To check 2521 A/C 2 and 2522 A/C 2 ~~~~~ To check 2521 A/C 2 and 2522 A/C 2     #2522 A/C 2 RSW found shut off v/v ring gasket leaking badly.Replace and function test ok.#2521 a/c 2 found evaporator condenser side heaving freon leak.C/O evaporator  and function test ok.HP & LP OK.#2521/2 ACU leaking-replaced. #2521-ACU-Old s/n: 32125  New s/n: 634032 Not: 2204272 raise to RSW.