In a message dated 16/08/2009 11:41:09 GMT Daylight Time, [email protected] writes:
I suspect that your accumulator checks will not help and I would look for air leaks before the pump as a first stage diagnosis. Thanks for the reply Roger you have highlighted another possibility. I was wondering about the possibility of leaks somewhere, however when left to its own devices the water pump doesn't switch itself on when left for several hours, so the down-side of the pump doesn't seem to have water leaks. Could air be leaking out of the diaphragm in the Accumulator into the system? The Jabsco documentation (I replaced the original Shure-flo pump about four years ago) says I don't actually need an accumulator. On the tank side of the pump I can't see any leaks, there is just a short run of pipe (about 18 inches) via the 'tee' piece to the sensor for the water gauge and a main valve just next to the tank. There is no trace of water leaking from the pipework. The problem seems to have arisen since I re-filled the water system this year back in April after the winter frost precaution drain-down. It certainly sounds as though there is air gurgling in the heating coil of the Paloma - but there's no way of bleeding it as far as I can see. This hasn't happened in previous years.I would have thought that by now (4 months) any air would have been pushed out of the system, and anyway, if the air is trapped in the hot water circuit, why are the cold taps affected? Any suggestions (BTW I don't have a colorifier in the system). Arthur Naylor [Non-text portions of this message have been removed]
