Any plumbers on here?

[Northy]

Our central heating pump is badgered - bearings are shot. So I tried to change it today. I shut the isolation valves at either side and loosened the lower nut carefully, some water came out as I expected. I kept mopping it up, more came out, I mopped it up..... etc.

I thought, geez this pump shouldn't hold this much water and then I heard the tank filling up and realised the pipes were getting warm again from the hot water in the tank.

So I'm guessing the isolation valves aren't working. They turn freely enough, is that right?

What's wrong?

Anyone local wanna come and do it for me?

G

[DCM]

whats wrong with the pump, stopped turning.

Shut-off valves, take the knob off them, and use a spanner to nip it up that last bit....

[JCJC]

Some of the valves turn 90 deg to off, you can then turn 90 deg to on etc, but just keep turning in the same direction, on/off/on etc - ballovalves ?

Have to get the off position in just the right position.

There is a handy kit - bung kit - that is like two rubber cones, with a 15mm or 22mm hole in the fat end, cone goes into the outlet of the heating header tank, hole fits over the vent pipe that hovers over the tank, if you are lucky, with these in position and a small water loss you can change a joint on the heating system (only one joint at a time).

Edit: http://www.heatingcontrolsonline.co....kit-p-211.html something like this..

[James]

My parents boiler blew up yesterday... 5k for a new one

And dads truck.. he was driving along - the fuel meter wet to zero, water heater light on, rear windows went down, sunroof opened, seat started moving, quite funny really ECU died .. or its possessed

[Northy]

Bearings are dead in pump it wakes me up at 6.30 every morning as it starts

The isolation valves turn about 5 ish times then stop turning, they aren't the ones that turn for ever, I know what you mean by those.

G

[Rich D]

G

There should be another valve that closes the cold water feed to the cylinder. If you close this then it will greatly reduce the head pressure from the header tank in your loft. It might still weep if your isolation valves arent seating, but at least it should only be a trickle.

Im not a plumber but dabble similarly to yourself


EDIT - hang on - this might only be for the hot water side ! ? Sorry - it worked when i had to change a tap ...... ??

[JCJC]

Originally Posted by Northy

Bearings are dead in pump it wakes me up at 6.30 every morning as it starts
G

Re set the timer to switch on later when you are up & awake !!

the easy drain kits are good, less messing than freezing