| Re: Aircon query
A compressor pumps the refrig in a gas state, if it tries to pump liquid it does a nasty hydrolock thing! When R12 to R134 changeovers were first done there was concern that the 134 would "wick" out of the hioses as the molecules are smaller. In fact most systems did not leak as the hose walls had been coated with the ester oil and this acted liked a barrier. 134 is somewhat less efficent then R12 so a change over system will cool about 80 percent as compared to R12.
Rick |