6EM Thru 18GM - 1100 Vertical Turbine Pumps 25
VERTICAL HOLLOW SHAFT DRIVERS
General
Hollow shaft drivers provide a hollow tube
through the rotor. The pump shaft passes
through the tube and attaches at the top of
the driver. Most turbine pump designs
provide a shaft coupling above the packing
box or tube tension nut. This allows the
motor to be set in place and the top section
of shaft installed later, through the top of the
driver. Other shaft/head designs have no
such coupling and require that the motor be
lowered over the projecting top shaft.
CAUTION
Care should be taken to avoid motor/shaft
contact during this process as a bent top
shaft could result.
Register fits on the bottom of the driver base
and on the top of the discharge head (motor
pedestal) will facilitate approximate driver
positioning. The fits are generally loose
enough to accommodate the additional
movement required for precision alignment.
After precision alignment is achieved, the
driver is permanently held in position by the
clamping force of the mounting bolts.
Doweling or pinning of the driver is not
required, but may be implemented at the
owner's option.
A. Before installation, remove the driver top
cover. Remove the driver clutch coupling
(or non-reverse ratchet if so equipped).
This will facilitate top shaft installation
and rotation check.
B. Using an appropriate hoisting system, lift
the driver over the discharge head
mounting surface and carefully lower into
position. Engage the driver base over
the register fit of the mounting surface.
C. Bolt the driver down. If an electric
motor is used, now is the time to
connect it to the electrical source and
to verify correct rotation. If a right
angle gear is used proceed to step 4.
D
ANGER
Electrical motors must be installed
and operated only by qualified,
trained electrical technicians. Consult
the motor manufacturer or the motor
manual to assure that all installation
and safety procedures are fully
understood and implemented. Always
lock out all controls and or supplies
and verify driver cannot be started
before installing or servicing
electrical apparatus.
CAUTION
Oil lubricated drivers and right angle
gears are shipped dry and require an
initial fill of the manufacturer's
recommended lubricant prior to
bump-start.
With non-reverse ratchets (if so equipped)
removed or disabled, "bump" the motor for
rotation. This is generally accomplished on
three-phase motors by engaging and
immediately disengaging the power switch.
It is seldom necessary to engage the power
source for more than one second to
determine motor rotation.
Note the direction of motor rotation. If the
motor rotates counter clockwise as viewed
from the top, the rotation is correct and
installation may proceed. If the motor
rotates clockwise as viewed from the top,
reverse any two of the three power leads
and motor rotation will be reversed.
CAUTION
Line shaft threads are left hand rotation.
Operation of the pump in a clockwise (as
viewed from the top) direction will cause the
line shaft couplings to unthread, causing
serious damage to the pump.
CAUTION
Assure that no burrs or foreign matter exists
on the shaft threads.
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