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This is a proprietary document of Kirloskar Brothers Limited, Kirloskarvadi-416308, Dist-Sangli (India)
ISSUE DATE: 17.09.2010 LAST REV. DATE:
GENERAL INSTRUCTIONS FOR MAINTENANCE, OPERATION
& MAINTENANCE OF
KIRLOSKAR CENTRIFUGAL PUMPS
WARNING
The equipment supplied is designed for specific capacity, speed pressure and temperature. Do not use
the equipment beyond the capacities for which it is manufactured. The equipment manufactured is
also shop tested for satisfactory performance and if it is operated in excess of the conditions for which
it is manufactured, the equipment is subjected to excessive stresses and strains.
LOCATION
The pump should be located as near the liquid source as possible. This will minimize suction lift and
pump will give better performance.
Ample space should be provided on all the sides so that the pump can be inspected while in operation
and can be serviced whenever required.
FOUNDATION
The foundation should be sufficiently substantial to sustain any vibrations and to form a permanent
rigid support for the base plate. This is important in maintaining the alignment of a directly connected
unit. A concrete foundation on a solid base is advisable. Foundation bolts of the proper size should be
embedded in the concrete located by a drawing or template. A pipe sleeve of two and one half
diameter larger than the bolt should be used to allow movement for the final position of the
foundation bolts. Earthing is required to be provided to the base plate.
ALIGNMENT
Pumps and the drivers supplied by the manufacturers, mounted on a common base plate are
accurately aligned before dispatch. However as the alignments are likely to be disturbed during transit
to some extent and hence must not be relied upon to maintain the factory alignment. Re-alignment is
necessary after the complete unit has been leveled on the foundation and again after the grout has
been set and foundation bolts have been tightened. The alignment must be checked after the unit is
piped up and re-check periodically.
FLEXIBLE COUPLING
A flexible coupling will not compensate for the misalignment of the pump and driver shafts. The
purpose of the flexible coupling is to compensate for temperature changes and to permit the
movement of the shafts without interference with each other while transmitting power from the driver
to the pump.There are two types of misalignments.
1) Angular misalignment – shaft with axis concentric, but not parallel.
2) Parallel misalignment – shaft with axis parallel, but not concentric.
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