How do I disconnect ac on a 91 charade.?
remove compressor drive belt I guess, removes main mechanical burden ...if you want to remove compressor itself, or even condensor, to save the weight of car carrying that now redundant component around, you can do that too..bear in mind before loosening off any hoses or steel gas lines of the system that it will contain a/c coolant gas still under some pressure. Compressor is the main weight and mechanical burden on engine, although when system is switched off the compressor pulley load drive effort is low, anyway.
if car has one "serpentine" belt driving everything, rather than a separate AC drive belt, then, it is possible that removing the compressor will necessitate fitting a new shorter engine belt compatible with no AC.Depends of car's belt arrangement.
on Aug 25, 2019