Type I Flashcards
Recovery equipment manufactured after November 15,1993 that is used during the maintenance, service or repair of small appliances must be certified by _________.
An EPA-approved third party
Recovery devices for use with small appliances must be capable of recovering 80% of the refrigerant whether or not the compressor operating or achieving a 4 inch vacuum under conditions of ARI 740 if they were manufactured before ________.
November 15, 1993
- equipment manufactured AFTER Nov. 15, 1993 must be certified to recover 90% of refrigerant when the compressor is operational or 80% if the compressor is inoperative.
Fittings that are used to connect the recovery device to an appliance and which can be manually closed or which close automatically when disconnected to prevent loss of refrigerant from hoses are called ________.
Low-loss fittings
When checking for non-condensables in a recovery cylinder the technician should ________ before taking a pressure reading.
Allow the temperature of the cylinder to stabilize to room temperature
- comparisons to a pressure temperature chart are only valid if both the pressure and temperature of the refrigerant are stable and known.
Refillable cylinders are regulated in their design, fabrication and testing by _______ for use in the transportation of the refrigerants.
DOT
- DOT has regulatory authority over all hazardous materials in commercial transportation.
Capturing and ultimately eliminating the use of chlorofluorocarbons is being done in the United States to stop damage to _________.
The stratospheric ozone layer
State and local governments may establish laws that contain regulations that are ________ in comparison to Clean Air Act/EPA regulations.
Stricter
The Clean Air Act _________.
- Calls for the phaseout of CFC/HCFC production
- prohibits CFC/HCFC venting as of July 1, 1992
- requires the EPA to set standards for equipment and technicians
You must always recover refrigerant before you dispose of any appliance containing _______ refrigerant.
- CFC
- HCFC
- HFC
All persons opening appliances for maintenance, service or repair must have at least one piece of certified, self-contained recovery equipment available at their place of business. The only exception is for ______.
- small appliances
Recovery cylinders can be identified by ________.
- yellow tops and gray bodies
Reusable refrigerant cylinders must be re-tested _______.
Five-year intervals
You should always get an accurate pressure reading of the refrigerant in a recovery cylinder because the pressure reading can indicate if there is _______ in the cylinder.
Excessive air or other non-condensables.
Individuals servicing and disposing of air conditioning and refrigeration equipment are prohibited from _________.
Knowingly venting refrigerant into the atmosphere
- this became effective as of July 1, 1992
It has been illegal to vent HFC refrigerants since ______.
November 15, 1995
The EPA is authorized to assess fines of up to _______ per day per violation for any violation of the Clean Air Act.
$32,500
_______ means to clean refrigerant for reuse by oil separation and single or multiple passes through devices, such as replaceable core filter-dryers which reduce moisture, acidity and particulate matter.
Recycling
- recycling, by definition means, to extract refrigerant from an appliance and to clean refrigerant for reuse without meeting all the requirements for reclamation.
_______ requires chemical analysis of the refrigerant to verify that the ARI 700 Purity Specifications are met.
Reclamation
-reclamation means to reprocess refrigerant to at least the purity specified by the ARI standard 700.
______ means to remove refrigerant in any condition from a system and store it in an external container without necessarily testing or processing it in any way.
Recovery
Used disposable refrigerant cylinders can be _______.
Recycled with other scrap metal after they are emptied and rendered useless.
Which of the following items does DOT regulation 49 CFR require to be recorded on the shipping paper for hazard class 2.2, Nonflammable Compressed Gases:
Number of cylinders of each gas
Portable refillable containers must meet ______ requirements and standards.
DOT
- in addition to disposable and returnable cylinders, refillables are also regulated in their design and fabrication and testing by the DOT for use in transportation of refrigerants.
Approved refillables tanks should never be filled to more than ______ of their total capacity.
80%
The ozone layer absorbs and scatters _______ light from the sun, which prevents harmful amounts from reaching the earth.
Ultraviolet
Which refrigerant should not be recovered with current recovery devices?
- sulfur dioxide, methyl chloride and methyl formate, which are refrigerants used in some refrigerators built before 1950.
- ammonia, hydrogen and water which may be present in refrigerators used in small appliances in campers or other recreational vehicles.
