Question 139Refrigeration & AC - 1st Asst/Chief
70% to passA device used to hold open the refrigeration compressor suction valve during starting to reduce the compression load is called what?
Arelief valve
Bdischarge line bypass
Ccylinder unloader
Dsuction line bypass
AI Explanation
The correct answer is C) cylinder unloader. A cylinder unloader is a device used to hold open the refrigeration compressor suction valve during starting to reduce the compression load. This helps the compressor overcome the high pressure differential when starting, preventing damage to the compressor. The other options are not specifically used for this purpose - a relief valve, discharge line bypass, and suction line bypass serve different functions in a refrigeration system.
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