EPA Type I Flashcards
(25 cards)
A small appliance is defined as a system that is _____________.
A. Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less.
B. Manufactured fully charged and her medically sealed in a factory with a charge of 15 pounds or less.
C. An appliance with a compressor under 1/3 hp.
D. Any assembly of pre-charged components with a charge of less than 2 pounds per component.
A. Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less.
____________ is an approved refrigerant for new household refrigerators, freezers, and combination refrigeration/freezers
A. R–600a
B. R-1234yf
C. R-1234zd
D. R-1234ze(E)
A. R-600a
The hydrocarbon refrigerant approved for retrofit into existing household refrigerators is ____________.
A. R-600a if charge is less than 1 ounce
B. R-290 if charge is less than 2 ounces
C. Any hydrocarbon if the charge is less than 1 ounce.
D. None. Hydrocarbons are not approved for any retrofit applications.
D. None. Hydrocarbons are not approved for any retrofit applications.
Recovery devices for use with small appliances must be capable of _________.
A. Recovering 90% of the refrigerant when the compressor is operating.
B. Recovering 90% of the refrigerant when the compressor is not operating.
C. Achieving a 10 inch vacuum under the conditions of AHRI 740.
D. Recovering 70% of the refrigerant when the compressor is not in operation.
A. Recovering 90% of the refrigerant when the compressor is operating.
Recovery equipment is certified by ____________.
A. An ASHRAE approved laboratory
B. An EPA approved laboratory.
C. A SNAP approved laboratory.
D. Any of the above three organizations can approve the testing laboratory.
B. An EPA approved laboratory
When recovering refrigerant from small appliances, you must recover ___________.
A. At least 85% of the refrigerant.
B. At least 90% of the refrigerant with an inoperative compressor and 80% of the refrigerant with an operative compressor
C. At least 80% of the refrigerant within an inoperative compressor and 90% of the refrigerant with an operative compressor.
D. All of the refrigerant down to a vacuum of 500 microns
C. At least 80% of the refrigerant with an inoperative compressor and 90% of the refrigerant with an operative compressor.
The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerant is ___________.
A. Banned
B. Banned unless you have an approved recovery machine.
C. Restricted to use in new units
D. Restricted to technicians who are EPA certified in refrigerant recovery.
D. Restricted to technicians who are EPA certified in refrigerant recovery. 
A process stub is a ___________.
A. Straight piece of tubing that is entered using a piercing access valve.
B. Line located at least 3 inches below the compressor
C. Service valve installed at the factory.
D. Stub to allow additional compressors to be connected in parallel.
A. Straight piece of tubing that is entered using a piercing access valve.
Small appliance servicing requires a _________ or universal certification
A. Type I
B. Type II
C. Type III
D. Type I or II
A. Type I
If a recovery cylinder is suspected to be contaminated, measure the ____________.
A. Pressure of the refrigerant in the cylinder.
B. Weight of the cylinder.
C. Weight of the cylinder and subtract the empty cylinder weight to get the refrigerant weight.
D. Both A and C.
A. Pressure of the refrigerant int he cylinder
You must know the ____________ before beginning a refrigerant recovery
A. Actual charge in the system.
B. Type of refrigerant that is in the system.
C. Noncondensible concentration.
D. Oil type.
B. Type of refrigerant that is in the system.
When installing an access fitting, ____________.
A. It is not necessary to leak test the access fitting, because the recovery will be fast.
B. The fitting should be verified as leak free before beginning any recovery to avoid drawing air into the recovery tank.
C. The fitting should be leak tested before the system is recharged.
D. The fitting should be leak tested after the system is recharged.
B. The fitting should be verified as leak free before beginning any recovery to avoid drawing air into the recovery tank.
A passive system dependent recovery process _________.
A. Uses a pump to recover refrigerant
B. Uses a non-pressurized container.
C. Can only be performed on a system with an operating compressor.
D. Can only be performed on a system with an inoperable compressor.
B. Uses a non-pressurized container.
When recovering refrigerant using a passive recovery system, and the system has an in operative compressor, it is ___________.
A. Helpful to heat and strike the compressor with a rubber mallet to release any refrigerant trapped in and under the compressor oil.
B. Only necessary to recover the refrigerant that will naturally flow out of the system.
C. Only necessary to recover the refrigerant that will naturally flow out of the system when the compressor is heated to 100°F.
D. Necessary to blow the system oil into the recovery tank with pressurized nitrogen.
A. Helpful to heat and strike the compressor with a rubber mallet to release any refrigerant trapped in and under the compressor oil.
What requires accessing both the high and low side of the system for refrigerant recovery when using a passive recovery process?
A. When the system leak.
B. When the compressor oil is contaminated.
C. When the refrigerant contains noncondensible gases.
D. When the compressor does not run.
D. When the compressor does not run.
What is the pressure of a storage cylinder of R-134a, that is stored in a room where the temperature is 100°F?
A. 37 psig
B. 84 psig
C. 124 psig
D. 207 psig
C. 124 psig
Recovery of refrigerant cannot begin if the initial pressure in the system is ________.
A. Above 800 psig
B. Above 550 psig
C. Above 30 psig
D. 0 psig
D. 0 psig
Which maintenance practice should be performed on a regular basis?
A. Change the vacuum pump oil.
B. Check the recovery equipment for leaks.
C. Check the manifold hose set for leaks.
D. All of the above.
D. All of the above.
Which refrigerant can be mixed in a system?
A. R-22 and r-407c
B. R-22 and R-410a
C. R-407c and R-410a
D. Refrigerants cannot be mixed.
D. Refrigerants cannot be mixed.
Which of the following is required by the EPA when attaching a gauge set?
A. A red colored high-pressure hose and a blue colored low pressure hose.
B. Self seal valves on the ends of the gauge set hoses to minimize any release of refrigerant.
C. Manual hand valves on the ends of the gauge set hoses to minimize any release of refrigerant.
D. Either B or C.
D. Either B or C
Always look for oil contamination when recovering refrigerant because __________.
A. Contaminated oil is hard to remove from the refrigerant.
B. contaminated oil indicates the system will need to be flushed
C. Contaminates destroy recovery tanks.
D. If the refrigerant is contaminated, it does not need to be recovered.
B. Contaminated oil indicates the system will need to be flushed
Nitrogen tank should always be equipped with a ________.
A. Pressure regulator.
B. Pressure relief valve downstream of the regulator.
C. Float switch.
D. Both A and B.
D. Both A and B.
CFC and HCFC refrigerant can decompose to form __________.
A. Boric acid.
B. Sulfuric acid.
C. Hydrochloric and hydrochloric acids
D. Phosphoric acid.
C. Hydrochloric and hydrochloric acids
At high temperatures, CFC and HCFC refrigerant can decompose into ___________.
A. Hydrazine gas
B. Phosgene gas.
C. Hydrogen gas.
D. Chlorine gas.
B. Phosgene gas
