EPA 608 Type 2 Practice Exam Guaranteed Success

EPA 608 Type 2 Practice Exam Guaranteed Success 1. Industrial process and refrigeration units with a 50-pound charge or more must have leaks repaired if the annualized leak rate is: - ️ 35% or more. 2. Unless plans are made to replace a system exceeding the maximum leak rate, repairs must be made within: - ️ 30 days. 3. EPA regulations state that maintenance, service, or repair involving the removal of the following component is classified as a "major repair": - ️ Pressure switch. ### Refrigerant Classification and Safety 4. Refrigerants CFC R-12, HCFC R-22, and HFC-134a are all classified as: - ️ A1 (non-flammable, low toxicity). 5. All refrigeration and HVAC systems are protected by a: - ️ Pressure relief valve. 6. A refrigerant sensor that sounds an alarm and automatically starts a ventilation system in occupied equipment rooms must comply with: - ️ ASHRAE Standard 15. 7. What can be done with the refrigerant trace gas and nitrogen after the leak is found? - ️ Release to the atmosphere. ### Operating Conditions and Refrigerant Management 8. Non-condensables will cause: - ️ High discharge pressure. 9. A crankcase heater is often used to prevent refrigerant from migrating to the oil during periods of: - ️ Low ambient temperature. 10. High-pressure appliances can be evacuated to atmospheric pressure (0 psig) when: - ️ There is a leak. 11. If an HCFC (OTHER THAN R-22) high-pressure appliance contains 100 lbs. of refrigerant, recovery and/or recycling equipment manufactured after November 15, 1993 must be evacuated to a level of: - ️ 10 inches of vacuum. 12. When dehydrating a system, it should be evacuated to a level of: - ️ 500 Microns. 13. When recovering from a system with a refrigerant leak, recover to a level of: - ️ 0 psig. 14. When using recovery equipment manufactured after November 15, 1993 on a system containing 100 lbs. of R-502, it must be evacuated to: - ️ 10 inches of mercury. 15. If a high-pressure appliance containing 210 lbs. of R-22 refrigerant was manufactured before November 15, 1993, it must be evacuated to a level of: - ️ 4 inches of vacuum. 16. Conditions that allow a system to be opened and repaired without recovering the refrigerant to the required vacuum level are: - ️ A system with a large leak and system pressure at atmospheric conditions. ### System Maintenance and Performance 17. A new split system should be checked for leaks by: - ️ Pressurizing the system with a few ounces of R-22 and an inert gas. 18. An overcharged system will operate: - ️ Less efficiently. 19. Refrigerant should be removed from the condenser outlet if the condenser is: - ️ Below the receiver. 20. EPA regulations require that all commercial and industrial process refrigeration systems containing more than 50 lbs. of refrigerant MUST be repaired when the annual leak rate exceeds: - ️ 35%. 21. Proper recovery techniques begin with the use of appropriate recovery equipment certified by: - ️ EPA approved laboratory. 22. What happens to a refrigerant that is above the saturation temperature? - ️ It remains in a vapor state. 23. Which refrigerant is considered high or very high pressure? - ️ HFC-134a. 24. Air conditioning system short cycling is normally caused by: