EPA 608 Type I Flashcards
Small Appliance
Products manufactured, fully charged and hermetically sealed in a factory with 5 pound or less of refrigerant.
When servicing a small appliance, it is not mandatory to repair a leak, but it is recommended to do so whenever possible.
Technicians servicing small appliances must have Type I or universal certification.
R-600a
A hydrocarbon refrigerant approved for use in new household refrigerators, freezers and combination refrigeration/freezers.
Note: Hydrocarbons are not approved for retrofit applications.
AHRI 740
Industry Standard that requires recovery devices used with small appliance to be able to recover 90% of the refrigerant when the cmopressor is operating achieve a 4 inch vacuum.
When the compressor is not operating , the recovery device must be able to recover/capture 80% of the refrigerant using either a passive or active recovery process or achieve a 4-inch vacuum.
EPA-Approved Laboratory
Recovery equipment used during maintenance, service or repair of small appliances that use CFC’s, HCFC’s , and HFC
s must be certified by an EPA-approved lab.
Sales Restriction
The sale of CFC, HCFC, HFC, and HFO refrigerants to service or install refrigeration and air conditioning equipment is restricted to technicians who are EPA certified in refrigerant recovery.
Low Loss Fittings
Recovery devices used to recover CFC, HCFC’s, and HFC’s should contain low loss fittings that can be either manually closed or automatically closed when disconnected to prevent loss of refrigerant from hoses.
System Dependent Recovery Equipment
The max normal charge of HCFC or HFC refrigerant in an appliance that is allowed to use system dependent recovery equipment is 15 pounds.
Passive Recovery Device
a domestic refrigerator is an example of a refrigeration system/appliance for which it would be permissible to use a passive recovery device.
When using passive rocovery devices on small appliances with non-operationg compressors, it is essential to take measures to hep release trapped CFC, HCFC, or HFC refrigerant from the compressor oil during refrigerant recovery.
R-744
(carbon dioxide, CO2) is a very high pressure refrigerant that generally does not need to be recovered.
Contaminated Refrigerant
If the refrigerant in a recovery cylinder is suspected to be contaminated, the service technician should take a pressure reading of the cylinder.
Contaminated refrigerant should be turned in for reclamation. Reclamation facilities may refuse to accept the refrigerant or charge extra for processing it.
R-22 “Drop-In Substitute”
The is no such thing as a drop in substitute for R22.
Access Fitting Installation
When installing any type of access fitting onto a sealed system the fitting should be leak tested before proceeding with recovery.
Compressor Burnout
When a pungent odor is detected during a sealed system recovery and/or repair, it is most likely that a compressor burnout has occurred.
A technician should watch for signs of contamination in the oil when recovering refrigerant from a system that experienced a compressor burnout because the system will have to be flushed if contaminants are present.
500 Microns
The minimum evacuation level that should be achieved inmost refrigeration systems before charging the system.
