Mixed refrigerant should - Study guides, Class notes & Summaries

EPA 608 EXAM 2023/2024 UPDATE!! (QUESTIONS AND VERIFIED ANSWERS) 100% CORRECT ANSWERS 1. Which of the following synthetic lubricants is used with ternary refrigerant blends containing HCFCs? ~ Answer: Alkylbenzene 2. EPA regulations only allow recovered or recycled refrigerant to be ________. ~ Answer: charged into the same or another appliance owned by the same person 3. The ________ program identifies alternative refrigerants for use ~ Answer: SNAP 4. Whi...

ASE Study Guide Practice Test | Questions and Correct Answers | Latest Update 2024/2025 True or False. Chlorine was found to do damage to the ozone layer? - Answer -True True or False. Different refrigerant are ok to be mixed together. Pressure characteristics are a little bit different but should not matter. - Answer - False. High pressure characteristics between R12 and R134a vary considerably. Will result in high head pressure and high system. A vehicle has poor air conditioning perf...

On low pressure chillers, moisture typically enters the refrigerant system through - Answer- air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: - Answer- 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller - Answer- ... A hydrostatic tube test kit is used to: - Answer- determine if a tube leaks Commercial and industrial process refrigeration systems must be repaire...

Type I certification allows the certified person to work on the following type of systems Small appliances 5 pound or less excluding split systems When retrofitting or converting a system to use a different refrigerant, only EPA-approved substitutes can be used. Many refrigerants are said to be a "direct drop in replacement refrigerant" What does the EPA state about drop in refrigerants? There is no such thing as a drop in refrigerant. Recovery equipment used during service, ma...

be connected as far away from the pump as possible a high capacity vacuum pump and short, large diameter hoses will dramatically reduce emissions, pressure drop, and evacuation/dehydration time ozone contains three oxygen atoms one chlorine atom can destroy 100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water CFC's cannot be washed out of the lower atmosphere ODP ozone depletion potentia...

EPA 608 Type II - Questions and Answers R-410A requires recovery tanks rated for at least: ______. a) 240 psig b) 300 psig c) 400 psig d) 500 psig A routine maintenance task which must be performed on refrigerant recycling machines is to: __________. a) check compressor seals b) change electrical fuses c) replace moisture sight glass d) change filter and compressor oil (if any) Pressure relief valve must not be: ______. a) installed in series b) installed in parallel c) installed vertically d)...

1. The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following, a more efficient centrifugal compressor operation results from Answer: Lowering the condensing pressure 2. The heat removed from the refrigerant in a condenser is Answer: Sensible and Latent Heat 3. The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdraw refrigerant for storage in suitable containers. Accord...

GCAP Book Exam Questions With 100% Correct Answers 2024 1% concentration of ammonia is equal to what in parts per million - answer10,000 ppm 1/2 % of ammonia is it deadly concentration - answerTrue (5,000)ppm Ammonia is what on the pH scale - answer11.6 More than 100 pounds release of NH3 in 24 hours is a reportable for release . - answerTrue There are four primary types of injury with exposure to liquid ammonia. Please list all 4 - answerDehydration burn ,chemical burn ,thermal burn ,res...

True or False. Chlorine was found to do damage to the ozone layer? - Answer- True True or False. Different refrigerant are ok to be mixed together. Pressure characteristics are a little bit different but should not matter. - Answer- False. High pressure characteristics between R12 and R134a vary considerably. Will result in high head pressure and high system. A vehicle has poor air conditioning performance. The customer has added R134a refrigerant to the system. Technician A says to use a ...

Refrigeration License Review Exam Questions and Complete Solutions At the condenser refrigerant enters as - Answer: high pressure gas and leaves as high pressure liquid If you were running three compressors, - Answer: highly superheated vapor describes the state of the refrigerant leaving the third compressor the state of refrigerant as it leaves the compressor is (blank) and as it leaves the condenser is (blank) - Answer: compressor-super heated vapor condenser- warm sub-cooled li...