•
Another outside supply
1.
Close the discharge isolation valve.
2.
Open the air vent valves in the casing.
3.
Open the air vents in the seal covers.
4.
Open the valve in the outside supply line until only liquid escapes from the vent valves.
5.
Close the vent valves.
6.
Close the outside supply line.
5.5.3 Other methods of priming the pump
You can also use these methods in order to prime the pump:
•
Prime by ejector
•
Prime by automatic priming pump
5.6 Start the pump
WARNING:
Risk of equipment damage, seal failure and breach of containment. Ensure all flush and cool-
ing systems are operating correctly prior to starting pump.
NOTICE:
•
Risk of equipment damage due to dry operation. Immediately observe the pressure
gauges. If discharge pressure is not quickly attained, stop the driver immediately, reprime,
and attempt to restart the pump.
•
On frame mounted units, ensure that the oil level is correct prior to starting pump. Close
coupled pumps do not have oil lubricated bearings.
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.
5.6 Start the pump
Model 3355 Installation, Operation, and Maintenance Manual
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