NOTICE:
Risk of equipment damage on pure or purge-oil mist-lubricated units. Remove the viewing port
plugs to verify that oil mist is flowing properly. Reinstall the plugs after confirming.
Before you start the pump, you must perform these tasks:
•
Open the suction valve.
•
Open any recirculation or cooling lines.
1.
Fully close or partially open the discharge valve, depending on system conditions.
2.
Start the driver.
3.
Slowly open the discharge valve until the pump reaches the desired flow.
4.
Immediately check the pressure gauge to ensure that the pump quickly reaches the correct dis-
charge 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 the prob-
lem.
A pump can exceed normal levels for several reasons. See Troubleshooting for information about
possible solutions to this problem.
7.
Repeat steps 5 and 6 until the pump runs properly.
5.9 Pump operation precautions
General considerations
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.
NOTICE:
•
Vary the capacity with the regulating valve in the discharge line. Never throttle the flow
from the suction side. This action can result in decreased performance, unexpected heat
generation, and equipment damage.
•
Risk of equipment damage on pure or purge-oil mist-lubricated units. Remove the viewing
port plugs to verify that oil mist is flowing properly. Reinstall the plugs after confirming.
•
Risk of equipment damage from unexpected heat generation. Do not overload the driver.
Ensure that the pump operating conditions are suitable for the driver. The driver can over-
load in these circumstances:
•
The specific gravity or viscosity of the fluid is greater than expected
•
The pumped fluid exceeds the rated flow rate.
5.9 Pump operation precautions
Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual
59
Summary of Contents for Goulds Pumps 3700
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