4 grouting – Flowserve MF User Manual

Page 17

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MF USER INSTRUCTIONS ENGLISH 71569191 12/04

Page 17 of 50

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b) As a minimum, baseplate level shall be set with a

master level or a precision machinist level. Level

should checked before beginning the plate

leveling process by checking level repeatability

when reversing 180 degrees. All base plate level

measurements are taken on the equipment-

mounting surface.

c) The equipment baseplate mounting surface are

to be leveled longitudinally and transversely to

within 200

µ

m/m (0.002 in./ft) for API-610 pumps

and to within 400

µ

m/m (0.005 in./ft) for general

purpose & other pumps.

d) Baseplate level is achieved by adjusting the

jackscrews and then snugging the anchor bolt

nut to hold the base plate in place.

If leveling nuts are used on the

foundation bolts to level the base, they must be

backed off as far as possible prior to grouting the

base in place. Always shim near the foundation

bolts, back off the leveling nuts, and tighten the

foundation bolts. To do otherwise will significantly

lower the structural natural frequency and result in

separation of the base from the grout.

4.4 Grouting

The pump and motor must be aligned

on the base prior to grouting the base in place (see

alignment). Improper grouting will negate the factory

pre-alignment. Grouting provides solid contact

between the equipment and foundation that prevents

lateral movement of the equipment and may also

help in dampening resonant vibrations.

The purpose of grouting is to prevent lateral shifting

of the equipment supports and not to take up

irregularities in the foundation. Only non-shrinking

grout should be used.

4.4.1 Recommended procedure for grouting:

a) Build a wooden form around the outside of the

baseplate to contain the grout. In some cases

the form is placed tightly against the lower edge

of the base and in other cases it is placed a slight

distance from the edge of the baseplate.

b) Saturate the top of the rough concrete foundation

with water, if required before grouting. Add grout

until the entire area within the baseplate is filled,

including the motor pedestal and the space

between the foundation bolt and pipe sleeve. A

stiff wire should be used to work the grout and

release any air pockets.

c) The drain pocket should be plugged before

grouting. Grout in the drain pocket area should

be poured to the drain pocket level and sloped to

the pocket (see 4.4.1.1).

The motor pedestal

should be led to the level shown on the elevation

drawing.

d) The grout is poured and cured slowly to prevent

cracking. The grout is set for a minimum of

about 48 hours. The grout should be allowed to

cure at least 72 hours before it is dynamically

loaded.

e) If desired, the grout surface in the drain pocket

area may be treated or painted to resist oil and

grease.

f) Drainage will flow through the grout encased pipe

from the drain pocket to the pipe coupling on the

baseplate. The drainage can be picked up at this

point and directed to a convenient disposal area.

4.4.1.1 Grouting method

FILL MOTOR PEDESTAL

WITH GROUT TO LEVEL

SHOWN ON ELEVATION

DRAWING

SHIM NEAR

FOUNDATION BOLTS

SLOPE GROUT TO

DRAIN POCKET

ANCHOR BOLT

FORM FOR

GROUTING

FOUNDATION

GROUT

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