#5 EPA 608 Type II

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

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.

Before making a major repair, technicians must evacuate an appliance or component containing more than 200 pounds of R-410A to which of the following levels?

• 0 psig

• 25 mm Hg absolute

• 10 inches of Hg vacuum

• 15 inches of Hg vacuum

How can you speed up the removal of the refrigerant charge from a system?

• Using a smaller recovery vessel.

• Cooling the recovery cylinder to lower its pressure.

• Using a two-stage vacuum pump.

• Heating the recovery cylinder to raise its pressure.

Identify the best method to charge a system that has both an air-cooled condenser and evaporator with a nameplate charge of 80 pounds.

• Vapor charge through the suction service valve.

• Liquid charge through the discharge service valve.

• Liquid charge through the suction service valve.

• Liquid charge through the liquid-line service valve.

Liquid charging of an R-410A refrigeration system with risk of freezing is begun with vapor from a vacuum level to a pressure of approximately;

• 32 psig.

• 63 psig.

• 90 psig.

• 110 psig.