CH Pump Problem
- Thread starter yartin
- Start date
Impeller kit to replace :
www.aliexpress.com
Grundfos UPS15-50 UPS15-60 UPS15-70 Gas Boiler Spare Part Water Circulation Pump Motor Rotor Water Leaves for UPS 15- 50 60 70
Smarter Shopping, Better Living! Aliexpress.com
www.aliexpress.com
Oh yes, moved to the house in 2002 and was there so 23 years plus and now had to be replaced.
The new model UPS3 is much lighter.
There is no other UK seller for this part. From ali express; is not going to be the original so inferior and won't last long so may be not worth it.Impeller kit to replace :
Grundfos UPS15-50 UPS15-60 UPS15-70 Gas Boiler Spare Part Water Circulation Pump Motor Rotor Water Leaves for UPS 15- 50 60 70
Smarter Shopping, Better Living! Aliexpress.com
I'd bite the bullet and replace the Pump. Otherwise you may be in the same position in the not to distant future.
I think I'll repair and save the environment.
Have you read the previous pages; was replaced 2 days ago.
I dug further, removed the fan and got the bottom of the issue, broken plastic bits from fan which cause the grinding noises on its last day of operation, assume wear and tear of the material after 23 years plus. The whole impeller is free of sludge or curd which is good news. On the plate there are numbers, 9913 so possibly manufactured in week 13 of 1999
So a new fan and you're up and running
So a new fan and you're up and running
Do you have a Magnaclean or similar? That's the best way to add inhibitor and for sampling to test. If not might be worth getting one.
Adding inhibitor via the F/E tank it's not easy to get it into the system where it's needed. Otherwise might be worth getting an injection kit
I didn't read back through all the posts, no.
Confusion is as to why you are now seemingly wanting to repair a knackered pump when you've already replaced it.
The pumps age is on the front.....PC9913. as you said, week 13 1999.I dug further, removed the fan and got the bottom of the issue, broken plastic bits from fan which cause the grinding noises on its last day of operation, assume wear and tear of the material after 23 years plus. The whole impeller is free of sludge or curd which is good news. On the plate there are numbers, 9913 so possibly manufactured in week 13 of 1999
So a new fan and you're up and running
View attachment 402643
View attachment 402644
I was not trying to repair the pump, I was asked to dismantle and see what's wrong. Again in pls read previous post #62 above. So I obliged for all to benefit and experience.
I don't have Magnaclean but planning to fit one one soon. I do regular flushes every year but magnaclean will defo improve system.
Interesting. It looks as if the impeller fell off without undoing the bolt. Not surprising it was noisy! It's clearly beyond repair apart from replacing the complete rotor. That looks a bit Chinese but might be OK. I assume you're not considering that now the pump has been replaced.I dug further, removed the fan and got the bottom of the issue, broken plastic bits from fan which cause the grinding noises on its last day of operation, assume wear and tear of the material after 23 years plus. The whole impeller is free of sludge or curd which is good news. On the plate there are numbers, 9913 so possibly manufactured in week 13 of 1999
So a new fan and you're up and running
BTW it's not a fan, it doesn't have one.
If you have a double rad like the one shown with a air vent at (the top) on one end and a blank 15mm plug on the other end, the most economical way of adding inhibitor is to close both rad valves, open the air vent to ensure valves are tight, then slacken one of the nuts a few turns where one of the valves is attached to the rad, pull back a bit on the pipe and drainn off slightly more than the container of inhibitor, then retighten that nut, remove both 15mm vents (one a blank) where they screw into the rad, get a 15mm elbow, wrap a few turns of PTFE tape around one end, screw it in by hand at one end, get a small funnel or if a steady hand just pour the inhibitor into the rad, replace both vent plugs, open one rad valve a little to vent the tiny amount of air, shut the vent, open both valves and you're back in business.
Your system is quite clean, much like my > 50 year old open vent system, can you see sometime what vent and (cold) feed arrangement you've got.
Attachments
I was allways a fan of the older type Grundfos but my plumbing friends tell me that the UPS3 especially and generally, all the newer type Grundfos's wouldn't now be their first choice due to relatively short lives and opt for pumps like the DAB Evosta 3, it might be a bit unfair because I wouldn't expect any A rated pump to last longer than maybe 10 years or so, I have a exactly 7 year old 6M Wilo Yonos Pico still working fine.
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