On 17/11/2019 16:44, Sarah wrote:
I live in a hard water area and so have to install a combo care scale
inhibitor once a year. I am a month late but have finally got round to
it. I
went to unscrew the top of the inhibitor with a variety of good
screwdrivers.
They fit in but the screw won't budge. I think the phosphates have overflow
and jammed it tight. Any ideas for how to unclog it so I can actually
unscrew
it to change it?

Try hitting the handle of the screwdriver with a lump hammer. This may
shock the bond enough so that you can turn the screw.

Failing that apply some light oil and leave for 24/48 hours.

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