Goulds Pumps VIC - IOM - Manual (Page 49)

a) Connected the driver to a power supply.
b) Verified that the driver rotates counterclockwise when viewed from above.
c) Checked the alignment between the pump and driver.
d) Adjusted the impeller.
e) Attached the mechanical-seal lock collar to the shaft.
2. Verify that the mechanical seal is properly lubricated and that all piping to the seal is connected.
3. Verify that all cooling, heating, and flushing lines are operating and regulated.
4. Verify that all connections to the driver and starting device match the wiring diagram.
5. Verify that the voltage, phase, and frequency on the motor nameplate agree with the line current.
6. Rotate the shaft manually to make sure that the impellers are not binding.
7. Verify that the driver bearings are properly lubricated and check the oil level in the housing.
8. Verify that the auxiliary seal components are properly vented.
9. Inspect the suction and discharge-piping connection and pressure gauges for proper operation.
Pump priming
CAUTION:
• The pump must be properly vented through the discharge head connections. This is important for
liquids with suction pressures close to their vapor pressures. Vent piping must continuously rise back
to the source so that liquid cannot collect in the vent line.
• 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.
NOTICE:
Net positive suction head available (NPSH
A
) must always exceed NPSH required (NPSH
R
) as shown on
the published performance curve of the pump.
Requirements
• The pump must always be flooded with the suction valve fully open.
• Never run the pump dry as this can cause the rotating parts within the pump to gall and seize to the
stationary parts.
• The parts are lubricated by the liquid being pumped unless the enclosed linshaft option is purchased
to lubricate the lineshaft bearings with a clean fluid.
Start the pump
CAUTION:
• Observe the pump for vibration levels, bearing temperature, and excessive noise. If normal levels are
exceeded, shut down the pump and resolve the issue.
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 discharge
pressure.
5. If the pump fails to reach the correct pressure, perform these steps:
Commissioning, Startup, Operation, and Shutdown (Continued)
Model VIC Installation, Operation, and Maintenance 47