6EM Thru 18GM - 1100 Vertical Turbine Pumps 17
Assembly procedure for underground
discharge (U.G.D.) units closely parallels
that of standard pumps with above ground
discharge heads. Always refer to the
Layne/Verti-Line submittal drawings and
setting plan to determine the proper location
of discharge elbow centerline.
If the packing box of the U.G.D. pump is
lubricated by the pumped media, it will be
necessary to provide an air release valve in
the top column. This will prevent air from
becoming trapped in the column above the
discharge elbow, therefore allowing the
media to lubricate the packing box bushing
and packing. If the pump's total dynamic
head is not sufficient to raise the media to
the altitude of the packing box, an alternate
method of lubrication must be provided, i.e.,
grease lubrication.
7. For ease of installation, remove the
packing box if shipped assembled to the
discharge head.
8. Thread the top column adapter flange
onto the top column and tighten with
appropriate wrenches. Install column
flange gasket and secure the discharge
head to the column adapter flange.
When attaching the column to the
discharge head, make sure the register
fit is fully engaging the head and the
flange is timed with the pipe tapped hole
in the discharge head.
9. After attaching the column to the
discharge head, remove the column
clamp and lower the unit to the
foundation. Tighten mounting bolts.
Check the shaft to see if it is centered in
the packing box opening in the head. If
the shaft is not centered, it could be an
indication of a bent shaft, column not
seated properly, or the unit is not
properly plumbed. Any or all of these
problems must be corrected before
proceeding with the installation of the
unit.
10. Apply lubricant to the packing box
bushing and install the packing box on
the discharge head.
11. Install the packing and glands into the
packing box. Install gland bolts and
nuts. Allow the gland nuts remain loose.
Packing adjustment will be performed
later with the pump operating. If a
mechanical seal is employed, refer to the
Mechanical Seal section of this manual.
Oil Lube Enclosed Line Shaft
Flanged Column
1. Using an appropriate hoisting system, lift
the pre-assembled bowl assembly and
position it above the well. Lower the
bowl assembly partially into the well and
attach a pipe clamp (see Figure #1) to
the upper most bowl directly under the
bowl discharge flange. Lower the
assembly, allowing it to be suspended on
the foundation via the pipe clamp.
2. Before proceeding with assembly, lay out
all line shaft, enclosing tube, column and
connectors. Inspect and identify all
items and arrange them in the order in
which they will be assembled. Oversized
diameter enclosing tube sections (if
used) must be installed at the bottom of
the assembly, directly above the pump
discharge bowl. When oversized tube
sections are used, special stepped
connector bearings are provided in order
to adapt them to the remaining.
Pre-assemble matching sets of shaft,
enclosing tube and column by sliding
them inside each other and attaching
connectors and couplings. This will
allow each set of column/enclosing
tube/shaft to be hoisted into place and
assembled as demonstrated in Figure
#3.
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