Xylem A-C Fire Pump – Vertical Turbine Fire Pump AC8499 - Manual (Page 10)

BASE (SOLE PLATE) INSPECTION
Sub Base and Sole Plate are terms in common use to de-
scribe a general class of solid steel plates mounted in grout
(or bolted to steel structures) at the pump-foundation interface.
1. Remove the Sub Base from the Pump Discharge Head,
when shipped assembled.
2. Completely clean the underside of the Sub Base. It is
sometimes necessary to coat the underside of the Sub
Base with an epoxy primer. (This is available as an option.)
3. Remove the rust preventative solution from the machined
topside with an appropriate solution.
SITE WITH CONCRETE FOUNDATION
1. A pump should have adequate space for operation, main
tenance, and inspection.
2. Sub Base mounted pumps are normally grouted on a con-
crete foundation, which has been poured on a solid foot-
ing. The foundation must be able to absorb any vibration
and to form a permanent, rigid support for the pumping
unit.
3. The foundation must be of adequate strength to support
the complete weight of the pump, plus the weight of the
liquid passing through it. A typical installation will have
bolts with a pipe sleeve 2 1 /
2
times the bolt diameter embed
ded in the concrete, sized and located in accordance with
the dimensions given on the Pump Certified Outline
Drawing, if provided. The pipe sleeve allows movement for
final positioning of the foundation bolts to conform to the
holes in the Sub Base flange. See Figure 2.
4. Remove water and/or debris from anchor bolt holes/
sleeves prior to grouting. If the sleeve type bolts are being
used, fill the sleeves with packing or rags to prevent grout
from entering.
5. Carefully lower the Sub Base onto the foundation bolts.
Hand tighten the bolt nuts.
6. Leveling the Sub Base may be done by several methods.
Two common methods are:
A. Leveling the wedges. This is shown in Figure 3.
B. Leveling nuts on the anchor bolts.
Regardless of the method, a machinist level must be used
for leveling.
NOTE:
When using a machinist level, it is important that
the surface being leveled is free of all contaminants, such
as dust, to ensure an accurate reading.
7. Level the Sub Base in two directions at 90 degrees on the
machined surface. The levelness tolerance is 0.005 inches
per foot for commercial, and 0.001 inches per foot for API.
SUB BASE GROUTING
1. Inspect foundation for dust, dirt, oil, chips, water, etc.,and
remove any contaminants. Do not use oil-based cleaners
as grout will not bond to it. Refer to grout manufacturer’s
instructions.
2. Build dam around foundation. Thoroughly wet foundation.
3. Pour grout between Sub Base and concrete foundation, up
to level of dam. Remove air bubbles from grout as it is
poured by puddling, using a vibrator, or pumping the grout
into place. Non-shrink grout is recommended.
4. Allow grout to set at least 48 hours.
5. Tighten foundation bolts.
10
Section 3 - Installation
Foundation /Piping
Figure 2
Figure 3