Before charging a refrigeration unit, unless...

Question 1 / 270705eccef9dbacbc34ba4d460bb

Question 1 of 270705eccef9dbacbc34ba4d460bb

Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should be prepared in what way?

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Question 1 of 27070

Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should be prepared in what way?

🔍 Key Concepts

• Refrigeration charging procedures on marine systems • How to remove air and moisture from hoses before connecting to the system • Why contaminants (air, moisture, solvents, oil) are dangerous to a refrigeration plant

💭 Think About

• Which one of these preparations would help ensure that no air or non‑condensable gases are introduced into the system through the hoses? • Which option could add unwanted contaminants (like solvent or excess oil) into the refrigeration system, and why is that a problem? • On a practical shipboard job, what simple step do mechanics take with the manifold hoses right before opening the valves to the system?

✅ Before You Answer

• Eliminate any choice that would introduce foreign chemicals or solvents into the system that are not refrigerant itself • Consider which method is actually taught and used in standard charging practice with manifold gauges and hoses • Think about the goal: the hoses should contain only refrigerant, not air, moisture, or cleaning agents, when you start charging

Question 1 of 27070

Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should be prepared in what way?

they should be warmed in an oven

they should be flushed with clean refrigerant oil

they should be cleaned with carbon tetrachloride

they should be purged with refrigerant

Question 1 / 270705eccef9dbacbc34ba4d460bb

Question 1 of 270705eccef9dbacbc34ba4d460bb

Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should be prepared in what way?

Back

Question 1 of 27070

Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should be prepared in what way?