1 Refrigerant Recovery Fundamentals and Equipment Free Online FlashCards

What does refrigerant recovery do?

Recovery removes refrigerant from an appliance and transfers it into an external container; it does not necessarily clean or test the refrigerant.

What does Section 608 generally prohibit during stationary-equipment service?

In the United States, Section 608 generally prohibits intentional venting while servicing, maintaining, repairing, or disposing of stationary air-conditioning and refrigeration equipment.

How should a technician verify refrigerant identity?

Check the appliance nameplate or service records for the refrigerant designation. If identity is uncertain, use an appropriate identifier or seek qualified assistance rather than guessing.

What does the refrigerant safety label A2L indicate?

ASHRAE safety-group labels use a letter for toxicity classification and a number for flammability. A2L indicates lower toxicity and lower flammability.

What is the function of a recovery machine?

A recovery machine moves refrigerant from the appliance into a recovery cylinder. It must be appropriate for the refrigerant and appliance category.

Why must recovered refrigerants be kept separate?

Keep different refrigerants separate. Mixing can make later reuse or reclamation difficult or impossible.

What happens to refrigerant in the evaporator?

The evaporator absorbs heat, causing refrigerant to boil at low pressure.

How does recycling differ from recovery?

Recycling cleans refrigerant for reuse. Recovery alone only removes it from the appliance.

What makes refrigerant reclamation distinct?

Reclamation processes refrigerant and verifies it against specified purity requirements.

Why use a refrigerant scale during recovery?

A refrigerant scale measures cylinder weight, helping ensure its allowable gross weight is not exceeded.

What is the purpose of low-loss fittings?

Low-loss fittings help limit refrigerant release when hoses are connected or disconnected.

Why monitor cylinder weight instead of relying on pressure?

Overfilling can cause dangerous pressure increases, relief-device discharge, or cylinder failure. Monitor weight; pressure alone does not show how full the cylinder is.