A/C Question (I see the leak!)

[Glacier991]

If he system was empty it probably had some air in it. The ideal way todo this it to put the system into a vacuum (evacuation is not vacuuming!) onc the air and moisture are gone then refrigerant is added. I'm guessing your system would benefit from this.

 

[adale]

Pressures

Glacier,
What are the "normal" pressures (low and high side both) we should be seeing on a retro'd 134a system @ around 80 deg. I realize that these numbers are depentent on several things. I just don't want to over fill my system. It is working great, it just seems to have a much harder time when the lovely Oklahoman summer time hits...85 deg with 60% humidity. Thanks in advance!

 

[Glacier991]

Here's a pic of an R-12 system gauge set at 75 degrees on a properly charged system

There is no hard and fast rule here, systems vary, condensor sizes vary, airflow varies. 134 will run with a slightly higher high side pressure, especially in a retrofit, so maybe add 20-30 lbs on the high side. HTH