Carbon deposits forming on the discharge valves of an air compressor are caused by oil deterioration under high pressure. The first step in reducing these deposits would be to __________.

Correct Answer: Option C — reduce the discharge temperatures with intercoolers

Carbon deposits result from the thermal degradation of lubricating oil at high discharge temperatures. Improving intercooling efficiency lowers the temperature of the air entering the next stage, which reduces the overall discharge temperature, thereby minimizing the oxidation of the oil and preventing the formation of harmful carbonaceous deposits.