). Final alignment procedures are
covered under “Alignment Procedures.”
e. Check to make sure the piping can be
aligned to the pump flanges without
placing pipe strain on either flange.
f. Grout in base plate completely (See
“Grouting Procedure”) and allow grout to
dry thoroughly before attaching 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 6).
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.
SEE ANSI/OSHA COUPLER GUARD
REMOVAL/INSTALLATION
(SEE BELOW)
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,
GROUT ONLY TO
TOP OF BASE RAIL.
CONCRETE
FOUNDATION
NOTE:
TO KEEP SHIMS IN
PLACE ALLOW GROUT
TO FLOW AROUND
HOLD DOWN LUGS.
ALLOW 1" FOR
SHIMS. PLACE ON
BOTH SIDES OF
ANCHOR BOLTS.
APPROX. 1" GAP
PUMP BASE
RAIL
GROUT
LEVELING OF PUMP BASE
ON CONCRETE FOUNDATION.