In preparation for repairing a leaking...

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Question 1 of 205eccef9dbacbc34ba4d4611b

In preparation for repairing a leaking refrigeration system normally containing 50 lbs.of a class II refrigerant, it has been determined that the system pressure is presently 0 psig. In terms of refrigerant recovery, which of the following statements is true?

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🔍 Key Concepts

• Refrigerant recovery requirements when a system is at or near 0 psig • Differences between recovering liquid vs. vapor refrigerant in a leaking system • Safety and environmental rules about not venting refrigerant to atmosphere

💭 Think About

• How does system pressure at 0 psig affect the state and amount of refrigerant remaining in the system? • In what order (liquid or vapor first) is recovery typically most efficient and safest for a system that normally holds a large charge (50 lbs)? • Under what conditions, if any, is it acceptable to skip recovery and proceed directly to repair?

✅ Before You Answer

• Verify what EPA/USCG rules say about mandatory recovery vs. venting when pressure is at 0 psig • Consider whether a system that normally holds 50 lbs can still contain liquid refrigerant at 0 psig depending on temperature • Check standard best practice for recovery sequence: is liquid or vapor removal usually used to remove the bulk of the charge?

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