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1)Open the shut-off valve (I) .
2)Open the by-pass valve (F) to depressurise the delivery pipeline.
3)Start the pump and run it for a few minutes with no pressure.
4)Adjust the by-pass valve (F) to obtain the pump's operating pressure.
To stop the pump,proceed as described below.
1)Open the by-pass valve (F) to discharge the pressure.
2)Stop the pump.
3)Close the shut-off valve (I) .
Starting and stopping the pump when supplied by gravity-feed
To start the pump,proceed as described below.
1)Open the shut-off valve (I) .
2)Open the by-pass valve (F) to depressurise the delivery pipeline.
3)Start the pump and run it for a few minutes with no pressure.
4)Adjust the by-pass valve (F) to obtain the pump's operating pressure.
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