Is it normal to see some air bubbles in the sight glass when the AC is ON, and the fans are running. When the Compressor is ON and the fans or OFF, there are no visible bubbles.

Also, when the Compressor is ON, the liquid refrigerant level as seen in the sight glass is about 1/4" below the glass. Is that normal, or should it be right at the top?

For all of the above the Ambient temperature was 23C (74F)

Thanks,

Phillip

__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]