20
2005 Doctor Martin Luther King Jr Street
Indianapolis, IN 46202
Rev 07-2021
INSTALLATION OF THE DISCHARGE HEAD
With the pump and all the standard-
length column and shaft sections
installed in the well or sump, the next
step is to prepare the discharge head and
top column section for installation.
Exceeding the load limitations of
the hoist may result in failure of the
discharge head, serious damage to
other parts of the pump, and grave
injury to nearby personnel. Refer to
the construction drawing for weights
of pump components.
The size designation of the
discharge head is given in raised
numbers cast on the side or top of the
mounting plate. The discharge head may
be shipped from the factory without the
driver assembled to it. Place the
discharge head on a clean work surface
near the sump. If the discharge head has
become soiled in shipping and handling,
clean it thoroughly, inside and outside.
If a sole plate is to be used and has
not yet been installed and grouted, check
the mounting surface at the top of the
sole plate for possible damage or debris.
Remove any burrs and clean the surface
thoroughly. If the sole plate has been
painted, remove the paint from both the
machined and the non-machined sides.
Mount the discharge head on the
machined side of the sole plate, and
fasten it with the bolts or cap screws
provided.
When the discharge outlet of the
pump is a plain pipe (no threads or
flange) and a flexible discharge coupling
is to be used, the parts of the coupling
must be installed on the pump outlet
and/or discharge piping before locating
the discharge head in its final position.
The top tube section consists of
three distinct pieces of tubing coupled by
means of two shaft bearings. The lower
tube is a standard 5′ length; the middle
tube is similar to a standard tube except
for its length, 3′4″. The upper tube can
be identified by the external thread at the
top end. The two lower pieces should be
butted tightly together, but the upper
piece should be left loose enough to be
removed easily.
Carefully measure the overall length
of the assembled top tube section,
deducting an amount for the looseness of
the top piece, if necessary. In most
installations, it will be necessary to cut
the top tube section to suit the job. The
measurements described below will be
used to determine the amount (if any) to
be cut off. Lay a straight edge across the
top of the last installed standard tube
section (not including the bearing), and
measure its “stick-up”) above the top of
the column section (see Fig. 13). This
measurement should be approximately
10 inches. Add the actual measurement
to the overall length of the three-piece
top tube assembly.
Next, measure the distance from the
upper surface of the top column flange
to the lower end of the top column
section. Add this measurement to the
dimension measured in the previous
paragraph: the total length of the top
tube assembly and the stick-up should
not exceed the sum of your
measurements by more than ½″. If the
difference is greater than ½″, the upper
end of the top tube section must be cut
off to keep within the ½″ limit.
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