Goulds Pumps 3410 - IOM - Manual (Page 20)

LOCATION
!
All equipment being installed must be properly
grounded to prevent unexpected static electric
discharge.
The pump should be installed as near the suction supply as
possible, with the shortest and most direct suction pipe
practical. The total dynamic suction lift (static lift plus
friction losses in suction line) should not exceed the limits
for which the pump was sold.
The pump must be primed before starting. Whenever
possible, the pump should be located below the fluid level
to facilitate priming and assure a steady flow of liquid. This
condition provides a positive suction head on the pump. It
is also possible to prime the pump by pressurizing the
suction vessel.
When installing the pump, consider its location in relation
to the system to assure that sufficient Net Positive Suction
Head (NPSHA) is available at the pump inlet connection.
Available NPSH must always equal or exceed the required
NPSH (NPSHR) of the pump.
The pump should be installed with sufficient accessibility for
inspection and maintenance. A clear space with ample head
room should be allowed for the use of an overhead crane or
hoist sufficiently strong to lift the unit.
NOTE: Allow sufficient space to be able to dismantle
pump without disturbing the pump inlet and discharge
piping.
Select a dry place above the floor level wherever possible. Take
care to prevent pump from freezing during cold weather when
not in operation. Should the possibility of freezing exist during a
shut-down period, the pump should be completely drained, and
all passages and pockets where liquid might collect should be
blown out with compressed air.
Make sure there is a suitable power source available for the
pump driver. If motor driven, the electrical characteristics of the
power source should be identical to those shown on motor data
plate.
FOUNDATION
The foundation must be substantial enough to absorb
vibration. (Hydraulic Institute Standards recommends the
foundation weigh at least five (5) times the weight of the pump
unit.) It must form a permanent and rigid support for the
baseplate. This is important in maintaining the alignment of a
flexibly coupled unit.
Foundation bolts of the proper size should be embedded in the
concrete to a depth of eight (8) to twelve (12) inches and
locked with either a hook around a reinforcing bar or
alternatively, a nut and washer at the bottom. The bolts should
have a sleeve around them at least six (6) times the bolt
diameter in length and at least two (2) bolt sizes larger in I.D.
If a nut and washer are used for locking, the washer should
have an O.D. two (2) sizes larger than the sleeve. Foundation
bolts should be sized .125" less than the anchor bolt holes in
the base.
The foundation should be poured to within .75" - 1.5" of
the finished height. (See Fig. 9) Freshly poured foundations
should be allowed to cure for several days before the unit is
set in place and grouted.
SETTING THE BASEPLATE
Pump units are checked at the factory for align ability to
required tolerances.
Due to flexibility of an ungrouted base and handling in
shipment, it should not be assumed that the unit is in
alignment when it is placed on the rough foundation.
If these directions are followed, the required alignment should
be readily achieved.
Initial or rough alignment must be done prior to grouting of
baseplate. Rough alignment is designated as .020" TIR (Total
Indicator Reading) parallel alignment and .009" TIR per inch of
radius angular alignment (See ALIGNMENT PROCEDURE).
Use blocks at anchor bolts and midway between to position
bottom of base at finished height (See Fig. 10) with foundation
bolts extending through holes in the baseplate. Metal wedges
with a small taper may be used in lieu of blocks and shims.
18
3410 IOM 1/2010
Fig. 9