Posted 12/5/2022 17:32 (#9967087 - in reply to #9966494) Subject: RE: Proper way to winterize Raven NH3 cooler
Central Iowa
Davis Equipment in Des Moines is who I bought my Raven system from, I asked them about what to do when done. They said to not blow air through because you can spin the flow meters to fast and wreck them just open valve and pour diesel in. Didn't say anything about the oring seals not liking petroleum.