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7 October, 09:36

Under EPA's regulations, which of the following methods can be used to pressurize an R11 or R123 system for the purpose of opening the system for a non-major repair?

A. Adding nitrogen

B. Warming the refrigerant

C. Adding compressed air

D. Adding carbon dioxide

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Answers (1)
  1. 7 October, 10:18
    0
    (A) Adding Nitrogen

    Explanation:

    R11 or R123 are flammable substance under certain conditions when mixed with Oxygen, adding Nitrogen is a safety procedure used in displacing any R11 or R123 which are considered as hazardous when mixed with Oxygen.
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Home » Engineering » Under EPA's regulations, which of the following methods can be used to pressurize an R11 or R123 system for the purpose of opening the system for a non-major repair? A. Adding nitrogen B. Warming the refrigerant C. Adding compressed air D.
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