Aminoethers are used as corrosion inhibitors in boiler systems in which a working fluid comprising water with an aminoether corrosion inhibitor is circulated from a heater to a utilization site at which the working fluid gives up energy and decreases in temperature. This method includes supplying a first pulse of regenerate solution into the resin tank to charge a first section of the ion exchange resin bed, and supplying a second pulse of regenerate solution to charge a second section of the ion exchange resin bed. Further, the fine particle has a surface at least a part thereof coated with a polymer dispersing agent. The second LED display panel then produces the desired 2D image. An alternative method includes providing a container, providing a readily dissolvable film, the film comprising a substance carried by the film, and introducing the film into the container. At least one electrical variable of the starter is ascertained during a run-up of the starter, and the current starter speed of the starter is determined as a function of it.