5 PRESSURE CONTROL VALVE Assemble the ‘pressure control valve’ as
shown in figure 4. Make certain that the
neck seal is placed on the bottom side of
the Defoamer Cup lid. The ‘pressure
control valve’ regulates the release of
natural CO2 gas produced during
fermentation.
The Defoamer Cup and Disk are
important parts of the pressure control
system in The Beer Machine. The
Defoamer Cup collects excessive
fermentation froth and interacts with the
pressure control valve. The Defoamer
Disk protects the ‘pressure control valve’
from fermentation sediments. Excessive
frothing may be caused by very warm
temperatures during fermentation. See
Page 2.
The Defoamer Disk is pressed onto the
center spike of the Defoamer Cup. A
new Defoamer Disk should be used for
each fermentation. Defoamer Disks are
available from your Beer Machine retail
merchant or directly from The Beer
Machine Company customer service
department or our website store at
www.beermachine.com. The ‘pressure control valve’ is an
important operating part. To remove
and replace for thorough cleaning, press
downward on the top (flat) side. When
re-installing, push the flat side through
from the bottom. The round side is the
down side, (see figure 4) and the flatter
top side should form a perfect circle
when properly worked into place.
When the cup lid is place on top of the
Defoamer Cup the center hole of the
‘pressure control valve’ is positioned
tightly around the center spike. As
pressure rises the valve moves upward
on the center spike releasing pressure
and as pressure declines it goes back
onto the center spike and closes, sealing
in the CO2. You can see rate of
fermentation by placing a small amount
of water on top of pressure control
valve. Bubbles will signal that the
fermentation is active and indicate the
degree of activity as well as discharge
excess pressure. Overpressure, if not
discharged, may damage or stretch
clamps and/or rupture The Beer
Machine. figure 4 defoamer
disk defoamer
cup Place the
neck seal on
underside
of cup lid, Not on top defoamer
cup lid pressure
c o n t r o l
valve MAIN SEAL A. First install one corner. (Be sure to press down firmly)
B. Secondly, press in opposite corner.
C. Then press in remaining two corners.
D. After all four corners are firmly in place, gently press the seal directly
downward into the grooved channel. Using thumbs, begin at
adjacent corners and work
towards the center, while gently
pressing seal downward along the
flat surface of the seal, and into the
grooved channel. Do not press on
the “wings” of the seal.
Repeat on all four sides figure 5 Step A Step C Step C Step B
