Refrigeration is about temperatures, not pressures. When you learn to think in terms of temperatures, you can work with any refrigerant. A new refrigerant only requires a new P/T chart.

Back when only a few refrigerants were in common use, I told people to paint over the pressure scales on their gauges, so they would be forced to use the temperature scales. Temperature is what really matters.[/QUOTE]





temperature alone is as irrelevant as pressure in isolation. it seems slightly patronising - to me at least- when some say

' forget the pressure tell me the temperature'

it's nonsense you cannot diagnose by temperature alone..

if i said the suction pipe is 12 deg's c what's wrong?
could you tell me??????

i rather doubt it..

no you would give me a list of alternatives much the same if i said 'the pressures 34psig whats the matter?'

rant over back to the wine..;-))

cheers

richard