Question 131Refrigeration & AC - QMED
70% to passA device used to hold open the refrigeration compressor suction valve during starting to reduce the compression load is called what?
Acylinder unloader
Bdischarge line bypass
Csuction line bypass
Drelief valve
AI Explanation
The correct answer is A) cylinder unloader. A cylinder unloader is a device used to hold open the refrigeration compressor suction valve during starting. This reduces the compression load on the compressor, making it easier to start and reducing the initial power requirement. This helps prevent damage to the compressor during the starting process. The other options are incorrect because: B) a discharge line bypass is used to reduce the pressure on the compressor discharge side, C) a suction line bypass is used to reduce the suction pressure, and D) a relief valve is used to release excess pressure in the system, not to assist with compressor starting.
Related Questions
Q147:Refrigerant entering the compressor of a refrigeration system should be in which... Q56:Besides the evaporator pressure, the thermal expansion valve reacts directly to ... Q146:What is the physical state and pressure condition of refrigerant as it leaves a ... Q40:Which of the illustrated gauges is capable of measuring vacuums at the micron le... Q129:When replacing a thermostatic expansion valve power element, what is true concer...
Ready to test your knowledge?
Take a Refrigeration & AC - QMED Practice ExamOfficial Resources