11
IOM Manual: IOM-0000-CST IOM
Series CST: Submersible Turbine
01/01/2018 - Edition 1A
www.cps-pumps.com
INSTALLING THE PUMP
should remain attached during uprighting of very long units.
Check that all of the steps below have been completed:
• Assemble pump and motor. See page 10.
• Install the bottom piece of column in the pump dis-
charge. Do not lower the unit into the well at this time.
• Complete PRE-INSTALLATION MOTOR AND
DROP CABLE CHECKS AND PREPARATION
on page 10. (testing before splicing cable).
• Complete PRE-INSTALLATION MOTOR AND
DROP CABLE CHECKS AND PREPARATION
on page 10. (cable splicing).
• Complete PRE-INSTALLATION MOTOR AND
DROP CABLE CHECKS AND PREPARATION
on page 10. (testing after splicing cable).
Temporarily connect the drop cable to the electric panel and
start the pump for not more than 2 seconds to check that it will
run.
The pump motor will exert a torque that will tend to unscrew
threaded column pipe connections. For this reason, threaded column
joints must be tightened to a torque of at least 10 ft.-lbs. per rated
HP of the motor (example, 500 ft.-lbs. for a 50 HP motor). If the
pump installation rig cannot produce this amount of torque, it will
be necessary to weld each joint or use some other method to keep the
joints from unscrewing.
If a check valve is to be used and it is not already installed,
install the check valve on the pump. See FIGURE 3. Clean the
threads and apply thread sealant. Check that the arrow on the
check valve is pointed in the direction of flow. Check that the
valve disc or pop- pet is not stuck in the open or closed position.
Tighten the valve securely. See Caution above.
The method of installing the pump, motor, and bottom piece
of column will vary depending on the size and length of these
components:
• For smaller units, the bottom section of column can
be screwed into the pump and the entire pump/ motor/
column assembly handled as one piece.
• For larger units, it may be more practical to install
the pump/motor assembly and the bottom piece of col-
umn pipe separately. A special elevator or clamp may
be required to hold the pump/motor assembly in place
while the first piece of column is being screwed into the
pump discharge.
• For very large units or extremely long units where
the pump and motor have not been assembled, it may
be desirable to lift the pump and motor separately and
assemble the motor to the pump in the vertical posi-
tion. See ASSEMBLY OF PUMP AND MOTOR
on page 10. This method requires a special elevator
or clamp to hold the motor in place while the pump is
being connected and a special elevator or clamp to hold
the pump/motor assembly in place while the first piece
of column is being installed. Eyebolts or some other
means of lifting the motor will also be required.
Rig the first piece of equipment for lifting, hoist it into the
vertical position, and position it over the well. Do not allow the
equipment to drag along the ground as it is lifted. Special care
must be taken when lifting long pumps or pump/motor assem-
blies, since they may sag excessively in the middle when raised
at one end and permanently deform the unit. The shipping skid
Ground the unit when testing. Failure to ground the unit properly
can result in serious or fatal shock. Also the high starting torque of
the motor will cause it to “kick” when power is applied. The unit
should be restrained sufficiently to prevent equipment damage or
personal injury.
On 3-phase units, check for proper rotation during this test. If
the unit kicks clockwise (when viewed from above), the rota-
tion is correct and the wires should be tagged so that they can
be reconnected to the same terminals in the panel. If the unit
kicks counter-clockwise, interchange any two of the three wires
before tagging them. DISCONNECT THE CABLE FROM
THE PANEL.
Install a cable clamp on each side of the cable splice. See FIG-
URE 3. Be careful not to damage the cable. If an air line is to
be installed, route it beside the cable, making sure that it is not
pinched by the clamps. If there is any danger that the splice will
rub against the well casing during installation, it should be pro-
tected by thick rubber chafing pads or by a steel shield. Check
that the grounding system is in place.
