What is the purpose of the pressure transducer as shown in the illustration? GS-RA-17 Illustration GS-RA-17: the U.S. Coast Guard has not released this illustration.

Correct Answer: Option A — it senses compressor suction pressure and controls the quench valve

Refrigeration control logic utilizes suction pressure transducers to monitor evaporator conditions and regulate liquid injection or quench valves. This protects semi-hermetic compressors from excessive discharge temperatures by managing desuperheating refrigerant flow directly into the suction stream.