Goulds Pumps AF (Axial Flow) (6"-36) MXR Bearings" User Manual

Page 19

AF (6-36) IOM

6. Pour grout through the grout holes in the sub-base,

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.

7. Allow grout to set.

8.

Fill remainder of sub-base with grout. Remove air

as before (Fig. 9)

9. Allow grout to set at least 48 hours.

10. Tighten foundation bolts.

SPRING MOUNTED BASE

Fig. 10 shows a V-belt driven AF pump on a spring
mounted sub-base. Sub-bases supported by spring
pockets assure that the pump remains level, regardless
of vertical movement due to thermal pipe expansion
during operation.

The following is a brief description of the spring pocket
components and their function (see Fig. 11). The
adjusting screw is used to compress or relax the spring.
Turning the screw causes the adjusting screw nut
assembly to move vertically and change the amount of
force the spring exerts against the spring retainer, which

is fastened to the sub-base. The stop nut is to limit the
vertical up motion of the sub-base in case part of the
load is removed from the pump unit when the system is
cold. The jam nut keeps the stop nut from turning during
normal operation when the sub-base has been pushed
down from the thermal expansion. The adjusting screw
holder is a bearing surface for the end of the adjusting
screw and serves to hold the end of the screw in a fixed
location.

The adjusting screw was lubricated at the factory but
should be re-lubricated with heavy protective grease
during the pump installation. The springs and other
parts should be coated with an agent to protect the
surface from corrosion, and a heavy lubricant should be
applied to the adjusting screw holder pocket.

The following steps are used to set the springs and level
the sub-base:

Fig. 11

Fig. 10

SPRING
POCKETS

Fig. 9

BOLT

BASEPLATE

DAM

GROUT

FOUNDATION

Fig. 8

BOLT

BASEPLATE

GROUT

DAM

GROUT

FOUNDATION