IOM/GK(P)/CONICAL ISSUE DATE: 10.11.2015
Page 62 LAST REV. DATE: 01.08.2019
GENERAL INSTRUCTIONS FOR INSTALLATION, 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-checked 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.
Maximum allowable misalignment is 1°.
