Edwards A311-01-985, Instruction Manual

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A311-03-880 Issue A
Page 30 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Operation
4.2.2 Start-up
1. Ensure that any isolation valves in the pump inlet and outlet pipelines are in the correct positions.
2. Switch on the cooling-water supply:

Check that there is an adequate flow of cooling-water at the correct pressure (see Section 2.4 ).

Check the water connections for leaks.

Close the backing pump air-admittance valve (if fitted).
3. Switch on the backing pump and open the backing valve (if fitted).
4. Switch on the motor electrical supply or engage your drive and transmission system to start the HV8000 pump:

With DoL starting, you must only start the HV8000 pump when the backing pressure is below the maximum
backing pressure for DoL starting: see
Table 2 . Otherwise, the pump may overheat.
5. Allow the HV8000 pump to run for approximately fifteen minutes to achieve normal operating temperature.
6. Slowly open the pump-inlet isolation-valve (if fitted).
You can now use the pump as required in your application.
4.3 Shut-down
1. Close the pump-inlet isolation-valve (if fitted).
2. Leave the HV8000 pump operating for sufficient time such that the pump is thoroughly purged of any hazardous
substances.
3. Switch off the motor electrical supply or disengage the drive and transmission system to stop the HV8000 pump.
4. Open the backing pump air-admittance valve (if fitted) and switch off the backing pump.
5. Switch off the cooling-water supply.