On Mon, 16 Jun 2014 09:03:42 -0400, Stormin Mormon
Let me ask this, is it your belief that the system, one with a small
leak, will actually not really "equalize" on the high and low side but
that only the side with the small leak will equalize to atmospheric
whereas the side that didn't have the small leak will retain a higher
pressure, higher then atmospheric, then the side that has the small
leak. That is the only scenario under which I can see how your
experience can be explained.
If that's not clear, let me explain as if I was you, with the small
leak on the low side, the low side winds up at zero (that is it's at
atmospheric pressure). The high side, on the other hand, doesn't go
to atmospheric but retains a pressure higher then atmospheric. Then
when you start the system the low side reads zero/atmospheric, while
the high side pumps up to something higher. Similarly, if the leak
was on the high side then the high side is at zero. The low side
however doesn't go down to zero. When you start the system you see
slight pressure on the low side because it wasn't at zero to start
I'm not sure I really think that's possible unless the compressor
valves and expansion valve can all act in such a way as to trap
refrigerant in each side with at least a few psi *residual pressure
difference*. My experience is with Automobile AC and in my experience
those system equalize to the same pressure on both sides whether the
leak is in the high side or the low side.
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