The EDS Grand Craft brewhouse in the three-vessel version consists of three vessels: the mash tun, the lauter tun, and the whirlpool combination. Also included in this variant is the wort cooler. Depending on the brewhouse capacity, up to 6 brews per day are possible in this configuration.
The main mashing water quantity is prefilled in the mash tun and heated to the desired mashing temperature. Optionally also via automatic water mixers. The start time can be specified in the EDS control system.
The crushed malt is mashed into the mash tun via the premasher.
The mashing program set in the recipe is automatically controlled by the brewhouse control system. Heating rates, rest times, and temperatures are recipe-dependent parameters set by the brewer during recipe creation.
After the mash has been saccharified and the mash program has ended, the mash is mashed out into the lauter tun. In the 3-vessel configuration, the next batch can already be mashed in afterwards.
Shortly before the end of the mashing program, the lauter tun is automatically preheated by spraying hot water into the tun through the CIP nozzles. This reduces the temperature loss of the mash during transfer.
The gap under the false bottom is flooded with hot water so that the husks are not pressed into the slots of the false bottom during lautering.
At the end of the mashing program, the mash is mashed out into the lauter tun. The entire mash from the mash tun is pumped into the lauter tun. To minimize oxygen intake, the mash is introduced just above the false bottom. To reduce losses, the mash tun is rinsed at the end of the transfer and the mash in the pipes is pushed into the lauter tun with water.
The lauter rest ensures that the mash settles and can be evenly distributed on the false bottom.
The first wort is pumped back into the lauter tun in a loop passing the brew kettle, a process known as hazzy wort circulation. The first wort is now clear and free of husks. The clear wort passes through a sight glass for visual inspection by the brewer.
The clear first wort is now lautered into the third vessel, the wort kettle. Flow sensor, control valve, and the automatically controlled lauter mechanism ensure a constant optimal flow during lautering of the wort.
After the first wort quantity is reached in the kettle, we start sparging in the lauter tun. The sparge water is evenly distributed over the mash and precisely dosed using sensory analysis to ensure optimal washing out of the grains.
The lauter tun finishes the process after reaching the kettle-full amount. The remaining spent grains are first drained off and then discharged out through the side spent grain door or optionally through the spent grain slide at the bottom. The pneumatically operated lauter rake removes the spent grains automatically.
The wort kettle receives the hot wort during lautering from the lauter tun. Once the bottom, and thus the first heating zone, is covered with wort, the wort heating process begins.
When the kettle full amount is reached, the wort is heated to boiling temperature. The vapour condenser is supplied with cold water, which condenses the vapors produced during boiling and reduces steam and odor entry in the brewhouse.
Once the boiling temperature is reached, the boiling time starts, usually about an hour. Jacket temperature controlled boiling ensures a gentle boiling of the wort.
The hops additions set in the recipe are done either automatically via the hop revolver or manually through the manhole after operator notification.
After boiling, let it rest for about ten minutes without heating to bind the protein and calm down the hot wort.
The hot wort is circulated through the wort pump over the tangential inlet of the vessel and set in rotational motion. The whirlpool ensures a clean separation of hot trub and binds protein and hop solids at the conical bottom of the vessel.
After the whirlpool rest, the wort is casted out into the fermentation tank via the slightly elevated side tap over the wort cooler. The elevated outlet reduces the carryover of hot trub and ensures clear wort for beer.
Interested in the EDS Grand Craft? Then contact us for an initial consultation or request a non-binding offer directly.
