EPA 608

Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: ans pressurized nitrogen When a new system has been assembled, the first thing to do is: ans pressurize the system with inert gas and leak check EPA regulations require that leaking commercial or industrial process refrigeration equipment must be repaired when the leak rate exceeds______ of the charge per year. ans 35% Prior to replacing the condenser coil in a high pressure system, th...

Refrigeration technicians who violate the Clean Air Act can: - ans Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - ans recovery and recycling. Refrigerant that is recovered can be returned to: - ans the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed" unless it: - . ...

What are the typical uses of the center port of gauge set? ans Used during evacuation, charging and recovery procedures. What color are the gauges on a manifold gauge set? ans Low pressure is blue, High pressure is red. What are the typical ranges of pressure measurements used on the gauges of a manifold gauge set? ans High side is 0 to 500 PSIG; Low side is 0 to 350 PSIG and 0 to 30 in. Hg below atmospheric pressure. Is the refrigerant leaving a condenser at a high or...

Which refrigerants contain the most chlorine? ans CFC. R11,R12,R500. As of what date did it become unlawful to intentionally release Class I and Class II refrigerants to the atmosphere? ans July 1 1992. Which refrigerants have the lowest ozone depletion potential (ODP)? ans HFC. R134a. The molecule found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is: ans Chlorine. Stratospheric ozone consists of: ans Three oxygen atoms. S...

a vacum pump should be connected ans as far away from the pump as possible a high capacity vacuum pump and short, large diameter hoses will ans dramatically reduce emissions, pressure drop, and evacuation/dehydration time ozone contains three ans oxygen atoms one chlorine atom can destroy ans 100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water ans CFC's cannot be washed out of the lowe...

Which Refrigerants contain the most chlorine? ans CFC's As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? ans July 1, 1992 Which Refrigerants have the lowest zone depletion potential? ans HFC's The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: ans Chlorine Stratospheric ozone consists of: ans Three oxygen atoms Stratospheric ozone de...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? ans November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? ans Recover all refrigerants. The objective of the Clean Air Act is to protect what? ans The earth's stratosphere. HFC's ans HydroFlouroCarbon's CFC's ans ChloroFluoroCarbon's ODP ans Ozone Depletion Potential Which international treaty agreeme...

a vacum pump should be connected correct answer: as far away from the pump as possible a high capacity vacuum pump and short, large diameter hoses will correct answer: dramatically reduce emissions, pressure drop, and evacuation/dehydration time ozone contains three correct answer: oxygen atoms one chlorine atom can destroy correct answer: 100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water correct answer: CFC's ca...

What is the state of the refrigerant entering the metering device? correct answer: High pressure liquid What components are metering devices? correct answer: Thermostatic expansion valve and capillary tube What is the state of refrigerant entering the compressor? correct answer: Low Pressure Vapor What is the color of the low side gauge on the gauge manifold set? correct answer: Blue What can the compound gauge be used for? correct answer: Can only be used for low pressures and ...

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, ...