Engine : Refrigeration AC - 74/610 |
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To test for a suspected large refrigerant leak from an R-22 refrigeration system in an enclosed area, how should this be done? |
A) perform a hydrostatic test with water |
B) apply a soap solution to fittings seen to have oil residue |
C) perform a standing vacuum test |
D) use an electronic leak detector to check all fittings for leaks |
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