EPA 608 Type 3

The EPA requires that all comfort cooling systems with more than 50 lb. of refrigerant be repaired when the annual leak rate exceeds

• 50%

• 30%

• 25%

• 15%

The EPA requires that all commercial and industrial process refrigeration systems with more that 50 lb. of refrigerant be repaired when leak rates exceed

• 15%

• 25%

• 35%

• 50%

Tags

NGSS.HS-ETS1-3

Once the technician has reached the required level of vacuum when recovering a system, they should wait a few minutes and monitor the system. If the pressure rises, indicating that there is _________ in the system, recovery must be repeated.

• nitrogen

• refrigerant

• ozone

• non-condensables

Which of the following is an example of an HCFC refrigerant?

• R-12

• R-402

• R-22

• R-134a

Which of the following refrigerants is considered an HFC-type of refrigerant?

• R-134a

• R-12

• R-22

• R-11

The abbreviation for refrigerants containing hydrogen chlorine, fluorine, and carbon is ____.

• HFC

• HCFC

• CFC

• HFAC

The abbreviation for refrigerants containing fluorine, carbon, and hydrogen is ____.

• HFC

• HCFC

• CFC

• HFAC

To clean refrigerant by the use of filter dryers and then reuse it is called ____.

• recovery

• renew

• reclaim

• recycle

To remove the refrigerant from a system without any testing or processing and to be put back into the same system is called ____.

• recovery

• renew

• reclaim

• recycle

The DOT-approved cylinder used for recovering refrigerant is _________.

• gray top yellow bottom

• gray bottom white top

• gray bottom yellow top

• gray and yellow striped