Completed maintenance. Checked pressures, amp draw and capacitance. Capacitor is within range. Amp draw on compressor is very high. Also found system to be a little bit low on refrigerant. It is AR 22 Straight cool. Vertical AH. Foam cleaned evaporator coil and rinsed with hot water. Also cleaned out primary pan and drain line. Filter was sucked into photo return and very dirty. Underneath of evaporator coil is a little dusty most likely due to poor filtering. System is cooling to the best of its ability. There is evidence of a leak based on the pressures. Suggestion would be to replace the system not to repair it. This is for A Comfort Advisor to come out and give a free estimate on system replacement.