I have put together a study guide for the EPA 608 Type 3 test that will get you prepared to take the test. All of these questions are relevant knowledge that you should know and I’d suggest taking this test as many times possible until you get all of the questions correct. I’d also suggest checking out the EPA 608 core practice test as well since you will have to take the core along with the Type 3 test.
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#1. When using recovery equipment manufactured BEFORE November 15, 1993 you must evacuate a low pressure chiller to what level before making a major repair:
#2. Which is the most preferred method to pressurize a low-pressure systems for leak detection
#3. In a low pressure system, a leak will cause
#4. Which of the following are indicative of a leak in a low pressure system?
#5. To recover refrigerant from low pressure equipment the technician must be certified in
#6. The maximum test pressure for leak testing a low-pressure centrifugal chiller is
#7. According to EPA regulations, commercial and industrial units containing 50 pounds of refrigerants must be repaired when the leak rate is above _______ annually
#8. According to EPA regulations, non-commercial air conditioner units containing 50 pounds of refrigerants must be repaired when the leak rate is above _______ annually
#9. What is the advantage of recovering liquid at the beginning?
#10. When recharging a refrigeration system with R-11, what vapor pressure is necessary in the shells before charging with liquid?
#11. Immediately after recovering the liquid refrigerant, one must
#12. When removing oil from a low pressure system, a temperature of 130°F should be maintained because
#13. Before charging a system with refrigerant liquid, one can determine that enough vapor has entered the refrigeration system by which of the following means?
#14. High pressure cut-out level should be set at ___ for recovery devices used with low-pressure appliances.
#15. It is important to circulate or remove water from chiller during refrigerant evacuation to prevent freezing.
#16. When charging a low pressure unit, which form of refrigerant should be first introduced and why?
#17. The lowest access point on a low pressure centrifugal air conditioner is the
#18. Charging refrigerant liquid into a refrigeration system when it is under a 29 inch Hg vacuum can cause _________
#19. The recharging point for a low pressure centrifugal air conditioner should be done at
#20. When using recovery and recycling equipment manufactured AFTER November 15, 1993, technicians must evacuate an appliance component containing low pressure refrigerants to ______ before making a major repair, depending on the quantity of refrigerant in the system.
#21. As per the EPA, which of the following is considered a major repair?
#22. Which of the following is NOT a major repair?
#23. What is the required vacuum level for recovering refrigerant from a low pressure system if the technician is using recovery equipment manufactured BEFORE November 15, 1993?
#24. Which of the following are the allowable methods for pressurizing a low-pressure system for a non-major repair?
#25. When evacuating a low pressure system, if the system pressure rises after achieving a vacuum, it means
#26. The purge unit in a low pressure system will
#27. The pressure corresponding to 55 F for R-11 is (use chart here)
#28. ASHRAE Standard 15 requires that the rooms with refrigerant systems must be equipped with sensors
#29. In a low pressure system, the pressure relief valves
#30. Under ASHRAE Standard 15, there is a need to have equipment room refrigerant sensor for which of the following refrigerants?
My name is Bob Wells and I am a retired HVAC tech from Washington state. I am currently retired and no longer do much with HVAC, however, I feel like I have a lot of knowledge in the subject and I wanted to create a website where I could talk about what I've learned and help upcoming HVAC techs.
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