4 Refrigerant Recovery and Cylinder Handling Free Online FlashCards

What does refrigerant recovery do?

Recovery transfers refrigerant from an appliance into an external container; it does not require cleaning or testing the refrigerant.

What does EPA Section 608 generally prohibit during service?

Intentional venting during service is generally prohibited under EPA Section 608.

What must recovery equipment be compatible with?

Use a recovery machine, hoses, fittings, and cylinder that are compatible with the refrigerant and its pressure.

What extra precaution applies when recovering flammable refrigerants?

Use equipment specifically approved for that refrigerant and follow its additional safety requirements.

Can a vacuum pump be used to recover refrigerant?

Do not use a vacuum pump to recover refrigerant. A vacuum pump is used for evacuation after refrigerant has been recovered.

What kind of cylinder should be used for recovery?

Use an authorized, refillable recovery cylinder—not a disposable charging cylinder.

What should be checked before using a recovery cylinder?

Verify that the cylinder’s pressure rating and condition are suitable. Do not use one with damage, a faulty valve, or an expired requalification.

How should different refrigerants be stored during recovery?

Keep different refrigerants separate and use a dedicated, clearly identified cylinder for each refrigerant.

How should a recovery cylinder’s fill be monitored?

Put the cylinder on a scale before recovery and control the fill by weight. Do not rely on pressure alone to estimate how full it is.

Does the common 80% liquid-volume limit always determine cylinder fill?

A common training limit is 80% liquid volume, but the applicable cylinder and refrigerant limits control.

What should you do if the recovery cylinder reaches its limit?

Stop recovery if the cylinder reaches its limit, and do not bypass an overfill shutoff.

How does evacuation differ from recovery?

Recovery transfers refrigerant into an external cylinder; evacuation removes air, moisture, and other noncondensables from the appliance after recovery.