18 6EM Thru 18GM - 1100 Vertical Turbine Pumps
Non-standard lengths of column,
enclosing tube and line shafting must be
assembled at the top of the pump as
previously outlined.
Using an appropriate hoisting system, lift
the shaft/tube/column assembly and
position it above the suspended bowl.
Slide the lower end of the shaft out of the
enclosing tube about one foot. Refer to
Figure #4 for lifting of this assembly.
3. Lower the shaft/tube/column assembly
into position. A line shaft coupling is to
already be in place on the pump shaft.
Assure that the threaded shafts and
coupling are clean and free of burrs.
Lubricate threads with light oil. Thread
the shafts into the coupling so that both
shafts engage the coupling equally. The
shafts should butt together solidly in the
center of the coupling. Threads should
be exposed on both ends of the
coupling. Assure that no foreign matter
exists between the shaft ends. Such a
condition will cause shaft misalignment
and will result in vibration and
accelerated bearing wear.
IMPORTANT
Line shaft threads and enclosing tube
threads are left hand rotation. Tighten
shafts, enclosing tubes and couplings
securely with pipe wrenches.
4. Assure that all enclosing tube threads
and connector bearing threads are clean
and free of burrs. Coat connector
bearing threads with a sealant such as
Loctite PST #567, Permatex No. 2
non-hardening gasket sealant prior to
assembly. Silicone sealants are also
permissible. This step is very important
in preventing entry of the pressurized
pumped media into the enclosing tube.
Thread the enclosing tube onto the
connector bearing and secure with chain
wrenches.
5. Clean all coating or foreign materials
from the column flange faces prior to
assembly. Lower the shaft/tube/column
assembly into position and coat the
flange faces with sealant. Assure that
the flange faces engage squarely and
that all bolt holes align. Install bolts and
nuts and tighten.
6. Lift the column and bowl assembly
slightly. Remove the pipe clamp from
the bowl and lower the assembly into the
well. Reinstall the pipe clamp on the
upper end of the column directly below
the upper flange. Lower the assembly
until the pipe clamp supports the
assembly on the foundation.
IMPORTANT
Measure the shaft projection. It should
conform to the shaft projection
measurement taken and recorded
previously on the bowl assembly.
7. Repeat the above steps until complete.
Continue to measure the shaft projection
after assembly of each shaft/tube/-
column section. Before installing the
discharge head, pre-lubricate the
connector bearings by pouring oil down
the enclosing tube. Approximately one
pint of oil should be added for every 20
ft. of pump length.
NOTE
Although standard column length is 10
feet, some non-standard lengths of
column, enclosing tube and shaft may be
required to accomplish the specified
overall length of the pump. These non-
standard lengths should be installed at
the top of the column, directly under the
discharge head.
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