Dear Peter,

Thanks for your reply. I've to investigate the amount of oil left in the sump after compressor break down. However I'm sure it must be about nothing due to the cause of liquid flood back. What else can it be? Please read my reply to Marc O'Brien in order to receive your opinion about my thoughts. And above that can you inform me if you've to change the TEV during a R-417A retrofit. Regards, JW