Expobar BREWTUS IV - 5. Incoming Water Pressure; Rotary Pump Water Pressure; Vibration Pump Water Pressure

9
4.
Incoming Water Pressure
Rotary Pump Machines
The Br
ewtus 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 coul
d
damage the pump.
Before we ship the machines
,
we set the brew pressure to 9
Bar
s
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
connectio
n
,
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 wil
l have
an e
ffect on the brew pressure
. We
set the brewing pressure to be at 9
Bar
s
. To do this
,
we set the OPV to maintain 10
Bar
of
pressure wh
en the backflush disc in place.
If you have higher incoming water pressure
you
,
may have to adjust the brew pres
sure down. See below for instructions.
Note:
T
he
higher the incoming wat
er 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 dr
ip 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