Grundfos UPS3 Remove Impeller from Pump Casing

[s1977]

Hi All

Hopefully a simple question to answer from those experienced. On opening my Grundfos UPS3 pump, the impeller section seems to be firmly set in the body casing section of the pump. I wanted to see if I can remove it to fit a powerflush pump head to undertake powerflushing on the system at some time. There is a black seal over the impeller housing and I am unsure if that is what is holding the impeller section in the pump casing. Do I need to remove the seal to remove the impeller section first? I don't want to use force to pull it and end up distorting or damaging the seal. In the videos that I saw on youtube, the impeller section is retained along with the pump head and appeared to come off freely from the bottom casing section.

Could anyone advise?

 

[gazfen]

just pull it. It’ll be fine.

 

[s1977]

Thank you. I will have a go at it once again.

 

[s1977]

Managed to dislodge the impeller in the end from the casing. Thank you. I have cleaned it all up now so good to go.

 

[HERTS P&D]

Have you got a magnetic filter? if not fit one now and see much rubbish it collects.

Andy

 

[s1977]

Yes, there is one installed on the hot water return side but not on the central heating side. I plan to get the powerflushing done and then follow up with installing a filter on the central heating return side as well.