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Epa universal SkillCat exam questions with answers
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As technicians we must stay up to date on - CORRECT ANSWERS ✔✔Federal state and local law For universal certification you will receive how many questions - CORRECT ANSWERS ✔✔ 100 What is passing grade for all epa certifications - CORRECT ANSWERS ✔✔70% True or false you must memorize all regulations because they will stay the same forever - CORRECT ANSWERS ✔✔False Can chlorine from the environment come from natural resources such as volcanoes - CORRECT ANSWERS ✔✔Yes but they are not the primary source True or false Ground level ozone is is what reflects and absorbs harmful uv rays from the sun - CORRECT ANSWERS ✔✔False
In which way does ozone depletion affect humans - CORRECT ANSWERS ✔✔Increased risk of skin cancer and cataracts Is there evidence that refrigerants are in the stratosphere - CORRECT ANSWERS ✔✔Yes One molecule of chlorine can destroy how many molecules of ozone - CORRECT ANSWERS ✔✔100, Ozone has ____ oxygen atoms. - CORRECT ANSWERS ✔✔ 3 True or false the majority of the ozone is located in the troposphere - CORRECT ANSWERS ✔✔False How many molecules of ozone can three molecules of chlorine destroy
Equipment has to be certified to epa standards in order to recover which refrigerants - CORRECT ANSWERS ✔✔Cfc hcfc hfc If you are selling r 22 refrigerant who can you sell to - CORRECT ANSWERS ✔✔A technician or business with an epa 608 If you recover r 22 can you use the recovered refrigerant in another device owned by a different person - CORRECT ANSWERS ✔✔Yes but only if it is reclaimed and meets ahri 700 standards In the United States when we're all CFCs phased out - CORRECT ANSWERS ✔✔ 1995 In the United States when we're r22 r124b phased out - CORRECT ANSWERS ✔✔ 2020 In the United States when will all HCFCS be phased out - CORRECT ANSWERS ✔✔ 2030 What records should be kept for r22 - CORRECT ANSWERS ✔✔Type of refrigerant, dates and quantity of refrigerant Section 608 of EPA Clean Air Act is - CORRECT ANSWERS ✔✔Federal law
State and local regulations - CORRECT ANSWERS ✔✔Have to be followed with federal law and may be stricter The venting prohibition requires that you recover affected refrigerant before - CORRECT ANSWERS ✔✔Opening, servicing, disposing equipment Under section 608 regulations who is responsible for ensuring that all refrigerant is removed before disposing of equipment that contains refrigerant - CORRECT ANSWERS ✔✔final person in the disposal chain What appliances do section 608 regulations apply to - CORRECT ANSWERS ✔✔Freezers What does snap stand for - CORRECT ANSWERS ✔✔Significant New Alternatives Policy What is the fine for violating the clean air act - CORRECT ANSWERS ✔✔44539 per day per violation What is the Montreal Protocol? - CORRECT ANSWERS ✔✔An international agreement between 197 countries
Example of refrigerant excluded from section 608 refrigerant management requirements - CORRECT ANSWERS ✔✔Water, nitrogen, carbon dioxide Examples of violation of the CAA venting prohibition - CORRECT ANSWERS ✔✔Release of refrigerants because appliances were not recovered and refrigerants release when disconnecting non low loss fittings What does section 608 regulations apply to - CORRECT ANSWERS ✔✔CFC,HCFC,HFC Example of refrigerant that you don't need section 608 to purchase - CORRECT ANSWERS ✔✔Nitrogen Examples of CFC - CORRECT ANSWERS ✔✔R11,r Refrigerant Example of HCFC - CORRECT ANSWERS ✔✔R Refrigerant examples the venting prohibition cover - CORRECT ANSWERS ✔✔CFC,HCFC,HFC Which organization can test your recovery equipment used to service a system with r12 - CORRECT ANSWERS ✔✔UL, AHRI
Who does not need to maintain proper records of refrigerant - CORRECT ANSWERS ✔✔The epa You must have a section 608 certification in order to purchase - CORRECT ANSWERS ✔✔CFC, HCFC, HFC true of false Equipment that uses nitrogen as a refrigerant is not subject to section 608 - CORRECT ANSWERS ✔✔True After the evaporator which component does the refrigerant go to next
When the refrigerant enters the compressor what state is it in - CORRECT ANSWERS ✔✔Super heated vapor When refrigerant enters the evaporator what state is it in - CORRECT ANSWERS ✔✔Liquid When refrigerant exits the evaporator what state is it in - CORRECT ANSWERS ✔✔Low pressure Vapor Which components are on the high pressure side - CORRECT ANSWERS ✔✔Compressor, condenser What components change the refrigerants pressure - CORRECT ANSWERS ✔✔Compressor, metering device What state has the highest temperature solid liquid water vapor - CORRECT ANSWERS ✔✔Vapor True or false molecules in a vapor state is faster than a liquid state - CORRECT ANSWERS ✔✔True If we decrease the pressure of a substance it's boiling point decreases - CORRECT ANSWERS ✔✔True
In the condenser the refrigerant changes state - CORRECT ANSWERS ✔✔True True or false The boiling point for most refrigerants is 212fheight - CORRECT ANSWERS ✔✔False True or false The vapor leaving the compressor is lower in pressure than vapor entering the compressor - CORRECT ANSWERS ✔✔False Your air conditioning works by adding cold air into your house - CORRECT ANSWERS ✔✔False What is fractionation - CORRECT ANSWERS ✔✔When refrigerant settles into layers happens in vapor phase Temperature glide is - CORRECT ANSWERS ✔✔The difference between the bubble and dew point The bubble point is - CORRECT ANSWERS ✔✔The temperature that the first refrigerant in a blend turns into vapor The dew point is - CORRECT ANSWERS ✔✔The temperature that the first refrigerant in a blend turns to liquid
True or false Refrigerant blends take on the ashrae number of the main refrigerant blend - CORRECT ANSWERS ✔✔False true or false Technicians can make their own epa approved refrigerant blends - CORRECT ANSWERS ✔✔False True or False there are no drop in replacements for r22 - CORRECT ANSWERS ✔✔True True or False there are no replacements for r22 refrigerant - CORRECT ANSWERS ✔✔False Alkylbenzene (AB) oil is used for systems with which of the following refrigerants - CORRECT ANSWERS ✔✔HCFC, HCFC blends Hygroscopic oils - CORRECT ANSWERS ✔✔Absorb moisture readily If we are retrofitting a system to use r134a which oil do you need to use - CORRECT ANSWERS ✔✔Polyester POE True or false R1234yf is not miscible in any refrigerant oils - CORRECT ANSWERS ✔✔False
True or false Alkylbenzene (AB oil) is miscible in HCFC refrigerant - CORRECT ANSWERS ✔✔True True or false An ideal oil is best at handling high temperatures and high pressures - CORRECT ANSWERS ✔✔False True or false an Ideal oil is readily miscible with the refrigerant in the system - CORRECT ANSWERS ✔✔True True or false As long as an oil is not flammable at the starting and ending temperature it can be used because the system is contained - CORRECT ANSWERS ✔✔False True or false Hydrolysis is when refrigerant oil breaks in the presence of water - CORRECT ANSWERS ✔✔True True or false Polyester oils are great because they can mix with a lot of other oils - CORRECT ANSWERS ✔✔False What are the most common ways leaks can occur - CORRECT ANSWERS ✔✔Wear and tear, poor initial construction Common leak locations are - CORRECT ANSWERS ✔✔Coils, valve connections, pipe connections
If a household freezer contains r22 we can retrofit it to operate on - CORRECT ANSWERS ✔✔R410a If we find refrigerant that is mixed what must we do - CORRECT ANSWERS ✔✔Send it to a certified reclaiming facility to try to reclaim it If we use nitrogen to pressurize a system or blow debris out we can - CORRECT ANSWERS ✔✔Vent the nitrogen Isobutane is - CORRECT ANSWERS ✔✔An acceptable substitute for all new household refrigerators and freezers New household refrigerators and freezers can be factory charged with
Which refrigerants can be vented - CORRECT ANSWERS ✔✔R ammonia r744 carbon dioxide r28 nitrogen True or false Do you expect to see r22 listed as an acceptance substitute under the snap program - CORRECT ANSWERS ✔✔False the purpose of snap is to replace harmful refrigerants True or false for r22 there are no drop in substitutes - CORRECT ANSWERS ✔✔True How many ounces are in a pound? - CORRECT ANSWERS ✔✔16 ounces True or false if we have two HFC refrigerants we can use the same recovery cylinder because they are the same type of refrigerant - CORRECT ANSWERS ✔✔False True of false Nitrogen can be used to pressurize or blow debris out of a system containing a half charge of refrigerant - CORRECT ANSWERS ✔✔False True or False only refrigerant blends without HFCs are accepted under the snap program - CORRECT ANSWERS ✔✔False
If the compressor is not working and we are performing passive recovery we need to - CORRECT ANSWERS ✔✔Release trapped refrigerant from the compressor oil If the pressure of a system is found at 0psi can we recover refrigerant from the system - CORRECT ANSWERS ✔✔No True or false if pressure reading are far apart are there contaminants in the refrigerant - CORRECT ANSWERS ✔✔True Solderless piercing valves tend to - CORRECT ANSWERS ✔✔Leak over time and should not be left on an appliance after service System dependent recovery - CORRECT ANSWERS ✔✔Is passive uses the compressor and can be used for appliances with under 15 lbs of refrigerant We can use a known refrigerants PT chart to see if there's non condensables in the refrigerant - CORRECT ANSWERS ✔✔Only true if we can measure both pressure and temperature When performing active recovery and the compressor is working we must recover what levels - CORRECT ANSWERS ✔✔90% or 4 inch vacuum
What method of monitoring fill levels is most effective - CORRECT ANSWERS ✔✔Gross cylinder weight A recovery machine is required for appliances with _ lbs or more of refrigerant - CORRECT ANSWERS ✔✔15 lbs If the oil is contaminated what do we do - CORRECT ANSWERS ✔✔Flush the system Non-condensables would _ the pressure on the high side of an active recovery device - CORRECT ANSWERS ✔✔Increase Recovery devices are tested and certified by - CORRECT ANSWERS ✔✔AHRI UL Vacuum pumps can be used to - CORRECT ANSWERS ✔✔Remove air and non condensables What are signs of contamination - CORRECT ANSWERS ✔✔Discolored oil acidic smell What does the process stud look like in small appliances - CORRECT ANSWERS ✔✔A straight piece of tubing