608 manual

The flashcards below were created by user Anonymous on FreezingBlue Flashcards.

  1. Appliance
    any device that contains and uses a refrigerant for household or commercial purposes, including any air conditioner, refrigerator, chiller, or freezer.  EPA interprets this definition to include all air-conditioning and refrigeration equipment except units designed and used exclusively for military purposes.
  2. Asphyxia
    the displacement of the oxygen in a room by the denser refrigerant.
  3. Azeotrope
    a blend of two or more components whose equilibrium vapor phase and liquid phase compositions are the same at a given pressure. These refrigerants are given a 500-series ASHRAE designation and behave like a single refrigerant.  They can be charged as a liquid or vapor.
  4. High-pressure appliance
    an appliance that uses a refrigerant with a liquid phase saturation pressure between 170 psia and 355 psia at 104°F. This definition includes but is not limited to appliances using R-401A, R-409A, R-401B, R-411A, R-22, R-411B, R-502, R-402B, R-408A, R-410A, and R-402A.
  5. Low-Loss Fitting
    any device that is intended to establish a connection between hoses, appliances, or recovery/recycling machines, and that is designed to close automatically or to be closed manually when disconnected to minimize the release of refrigerant from hoses, appliances, and recovery or recycling machines.
  6. Low-pressure appliance
    an appliance that uses a refrigerant with a liquid phase saturation pressure below 45 psia at 104°F. This definition includes but is not limited to appliances using R-11, R-123, and R-113.
  7. Major Maintenance, Service, or Repair
    a service or repair that involves removal of the compressor, condenser, evaporator, or auxiliary heat exchanger coil.
  8. Motor Vehicle Air Conditioner (MVAC) -
    Mechanical vapor compression refrigeration equipment used to cool the driver or passenger compartment of any motor vehicle.  This definition is NOT intended to encompass the hermetically sealed refrigeration system used on motor vehicles for refrigerated cargo or the air conditioning systems on passenger buses.Section 609 certification is required for working on MVAC systems while either Section 608 Type II or Section 609 certification is required for MVAC-like A/C systems (e.g., farm equipment and other non-roads vehicles). Section 608 certification is required for working on hermetically sealed refrigeration systems used on motor vehicles for refrigerated cargo or the air conditioning systems on passenger buses. Due to the similarities between MVAC and MVAC-like appliances, EPA recommends that technicians servicing MVAC-like appliances consider certification under Section 609. Note that buses using CFC-12 or HFC-134a to cool the driver are MVACs. However, buses using HCFC-22 are not MVACs or MVAC-like appliances, but rather high-pressure equipment covered under by Section 608 certification.  Therefore, if you service both the driver AC system (MVAC) and the passenger AC system, both a 609 MVAC and a 608 certification are required.  Likewise, if you service the AC system for the cab of a truck (MVAC) as well as the refrigerated cargo container then again, you need both 609 MVAC and 608 certifications.
  9. MVAC-Like Appliances
    mechanical vapor compression, open-drive compressor appliances used to cool the driver or passenger compartments of a non-road vehicle, including agricultural and construction vehicles. This definition excludes appliances using HCFC-22 refrigerant or their substitutes, such as R-410A or R-407.The regulations implementing sections 609 and 608 treat MVACs and MVAC-like appliances (and persons servicing them) slightly differently. A key difference is that persons who service MVACs are subject to the Section 609 equipment and technician certification requirements only if they perform “service for consideration,” while persons who service MVAC-like appliances are subject to the equipment and technician certification requirements set forth in the Section 608 and 609 regulations regardless of whether they are compensated for their work.Another difference is that persons servicing MVAC-like appliances have the option of becoming certified as Section 608 Type II technicians instead of becoming certified as Section 609 MVAC technicians under subpart B. Persons servicing MVACs do not have this choice. They must be certified as Section 609 MVAC technicians if they perform the AC service for compensation.
  10. Non-Azeotropic Refrigerant
    a synonym for zeotropic, which is the preferred term though less commonly used as a descriptor.  Zeotropic refers to blends comprising multiple components of different volatilities that, when used in refrigeration cycles, change volumetric composition and saturation temperatures (exhibit temperature glide) as they evaporate (boil) or condense at constant pressure. These refrigerants are given a 400-series ASHRAE designation.
  11. Non-condensables
    gases that will not condense anywhere in the vapor compression system and typically accumulate in the condenser.
  12. Normal Charge
    the quantity of refrigerant within the appliance or appliance component when the appliance is operating with a full charge of refrigerant.
  13. Opening an Appliance
    any service, maintenance, or repair on an appliance that could be reasonably expected to release refrigerant from the appliance to the atmosphere unless the refrigerant was previously recovered from the appliance
  14. Process Stub
    a length of tubing that provides access to the refrigerant inside a small appliance or room air conditioner that can be resealed at the conclusion of repair or service.
  15. Reclamation
    to reprocess refrigerant to new product specifications or at least to the purity specified in the ARI Standard 700, Specifications for Fluorocarbon Refrigerants, and to verify this purity using the analytical test procedures described in the standard.
  16. Recovery
    to remove refrigerant in any condition from an appliance and to store it in an external container without necessarily testing or processing it in any way.
  17. Recycling
    to extract refrigerant from an appliance and to clean refrigerant for reuse without meeting all of the requirements for reclamation.  In general, recycled refrigerant is refrigerant that is cleaned using oil separation and single or multiple passes through devices such as replaceable core filter driers, which reduce moisture, acidity, and particulate matter.
  18. Refrigerant
    the fluid used for heat transfer in a refrigeration system, which absorbs heat during evaporation at low temperature and pressure, and releases heat during condensation at a higher temperature and pressure.
  19. Self-Contained Recovery
    recovery or recycling equipment that is capable of removing refrigerant from an appliance without the assistance of components contained in the appliance.
  20. Small Appliance
    any of the following products that are fully manufactured, charged, and hermetically sealed in a factory with five pounds or less of refrigerant: refrigerators and freezers designed for home use, room air conditioners (including window air conditioners and packaged terminal air conditioners), packaged terminal heat pumps, dehumidifiers, under-the-counter ice makers, vending machines, and drinking water coolers.
  21. Substitute
    any chemical or product substitute, whether existing or new, used by any person as a replacement for a class I or II compound in a given end-use.
  22. System-Dependent Recovery
    recovery that requires the assistance of components contained in an appliance to remove the refrigerant from the appliance.
  23. Technician
    any person who performs maintenance, service, or repair that could reasonably be expected to release refrigerant into the atmosphere, including but not limited to installers, contractor employees, in-house service personnel, and, in some cases, owners.  Technician also means any person disposing of appliances except for small appliances.
  24. Vacuum pump
    the device used to pump the air, moisture, and other non-condensables out of a system and, hence, evacuate the system,  The extraction of the air and non-condensables lowers the pressure inside of the system (below atmospheric pressure), which causes any trapped liquid water to evaporate and be exhausted by the vacuum pump.  Single-stage and two-stage vacuum pumps are commonly used in the HVAC/R industry.  A two-stage vacuum pump is necessary to pull the deep vacuums (below 500 microns), which are necessary for the proper evacuation and removal of water in systems.    Both the single-stage and two-stage vacuum pumps are rated by their volumetric capacity, typically expressed in cubic feet per minute (cfm). Three to six cfm pumps are typically used in residential applications.
  25. Very high-pressure appliance
    an appliance that uses a refrigerant with a critical temperature below 104°F or with a liquid phase saturation pressure above 355 psia at 104°F. This definition includes but is not limited to appliances using R-13 or R-503. Very high-pressure refrigerants include R-13, R-23, and R-503.
Card Set:
608 manual
2013-07-08 00:39:06

Show Answers: