Blog

The fan has power, but the controller still reports a cooling fault. In another machine, the fan is visibly blocked and no alarm appears. Both problems can come from treating

The old fan has become noisy, the original part is unavailable, or a buyer needs a second source before the next production run. The quickest search is usually by frame

The fan looks large enough on paper, yet one side of the heat exchanger stays hot. Adding fan speed helps only a little, while noise rises quickly. In many cases,

A prototype cools the enclosure correctly, but the first production units run a few degrees warmer. The fan label and part number have not changed, so it is tempting to

A fan that keeps a power module cool on the bench may still be the wrong choice for medical equipment. In the finished device, the same fan can produce an

A CNC machine can run normally during a short setup cycle and then begin producing drive alarms, controller resets or position errors after several hours of production. When the faults

Two fans rated at 40 dB do not produce 80 dB. The decibel scale is logarithmic, so equal independent sources add 3 dB: the simple estimate is 43 dB. That

A 120 x 120 x 25 mm fan and a 120 x 120 x 38 mm fan fit the same panel opening, so the thicker version can look like an

In a multi-fan enclosure, one stopped fan is not always just “zero airflow.” Its opening can become a low-resistance leak. The remaining fans pressurize one side of the panel, and

An enclosure can have two fans running at full speed and still develop a hot spot. The fans may be moving plenty of air, but not enough of that air

The fan reaches its specified speed, the catalog curve looks adequate, and the enclosure still runs hot. This is a common point where a team suspects a bad fan. The

A fan that runs quietly on a vertical test bench may behave differently when installed flat in the roof of a cabinet. Gravity has not changed the airflow requirement, but