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3.1.6. Valve on the delivery side is closed.
3.1.7. Stuffing box packing is properly tightened.
3.1.8. The cock for the pressure gauge connection is closed.
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 side slowly.
3.2.3 Open the cock for pressure gauge connection.
3.3 During running the pump
3.3.1 The pump is running smooth.
3.3.2 The flow of sealing liquid water is uninterrupted.
3.3.3 Leakage through stuffing box is normal. There should be leakage is 60 to
80 drops/ min.
3.3.4 The bearings are not getting heated up excessively.
3.3.5 Head and capacity developed by the pump is as specified.
3.3.6 Power consumption is within the limit.
3.3.7 Ensure that there is no mechanical friction in the pump.
3.3.8 Stop the pump immediately, if any defects are noticed. Do not start the
pump unless the 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, then drain the
casing completely.
4. TECHNICAL DATA:
4.1 Direction of rotation
The standard direction of rotation is anticlockwise when viewed from
driving end. The pump suitable for clockwise rotation can also be supplied
against specific requirements.
4.2 Rotational speed
Normally the pumps are supplied suitable for speed of 1450 rpm. Please
contact supplier if the pump is to be used for higher speeds.
4.3 Bearings
The shaft is supplied with antifriction ball bearings at driving end and non-
driving end. The details of the bearings are given in the technical data
chart. The designations of bearings are as per SKF catalogue. However,
equivalent bearings in type, capacity and dimensions are also used.
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