CHS Type 2

The sale of CFC and HCFC refrigerants has been restricted to certified technicians since

• November 15, 1993

• July 1, 1992

• December 31, 1995

• November 14, 1994

A chiller for comfort cooling that contains 50 pounds or more of R-123 is leaking. Starting in 2019, at what leak rate does the EPA require that the equipment be repaired?

• 5%

• 10%

• 15%

• 20%

A cold storage warehouse chooses not to repair an appliance containing R-22 that is leaking above the threshold rate. How long can the facility continue to operate that appliance before it must be retrofitted or retired, assuming no extensions apply?

• 1 month

• 9 month

• 12 month

• 24 month

A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be leaking beyond the applicable leak rate threshold. Unless granted additional time, how many days do you have to repair the leak and conduct the initial leak verification test?

• 1 days

• 10 days

• 30 days

• 45 days

A company uses a chiller that diverts 55% of its cooling capacity to one of its manufacturing lines and 45% of its cooling capacity to air condition the office spaces. Which leak rate category would this chiller be in?

• Industrial process refrigeration

• Ice making refrigeration

• Commercial refrigeration

• Comfort cooling

A customer has an industrial process refrigeration system that contains 1000 lbs. of R-22 that has exceeded the applicable leak rate threshold. How often is the customer required to perform a leak inspection?

• Every month

• Every 3 month

• Every 6 month

• Every 12 month

After a leak repair of a supermarket rack using 3000 lbs of R-22 and a successful initial verification test, when must a follow-up leak verification test be conducted?

• The same day.

• The next day.

• Within 10 days.

• Within 30 days.

After installation of a field piped split system, the unit should first be pressurized with;

• air and leak checked.

• R-22 and leak checked.

• R-410A and leak checked.

• nitrogen and leak checked.

After refrigerant liquid has been recovered from the appliance, any remaining vapor is;

• purged to the atmosphere.

• isolated in the appliance.

• pumped into appliance receiver.

• removed by the recovery system.

An initial leak verification test failed after repairing a leak in a rack refrigeration system for a supermarket using an HCFC refrigerant. What would be the next step(s)?

• Immediately retrofit or retire the appliance.

• Conduct additional repairs within the 30-day repair window or mothball the appliance.

• Conduct a follow-up verification test.

• Report the amount of refrigerant added to the system to the EPA.