Pump Operation Precautions - Goulds Pumps 3700 Installation, Operation And Maintenance Manual

Commissioning, Startup, Operation, and Shutdown
4. Immediately check the pressure gauge to ensure that the pump quickly reaches the correct
discharge pressure.
5. If the pump fails to reach the correct pressure, perform these steps:
a) Stop the driver.
b) Prime the pump again.
c) Restart the driver.
6. Monitor the pump while it is operating:
a) Check the pump for bearing temperature, excessive vibration, and noise.
b) If the pump exceeds normal levels, then shut down the pump immediately and correct
7. Repeat steps 5 and 6 until the pump runs properly.

Pump operation precautions

General considerations
CAUTION:
• Vary the capacity with the regulating valve in the discharge line. Never throttle the flow from the
• Do not overload the driver. Driver overload can result in unexpected heat generation and equipment
• Make sure to operate the pump at or near the rated conditions. Failure to do so can result in pump
NOTICE:
On ring oil-lubricated pumps, remove oil ring viewing port plugs to verify the following:
• The oil rings are properly positioned in the grooves on the shaft.
• The oil rings are turning.
• The oil rings are throwing oil.
Replace the plugs.
NOTICE:
• On pure or purge-oil mist-lubricated units, remove the viewing port plugs to verify that oil
• Make sure the oil level has remained steady by checking the oiler.
• Check the bearing temperatures using a pyrometer or other temperature-measuring
• For pumps with auxiliary piping, make sure that proper flows have been established and
• Establish baseline vibration readings in order to determine normal running conditions. If
• Monitor all gauges to ensure that the pump is running at or near rating and that the suction
52 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
the problem.
A pump can exceed normal levels for several reasons. See Troubleshooting for
information about possible solutions to this problem.
suction side since this can result in decreased performance, unexpected heat generation, and
equipment damage.
damage. The driver can overload in these circumstances:
• The specific gravity of the pumped fluid is greater than expected.
• The pumped fluid exceeds the rated flow rate.
damage from cavitation or recirculation.
mist is flowing properly. Replace the plugs.
device. Monitor the bearing temperature frequently during initial operation in order to
determine if a bearing problem exists, as well as to establish normal bearing operating
temperature.
that the equipment is operating properly.
the unit is running roughly, then consult the factory.
screen (when used) is not clogged.
Manual