Reta book 2 Chapter 4 Questions & Answers 100% Correct!!
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Reta book 2 Chapter 4
Institution
Reta Book 2 Chapter 4
57- What is the main disadvantage of a hand expansion valves in the early refrigeration system. - ANSWER-They did not automatically adjust to a changing loads so an operator had to frequently check and adjust them.
58- What is the advantage of a thermostatic expansion valve. - ANSWER-They will a...
Reta book 2 Chapter 4
Questions & Answers
100% Correct!!
57- What is the main disadvantage of a hand expansion valves in the early refrigeration system. -
ANSWER-They did not automatically adjust to a changing loads so an operator had to frequently
check and adjust them.
58- What is the advantage of a thermostatic expansion valve. - ANSWER-They will automatically
adjust themselves to match varying load conditions.
61- What is the average starting point for setting superheat at the outlet of a DX coil. - ANSWER-10
degrees
62- Level adjustment of an LL type float switch assembly is accomplished by.. - ANSWER-Repiping or
re-attaching the float at a different level.
63-When servicing a DX air unit - ANSWER-A seperate isolation valve must always be used to isolate
the coil.
64- Which of the following is a typical function of a low side vessel - ANSWER-Phase seperation
65-If a power element of a TXV lost its charge - ANSWER-The evaporator would starve.
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