Question 1: How much of vapor contains in a 350 ton R-11 chillier after all the liquid has been removed?
- 100 lbs
- 150 lbs
- 50 lbs
- 200 lbs
EPA 608
NEC 2023
EPA 608 Type 3 Exam Practice Test 3
Take a Free Practice Test EPA Certification Type 3
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epa 608 practice tests
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Frequently Asked Questions
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The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.
Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.
You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.
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TimeEPA 608 Type 3 Exam Practice Test 3 — Question List
Question 2: By using a large vacuum pumps can cause trapped water freezing, what a technician can do to prevent this?
- He should increase the system pressure by introducing nitrogen gas.
- He should decrease the system pressure by introducing nitrogen gas
- He should remove the liquid refrigerant before vapor liquid
- He should remove the vapor refrigerant before liquid refrigerant.
Question 3: What should be done for low pressure refrigeration system when the system is idle?
- The refrigerant should be recovered and kept the system idle.
- The pressure in the system should increase to higher than atmosphere to prevent air accumulation in system
- The oil must be removed from refrigeration system periodically
- Nitrogen gas must be purged in to the system to prevent moisture freezing
Question 4: Under which of the following condition it is better start charging using liquid refrigerant?
- When refrigerant saturation temperature reaches 360 F
- When the refrigerant saturation temperature reaches 56 0F
- When the temperature of water is above 360F
- When the temperature of water reaches 560F
Question 5: The purpose of purge unit in the low pressure refrigeration system :
- Removes the refrigerant from the system
- Removes the air from the system
- Removes the oil from the system
Question 6: Which of the following device will help in evacuating vapor fast from the refrigeration system?
- A heater placed on recovery vessel side
- A high vacuum pump can be used for recovery
- A nitrogen gas can be purged in to system
Question 7: In which part of low pressure refrigeration system the leaks may occur?
- Expansion valve
- Gaskets & Fittings
- Condenser tube
- Evaporator fittings
Question 8: What damage causes to the low pressure refrigeration system if the pressure increases more than 10 psig?
- Rupture disk fails
- Gaskets & Fittings may fail
- Shaft seals may fail
- Large leak may occur in the system
Question 9: For heat removal in water cooled condensing system, where does the water come from?
- Condenser recycling unit
- Evaporator auxiliary unit
- Deep wells
- Municipal water supply
Question 10: In low pressure system whether the refrigerant can go out of the system?
- Yes
- No
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