Question

When HFC-134a become combustible in a mobile air conditioning system.?

Answer 1

When can HFC-134a become combustible in a mobile air condition system?

if shop air is used in the system in an attempt to check for leaks

Answer 2

In an oxygen enriched environment.

Step-by-step explanation:

The amalgamation of HFC-134a with a high concentration of air at elevated pressure can turn combustible in the existence of an ignition source, that is, an oxygen-enriched environment. Thus, at high-pressure condition in the presence of oxygen in a mobile air conditioning system results in combustible HFC-134a.