I have got hold of a used KH director and have been using it for a couple of months now, it seems to be working fine but I have noticed that in the line for the sample water always seems to have large air bubble in it.
I assume this is going to affect the accuracy so wanted to get rid of them but I cant see where they are coming from, would a worn dosing head allow the water back siphon back into the sump? Would there be any issue adding a none return valve to stop the siphon?
I assume this is going to affect the accuracy so wanted to get rid of them but I cant see where they are coming from, would a worn dosing head allow the water back siphon back into the sump? Would there be any issue adding a none return valve to stop the siphon?