2667 A/C 1-1 DT check found coolant faul ~~~~~ 2667 A/C 1-1 DT check found coolant fault.  2667 A/c 1-1 found LP = 10 psi, HP = 60 psi. Charged freon to LP = 40 psi, HP = 110 psi. Monitor for 2 hrs - OK. No leakage found on A/c pipings. A/c cut in/out operation - OK.  Aminur/Zaidi 44428