Returned to Replace filters and charge system with R22 refrigerant, replaced filters with 14x25x1, 14x20x1, 16x20x1, added 1lb of R22 to the system PSI 63/198, SH 14, SC 16, DeltaT 20, did not have to adjust blower speed at this time, system is running but due to age and condition multiple part failure is possible at anytime.