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What this collection covers
Selected Core and Type I/II/III written-knowledge foundations.
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Author-reviewed learning materials. Independent educator review is pending; question difficulty has not been calibrated with learner results. Check coverage and gaps before planning your preparation.
Sample flashcards, with answers
CARD 01 · Core
A technician will service a factory-sealed household freezer containing 4 lb of refrigerant. Which certification category directly covers this small appliance?
Answer & explanation
Type I. Classify the appliance before selecting a certification.
A high-pressure stationary appliance has a full charge of 50 lb. Recovery equipment was manufactured after November 15, 1993. In EPA's general service evacuation table, which target applies?
Answer & explanation
0 inches Hg vacuum. The appliance is high-pressure and its full charge is less than 200 lb.
Recovered refrigerant from one supermarket rack is proposed for another rack owned by the same company. Which ownership fact supports reuse without mandatory ownership-transfer reclamation?
Answer & explanation
Both appliances have the same owner. Recovered refrigerant may be returned to equipment under the same ownership; transfer to another owner requires reclamation by an EPA-certified reclaimer..
A qualifying small appliance initially contains 2 lb. Recovery equipment was manufactured before November 15, 1993, and the appliance compressor is functional. Using the percentage method, what minimum mass must be recovered?
Answer & explanation
1.6 lb. The applicable recovery fraction is 80%; multiply 2 lb by 80/100.
An appliance normally contains 100 lb of ozone-depleting refrigerant and is used for comfort cooling. Which annual trigger rate belongs to that category?
Answer & explanation
10%. The stated ODS appliance contains 100 lb, so it meets the 50 lb size condition.
A low-pressure appliance qualifies for the limited non-major repair exception. What pressure condition is stated before opening?
Answer & explanation
Pressurize it to 0 psig. For the limited non-major low-pressure repair exception not followed by evacuation to the environment, pressurize to 0 psig before opening; prohibited subsequent-purge methods are not generally allowed..
A certified technician is asked where EPA requires certification evidence to be kept. Which answer fits?
Answer & explanation
At the place of business. Technicians keep certification evidence at the business through three years after ceasing technician operations; EPA does not generally require carrying the card at every service call..
A scrap processor receives a refrigerator still containing refrigerant. What must occur before final disposal?
Answer & explanation
Refrigerant recovery under the applicable requirements. The final person in the disposal chain must ensure refrigerant recovery before final disposal; a documented prior recovery can satisfy the chain requirement..
A stated non-major high-pressure repair will not be followed by evacuation to the environment. What pressure is required before opening under this limited exception?
Answer & explanation
0 psig. The limited exception for a non-major repair not followed by evacuation to the environment requires high- or very-high-pressure equipment to reach 0 psig before opening..
An applicable ODS chiller is recharged after service. Which quantity belongs on the customer's service documentation?
Answer & explanation
The amount of refrigerant added. For covered large ODS appliances, the customer receives refrigerant-added records and required inspection/verification documentation with dates, methods, locations andresults..
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Sources and preparation route
These prompts and explanations are the site's original learning materials. The reference links below support the selected skills; they are not endorsements or official examination questions.
