FermZilla Tri-Conical 27L and 55L Instruction Manual
Page 8 of 13
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Last Updated 9/06/2023 8:44 AM
Yeast Harvesting and Trub Dumping
1.
In order to harvest yeast simply screw the yeast collection bottle onto the tri-clover Butterfly
Valve. You can insert this bottle right from the start of fermentation.
2.
Fermentation is no different to any other fermenter. Once the wort is inside the fermenter
pitch yeast as you would normally.
3.
Once the collection bottle has been fitted open the butterfly valve yeast can fall down into
the collection bottle. The butterfly valve is open when the handle is facing in the vertical
direction and it’s off when it’s in the horizontal position.
4.
By chilling the fermenter this will accelerate the process of the yeast falling out of suspension
and it will greatly speed up the clarification process. The easiest way to chill the FermZilla is
by fermenting in a dedicated fermentation fridge. Ensure that there is some pressure in the
FermZilla when chilling to prevent a vacuum forming.
5.
Once the bottle is full of yeast you can re-cap and store in the fridge for your next brew
or
discard, rinse and sanitise if you just want to dump the trub.
Low Oxygen Dry Hopping
The introduction of oxygen into the beer post fermentation is undesirable as it results in oxidation of
your beer causing what is described as a cardboard off flavour to your final product. Oxidation also
results in loss of hop flavour and aroma and hence low oxygen dry hopping is great for hoppy beer
styles such as NEIPAs, XPAs, Pale Ales and IPAs where you want a punchy hop aroma and flavour.
The FermZilla Tri-conical offer low oxygen dry hopping capability with very few extra required parts
and is quite easy and quick to introduce into your normal fermentation schedule.
To perform a low oxygen dry hop you will need to replace at least one of the PCO1881 Black Caps on
the collection container with a
. This will allow you to connect a
to your collection vessel allowing you to pressurise it and purge
the oxygen from the collection container.
1.
Sanitise your collection vessel and place your dry hops into the collection vessel.
2.
Attach the collection vessel and 2” tri clover lid to the butterfly valve on the FermZilla
TriConical vessel.
3.
Set your regulator to between 5-10psi and connect your ball lock disconnect to the
carbonation cap to pressurise the collection container with CO2.
4.
Disconnect the ball lock disconnect and purge the pressure in the collection container by
slightly loosening the carbonation cap. Then retighten the carbonation cap and repeat step
three at least 3 more times to purge as much oxygen as possible.
