Section 608 technician certification is required to dispose of appliances, except for small appliances (an appliance that is fully manufactured, charged, and hermetically sealed in a factory with five pounds or less of refrigerant), motor vehicle air conditioners (MVACs), or MVAC-like appliances.
What refrigerants are HFO?
HFO refrigerants are composed of hydrogen, fluorine and carbon atoms but contain at least one double bond between the carbon atoms. The first HFO, jointly developed by DuPont and Honeywell, is HFO 1234yf which is sold under the brand names Opteon YF and SOLSTICE yf.
Which refrigerants are banned?
USA: The US EPA is to ban a host of high GWP refrigerants including R404A, R134a, R407C and R410A in certain new products from as early as January 1, 2021.
Is R1234ze an HFO?
The R1234ze refrigerant is a HFO refrigerant with a very low GWP (7). … Air-cooled chillers using R1234ze refrigerant are usually bigger in size than those using R134a, even if they provide the same exact cooling capacity.
What is the difference between EPA 608 and 609?
Section 608 technician certification is required to purchase ozone depleting or non-exempt substitute refrigerants, such as HFC refrigerants. Section 609 technician certification is required to purchase CFC-12 or EPA-approved substitutes for MVACs containing an ODS.
What refrigerant is very high pressure and does not need to be recovered?
Co2 refrigerant R-744 (Carbon dioxide) is a very high-pressure refrigerant and generally does not need to be recovered.
Which refrigerants must be recovered before opening?
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the following in common? They must be recovered before opening or disposing of appliances. After 1995, supplies of CFC refrigerant for equipment servicing will come from; recovery and recycling.
What are A2L refrigerants?
What are A2L refrigerants? A2L refrigerants are a class of refrigerants that have lower toxicity and flammability than A2 or A3 refrigerants. All common refrigerants are listed through the American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) in ASHRAE Standard 34 (2019).
Which refrigerant has lowest global warming potential?
The refrigerant with the lowest GWP (Global Warming Potential) is R-717. There are many other low-GWP refrigerants out there, meaning you as an HVAC professional should have no trouble finding one right for the applications you deal with.
Which oil is used with most HFC refrigeration applications?
Polyolester (POE) – the primarily synthetic oil for refrigeration systems using HFC refrigerants.
Why is it important to not mix different refrigerants in the same container when recovering refrigerant?
It is important not to mix different refrigerants in the same container because: the mixture may be impossible to reclaim.
Why can technicians only charge used CFC HCFC or HFC refrigerant back into the evacuated appliance?
Answer: Technicians can only charge used CFC, HCFC, or HFC refrigerants back into the same appliance or into another appliance owned by the same owner. … To make it easier to recover refrigerant, EPA regulations require appliances that do not have service valves to have a service aperture or process stub.
What is a ternary blend refrigerant?
A ternary blend of refrigerants composed of HCFC-22, HCFC-142b (chlorodifluoroethane), and a small amount of isobutane, has been used as a drop in substitute for CFC-12 and R-500 refrigerants.
What is the maximum allowable factory charge of refrigerant?
A domestic refrigerator is an example of an appliance on which it would be permissible to use a passive recovery device. System-dependent or passive recovery equipment use for an appliance containing HCFCs or HFCs is limited to a maximum charge of 15 pounds.
Which condition requires accessing both the high and low side of the system for refrigerant recovery?
using the system dependent (passive) recovery process, which condition requires accessing both the high and low side of the system for refrigerant recovery? it is necessary to heat the compressor and strike it with a rubber mallet.
Which refrigerants can be mixed?
The most commonly mixed refrigerants in the field are the replacements for R-22 — R-427A, R-438A, R-422D, and R-407C — which are often combined with the remaining R-22 in the system, said Maiorana.
What is a section 609 certification?
Section 609 of the Federal Clean Air Act requires technicians who service motor vehicle air conditioning “MVAC” systems to be certified. The Section 609 Motor Vehicle Air Conditioning Exam, an open book test, is: … Required to service motor vehicle A/C systems.
What is EPA Type 1 certification?
Available online in an open-book format, the Type 1 EPA 608 certification enables you to service smaller appliances. This section includes proper recovery techniques and industry requirements for small appliances, including recovery in equipment made before and after November 15, 1993.
What is the EPA 609 Certification?
Any person who repairs or services a motor vehicle air conditioning (MVAC) system for consideration (payment or bartering) must be properly trained and certified under section 609 of the Clean Air Act by an EPA-approved program.
What is HFO blend?
Hydrofluoroolefins (HFOs) are unsaturated organic compounds composed of hydrogen, fluorine and carbon. … HFO refrigerants are categorized as having zero ozone depletion potential (ODP) and low global warming potential (GWP) and so offer a more environmentally friendly alternative to CFC, HCFC, and HFC refrigerants.
Is R32 a HFO?
R32 falls into the “lower flammability” or Class 2L “mildly flammable” category. … These include HFC 32 (or R32), HFO 1234yf and HFO blends, Ammonia (R717), Propane (R290) and C02 (R744).
Is R454B a HFC?
R454B (Opteon™ XL41) is a low GWP hydrofluoro-olefin (HFO) based refrigerant replacement for R410A in new equipment.