do you by chance have a set of charging gauges? you may be able to adjust the amount of refrigerant with them if you knew the system operating pressures on the high and low side. there should be a tag somewhere on the system that gives the r-12 capacity. with that you can figure out how much 134 needs to go in. say the 12 system held 3 lbs of freon, 3lbs times .8 or 80 % = 2.4 lbs of r-134. did you do the 134 conversion? the system needs to be evac's and hold a vacuum for about 20 minutes or so to clear it out, then put in your can of ester oil with 134 first, then add the remaining amount of 134. may be possible to rent and evac pump from autozone or some autoparts store. if you were close by, you could stop over and i could put it on our recycler/charging station and set you right up.
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Today's Featured Article - Chores - by Frank Young. The ceaseless passing of time! It is at once our friend and our enemy. It measures our progress and it makes us old. Like most features of our life, few things are all good or all bad, and most such judgments depend on our own perspective or viewpoint. In our particular hobby, we enjoy the nostalgic return to the days of our youth as we recreate many of the scenes that took place on the family farm that served as the stage for the first few acts of the play that is our live
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