Flow Control – for details of the control panel click here
Essentially, automatic closed loop flow control ensures that the extraction rate remains constant. It does this by slowly increasing the speed of the blower as the filter begins to block, this overcomes the resistance to airflow through the filter and keeps the extraction rate constant.
This function is important because a falling extraction rate can cause problems. For example:
- Particles can adhere to laser lenses causing expensive damage
- The temperature profile on soldering ovens can be affected
- People may inhale dust and fumes which escape due to weak extraction
- Products can become contaminated with dust
- Conveyors or equipment may need to be cleaned more often to prevent breakdown
Another benefit of flow control is extended filter life which means lower costs and less downtime for filter changes.
The extraction airflow can be set to the optimum level for the application, the Purex fume extractors will then adjust the blower speed until the actual airflow matches the target airflow and the Flow Control system keeps it at that level.
This is particularly useful when an extractor is fitted to equipment such as a laser or reflow oven that specifies an exact extraction volume to operate. The graphic display shows you the real-time actual airflow so you know precisely how the machine is performing at that time.
The fume extractors alarm signal can be interfaced with other equipment such as a laser or wave soldering machine to stop the process, set off an alarm or perform another function such as turning on a beacon. Alarm signals can include:
- Filter blocked
- Gas alarm
- Particle alarm
The fume extractors can also STOP/START automatically with interfaced machines. A run on timer is also available to ensure dust and fume is extracted after the process stops.
Motor Run Icon
Shows the operator when the fume extractor’s blower is running.