On Thu, 4 Nov 2010 19:17:42 -0000, "The Medway Handyman"
wrote:

Fredxx wrote:
wrote in message
...

Our mains water is supplied through a relatively new but longish
service pipe (about 300 m) which we installed a couple of years ago
to help improve flow rates. The local pressure, prior to
installation, was approx 7bar according to water supply company and
the flow was considered 'acceptable'. The flow has been increased
significantly since we installed the new non-shared service pipe.
Hence, I have no real concerns about the mains supply being in any
way unusual.

Before I read this paragraph my immediate thought was a high mains
pressure.

Reading that, I've reconsidered my reply about mains pressure not mattering.
That could be the problem, the incoming 7 bar might be stopping the piston
in the pressure switch returning.

Simple way to find out - use a short hose & suck water from a container -
water butt or similar. If it works properly your mains pressure is the
problem.

Thanks Freddxx :-)

Many thanks to both TMH and Fredxx. I have tried the above suggestion
using hose and bucket. The machine works flawlessly! So , I guess, its
off to BES for a pressure regulator.
I'd never thought of our rural water supply as being too high pressure
- we are on a hill overlooking Vale of York - but the reservoir which
feeds us is significantly higher!
Thanks again for your help. I will also pass the info on to the local
dealer.
Please reply to group - email address is not monitored
Ian