Question 1: In a low pressure system, if the maximum pressure setting exceeds during leak checking …………………….
- Causes a rupture failure
- Causes systems body failure
- Increases the leak point
EPA 608
NEC 2023
EPA 608 Type 3 Exam Practice Test 2
Free EPA 608 Practice Test: Type 3 Exam
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epa 608 practice tests
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Frequently Asked Questions
Yes — completely free with no account needed.
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 2 — Question List
Question 2: If some amount of air exists in low pressure system …………….
- Causes low head pressure
- Causes high head pressure
- Causes low suction pressure
- Causes high suction pressure
Question 3: A partial charge low pressure system can be effectively leak checked by ……………
- Compressed air
- Pressurized liquid nitrogen
- Adding high pressure HCFC-22 refrigerant
- Increasing refrigerant pressure by adding external heat source.
Question 4: What is the purpose of rupture disks in low pressure chillers?
- To relieve the pressure
- To increase the pressure
- To remove trapped moisture
- To increase temperature in system
Question 5: When recharging refrigeration system with CFC-11, what vacuum is necessary in the shells before charging?
- 16.9 Hg vacuum
- 15.4 Hg vacuum
- 17 Hg Vacuum
- 14.7 Hg Vacuum
Question 6: What will happen if the refrigeration system is not evacuated fully?
- Compressor head pressure rises
- Moisture still remains in the system
- Refrigerant vapour exists in the system
- Evaporator coil may fail
Question 7: ………………. Is the Typical pressure for opening the rupture disk in the low pressure chillier
- 14 PSIG
- 15 PSIG
- 24 PSIG
- 12 PSIG
Question 8: What is the purpose of purge unit on chiller?
- Minimizes the effects of contamination
- Minimizes air leakage in to system
- Purges the moisture and prevents it to enter in the system
- Increases the efficiency of the system
Question 9: In a low pressure refrigeration system the rupture disk is connected to ………………..
- Evaporator
- Condenser
- Receiver
- Liquid pump
Question 10: The purpose of circulating water during the evacuation chiller refrigeration system is to …………..
- Prevent the leakage of refrigerant to atmosphere
- Prevent the freezing of water
- Prevent the leakage of the air
- Prevent freezing of refrigerant
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