Wort lauter grant operation tips for micro beer equipment II
--When the wort inlet is on bottom of kettle
In micro beer equipment, the wort lauter grant is connected with wort outlet on lauter tank and the wort inlet at bottom of kettle. We configure a float level ball on the wort grant to control the on/off of the pump. For operating the wort grant, this is our normal way& tips:
We do not use the float ball to frequently open or close the pump during lauter process. The float ball is used as a ‘final protecting tool’: for example, when the wort grant tank is near empty(but the brewmaster do not know), or when the lauter speed is slower and slower or blocked but the pump speed hasn’t been slow down on time,so in those situations, the pump will close automatically to avoid ‘empty running’ and thus avoid the ‘vacuum risk’. So the float ball level sensor is more a safety rather than a control. So when lauter starts, we set the wort pump speed at very slow level firstly, like 10HZ(as a testing/beginning speed).Then we might find that 10HZ too slow while the wort is more and more in the wort grant, so we gradually increase the pump speed (from 10HZ to 20HZ. Our experience is that the normal pump speed will mostly keep at 20HZ during the main lauter process). All this work is to keep the speed that the wort come into the wort grant tank is same as the speed that the wort is pumped away from wort grant to kettle. So the wort level is mostly kept within the lowest and highest level limits inside the wort grant tank. The pump is always running to move the wort from wort grant tank to the kettle.
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Edited by Jana Wang
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