EPA 608 Final Exam Rd. 4

Student Name

Core

What is the proper procedure for checking for noncondensable gases in a refrigeration cylinder?

• A) Shake the cylinder and listen for a sloshing sound
• B) Measure the pressure at a stable temperature and compare it to the saturation chart
• C) Release a small amount of refrigerant and smell it
• D) Use a vacuum pump to extract air

Which type of refrigerant can be legally vented?

• A) R-410A
• B) R-22
• C) Nitrogen
• D) R-134a

What documentation must be maintained for refrigerant purchases?

• a) Invoice only
• b) Technician certification only
• c) Both invoice and technician certification
• d) No documentation required

What is the maximum cylinder filling density for most refrigerants?

• a) 80%
• b) 85%
• c) 90%
• d) 95%

What is the purpose of an oil separator in a refrigeration system?

• A) To clean the refrigerant
• B) To remove moisture
• C) To return oil to the compressor
• D) To separate refrigerant blends

How often must recovery equipment be tested for leaks?

• a) Monthly
• b) Quarterly
• c) Annually
• d) Every time it's used

What should be done if refrigerant gets in your eyes?

• a) Rub them immediately
• b) Wait for them to clear
• c) Flush with water and seek medical attention
• d) Apply eye drops

What is the proper way to store recovery cylinders?

• a) In direct sunlight
• b) In a cool, dry location
• c) Near heat sources
• d) Outside in any weather