24
2005 Doctor Martin Luther King Jr Street
Indianapolis, IN 46202
Rev 07-2021
Never attempt to align the
discharge head using a spirit
(carpenter’s) level. If the pump
column does not hang freely in the
well, as might be the case when the
well is drilled at a slight slant, leveling
the discharge head will not insure the
necessary shaft alignment and
clearance in the driver spindle. The
discharge head base must be square
with the pump shaft regardless of the
result indicated by a spirit level. A
bent shaft could occur, causing early
pump failure and expensive repair.
Place a machinist's level on the
driver mounting surface of the discharge
head, orienting it parallel with one of the
edges of the base. Move the wedges or
add more shims as necessary until the
level reading reaches 0.0005" per foot.
Reorient the level on the same
surface, 90º from the original position.
Again adjust the wedges or shims until a
0.0005" level reading is reached, taking
care not to upset the levelness is the first
direction. After each adjustment, check
for levelness in both directions. Push in
or add to any loose shims to distribute
the weight evenly. The discharge head
must be level within 0.0005" with all
wedges or shims bearing tightly against
the base or sole plate.
Install nuts on the foundation bolts
and tighten them gradually and
uniformly. Re-check the level readings
in both directions. If necessary, loosen
the foundation bolts and re-adjust the
wedges or shims, tighten the bolts again
and re-check the level readings.
GROUTING THE DISCHARGE HEAD/SOLE PLATE
After the discharge head is at the
correct location and leveled with a
precision level, the discharge head
and/or sole plate need to be grouted to
the foundation.
Use only non-shrinking grouting
material for grouting the discharge head/
sole plate to the foundation.
Build a dam on the foundation,
enclosing an area around the discharge
head that includes all of the alignment
wedges. The top of the dam should be
approximately ½ inch above the bottom
of the discharge head base (see Figs. 1a
and 1b on page 6).
Pour the grouting material into the
dammed-in area, and force it between
the discharge head and the foundation all
around. Level off the grout flush with
the top of the dam. Allow the grout to
cure at least 48 hours before tightening
the foundation bolts or starting the
pump.
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