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Type 1 Correct Answer - Small appliances- 5lbs or less Type 2 Correct Answer - Residental Units/ Light Commercial Type 3 Correct Answer - Industrial Universal Correct Answer - All types Section 608 of the federal clean air act requires all persons who maintain, service, repair or dispose of appliances that contain regulated refrigerants, be certified in proper refrigerant handling techniques as of Correct Answer - Nov 14th, 1994 3 R's Correct Answer - Recover, Recycle, Reclaim ...

To process refrigerant to a level that is equal to new product specifications as Correct Answer - Reclaiming The low side test pressure data plate value should be used by a technician to determine a safe pressure for Correct Answer - Leak testing Silicone elastomers are not compatible with what refrigerant Correct Answer - HFC How many molecules does an ozone molecule contain? Correct Answer - 3 oxygen atoms Recover any remaining refrigerant and then render the cylinder useless, then...

What has ozone depletion potential (ODP)? Correct Answer - CFC Recovered refrigerants are stored in which of the of the painted tanks? Correct Answer - Grey with yellow top one chlorine atom can destroy can destroy how many ozone atoms? Correct Answer - 1,000,000 A recovery cylinder can hold how many refrigerants? Correct Answer - 1 TXV valve maintaining the pressure difference between _____ and _____ of the system Correct Answer - Condenser and evaporator During each vacuum decay...

Which of the following refrigerant releases is considered a violation of the prohibition on venting ? Correct Answer - Release mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully charged appliance to leak check the appliance . 2.What is the service procedure if the refrigerant in a recovery cylinder is suspected to be contaminated ? Correct Answer - Take a pressure reading of the cylinder . 3.Before beginning a refrigerant recovery procedure , it is ALWAYS nece...

Which of the following factors affect the speed of system dehydration Correct Answer - The ambient temperature and amount of moisture in the system What is the state of the refrigerant leaving the receiver in a refrigeration system? Correct Answer - high pressure liquid When evacuating the system the use of a large vacuum pump could Correct Answer - cause trapped water to freeze What are two factors that, if present, are most likely to lead to an explosion with hydrocarbon refrigerant? ...

Refrigeration technicians who violate the Clean Air Act can: Correct Answer - D) all of the above. After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from: Correct Answer - A) recovery and recycling. Refrigerant that is recovered can be returned to: Correct Answer - A) the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed" unless it: Correct Answer - B) has been chemically ana...

which refrigerant can be purchased is you have EPA's section 608 certification Correct Answer - Only refrigerants that are exempt from the venting prohibition How should disposable cylinders be discarded? Correct Answer - Recover all remaining refrigerant, render the cylinders useless, and recycle the metal CFCs and HCFCs ________making them capable of reaching the stratospheric ozone layer. Correct Answer - do not dissolve in water or easily break down in the atmosphere. Ester-based o...

ashrae standard 15-1994 requires that all machinery rooms must be active an alarm and mechanical ventilation before refrigerant concentrations exceed the? Correct Answer - TIV-TWA Threshold limit valve, Time weighted Average Long hoses between the unit and the recovery machine should? Correct Answer - not be used because they cause excessive pressure drop and increased recovery time emissions A Binary blend is? Correct Answer - Two-part mixture A ternary blend is a? Correct Answer - Thr...

What is a blend of two or more components who's equilibrium vapor phase & liquid phase compositions are the same at a given pressure? Correct Answer - Azeotrope This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine Correct Answer - Halocarbon Chlorofluorocarbons (CFCs) consist of? Correct Answer - Chlorine, fluorine, carbon CFCs are chemically very stable because they contain no? Correct Answer - Hydrogen CFCs are damaging to...

The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. Correct Answer - Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance is defined as a system that is Correct Answer - Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. Correct Answer - System dep...