hi i have a grundfoss pump that is new and i have replaced partially blocked cold feed pipe from header tank to pump i did not replace it all
when the pump runs on speed one it sounds like gentle waves on the beach (sort of swishing sound ) but on speed two it sounds worse and on speed three you can hear it all over the house.
i have tried bleeding the system and pump but the noise continues
any advice would be appreciated
chris
when the pump runs on speed one it sounds like gentle waves on the beach (sort of swishing sound ) but on speed two it sounds worse and on speed three you can hear it all over the house.
i have tried bleeding the system and pump but the noise continues
any advice would be appreciated
chris