When replacing a run capacitor, what percentage must the replacement capacitor be within for correct operation?

Prepare for the Refrigeration and Air Conditioning Mechanics (313A) Test. Study with flashcards and multiple choice questions, hints and explanations included. Ace your exam!

When replacing a run capacitor, it is essential that the replacement capacitor closely matches the original in both capacitance and voltage rating to ensure proper operation of the system. The correct tolerance for replacement run capacitors is typically +/- 10%. This means that the capacitance of the replacement capacitor can deviate from the original's rated capacitance by up to 10% on either side and still function effectively without causing issues within the system.

Choosing a replacement that is too far outside this range could lead to decreased efficiency, increased heat generation, or even failure of the motor or system it's intended to support. Thus, adhering to the +/- 10% tolerance helps maintain the performance and longevity of the equipment being serviced.

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