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FREE AND STUDY GAMES ABOUT EPA TYPE III EXAM
QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -25 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: After all the liquid has been removed from an average 350 ton, low pressure appliance, approximately how much vapor refrigerant remains in the system
Answer:
100 pounds
Question 2: The standard for machine room safety is
Answer:
ASHRAE-15
Question 3: Where is the purge unit located in a low pressure system
Answer:
The top of the condenser Question 4: During evacuation of systems with large amounts of water, it may be necessary to
Answer:
Increase pressure by introducing nitrogen to counteract freezing
Question 5: When installing more than one, pressure relief valves must be installed
Answer:
In parallel with each other Question 6: In a low pressure chiller, air and other non condensables collect at the
Answer:
Top section of the condenser Question 7: A low pressure chiller used for comfort cooling must be repaired if it has an annual leak rate of ___ of the total charge
Answer:
10 percent Question 8: Because a low pressure system operates below atmospheric pressure (in vacuum)
Answer:
Leaks in gaskets or fittings will cause air and moisture to enter the system Question 9: How long would an equipment owner or operator have to retrofit or retire an appliance that has exceeded the threshold leak rate if the replacement appliance uses 50 pounds or more of an exempt refrigerant
Answer:
18 months
Question 10: If a strong odor is detected during the recovery process
Answer:
A compressor burnout may have occurred Question 11: Which of the following best describes the refrigerant recovery process from an R-123 system
Answer:
Start with the liquid removal and then switch over to liquid recovery Question 12: When charging a low pressure system, refrigerant should be introduced to the system as a vapor to raise the systems saturation tempature to a minimum of
Answer:
36 degrees
Question 13: Which organization establishes the refrigerant safety group standard
Answer:
ASHRAE
Question 14: Which of the following refrigerants has a safety classification of B-1
Answer:
HCFC-134a (R-134a) Question 15: Where is refrigerant added to a low pressure system during the charging process
Answer:
The lowest access point on the system such as the evaporator charging valve Question 16: The EPA required evacuation level for recovery or recycling equipment used on low pressure system is
Answer:
25mm of Hg absolute
Question 17: The rupture disk on a low pressure chiller has a burst pressure of
Answer:
15 psig Question 18: The most efficient method of leak checking a charged low pressure refrigeration unit is to
Answer:
Pressurize the system using controlled hot water or heater blankets Question 19: When leak testing a low pressure chiller, the maximum pressure to use is
Answer:
10 psig
Question 20: To repair a chiller operating with R-22, the technician
Answer:
Must have a Type II certification
Question 21: What can be used to pressurize a chiller system before opening the system for a non major repair?
Answer:
Controlled hot water Question 22: When pressurizing a low pressure system for leak detection purposes, do not exceed
Answer:
10 psig Question 23: The owner must keep records of refrigerant added to a low pressure system during service and maintenance if the system charge is
Answer:
50 pounds or greater
Question 24: Under ASHRAE standard 34, R-134a is classified as
Answer:
A1 Question 25: What type of equipment can be worked on with Type III certification
Answer:
Low pressure
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