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EPA 608 Study Guide Questions With Revised Correct Answers BEST UPDATED!!

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EPA 608 Study Guide Questions With Revised Correct Answers BEST UPDATED!! Where would you place a leak detector probe to check gas leaks into the water box with water removed - ANSWER the drain valve opening In Which of the following indicates air in a low pressure system - AN...

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  • September 6, 2024
  • 43
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • epa
  • epa 608 study guide questions with revised correc

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EPA 608 Study Guide Questions
With Revised Correct Answers
BEST UPDATED!!

Where would you place a leak detector probe to check gas
leaks into the water box with water removed - ANSWER In
the drain valve opening


Which of the following indicates air in a low pressure system -
ANSWER High head pressure


A hydrostatic tube test kit will - ANSWER Determine if a
tube leaks


When leak testing a low pressure centrifugal chiller with
nitrogen what is the maximum test pressure - ANSWER 10
psig


A ruptured disc on a recovery vessel for low pressure
refrigerant relieves at - ANSWER 15 psig

, On low pressure chillers moisture most frequently enters the
refrigerant system through - ANSWER Leaks from areas
with gaskets or fittings


Excessive running of a purge system on a low pressure chiller
generally indicates what condition - ANSWER Leaking
system


Pressure relief valves can only be installed - ANSWER In
parallel


Where should the discharge from a ruptured disc be piped for
venting - ANSWER Outdoors


what is the primary purpose of a purge unit on a low pressure
chiller - ANSWER Remove noncondensibles from the
system


A company uses a chiller that diverts 55% of its cooling
capacity to one of its manufacturing lines and 45% of its cooling
capacity to air condition the office spaces. Which leak rate
category would this chiller be in - ANSWER Industrial
process refrigeration

, Starting in 2019 what is the leak rate threshold for commercial
refrigeration equipment with a full charge of 50 or more
pounds of an HCFC refrigerant - ANSWER 0.2


Where does refrigerant go after it leaves the purge unit of a
low-pressure centrifugal system - ANSWER The evaporator


To determine if the system is leaking more than the allowable
rate The EPA allows the use of which one of the following
methods to determine the full charge - ANSWER Use of
calculations based on component and pipe sizes


ASHRAE Standard 15-2013 requires the use of room sensors
and alarms to detect - ANSWER Refrigerant leaks


Why do chillers using low pressure refrigerant require purge
units - ANSWER These systems operate below atmospheric
pressure


Why should the oil be removed from a low pressure system at
130°F - ANSWER Less refrigerant will be contained in the oil
the higher temperature

, The EPA's leak repair requirements apply to appliances with a
charge size of - ANSWER 50 pounds or greater


What is meant by the term "high efficiency purge unit" -
ANSWER Purge units that discharge a low percentage of
refrigerant with the air they removed


During evacuation with large amounts of moisture it may be
necessary to increase pressure to counteract freezing with gas
such as - ANSWER Nitrogen


A typical setting for the high pressure cut out control on a
recovery unit used for evacuating the refrigerant from a low-
pressure chiller is - ANSWER 10 psig


A chiller with a charge of 200 pounds of an ozone depleting
refrigerant has passed the initial verification leak test. When
must a follow up verification test be conducted - ANSWER
Within 10 days


Where is the rupture disc located on a centrifugal chiller -
ANSWER The evaporator

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