If not properly installed, a hot-gas muffler might trap:

If not properly installed, a hot-gas muffler might trap:

• A. Hot gas.
• B. Superheated vapor.
• C. Suction gas.
• D. Oil.

Answer: (D)

A hot-gas muffler sits in the discharge path to quiet pulsations and, importantly, to give separating oil a chance to drain back to the compressor. If it isn’t installed correctly, oil can get trapped inside the muffler instead of returning to the lubrication system. That trapped oil can lead to lubrication problems, oil logging, and potential compressor wear or damage. The device isn’t meant to trap hot gas, superheated vapor, or suction gas—the volume flowing through it is the discharge gas, while the oil is the liquid that tends to accumulate if the return path is blocked.

A hot-gas muffler sits in the discharge path to quiet pulsations and, importantly, to give separating oil a chance to drain back to the compressor. If it isn’t installed correctly, oil can get trapped inside the muffler instead of returning to the lubrication system. That trapped oil can lead to lubrication problems, oil logging, and potential compressor wear or damage. The device isn’t meant to trap hot gas, superheated vapor, or suction gas—the volume flowing through it is the discharge gas, while the oil is the liquid that tends to accumulate if the return path is blocked.