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The expansion vessel has an airgap and is charged to a pressure of 1bar. As hot water heats up it expands and if it didn't have anywhere to go it would pressurise the system (you could see this while watching the pressure guage rise as the boiler heats the system up) until it reached the...

http://www.diynot.com/forums/viewtopic.php?t=5134&postdays=0&postorder=asc&start=15 takes you to a previous dicussion on this. Here's http://antiquerestorers.com/Articles/George/FTT_0598.htm a variation on the same theme. You could try a search on the net to find other ways but I think...

If you're using a digital meter you'll see that the voltage reading will fluctuate if it's "pick up". In the hands of someone who's got some experience and knowledge they'll know what they're looking at. It's all a question of understanding. Please don't start the neon screwdriver debate...

Yes, try bleeding the radiator to get rid of the accumulated air. It will settle down after a while. Yes, it would go down to zero after a while depending on the rate of leakage. After bleeding the radiator you'll probably have to top the pressure back up to 1 bar again (it's the same as...

Good bit of reasoning. It could well be the heating element. Do you have an economy wash cycle that just uses the incoming water temperature rather than using the element? If the m/c does that cycle correctly then I would say it's highly likely to be the element. They do tend to go after a...

What do they say about a little knowledge? :oops: However the same theory still applies. If the fan isn't turning it's probably seized and will just sit there humming at you.

It's not a cooling fan. You've got a fan assisted oven, the fan circulates the warm air around it to provide an even temperature. If the fan is not turning and is making a humming noise it's probably siezed up. You could try turning it by hand to see if it moves freely. (With the oven...

On Hotpoints there isn't a captive nut, don't know if this will apply to Hoovers but for info - there was a small plate with two threaded holes inside the machine. As I was replacing the hinge I asked myself the same question and realised that when I took the second screw out the plate would...

Pressure Relief Valve. This lifts at 3 bar. The pressure should stay fairly constant at around 1 bar (if that's what it's set to). If you are saying that the pressure is increasing as the boiler warms up it could be that your expansion tank needs recharging/replacing. If the pressure is...

I think this has now been listed as a banned substance and you can't buy it anymore. Looks like Jeyes fluid then!

Anyway, going back to the original point, it's like putting your hand on the oven door and saying "it must be the right temperature because it's hot". The neon tells you NOTHING apart from the fact that there is sufficient voltage at an indeterminate current to make it strike. You could...

Yes. The wiring colours are changing in 2005 so if there is evidence of new wiring then there needs to be an inspection certificate as required.

You will find that plastic guttering expands and contracts with temperature and that if you don't get a good fitting join in the first place no amount of mastic etc will keep the joint watertight. You can buy adaptors for most profiles of guttering to join one section to another. It's worth...

Is it true to say that as most cars are front wheel drive nowadays that the traditional handbrake turn is a thing of the past? I always thought that you started your turn, applied the handbrake to lock the back wheels then put on the gas to get the wheels spinning and maintain the turn...

Ice Cold In Alex? BTW, have you ever tried to start an engine using a crank handle? Not the simplest of tasks - and then it can always kick back! It's quite straightforward to drive without using the clutch. You just have to be gentle with the gearbox and know when the engine revs match...

If you've got the support you're OK but he also made the mistake of giving comments to a journalist before he'd finished his career in politics. The release of the book meant that all those he'd had a go at turned against him and would no longer back him. A bad error of judgement. He...

I know nothing about dishwashers but at a guess I'd have a look to see if anything's blocked. To protect against flooding presumably means that the machine can sense if there's still water in it or that it's not pumping away. Also, try a getting a quote from a local repair firm rather than...

Are you saying that you've still got all the feet it's just that one of them came out? If so all you have to do is make sure the machine sits level - use a spirit level.

My tenpennyworth:- What do you mean by "better"? If you mean more cost effective then it's probably cheaper to switch the tank off when it's not going to be used for a period of time (overnight, during the day if you're at work). You're always going to get heat loss and the hotter the...

Out of interest did he have a survey done before he bought it? Is he worried he might have to spend money? I think you've answered your own question. Just look at some of the posts in this part of the forum and you will gather enough evidence to convince even the most ardent unbeliever.