Cylinder color-coding is a requirement for manufacturers, so technicians do not need to check labels.

The statement is false because cylinder color-coding is not a reliable exclusive indicator of the contents within a refrigerant cylinder, and technicians should always verify labels for safety and accuracy. While many refrigerants have specific color codes assigned to them that can give a visual cue about the type of refrigerant contained, these codes can sometimes be inconsistent or may not be universally applied across manufacturers. Furthermore, color codes can also vary by region or country, making them less dependable as a sole means of identifying the substance inside the cylinder.

Checking the labels on the cylinders ensures that technicians properly identify the refrigerant they are handling, which is crucial for both safety and compliance with regulations. Handling the wrong refrigerant can lead to equipment damage, environmental hazards, or safety risks. Therefore, even with color-coding, the primary rule remains that technicians must always read the labels to confirm the contents of the cylinder.