TOM D

Question 1

System-dependent or passive recovery equipment;

Answer 1

Captures refrigerant into a non-pressurized container.

Question 2

When using a system-dependent recovery system on an appliance that has a non-operating compressor, the technician should;

Answer 2

Place access fitting on both the low and high side of the system.

Question 3

A small appliance is defined by EPA as

Answer 3

Appliances manufactured, charged, and hermetically sealed in a factory that contain 5 lbs or less of refrigerant.

Question 4

Recovering multiple types of refrigerants in the same cylinder;

Answer 4

will make the reclaimed refrigerants unreclaimable.

Question 5

System-dependent recovery methods may only be used on appliances containing;

Answer 5

15 pounds of refrigerant or less.

Question 6

Small appliances are equipped with a straight piece of tubing (process stub) that is used;

Answer 6

As the installation location for a piercing-type access valve.

Question 7

Which HC refrigerant is allowed for use in NEW Domestic Small Appliances?

Answer 7

R-600a

Question 8

Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, and water. These refrigerants;

Answer 8

Should not be recovered.

Question 9

With a non-operating system compressor, recovery equipment must be capable of recovering;

Answer 9

80 percent of the refrigerant or achieving 4 inches of vacuum.

Question 10

Type I Certification is required for;

Answer 10

persons handling refrigerant during maintenance, service, or repair of small appliances.

Question 11

When filling a charging cylinder with a regulated refrigerant;

Answer 11

The refrigerant vapor that is vented off the top of the cylinder must be recovered.

Question 12

Self-contained or active recovery equipment;

Answer 12

Has its own means to recover refrigerant.

Question 13

If a strong odor is detected while performing a refrigerant recovery process,

Answer 13

A compressor burnout has likely occurred.

Question 14

Recovery equipment must be;

Answer 14

Certified by an EPA-approved testing laboratory.

Question 15

After the refrigerant has been recovered, which of the following can be used to flush the system?

Answer 15

Nitrogen

Question 16

Technicians who perform sealed-system service on small appliances must have;

Answer 16

Type I or Universal certification.

Question 17

When a system is in deep vacuum;

Answer 17

Never energize the compressor.

Question 18

If, after installing a fitting for the purpose of recovering the appliance’s refrigerant, you find that the system pressure is 0 psig;

Answer 18

Refrigerant recovery is not required.

Question 19

When using a system-dependent recovery system on an appliance that has an operating compressor, the technician should;

Answer 19

Run the compressor and recover from the high side of the system only.

Question 20

Applying heat, with a heat gun, to the compressor;

Answer 20

can help vaporize any trapped liquid refrigerant during recovery.

Question 21

If regulations change after the technician becomes certified;

Answer 21

The technician is responsible for complying with any changes to the regulations.

Question 22

On a system with an operating compressor, recovery equipment must be capable of recovering;

Answer 22

90% refrigerant or achieving 4 inches of vacuum.

Question 23

When pressurizing a system with nitrogen you should

Answer 23

charge through a pressure regulator. install a relief valve in the line downstream from the pressure regulator.

Question 24

Which of the following is true regarding refrigerant leaks on small appliances?

Answer 24

EPA does not require repair, but leaks should be repaired whenever possible.

Question 25

Which of the following is an example of a non-condensable?

Answer 25

Air