WILLIAMSWARN BrewKeg50, User Manual

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USER GUIDE
WilliamsWarn brewers tend to like quite highly
carbonated beers so we’ve targeted 6.4g/L in a
BrewKeg50
TM at 1ºC. This means, as you can see
on this graph, we need a pressure of 1.1 bar during
dispense. So that’s why we set 1.1 bar pressure on
the low pressure gauge on our CO
2
supply regulator.
Adjusting Carbonation
Carbonation g/L CO
2
Pressure on CO
2
Supply for
Clarification and dispense (1ºC/34ºF)
High 6.4 g/L 1.10 bar
High 6.2 g/L 1.03 bar
High 6.0 g/L 0.96 bar
Moderate 5.8 g/L 0.90 bar
Moderate 5.6 g/L 0.83 bar
Average 5.4 g/L 0.76 bar
Average 5.2 g/L 0.70 bar
Average 5.0 g/L 0.63 bar
Low 4.8 g/L 0.56 bar
Low 4.6 g/L 0.49 bar
If you find this high carbonation level is a little bit too
high for your personal preference, or you are getting
a little too much foam out of the draft beer tap,
then for your next brews just target a lower dispense
pressure. For example 0.9 bar will give you 5.8g/L
carbon dioxide. So that is what you would set on
the low pressure gauge on your CO
2
supply. During
fermentation set your VPRV to release at about 0.4
bar higher than the dispense pressure you’ve chosen
to allow for a pressure drop during cooling and to
have a little excess carbonation in the beer before
clarification. Also, when clarifying you will need to
reduce the vessel pressure to 0.5 bar (7.25psi) below
the dispense pressure (not the fermented pressure) to
introduce the Clarification Agent.
Carbonation for Warmer Beverages
Carbonation g/L CO
2
Pressure on CO
2
Supply for
Clarification and dispense (5ºC/41ºF)
High 6.4 g/L 1.41 bar
High 6.2 g/L 1.34 bar
High 6.0 g/L 1.26 bar
Moderate 5.8 g/L 1.19 bar
Moderate 5.6 g/L 1.11 bar
Average 5.4 g/L 1.03 bar
Average 5.2 g/L 0.96 bar
Average 5.0 g/L 0.88 bar
Low 4.8 g/L 0.81 bar
Low 4.6 g/L 0.73 bar
Please note, if you prefer a warmer beverage
temperature at dispense, for the same amount
of carbonation you need more pressure. So
choose the amount of carbonation you want
and use the graph on the left to set the dispense
pressure you need. If you find your beverage
is over carbonated to your personal taste or
maybe over foaming through your beverage
tap system, put the pressure gauge back on
and open the VPRV up to a lower pressure
and let it stand overnight. This will reduce
the carbonation level. If you’re short of time,
you could try shaking the keg a little bit to help
force the CO
2
out of the beverage.
A Simple Rule of Thumb
If you like the level of carbonation that 1.1 bar
(16 psi) gives you at 1ºC (34ºF), but would like
a warmer beer, a simple rule of thumb is to try
1.2 bar at 2ºC (35.6ºF), or 1.3 bar at 3ºC (37ºF), or 1.4 bar at 4ºC (39ºF), or 1.5 bar at 5ºC (41ºF).
This works well for those who like a high carbonation
level and it will not result in foaming of the beer out
the tap when the beer is poured.