EPA 608 609 Type III 2

Question 1

Type III certification covers the servicing of which type of appliance?

Accepted Answer

Low-pressure appliances

Answer

High-pressure appliances

Answer

Small appliances

Answer

Motor vehicle air conditioners

Question 2

Which refrigerant is commonly found in low-pressure appliances?

Accepted Answer

R-123

Answer

R-410A

Answer

R-134a

Answer

R-22

Question 3

Low-pressure refrigerants have a boiling point at atmospheric pressure that is generally:

Accepted Answer

Above 50°F (10°C)

Answer

Below 0°F (-18°C)

Answer

Exactly 32°F (0°C)

Answer

Below -40°F (-40°C)

Question 4

A low-pressure appliance normally operates with the low side:

Accepted Answer

Under a vacuum (below atmospheric pressure)

Answer

Above 200 psig

Answer

At exactly atmospheric pressure

Answer

Above 500 psig

Question 5

Because low-pressure systems run under a vacuum, the main concern with leaks is:

Accepted Answer

Air and moisture leaking into the system

Answer

Refrigerant rapidly venting out

Answer

Oil being forced out

Answer

High-pressure rupture

Question 6

What device removes air and other non-condensables from a low-pressure chiller during operation?

Accepted Answer

Purge unit

Answer

Receiver

Answer

Filter-drier

Answer

Accumulator

Question 7

The required recovery level for a low-pressure appliance with a full charge during disposal is:

Accepted Answer

25 mm Hg absolute

Answer

0 psig

Answer

10 inches of vacuum

Answer

15 psig