Central Heating Pump

[Multiplex]

My central heating pump is dead. RIP

I've just purchased a new Wilo 5 metre head pump but am having trouble getting the old pump off the isolating valves.

There's so much scale that's seeped through the fixing it's grown like mould and is an inch high! Would this much scale make it nearly impossible to get the isolating values off the pump or should I just try a lot harder? The valves do shut off ok.

My plumber wants £160 to replace the valves and pump. To replace the pump only is £80. This is labour only as I've already got the pump.

Do I have any options?

Simon.

 

[ChrisR]

Don't grip the nuts tight they squash. Tap them with a small hammer all round to break the seal. Try heat (blowlamp). Try a hammer and sharp cold chisel to tap thr nuts undone. If it slips file a small groove. If it doesn't work file harder and hit harder. When the nuts split you've won - buy new nuts easily. Otherwise bung the header tank pipes, and remove valves from pipes and replace with new ones ONE AT A TIME (or you'll get wet). Or freeze the pipes, locally or at header tank. So you have many options. Not a good pump you've bought, though it should last a few years.