Agriculture Reference
In-Depth Information
12.9 Pump Installation, Operation, and Control
12.9.1 Pump Installation
12.9.1.1 Installation
The pump should be located as close as practical to the liquid source, this will
minimize inlet losses. Improper location of the pump may result in decreased pump
performance. Other points that should be considered are the following:
•
The foundation should be designed to hold the pump assembly rigid and to absorb
any vibration or external strain that may be encountered. A concrete foundation
on a solid base should be adequate.
•
Pump and driver should be accessible for inspection and maintenance.
•
On permanent installations, it is recommended that the pumping assembly be
secured to the foundation by anchor bolts.
12.9.1.2 Alignment
Some pumps are shipped on baseplates without drivers. For these units, install and
tighten each coupling half on driver and pump shafts. Place driver on baseplate and
set proper distance between shafts and coupling hubs.
Final alignment of pump and driver should take place after unit is secured to
foundation, and after the suction and discharge piping is connected to the pump. The
objective of any aligning procedure is to align shafts (not align coupling hubs) by
using methods that cancel out any surface irregularities, shaft-end float, and eccen-
tricity. Grouting is recommended to prevent lateral shifting of baseplate, not to take
up irregularities in the foundation. For installations requiring grouting, a baseplate
designed specifically for this purpose is needed. For pumps driven through a sepa-
rate gearbox or other device, first align device relative to pump, and then align driver
relative to device.
Alignment of pump and its driver should be checked and corrected, if nec-
essary, at least every 6 months. If system experiences an unusual amount of
vibrations or large variations in operating temperatures, this should be done often.
Well-maintained alignment will help insure maximum equipment life.
12.9.1.3 Installation of Submersible Pump
The following steps should be followed in installing a submersible pump:
•
Lift the motor vertically and lower into well, resting the motor on the “U” plate.
•
Make temporary electric connection to motor, bump starter to determine correct
rotation (counter clockwise).
•
With the motor suspended in the well, on the “U” plate attach an elevator or
clamps to pump end, lifting it vertically over the motor.
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