As the tank is filling the yellow meter shows the volume of liquid in the tank. When the tank is full the filling valve is closed off and the heating process can begin. Heating The grey meter indicates the current being drawn by the heating element. The temperature of the process is shown by the thermometer graphic. This is an automatic temperature controlled process.
Heating takes place until the required temperature is reached.
When the required temperature is reached the product is drained off. Draining The second bottom valve allows the product to be drained away to the next stage of processing. These show volume of liquid, sediment level and pressure. Below the meters an accurate digital value is also displayed. Student activity Observe the automatic process until you are confident that you understand the process and the sequence of the process.