- Study guides, Class notes & Summaries

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

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10 pages

Written in 2024/2025

Grade A+

DocLaura

EPA Core 608 Current study guide | newest|COMPLETE QUESTIONS AND VERIFIED SOLUTIONS (frequently most tested questions)|GET IT 100% ACCURATE!!

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9 pages

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Grade A+

Testflix

A vacum pump should be connected - Accurate Answersas far away from the pump as possible A high capacity vacuum pump and short, large diameter hoses will - Accurate Answersdramatically reduce emissions, pressure drop, and evacuation/dehydration time Ozone contains three - Accurate Answersoxygen atoms One chlorine atom can destroy - Accurate Answers100,000 ozone molecules CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water - Accurate Answ...

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12 pages

Written in 2024/2025

Grade A+

GRADEUNITS

To process refrigerant to a level that is equal to new product specifications as - ANS Reclaiming The low side test pressure data plate value should be used by a technician to determine a safe pressure for - ANS Leak testing Silicone elastomers are not compatible with what refrigerant - ANS HFC How many molecules does an ozone molecule contain? - ANS 3 oxygen atoms Recover any remaining refrigerant and then render the cylinder useless, then recycle the...

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5 pages

Written in 2024/2025

Grade A+

DocLaura

Vented to atmosphere - ANS The purged nitrogen gas shall be: 15 PSI - ANS Low pressure systems typically have a pressure relief valve set____: Slightly above than the atmospheric pressure - ANS The pressure of nitrogen at which that is introduced into the evacuation system after evacuation of refrigerant is: False - ANS CFCs are highly reactive in lower levels of atmosphere: Increase - ANS Long hoses between the unit and the recovery machine re...

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2 pages

Written in 2024/2025

Grade A+

DocLaura

As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere? a. July 1, 1992 b. July 1, 1993 c. November 14, 1994 d. January 1, 1996 - ANS a. July 1, 1992 What is the ozone layer and why is it important to us on Earth? a. Thin layer of R-22 in the atmosphere that filters UV. b. Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth c. Thin la...

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53 pages

Written in 2024/2025

Grade A+

DocLaura

When moisture exists in an operating system, what is most likely to occur? - ANS Acid will form. What factor(s) affects the speed of evacuation? - ANS 1) The size of the equipment being evacuated. 2)The ambient temperature. 3) The amount of moisture in the system A system is considered dehydrated when? - ANS The vacuum indicator shows you have reached & held the required finished vacuum. The over-evacuation of a system: - ANS Does not occur. The ...

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3 pages

Written in 2024/2025

Grade A+

DocLaura

Epa 608 Core Exam 3 Quizzes & Ans 2024!!

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3 pages

Written in 2024/2025

Grade A+

EvaTee

Epa Core 608 Current Study Guide 2024/25 Questions With Verified 100% Correct Answers!!

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7 pages

Written in 2024/2025

Grade A+

EvaTee

EPA CORE 608: Questions/Answers (Verified)

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30 pages

Written in 2022/2023

Grade A+

LeCrae