3642 a/c 1-2, 2-1, 3641 a/c 1-1.  Having ~~~~~ 3642 a/c 1-2, 2-1, 3641 a/c 1-1.  Having     Checked and found LP & HP was low (out of range) Charge freon on #3642 a/c 1-2,2-1 & #3641 a/c 1-1 (HP=140psi & LP=50psi) Monitor a/c for 1 hour,cut in/out ok.Temp 23degC.To be further monitor during M/L service. Done by Henry/Alauddin/Sufhian. 29/03/20