EPA 608 609 - EPA Refrigerant Handling Leak Detection and Repair Questions and Answers 2

Question 1

What is the maximum allowable leak rate for comfort cooling equipment with a full charge of 50 or more pounds before repair is required under EPA Section 608?

Accepted Answer

10% per year

Answer

5% per year

Answer

15% per year

Answer

20% per year

Question 2

Which leak detection method uses a UV-reactive dye injected into the refrigerant circuit to pinpoint the source of a leak?

Accepted Answer

Fluorescent dye detection

Answer

Electronic leak detector

Answer

Ultrasonic detection

Answer

Bubble solution test

Question 3

An electronic leak detector's sensitivity is typically rated in which unit?

Accepted Answer

Parts per million (ppm)

Answer

Ounces per hour

Answer

Pounds per minute

Answer

Grams per day

Question 4

After completing a leak repair on a system, what must a technician verify before returning the system to service?

Accepted Answer

Verify the repair by performing a follow-up leak test

Answer

Charge the system to full capacity immediately

Answer

Replace the entire refrigerant charge with a new refrigerant

Answer

Submit a repair report to the EPA within 24 hours

Question 5

What does a "standing pressure test" involve when checking for refrigerant leaks?

Accepted Answer

Pressurizing the system with nitrogen and monitoring for pressure drop

Answer

Running the compressor at full load for 24 hours

Answer

Adding refrigerant and watching the sight glass

Answer

Measuring suction line temperature over time

Question 6

Which component is most commonly associated with refrigerant leaks in a split-system air conditioner?

Accepted Answer

Flare fittings and brazed joints

Answer

Condenser fan motor

Answer

Thermostat wiring

Answer

Air filter housing