Are you an ac technician? Were do you work??? > > >Mick, > >R12 does not "go bad" like beer going flat or clothing going out of >style! It seems your tech does not understand how the principles of >evaporation & condensation "move heat". The compressor should exert >pressure on the high side (condensate zone)while drawing on the low side >(evaporative zone). During the "change of state" the evaporating >refrigerant absorbs massive amounts of heat. > >The compressor provides the labor for the high side pressure and low >side pressure drop with the expansion valve acting as a referee to >manage the "change of state"! The closer the high and low side pressures >are to each other, the LESS efficient the process is. Typically a normal >High side is 185-205 psi and the low side is 15-30 psi. Either your NEW >compressor isn't working (NO LABOR), the NEW expansion valve isn't >working (NO REFEREE) or you have a foreign agent like dirt, moisture or >PAG oil in your R12 system negating the necessary valving action. Your >high & low side pressures are too close and the system is grossly >overcharged to overcome the non-functional part or the effect of the >foreign agent. I think you need a new technician........if you'll pay my >expenses, I'll come out and fix the system to function correctly! > >Regards, John ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.