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4. Incoming Water Pressure
Rotary Pump Machines
The Brewtus IV-R is designed to be used with a water line connection. The pump will
work fine off any standard incoming water pressure. The water line can be dropped into a
water container, if you like, but you must be careful not to let it run dry as it could
damage the pump. Before we ship the machines, we set the brew pressure to 9 Bars at an
incoming pressure of 40 PISG. If the incoming pressure is higher than 40 PSIG, the brew
pressure may have to be adjusted down; if it is lower, the pressure may have to be
adjusted up.
Note: When using the water line connection, we highly recommend that you also hook up
a drain line.
Vibration Pump Machines:
When using a vibration pump machine with a water line connection, we recommend
installing a pressure reducer. The machines will run on incoming water pressure from 5
PSI to 50 PSI. The incoming water pressure will have an effect on the brew pressure. We
set the brewing pressure to be at 9 Bars. To do this, we set the OPV to maintain 10 Bar of
pressure when the backflush disc in place. If you have higher incoming water pressure
you, may have to adjust the brew pressure down. See below for instructions. Note: The
higher the incoming water pressure the more water will be diverted into the drip tray via
the brew pressure control (OPV) valve and the more you will have to empty the drip tray
if you are not using the drain line connection. When using the water line connection, we
highly recommend that you also hook a drain line to guard against the drip tray
overflowing.
Wire location for
reservoir operation
Wire location for water line
hook up
