shekinahwilson7534 shekinahwilson7534
  • 14-12-2022
  • Chemistry
contestada

When charging an R-12 refrigeration system that uses a water-cooled condenser, you must first charge with vapor to a pressure of at least ______, before switching to liquid charging.
a) 0 psig
b) 20 psig
c) 35 psig
d) 100 psig

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