HVAC CORE EPA

Card Set Information

Author:
blackcat
ID:
212704
Filename:
HVAC CORE EPA
Updated:
2013-04-12 21:08:42
Tags:
Leak Detection Tequniques
Folders:

Description:
Hvac FlashCards
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The flashcards below were created by user blackcat on FreezingBlue Flashcards. What would you like to do?


  1. What is the preffered instrument for detecting small leaks ?
    Electronic leak detectors,One of the advantages of electronic leak detectors over other leak detection methods is higher sensitivity
  2. What is an inert gas typically used in leak detection ?
    To locate a leak on an empty system under the new EPA regulations,the system should be pressurized with an inert gas(DRY NITROGEN)
  3. What is typically indicated by a dehydrated system failing to hold a vacum?
    • To pull a vacum the system is first pulled down to approximately 29in.Hg and valved off.Any leak within the evacuated appliance will cause
    • the system pressure to rise eventually reaching 0 psig.

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