Replaced compressor on SW1 unit, pressure tested, evacuated, added 8 lbs r22, system is cooling. Replaced condenser fan motor on S1 unit. Replaced filters for all systems. Checked charge, washed condensers and inspected all electrical on SW, NW and E units. Replaced capacitor on SW1 unit. Added 3 lb r22 to S2, 4lb r22 to S1.