Performed annual cooling maintenance. Split system ac back yard. Tested system. System operational at this time. Tested dual capacitor low 40-7.5@35.4-7.3. Outside of manufactures recommended range. Recommended to replace part before failure. Contactor starting to Pitt and light burning, keep an eye on it. Gave unit a bath. Tested system refrigerant. Disconnect pull out alittle tough to get out. 20-25-1 due to be changed.