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Author Question: How do evaporators in medium temperature refrigeration cases normally defrost? A) Electric ... (Read 66 times)

jon_i

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on: Jul 27, 2018
How do evaporators in medium temperature refrigeration cases normally defrost?
 
  A) Electric heaters built into the evaporator coil
  B) Hot gas is bypassed around the condenser straight into the evaporator
  C) The case air circulating over the coil while the compressor is off
  D) Small defrost gas burners

Question 2

Select the possible causes of an underfeeding TEV. You may choose more than one.
 
  A) Undersized valve
  B) Restricted filter drier
  C) High superheat adjustment
  D) Oversized TEV
  E) Low superheat adjustment
  F) Restricted inlet screen on TEV
  G) TEV sensing bulb not making good thermal contact
  H) Dead thermostatic bulb charge


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emsimon14

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Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

A, B, C, F, H


jon_i

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Reply 2 on: Jul 27, 2018
Wow, this really help

alexanderhamilton

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  • Posts: 334
Reply 3 on: Yesterday
Excellent

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