[mci services]

there was talk of a wiring diagram for fitting a relay to protect the pressure switch on a pump and here is a link. please moderators this is not a link to another forum but to an image of a diagram. there was a bit of interest a few weeks back and here it is. i will get the part number for the relay and post that as well



http://www.window-tools.com/images/relay.jpg

[mci services]

the product code is N02AW

this is available in maplins

hope it helps someone

[Frankybadboy]

thanks stu that helps

[Nathanael Jones]

How does that protect the pressure switch ten?

[[GQC] Tim]

I might be stupid, but why would you want to protect your pressure switch? From what?

[Nathanael Jones]

Just read on Peter's forum that this design takes the amp load away from the pressure switch and uses the relay to handle the load instead. The switch only takes enough power to run the relay.

Seems like a lot of hassle to me,.. easier to replace the pressure switch!

[Peter Fogwill]

Yes if you like spending money and replacing pressure switches.  The relay is much more heavy duty, and dosn't need replaced very often.  There is also the chance of loosing one or the little bits inside, or stripping the threads, with constantly unscrewing and tightening the screws.

Peter