Turn it off for an hour, top up the pressure. Start at the top and work down. Dont be fooled by looking from the bottom up. Most common leaks are push fit plastic bits (get new O rings)automatic air vents (tightening down the black cap will cure them) and any pipe with a fibre washer.
kenneth
October 2006
need to keep looking, could be any where
hi-spec plumbing
October 2006
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