EPA type 3 video quiz

What are the three main types of EPA 608 certifications, in addition to the Core certification?

• Small appliances, medium-pressure appliances, very high-pressure appliances

• Small appliances, high-pressure appliances, very low-pressure appliances

• Residential appliances, commercial appliances, industrial appliances

• Type A, Type B, Type C

What unique characteristic distinguishes a leak on the low-pressure side of a low-pressure appliance from a leak on the high-pressure side?

• Refrigerant will leak out at a faster rate.

• Air will be sucked into the system.

• The system will immediately shut down.

• The leak will be undetectable.

What is the primary function of a purge unit in a low-pressure refrigeration system?

• To increase the system's cooling capacity.

• To recover refrigerant from the system.

• To remove non-condensable gases (like air) from the system.

• To add refrigerant to the system.

What is the required evacuation level for a low-pressure appliance using recovery equipment manufactured after November 15, 1993?

• 0 inches of Hg vacuum

• 4 inches of Hg vacuum

• 25 mm Hg absolute

• 10 inches of Hg vacuum

Are you enjoying the video lesson?

• Yes

• No

What is the maximum test pressure recommended when pressure testing a low-pressure device to avoid blowing the rupture disk?

• 5 PSI

• 10 PSI

• 20 PSI

• 50 PSI

When charging a low-pressure refrigerant into a chiller unit where water is present, what is the initial step to prevent freezing and damage?

• Add liquid refrigerant slowly

• Charge with vapor until pressure is above 32° saturation

• Evacuate the system completely

• Use a heating blanket on the chiller barrel

What is the specific test used to leak check chiller tubes?

• Electronic leak detection

• Pressure decay test

• Hydrostatic tube test

• Vacuum test

What is the recommended method to clear a frosted refrigerant sight glass?

• Use a torch to melt the frost

• Spray with isopropyl alcohol

• Wipe with a dry cloth

• Apply a heating blanket