Refrigerator repair companies are companies people hire to diagnose refrigerator problems and decide whether they need repairs, tune-ups, or part replacements.
Some refrigerator companies are general; they fix all kinds of refrigerators; others are industry-specific, for instance, home refrigerator repair company, laboratory refrigeration repair company, business refrigerator repair company, etc.
In the video, the narrator is working on industrial refrigerator repairs.
When the operator comes in, the first thing is to try and diagnose the problem. This should be standard for all businesses in the repairs realm. The next step is figuring out what to do to fix the problem. In this case, the narrator decides to weld a hole causing the leak.
Next is seeing if the repair work is effective by using inspection tools to see if any air is escaping. If a repair company is good at their work, they should find that the repairs they’ve just made are effective. Now, there is nothing left to do apart from wrapping up, firing up the machine, informing the owners their machine is fixed, and billing them.