EPA Section 608 Exam Questions with 100%
Correct Answers | Updated & Verified
Which appliances are covered by Section 608? - ✔️✔️Any appliance containing Class I or Class II
substance as a refrigerant and is used for household or commercial purpose.
What is the primary reason the EPA requires a service aperture or process stub on all
appliances? - ✔️✔️To add or remove refrigerant from the appliance.
Who sets the regulations for recovery machines? - ✔️✔️The EPA.
What is a "self-contained" recovery machine? - ✔️✔️It has it's own compressor (or other transfer
mechanism) to pump out refrigerants. It requires no assistance from any component in the
system that is being recovered.
Is HCFC-123 a "low" or "high" pressure refrigerant? - ✔️✔️Low as well as CFC-11 and CFC-113
Is CFC-12 a "low" or "high" pressure refrigerant? - ✔️✔️High as well as CFC-115, 500, 502 and
HCFC-22
What is the smallest container in which refrigerants may be sold to Section 608 certified
technicians? - ✔️✔️20 pounds
What must you do to the refrigerant in an appliance before disposing of the appliance? -
✔️✔️Ensure all refrigerant has been recovered from an appliance before disposal.
Who is responsible for removing the refrigerant from household refrigerators prior to disposal.
- ✔️✔️The final person in the disposal chain.
,What is the penalty for violation of the Clean Air Act? - ✔️✔️Fines up to $27,500 per day for
violation and possible loss of technician certification.
What is the bounty for information leading to a conviction? - ✔️✔️Up to $10,000.
What can happen if a technician cannot demonstrate an ability to use recovery or recycling
equipment? - ✔️✔️Revocation of the technicians certification.
What is the name of the process that removes refrigerant from a system and stores it without
testing or processing? - ✔️✔️Recovery
What is the name of the process that removes moisture and acids from the refrigerants but
does not test the refrigerant? - ✔️✔️Recycling
What is the name of the process that removes the moisture and acids from the refrigerant and
also chemically tests the refrigerant? - ✔️✔️Reclaiming
What must be done with reclaimed refrigerant before it can be legally resold? - ✔️✔️Must be
tested to meet the ARI Standard 700.
What is the preferred instrument for detecting small leaks? - ✔️✔️Electronic leak detector
What is the inert gas typically used in leak detection? - ✔️✔️Dry nitrogen
What is typically indicated by a dehydrated system failing to hold vacuum? - ✔️✔️The system
pressure will eventually read o PSIG if leak is present.
What should be done when recovering the refrigerant from a system where the refrigerant has
been improperly mixed? - ✔️✔️Recover refrigerant into a separate container.
, Can mixed refrigerants be reclaimed? - ✔️✔️No
What precautions should be taken when recovering refrigerant from systems with multiple
service valves? - ✔️✔️Make sure liquid refrigerant is not trapped between the valves.
What is the effect of low ambient temperature on the time required to complete recovery
refrigerant? - ✔️✔️Increased recovery times.
Technicians must explain to customers that recovery is necessary and is required by law. What
else should the technician tell the customer? - ✔️✔️That it is necessary to protect human health
and the environment.
What is different about any leaks in a system charged with a blended refrigerant? - ✔️✔️Because
their vapor pressures can vary widely with temperature, blended refrigerants leak from a
system at uneven rates.
What is "temperature glide"? - ✔️✔️When a refrigerant blends temperature curve is not a single
discreet line.
What is a ternary blend? - ✔️✔️Blend made by combining three refrigerants.
How should systems using a blended refrigerant be charged? - ✔️✔️Introduce a measured
charge of liquid into the high side.
Is there a "drop-in" refrigerant for CFC-12? - ✔️✔️No
How do you leak check an HCFC-134a system with a partial charge? - ✔️✔️By using pressurized
nitrogen.
Correct Answers | Updated & Verified
Which appliances are covered by Section 608? - ✔️✔️Any appliance containing Class I or Class II
substance as a refrigerant and is used for household or commercial purpose.
What is the primary reason the EPA requires a service aperture or process stub on all
appliances? - ✔️✔️To add or remove refrigerant from the appliance.
Who sets the regulations for recovery machines? - ✔️✔️The EPA.
What is a "self-contained" recovery machine? - ✔️✔️It has it's own compressor (or other transfer
mechanism) to pump out refrigerants. It requires no assistance from any component in the
system that is being recovered.
Is HCFC-123 a "low" or "high" pressure refrigerant? - ✔️✔️Low as well as CFC-11 and CFC-113
Is CFC-12 a "low" or "high" pressure refrigerant? - ✔️✔️High as well as CFC-115, 500, 502 and
HCFC-22
What is the smallest container in which refrigerants may be sold to Section 608 certified
technicians? - ✔️✔️20 pounds
What must you do to the refrigerant in an appliance before disposing of the appliance? -
✔️✔️Ensure all refrigerant has been recovered from an appliance before disposal.
Who is responsible for removing the refrigerant from household refrigerators prior to disposal.
- ✔️✔️The final person in the disposal chain.
,What is the penalty for violation of the Clean Air Act? - ✔️✔️Fines up to $27,500 per day for
violation and possible loss of technician certification.
What is the bounty for information leading to a conviction? - ✔️✔️Up to $10,000.
What can happen if a technician cannot demonstrate an ability to use recovery or recycling
equipment? - ✔️✔️Revocation of the technicians certification.
What is the name of the process that removes refrigerant from a system and stores it without
testing or processing? - ✔️✔️Recovery
What is the name of the process that removes moisture and acids from the refrigerants but
does not test the refrigerant? - ✔️✔️Recycling
What is the name of the process that removes the moisture and acids from the refrigerant and
also chemically tests the refrigerant? - ✔️✔️Reclaiming
What must be done with reclaimed refrigerant before it can be legally resold? - ✔️✔️Must be
tested to meet the ARI Standard 700.
What is the preferred instrument for detecting small leaks? - ✔️✔️Electronic leak detector
What is the inert gas typically used in leak detection? - ✔️✔️Dry nitrogen
What is typically indicated by a dehydrated system failing to hold vacuum? - ✔️✔️The system
pressure will eventually read o PSIG if leak is present.
What should be done when recovering the refrigerant from a system where the refrigerant has
been improperly mixed? - ✔️✔️Recover refrigerant into a separate container.
, Can mixed refrigerants be reclaimed? - ✔️✔️No
What precautions should be taken when recovering refrigerant from systems with multiple
service valves? - ✔️✔️Make sure liquid refrigerant is not trapped between the valves.
What is the effect of low ambient temperature on the time required to complete recovery
refrigerant? - ✔️✔️Increased recovery times.
Technicians must explain to customers that recovery is necessary and is required by law. What
else should the technician tell the customer? - ✔️✔️That it is necessary to protect human health
and the environment.
What is different about any leaks in a system charged with a blended refrigerant? - ✔️✔️Because
their vapor pressures can vary widely with temperature, blended refrigerants leak from a
system at uneven rates.
What is "temperature glide"? - ✔️✔️When a refrigerant blends temperature curve is not a single
discreet line.
What is a ternary blend? - ✔️✔️Blend made by combining three refrigerants.
How should systems using a blended refrigerant be charged? - ✔️✔️Introduce a measured
charge of liquid into the high side.
Is there a "drop-in" refrigerant for CFC-12? - ✔️✔️No
How do you leak check an HCFC-134a system with a partial charge? - ✔️✔️By using pressurized
nitrogen.
