Does anyone measure the DO levels of clean, unfilled kegs? I'm looking for a baseline level to judge whether or not our keg washer is performing to specification. I've increased our number of CO2 purges from 2 to 3 times, but I am still seeing a DO content of 1500-2000 ppb. The CO2 leading into the keg washer is reading around 12.5, and although relatively high, wouldn't have a significant impact. A freshly filled keg is measuring between 50-120 ppb, with the brite tank level of about 25 ppb.
I managed to lower the DO level to about 100 ppb by manually pressurizing the keg to 30 PSI and blowing down twice. We've had troubles in the past with the keg washer over pressurizing kegs, causing blow-back into the brite when kegging. The current washer purge cycle is set at 13 PSI, and I'm hesitant to increase it further.
I managed to lower the DO level to about 100 ppb by manually pressurizing the keg to 30 PSI and blowing down twice. We've had troubles in the past with the keg washer over pressurizing kegs, causing blow-back into the brite when kegging. The current washer purge cycle is set at 13 PSI, and I'm hesitant to increase it further.
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