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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:
CORRECT
STEEL STRAIGHT EDGE
INCORRECT PARALLEL
MISALIGNMENT
STEEL STRAIGHT EDGE
STEEL STRAIGHT EDGE
INCORRECT ANGULAR
MISALIGNMENT
2) Parallel misalignment – shaft with axis parallel, but not concentric.
This misalignment is checked by using a straight edge as shown in figure given above.
Alternatively it can be checked by any other suitable device like laser.
3.2.1.1 Before commissioning the pump set, please ensure:
A) The pipe connections are flushed and tightened properly.
B) Alignment is proper.
4. Operation
4.1 EQUIPMENT DESCRIPTION:
All ‘DB’ type of pumps are constructed as standard water pumps in accordance with DIN
24255 as far as their main dimensions and performance ratings are concerned. These are
single stage, single suction horizontal shaft, and volute type foot mounted pumps with the
bearing bracket also having a support foot. Mounted pumps with the bearing bracket also
having a support foot. These are centrifugal pumps with enclosed type impeller and are fitted
with standard accessories.
Gland packing or mechanical seal is used to seal the leakage of pumped liquid across the
shaft.
4.2 EQUIPMENT OPERATION.
4.2.1 Before starting the pump check the following:
1) The pump rotates freely by hand.
2) The sealing connections if any, is properly tightened and adjusted.
3) Fill in the grease for bearings, if not done earlier. The bearings are packed with grease
initially at the factory. However, if the pump is stored for longer time it is necessary to
refill the grease bearings.
4) The direction of rotation of driver. It should correspond to the direction of rotation of
pump.
5) The pump casing and the suction pipeline is fully primed with the liquid.
6) Valve on delivery side is closed.
7) Stuffing box packing is properly tightened.
8) The cock for pressure gauge connection is closed.
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