4 Safe Refrigerant Handling and Recovery Online Quiz Questions

It identifies the exact leak location.

It can indicate that the system is leaking, but a separate locating method is needed.

It confirms that the repair has passed verification.

It shows whether refrigerant can be transferred to another owner.

True

False

Use a cylinder designed and rated for refrigerant recovery.

Use a disposable refrigerant container if it is clearly labeled.

Use an oxygen cylinder if its pressure rating is high enough.

Use a compressed-air cylinder after removing its label.

It must be placed in a new cylinder.

It must be recycled by the technician.

It must be reclaimed by an EPA-certified reclaimer.

It must be mixed with the recipient's refrigerant.

Secure the cylinder upright during use, storage, and transport.

Combine compatible refrigerants in one cylinder to save space.

Use a scale to ensure the marked maximum fill weight is not exceeded.

Protect the cylinder from heat and physical damage.

Fill the cylinder completely so no refrigerant is left behind.

True

False

Evacuate the non-leaking parts to the required level.

Leave the leaking part above 0 psig to avoid contamination.

Evacuate the leaking parts to the lowest attainable level that does not substantially contaminate recovered refrigerant.

Skip evacuation of all non-leaking parts whenever any leak is present.

Evacuate it to 15 inches Hg vacuum because all systems in this charge category use that target.

Evacuate it to 10 inches Hg vacuum, matching the stated pressure class and charge category.

Evacuate it to 25 mm Hg absolute because that target applies to every appliance.

Use the small-appliance recovery percentage instead of an evacuation level.

True

False

It can be transferred directly to the new owner as long as it is in a labeled recovery cylinder.

It must be reclaimed by an EPA-certified reclaimer before it is sold or transferred to the new owner for use.

It must be recycled by the technician, after which ownership transfer is unrestricted.

It can be transferred to the new owner if it came from an appliance with the same refrigerant type.

Any recovery unit may be used if it is rated for the system pressure; refrigerant type does not matter.

Use equipment certified for the refrigerant, but manufacturer operating instructions are optional.

Use equipment certified to meet applicable EPA requirements and rated for the refrigerant and its pressure and safety class, following its instructions.

Use equipment intended for oxygen service if it has the required pressure rating.

Weigh the cylinder during recovery and stop before its marked maximum fill weight is reached.

Fill the cylinder to its maximum weight while cold because warming will reduce its pressure.

Use cylinder pressure alone to determine when the maximum fill weight has been reached.

Combine refrigerants in the cylinder if doing so keeps the total weight below the maximum.

Repeat the decay test until the pressure change identifies the exact leak location.

Use a decay test by itself because it both confirms and locates leaks.

Use an electronic detector only to verify repairs, not to locate leaks.

Use the decay test to show that a leak exists, then use a locating method to find its position.