KIRLOSKAR CPHM, Instruction On Installation, Operation And Maintenance

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IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 7 | 48 REVISION NO.1
3 OPERATION:
3.1 Before starting the pump check the following:
3.1.1 The pump rotates freely by hand.
3.1.2 Fill the grease/oil for bearings, if not done earlier. The bearings are packed with
grease/oil initially at the factory, however if the pump is stored for a longer time it is
necessary to refill the grease/oil in the bearings. Check the level of the oil in constant
level oiler is up to the mark.
3.1.3 The sealing liquid connections are properly tightened and adjusted.
3.1.4 The direction of rotation of the driver should correspond to the direction of rotation of
the pump.
3.1.5 The pump casing and suction pipe line is fully primed with liquid.
3.1.6 Valve on delivery side is closed.
3.1.7 The cock for pressure gauge connection is closed.
3.1.8 The gland bolts are properly tightened.
3.2 Starting the pump:
3.2.1 Start the pump. Let the prime mover pick up its full speed.
3.2.2 Open the valve on delivery line gradually.
3.2.3 Open the cock for pressure gauge connection.
3.3 During running the pump check the following things and regulate, if necessary.
3.3.1 The pump is running smooth.
3.3.2 The bearings are not getting abnormally hot.
3.3.3 The gland is properly tightened to ensure sufficient leakage to dissipate heat generated.
Maximum permissible leakage is 60 to 80 drops per minute.
3.3.4 Head and capacity developed by the pump is as specified.
3.3.5 Power consumption is within limit.
3.3.6 Ensure that there is no mechanical friction in the pump.
3.3.7 Stop the pump immediately, if any defects are detected. Do not start the pump unless
defects are rectified. Report immediately to the supplier, if it is not possible to rectify
the defects.
3.4 During stopping the pump:
3.4.1 Close the valve on delivery side.
3.4.2 Stop the motor.
3.4.3 If the pump is not required to be operated for a long time, drain the casing completely.
If the pump is required to be stored for a long time the bearing housing should be
dried internally with hot air and should be flushed with moisture free protective
such as light oil or kerosene.