Alex Espresso Machine
10
PID Controller
The PID controller is used to control the heating in
place of using a pressure stat. This allows for a more
reliable and precise temperature control. Keep in
mind the temperature shown on the display is the
steam boiler temperature. The water used for making
espresso passes through a heat exchange and it may
be necessary to perform a cooling flush before making
espresso. More information about cooling flushes can
be found in the “Brewing Espresso” section of the
owner‟s manual.
Setting Temperature
To change the steam boiler temperature with the machine turned on press the down arrow
key.
PrG
will appear on the display. Press the up arrow key to view the current setting and
then use the arrow keys to change the temperature. The display will revert back to normal
operation after a few seconds.
Steam Boiler Temperature
– By default the steam
boiler temperature has been set to 255°F, but can be
easily changed. The table to the right shows what
temperature settings corresponds to bar pressure.
There may be a slight variance in pressure depending
on elevation since water boils at different temperatures
at different elevations.
Advanced Settings And Modes
To get into the advanced programming mode,
with the machine turned off hold down both
arrow keys and then turn the machine back on.
Keep holding the arrow keys until the display
reads
F.03
and then release the keys.
Use the down arrow key to cycle through the
parameters and then use the up arrow key to
select a parameter to change. Then use the
arrow keys to change the value of the selected
parameter. After the display reverts back then use the down arrow key to cycle to the next parameter to
change. To save the new changes turn the machine off and then back on again.
Note:
The F.03 parameter is the only setting that should be changed. It is not recommended changing
the PID settings unless you have a thorough understanding of how a PID controller operates. The F.04
setting should NEVER be changed or damage to the machine may occur which will not be covered
under warranty.
Fahrenheit Celsius Bar
248°
120°
1.0
250°
121°
1.1
253°
123°
1.2
255°
124°
1.3
259°
126°
1.4
262°
128°
1.5
Parameter
Setting
Description
F.03
F
Change temperature to Fahrenheit
C
Change temperature to Celsius
P
1.3
Proportional Value
I
.06
Integral Value
D
1.5
Derivative Value
F.04
0
Offset Value
