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BIAC User Manual Installation
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14. If using
a March
815 Pump
Assembly
(model 815
comes with
systems
under
100L/25gal
and model
7S with
systems
larger than
100L/25gal),
wrap the
NPT male
threads with teflon plumber’s tape and attach the tri clamp fitting (some food-grade Teflon paste
can be applied to the thread prior to the tape if it is difficult to form a seal). The 7S pump comes
with tri-clamp fittings welded on but will need a power cord attached for 208-240V power; the
plug for the pump is connected to the pump cord on the Programmable Touchscreen Power
Controller. Have an electrician properly
connect the cord for 208–240V power. The
larger diameter, braided, food-grade, high-
temp silicone hose can be then connected
from the bottom valve on the fermenter
to the inlet port of the pump (3/4” on
the March 815 pump for systems under
100L/25gal and 1” on the March 7S pump
for larger systems). Connecting to the
bottom port will generally yield better wort
clarity, however, if the line is frequently
plugging due to too much grain entering
(there shouldn’t be much grain or you are
probably mixing the mash too vigorously
or too near the bottom of the Colander, or
your crush size is too fine; this will increase
the risk of grain scorching on the element
and ruining the flavor of the beer), it can be
connected to a side port on the cone and the grain that falls through the Colander false bottom
can be removed from the bottom of the fermenter and brought to the top of the Colander
manually. (To minimize plugging due to grain, only connect the recirculation hose to the bottom
of the fermenter after grain bed agitation is completed, and the bottom cone is cleared of grain
that may have settled there.) The long, narrower hose (1/2” ID) should be connected from the
exit/top port of the pump (or to a valve attached to the exit port on the pump; see step 15) and
the other end to the inlet port of the Mash Colander (or sanitary valve attached to this port; see
Figure 27
Figure 28
Summary of Contents for BIAC
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