Table of Contents
- 1 Do all refrigerants need to be recovered?
- 2 What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level?
- 3 Who must certify recovery equipment?
- 4 When recovering refrigerant from small appliances you must recover?
- 5 What are the standards for recovery equipment manufactured before November 15 1993?
- 6 What standard must be met when a refrigerant is reclaimed?
- 7 When using recovery equipment manufactured after 1993 it must be able to recover _% of the refrigerant when compressor is functioning?
- 8 For which of the following refrigeration systems appliances would it be permissible?
- 9 When do you turn off a liquid recovery machine?
- 10 Can You recover refrigerant from an old refrigerator?
Do all refrigerants need to be recovered?
EPA regulations (40 CFR Part 82, Subpart F) under Section 608 of the Clean Air Act require that refrigerant recovery and recycling equipment be tested to ensure it meets EPA requirements. 80 percent of the refrigerant in the small appliance when the compressor is not functional.
What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level?
What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level? A system with a large leak and internal pressure of 0 psig.
When using recovery equipment manufactured before November 15 1993 you must evacuate a low pressure chiller to what level before making a major repair?
For high- or very high-pressure appliances, the equipment must be evacuated to 0 psig before it is opened. For low-pressure appliances, the equipment must be pressurized to 0 psig before it is opened. Methods that require subsequent purging (e.g., nitrogen) cannot be used except with appliances containing R-113.
Who must certify recovery equipment?
EPA
Section 608 of the Clean Air Act requires all refrigerant recovery equipment be certified by an EPA-approved testing organization to assure that the equipment meets EPA standards based on the test method established by AHRI Standard 740.
When recovering refrigerant from small appliances you must recover?
Technicians repairing small appliances must recover 90% of the refrigerant if using evacuation equipment manufactured on or after November 15, 1993, and the compressor in the appliance is operating.
Who must certify recovery equipment used during maintenance?
Who must certify recovery equipment used during maintenance, service or repair of small appliances that use CFCs, HCFCs, and HFCS? An EPA-approved laboratory.
What are the standards for recovery equipment manufactured before November 15 1993?
(1) Equipment manufactured or imported before November 15, 1993, will be considered certified if it is capable of either recovering 80 percent of the refrigerant in the system, whether or not the compressor of the test stand is operational, or achieving a four-inch vacuum when tested using a properly calibrated …
What standard must be met when a refrigerant is reclaimed?
Standard 700
To be properly reclaimed, used refrigerant must be reprocessed to at least the purity level specified in Appendix A to 40 CFR Part 82, Subpart F [based on Air Conditioning, Heating, and Refrigeration Institute (AHRI) Standard 700-2016Exit].
How does a recovery machine work?
When a recovery machine is hooked up to the manifold or Schraeder valves on the air conditioning system, it creates a vacuum and sucks all the Freon out of the vehicle, cleanses it through a filter and stores it in a storage tank.
When using recovery equipment manufactured after 1993 it must be able to recover _% of the refrigerant when compressor is functioning?
Recovery equipment manufactured on or after November 15, 1993 must recover 90 percent of the refrigerant in the appliance when the compressor in the appliance is functioning or 80 percent of the refrigerant in the appliance when the compressor in the appliance is not functioning; or it must be able to evacuate the …
For which of the following refrigeration systems appliances would it be permissible?
PRACTICE TEST
| Question | Answer |
|---|---|
| The sale of refrigerant is: | restricted to technicians who are EPA certified in refrigerant recovery |
| For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for refrigerant recovery? | a domestic refrigerator |
Which is better a refrigerant recovery machine or not?
Recovery machines that separate the refrigeration or air conditioning system’s oil from the refrigerant are not necessarily better than those that do not. The primary difference is the disposition of the oil. Reclaimers charge for the disposal of the used oil, and some states and municipalities have regulations that the user must follow.
When do you turn off a liquid recovery machine?
The manifold high side valve may need to be adjusted to throttle refrigerant flow into the recovery machine to avoid liquid slugging. 11. When the liquid recovery is complete, fully open both the high side and low side manifold valves. 12. Many recovery machines will turn off once the system reaches vacuum.
Can You recover refrigerant from an old refrigerator?
When recovering from small appliances, first identify the refrigerant that you are about to recover. Older refrigerators, particularly those built before 1950, may contain non-fluorocarbon refrigerants, which must not be recovered with current recovery equipment. The same is true of many recreational vehicle appliances, both old and new.
Do you need to certify refrigerant recovery and recycling equipment?
EPA no longer requires that persons servicing stationary air-conditioning and refrigeration equipment certify that they have acquired refrigerant recovery or recycling equipment and that they are complying with the applicable requirements. Contact Us to ask a question, provide feedback, or report a problem.