Magnetic Filter Problem

[Sonic70]

My parents have a boilermag magnetic filter fitted below their ideal logic boiler. I tried cleaning the filter today, closed the isolating valves, opened bleed nipple then unscrewed the drain point to empty it. Unfortunately the water kept running till it looked like way more water in bucket than could of been contained in filter. I then put everything back to how it was. Only thing I can think is one of the isolating valves is faulty and letting water through when in off position. Would it be better to replace valves with new ones or replace whole filter for say fernox omega filter.
Thanks Victor

 

[HERTS P&D]

Replace it with one of these:

https://www.screwfix.com/p/fernox-62248-tf1-omega-filter-slip-socket-connection-22mm/5543v

Andy

 

[Sonic70]

That's what I've got on my own system with the isolation valves as well. I just wondered what people thought of the boilermag and whether it was worth keeping. Also do others have problems with the valves failing.

 

[muggles]

I've never come across one of these where the valves actually work. See the same valves on a variety of cheaper brands and they're universally rubbish. Go for a Magnaclean or an Omega

 

[Sonic70]

Thanks for replies looks like might be worth replacing for a better filter then. Other thing that happened was I had to top up boiler pressure afterwards. So topped up to 1.2bar. Then got call from my dad who said the hot water was running about half the flow. When I checked the system again the pressure was still reading 1.2 but hot water was really weak. After a bit of head scratching suddenly got the thought to check filling loop, realised I had left one of the valves on still, closed that and hey presto the hot water was back to normal. Really odd that it affected the hot water as one valve was still closed and boiler pressure was steady at 1.2bar.

 

[Mottie]

I have the Omega TF1 too. No isolation valves. I just make sure system is switched off, withdraw the magnet, give it 10 seconds for any crap to sink to the bottom of the canister and then open the valve to blast everything out. Refit magnet (usually after sloshing it about in the drained water to see what it can pick up), clean and refit magnet, job done.

 

[Sonic70]

I think its a good filter, when I fitted mine I connected garden hose to the drain point on filter and then used that as exit point for a mains flush of system

 

[magicmushroom666]

Thanks for replies looks like might be worth replacing for a better filter then. Other thing that happened was I had to top up boiler pressure afterwards. So topped up to 1.2bar. Then got call from my dad who said the hot water was running about half the flow. When I checked the system again the pressure was still reading 1.2 but hot water was really weak. After a bit of head scratching suddenly got the thought to check filling loop, realised I had left one of the valves on still, closed that and hey presto the hot water was back to normal. Really odd that it affected the hot water as one valve was still closed and boiler pressure was steady at 1.2bar.

It was probably coming out the overflow somewhere, so dropping the pressure same as leaving a tap running.

 

[Sonic70]

Why would it come out the overflow, only one valve was open on filling loop, the pressure on the heating circuit wasn't increasing,also do you mean prv pipe.