Which of the following statements is correct concerning the testing of an R-22 refrigeration system for leaks in an enclosed compartment with a halide torch?

Question

Accepted Answer

Halide torches are useful in locating very small R-22 leaks.

Answer

The flame of a halide torch will turn blue in the presence of R-22.

Answer

Halide torches are not suitable for detecting R-22 leaks.

Answer

To gain sensitivity, the largest possible flame should be used with the halide torch.

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