I did and he took the top off, wiped the sleeve clean and put the top back on and said "that was good enough, you don't need to flush it out".
I have since spoken to Fernox who said that is incorrect, and recommended that the seal should be replaced if the top is removed.
And I've looked at You...
I have had my central heating system changed from oil boiler to an Air Source Heat Pump. In doing this the magnetic filter has been fitted on the floor so access to the drain end isn't possible. It is a Fernox TF1.
Who can verify that this is the worst place to fit it. I have been told by the...