myson cp51

[spaglemon]

i have a potterton puma 100e with a myson compact cp51 pump fitted which needs replacing , i'm struggling to find anyone to supply this pump , does anyone know if there is a compatible pump , i bought a grunfos pump which i was assured fitted which it kind of did , it bolted on ok but leaked when i began to fill the system , any ideas much appreciated



cheers

 

[mickyg]

fairly sure you can just fit another cp pump head. asfaik they all have the same impellor pattern.

 

[misterdubya]

HERE IS ONE

Mr. W.

 

[spaglemon]

oops just realised it's a cp61



cheers

 

[spaglemon]

thanks for the replies and sorry about the duff info i gave earlier

does anyone know why i can't seem to find a myson compact cp61 pump head only , the only one i've been able to find seems to come with the cast part too ( sorry don't know the proper name for this part ) and is nearly triple the price of the cp53 an cp63 ?

does anyone know why there is such a big difference in price ?


thanks again

craig

 

[mickyg]

fairly sure you can just buy a CP63, remove the head and swap the head of the old one. Should be about £40, rubbish pumps, but you have no choice !

 

[spaglemon]

have ordered a new pump , after fitting the new prv because the pressure was slowly dropping nothing has changed , while i had the system drained down i re-pressurised the expansion vessel which appeared to be down on pressure and after re-filling and bleeding the system the pressure still seems to be dropping (approx 1/2 to 3/4 bar in 24 hrs)

the prv activated last week and a friend of a friend took a quick look at it and said he thought it may have been an air bubble that had built up and eventually caused the prv to activate , we hadn't had any problems with losing pressure until the prv went last week


any other thoughts ?

 

[misterdubya]

Sorry, you have completely confused me.

 

[spaglemon]

sorry , i'll start a new thread with the full story


thanks