3656 A/C 1-1,1656 2-1,2655 1-1 and 1655 ~~~~~ The following cars having low freon: #3656 a/c 1-1 #1656 a/c 2-1 #2655 a/c 1-1 #1655 a/c 1-1 Checked CCU for signs of freon leak,no leaks observed. Top up freon LP=40,HP=120.Monitored for 1 hour,pressure stable.Cut in/out ok. Done by Kumar/Jack/Sateesh/Koh. 20/03/20