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A typical setting for the high-pressure cut-out control on a recovery unit used for evacuating the refrigerant from a low-pressure chiller is:

A. 2 psig
B. 5 psig
C. 10 psig
D. 15 psig

Answer :

Certainly! When dealing with a recovery unit for evacuating refrigerant from a low-pressure chiller, it's important to know the standard settings for the high pressure cut-out control. Here's a detailed explanation:

1. Understanding the Equipment: A low-pressure chiller generally works with refrigerants that have relatively lower pressure settings when compared with high-pressure chillers. The high pressure cut-out control is designed to stop the recovery process if the pressure gets too high, ensuring safety and maintaining the system's integrity.

2. Typical Pressure Settings: In low-pressure chiller systems, the high-pressure cut-out setting needs to be adequate to prevent excessive pressure that could damage the system or be unsafe.

3. Common Setting: For low-pressure chillers, a typical setting for the high-pressure cut-out control is usually around 10 psig (pounds per square inch gauge). This setting is chosen because it provides a balance between operational efficiency and safety, ensuring that the refrigerant can be safely evacuated without risk of over-pressurization.

Hence, for evacuating refrigerant from a low-pressure chiller, the high-pressure cut-out control is typically set at 10 psig.

Therefore, the answer is:
C. 10 psig.

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