WorksheetsCORE TEST 1
Total questions: 30
Worksheet time: 15mins
The color marking that is required on all pipes, hoses, or other devices which a flammable refrigerant passes and where a service connection is probable, must extend a minimum of how many inch(es) in both directions from such locations?
1
2.5
3.5
4.6
A refillable cylinder must not be filled above what percent of its capacity by weight:
50%
70%
80%
95%
HFC refrigerants contain which of the following?
Fluorine, & Carbon
Chlorine, Fluorine, & Hydrogen
Hydrogen, Chlorine, & Carbon
Hydrogen, Fluorine, & Carbon
What happens if EPA regulations change after a technician becomes certified?
The technician certification is grandfathered for one year to allow time for re-certification.
It will be the technician's responsibility to comply with any future changes in the law.
The technician must take a new online certification test.
The technician must attend a class to become re-certified
How do refrigerant blends leak from a system?
At a faster rate than other refrigerants
At uneven rates due to different vapor pressures
At a slower rate than other refrigerants
In the same way as other refrigerants.
As of 2017, how much can a technician be fined for violating the Clean Air Act, including knowingly releasing non-exempt refrigerant from appliances.
$10,000 per day per violation
$17,531 per day per violation
$27,500 per day per violation
$44,539 per day per violation
Which element in a CFC or HCFC molecule causes ozone depletion?
Fluorine
Chlorine
Carbon
hydrogen
Refrigerant cylinders should be all of the following EXCEPT:
Be free of rust and damage.
Filled to 95% of capacity.
Be labeled.
Be secure.
Distributors must verify which of the following before they can sell HFC or HCFC refrigerant?
The Distributor is a section 608 certified distributor.
The distributor is selling section 608 certified refrigerant.
The purchaser owns certified recovery and/or recycling equipment.
The purchaser is or employs a Section 608 certified technician.
Which of the following is not a reason to recover refrigerants?
Provide supplies for service after the refrigerant has been phased out.
Prevent venting to the atmosphere.
Prevent stratospheric ozone depletion.
Avoid violating the warranty on equipment.
What range is displayed on a high pressure gauge on a service manifold?
500 microns to 0 psi
0 to 200 psi
0 to 800 psi
250 psi to 750 psi
What should a technician do if they discover that some R-410A was added to an R-22 system?
Vent the refrigerant since it cannot be reclaimed.
Recycle the refrigerant.
Recover the mixture in a separate recovery tank.
Recover and use in another system.
Which of the following appliances is NOT covered by EPA section 608 regulations?
Freezers
Air Conditioning and Refrigeration Equipment
Commercial Refrigeration Equipment
Desiccant Dehumidifiers
Which of the following is not a violation of the refrigerant management regulations under the Clean Air Act?
Failing to recover refrigerant in a system to the required evacuation level.
Servicing a system that uses CFCs or HCFCs after the phaseout of those refrigerants.
Failing to recover refrigerant in a leaking system to at least 0 psig.
Adding nitrogen to a fully charged system, then call the mixture a "leak check gas" and venting the mixture to the atmosphere.
In the event of a large release of CFC, HCFC, or HFC refrigerant in a contained area which of the following is true?
Safety googles and lined butyl gloves are sufficient.
Self-contained breathing apparatus (SCBA) or leaving the area is required
Respiratory protection is not required.
Dust masks are sufficient
What factor does NOT affect the speed of evacuation?
The size of the equipment being evacuated.
The ambient temperature.
The amount of moisture in the system.
The brand of micron gauge used.
Which of the following refrigerant releases is considered a violation of the prohibition on venting?
Release of "de minimis" quantities in the course of making good faith attempts to recapture and recycle or safely dispose of refrigerant.
Release of mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully charged system to leak check the appliance.
Refrigerants emitted in the course of normal operation of an appliance.
Refrigerants emitted when connecting or disconnecting low loss hoses to charge or service an appliance
A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance?
Add R-22 after the repair is complete.
Retrofit the unit to R-407C.
Use recovered or recycled R-22 from the same owner.
Top off the unit with R-410a.
You have to leak check a unit which has lost a complete charge. Which gas(es) would cause the LEAST damage to the environment?
Dry nitrogen and R-22
Compressed air and R-12
Dry nitrogen
Dry nitrogen and R-134a
Which refrigerant depletes the ozone layer?
R-717
R-744
R-22
R-32
What is the strongest evidence that HCFCs are in the stratosphere?
Chemical reactions predict there should be HCFCs in the upper atmosphere.
Measurement of chlorine in air samples from the lower atmosphere.
Measurement of HCFCs in air samples from the stratosphere.
Satellite measurements of light passing through the atmosphere.
Which of the following is NOT a recommended safety practice when operating refrigerant recovery or recycling equipment?
Wear safety glasses.
Wear protective gloves.
Follow all safety precautions for the equipment.
Remain at least 5 feet away from any operating equipment.
What characteristics of HFC refrigerants make them damaging to the environment?
They are toxic to plants and animals at low doses.
They contain chlorine which damages the ozone layer.
They have high Ozone Depletion Potential (ODP)
They can have very high global warming potentials.
During servicing of a refrigeration system containing either R-22 or R-410A, the refrigerant must be:
Replaced with R-32
Recovered
Vented
Destroyed
What should a technician do if they lose their section 608 certifcation card.
Request a replacement from the EPA.
Request a replacement from the certifying organization.
Remain silent so as not to tell anyone they are out of compliance with that requirement.
Have your friend vouch for you.
State and local governments may;
not establish any laws related to refrigerants.
establish laws that are not as strict as the Clean Air Act/EPA regulations
establish laws that contain stricter requirements than the Clean Air Act/EPA regulations
establish laws that exempt refrigerants from the Clean Air Act.
What does a section 608 certification allow a technician to do?
Import R-22 from overseas.
Purchase or handle controlled refrigerants
Service motor vehicle air conditioners
Perform any type of work on any type of HVAC/R equipment
How does cooling occur in direct expansion vapor compression refrigeration systems?
When the refrigerant vapor turns into a liquid.
When the refrigerant is under maximum pressure.
When the liquid refrigerant is vaporized.
When the refrigerant gives off heat
Which of the following refrigerants is very high pressure and generally does NOT need to be recovered?
R-22
R-134a
R-404 A
R-744
From which of the following does the ozone layer protect the earth?
Nuclear radiation from the Van Allen belt.
Gamma radiation form the sun.
Ultraviolet radiation from the sun.
Infrared radiation from the sun.
