Sight glass

[philjd26]

Hi
just a quick one,when moisture is detected from a sight glass by changing colour does it return to dry colour when moisture Is removed???

Rgrds phil

[frederik79]

it is a indicator , so the answer is yes.
always check your vacuum.Don't rely on the indicator.

[Tayters]

It should but I try and change it with the drier to be sure.

[monkey spanners]

What they said^ but if the system has been really wet the moisture can wash the colour change chemical out of the sight glass.

[Brian_UK]

And the time taken to change is not instant.