A705-74-880 Issue K
Page 28 © Edwards Limited 2009. All rights reserved.
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INSTALLATION
3.13 Commission the pump
1. Isolate the pump from your process system.
2. Ensure that the gas-ballast flow valve (Figure 1, item 10) is closed.
3. Turn on the cooling-water supply; the shaft-seals purge air or nitrogen supply, the gas-ballast nitrogen supply (if
fitted) and your exhaust-extraction system. Ensure that the pressures and flow rates are as specified in
Section 2.2.
Note: There should be no cooling-water flow because the pump is cold and the TCV will be closed.
4. Check that there are no leaks in the water, air, nitrogen (if fitted) and exhaust-extraction system connections.
Seal any leaks found.
5. Switch on the pump.
6. Check that the pressure shown on your shaft-seals purge air or nitrogen pressure gauge is as specified in
Section 2.2. If necessary, adjust the pressure of the air or nitrogen supply.
7. Leave the pump to operate with the inlet valve closed and allow the pump operating temperature to stabilise.
Note: To check the operating temperature of the pump, measure the temperature of the pump at the point shown
in Figure 1, item 3.
8. Check that the pump operating temperature is between 122 to 140°F (50 to 60°C) as measured at the point
indicated above and that a suitable cooling-water flow condition has been reached.
9. Turn off the pump, the cooling-water supply, the shaft-seals air or nitrogen purge supply and the gas-ballast
nitrogen supply (if fitted).
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