rosebud Posted July 2, 2008 Share Posted July 2, 2008 We recently purchased a house with an existing pool it is approx 11m x 5m has three skimmers but only one pipe back the pump plus a pipe for the main drain.There is the usual sand filter. The problem is that when I put the pump for filtering on automatic its fine until it shuts down then it seems to draw air in and won't start again properly until it is primed manually . This a real problem for me as we need to be able to leave the pool for a few days to two weeks at a time now and again and obvioulsly would like to leave the filtering o auto. Can anybody suggest how to cure he problem ??? Link to comment Share on other sites More sharing options...
steve Posted July 3, 2008 Share Posted July 3, 2008 fit a non return valve just before the pre filter and after the valves - or leave it running 24/7Steve Link to comment Share on other sites More sharing options...
Poolguy Posted July 3, 2008 Share Posted July 3, 2008 [quote user="foxy lady"]We recently purchased a house with an existing pool it is approx 11m x 5m has three skimmers but only one pipe back the pump plus a pipe for the main drain.There is the usual sand filter. The problem is that when I put the pump for filtering on automatic its fine until it shuts down then it seems to draw air in and won't start again properly until it is primed manually . This a real problem for me as we need to be able to leave the pool for a few days to two weeks at a time now and again and obvioulsly would like to leave the filtering o auto. Can anybody suggest how to cure he problem ???[/quote] The main difficulty seems to be that you have an air leak causing the system to depressurise when the power is off. If this is the case then it is a problem to be sure.TO veryify can you advise if; your pump is above ther water level, if so by how much.What is the power of the pump and capacity of the pump/filter system.Are there any air bubbles visible in the preskimmer Are there any air bubbles blowing into the pool.The answers to these questions might offer a cause, the solution to which might also become evident. Andrew Link to comment Share on other sites More sharing options...
Jonzjob Posted July 3, 2008 Share Posted July 3, 2008 If the cap on the pre pump filter is not completely water/air tight that can let air into the pump housing every time the pump is switched off... Our pump is almost exactly on the water level and that had a similar problem a few years back. Link to comment Share on other sites More sharing options...
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