What characteristic is FALSE regarding a capillary tube metering device?

A characteristic that can be identified as incorrect regarding capillary tube metering devices is that they are not sensitive to system debris. Capillary tubes are essentially narrow passages that can easily become obstructed by contaminants present in the refrigerant system. When debris or particles accumulate within the tube, they can restrict the flow of refrigerant and adversely affect system performance. This sensitivity to debris is a critical consideration in the maintenance and operation of systems utilizing capillary tubes.

In contrast, the other statements about capillary tubes hold true. For instance, they indeed have no moving parts, which is advantageous as it reduces mechanical failure risks. Additionally, capillary tubes are precise in their sizing to match the system's capacity, ensuring proper refrigerant flow. They also allow pressures to equalize after the compressor shuts down, which is essential for the overall efficiency and stability of the refrigeration cycle.