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R22 vs R22a - in old Cruisair system
July 8, 2013
10:09 am
ODavis
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Forum Posts: 1
Member Since:
July 8, 2013
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I have an older CruisAir J12 manual control system which started off totaly fine this year and has given me no issues over the past 12 or so years.

About a month after I put th eboat in the water this year the heat stopped working, I am assuming the revering valve plumbing. No big deal, it got hot quickly and the AC worked fine. As the temperature approached the upper 80's the unit started iceing up. Ok, no R22 around so I took a chance (after much reading) and added R22a, to my supprise it worked pertectly fine for a short time, a few weeks. I keep my AC on all of the time, even when I am not on the boat. Then it started iceing up again.

So here I am, outside temp is ~90's and the AC is hosed up. I am not really an AC guy, but have gotten along with basic skills.

I am concidering evacuating and flushing the system then recharging with R22a. I am not licensed, so I can not get R22. The only AC guy around my area does not schedule appointments, just leave the key and we'll fix it. Not!. Anyway, my question is what pressure do I charge it to? The same 65-70 lbs as with R22? I have no way of measuring the amount of R22A I charge the system with. But R22a has more volume then R22, do the pressure readings change or stay the same as with R22?

Also it appears there may be a smal leak, is it worth putting in some sealeant? I never really like doing that.

 

Thanks,

Orlando