To achieve good blow-in results the air volume and air pressure must be sufficient for every blow-in situation. When the blow-in machine does not perform optimally, because of insufficient pressure or air volume, the booster/extractor station could be used to improve the performance of the machine: Extra air injected either in front of, or behind the cell-wheel lock of the machine, will substantially improve the performance. This can be crucial in the following circumstances:
- when long hose connections are used
- with high ceilings
- when building elements to be filled are very big
The typical way to connect, is to attach the auxiliary air-inlet of the booster/extractor station to the material stream of the blow-in machine. In addition, a Y-piece is built in after the cell-wheel lock of the machine to which the extra air is then connected.
The booster/extractor station is controlled electrically with the blow-in machine. In that way undesirable situations are avoided, such as that material flows to the booster, or that it flows back to the machine.