Air conditioning tune-up and safety inspection. Cleaned and serviced the condensing unit. Tested all mechanical parts. Found contactor pitted and cap well below acceptable range. Changed both parts, using 45/5 and 1 shunt. Tested refrigerant levels, and they were in the accurate efficiency range. The system is operating and cooling as it should be at this time. Last visit on plan, will need to be renewed in the fall/furnace visit.