EPA Practice: Core 3

Non-condensables will cause;

• Low superheat

• Low discharge pressure

• High superheat

• High discharge pressure

When dehydrating a system, it should be evacuated to a minimum level of;

• 30 inches of Mercury

• 25,000 Microns

• 500 Microns

• EPA does not have a requirement

What must the equipment owners/operators include in recovered refrigerant records for equipment with refrigerant charges that range from 5 to 50 pounds?

• The quantity of refrigerant (by type) added or recovered from disposed appliances each year and quantity of refrigerant (by type) sent for reclamation or destruction.

• The quantity of refrigerant (by type) added or recovered from disposed appliances in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction.

• The type of refrigerant, the amount added for seasonal variance, the amount added to a new unit, recovered from disposed appliances in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction.

• The amount of new refrigerant added to a system in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction.

EPA regulations require that all Industrial Process Refrigeration (IPR) systems containing more than 50 pounds of refrigerant MUST be repaired when the annual leak rate exceeds;

• 10 %

• 20 %

• 30 %

• 40 %

Which of the following refrigerants is classified as a very high-pressure refrigerant?

• CFC-11

• R-744

• HCFC-123

• R-410A

When using a recovery unit on a system containing 100 lbs. of R-410A it must be evacuated to;

• 0 inches of Mercury

• 4 inches of Mercury

• 10 inches of Mercury

• 15 inches of Mercury

A new split system should be checked for leaks by;

• pressurizing the system with a few ounces of HCFC-22 and compressed air.

• pressurizing the system with a few ounces of CFC-12 and an inert gas.

• releasing the factory refrigerant charge in the condensing unit.

• pressurizing the system with a few ounces of system refrigerant and an inert gas.

A comfort cooling system that contains 50 pounds or more of R-410A is leaking. What will be the new maximum allowable annual leak rate starting in 2019?

• 5%

• 10%

• 15%

• 20%

Refrigerants CFC-12, HCFC-22, and HFC-134a are all classified as Type _______ substances.

• B-1

• B-2

• A-1

• A-2

If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be;

• retrofitted or retired within 3 months

• retrofitted or retired within 12 months.

• replaced within 3 months.

• replaced within 12 months.