2515 #2-1 AC to check for leaks. Replace ~~~~~ 2515 #2-1 AC having multiple reoccurrences of coolant pressure fault (freon leakage). Please check for leaks.  N 2515 Checked and found no leak at car 2515 #2-1 CCU. Pressure satis at LP/HP = 40/120PSI. Car was cooling and able to cut-in/out within criteria. To follow up OPS20 to check evaporator side. KENNETH/TINGWEI/YIHENG, 27/07/20 To check AHU for leaks     #2515-#2 AHU found with slight oil ponding within unable to determine the exact point of leak.Proceed to replace AHU.After c/o the AHU top up 2-1 & 2-2 freon.Checked AHU coupling for leaks,no leakage observed.2-1 LP=40psi & HP=110psi 2-2 LP=40psi & HP=115psi.Monitored cut in/out ok. #2515-#2 AHU: Old s/n: 032083  New s/n: 535114 Not: 2184178 raise to RSW. Done by Saini/Din/Koh.  27/07/20