... onto the ground plug of the pump Gravity System For assembling the Gravity System, place the Hot Liquor Tank (the one with the sight gauge on it) on the very top shelf Then the Mash Tun (the one ... The probes for the Digital Controllers are located on the side of the Control Panel Run the black plastic end of the one labeled “ Mash Tun” into the cylindrical thermowell on the face of the ... Liquor Tank, the larger the amount of hot water, the greater the ability to change the temperature of the mash Remember, the more water you have in the Hot Liquor Tank the greater the thermal mass...