Liquid Visors in the Cooling System

The liquid display allows a number of advantages when it comes to diagnosing problems in the system because it allows you to view the state of the refrigerant inside the system. Through it, it is possible to visualize the presence of bubbles within the systems, which could affect the performance of the system.
Liquid Viewer Attributes
  Many liquid displays also have the attribute of detecting humidity if the yellow color appears inside the display, we can say that there is moisture in the system. If the green color appears we know that there is no presence of moisture. This type of display greatly simplifies the work because it speeds up the diagnosis.