Owner`s manual

Alex Duetto 3.0 Espresso Machine
11
Advanced Settings And Modes
Warning: These instructions allow the user to change the machine from 15 amp to 20 amp mode. This should
only be done if a 20 amp circuit is available. Operating the machine in 20 amp mode on a 15 amp circuit poses a
serious fire hazard and should never be done. The manufacturer and/or its distributors assume no liability for
failure to follow this warning.
To get into the advanced
programming mode, with the
machine turned off hold down
both arrow keys and then turn
the machine on. Keep holding
the arrow keys until the
display reads F.01 and then
release the keys.
Use the down arrow key to
cycle through parameters and
then use the up arrow key to
select a parameter to change.
Then use the arrow keys to
change the selected
parameter.
To save the new changes turn
the machine off and then back
on again.
PID Basic Theory - The PID calculation algorithm involves three separate constant parameters, the
proportional, integral, and derivative values. These values can be interpreted in terms of time: P
depends on the present error, I on the accumulation of past errors, and D is a prediction of future errors
based on the current rate of change. These 3 settings work together to determine when and how to
apply power to the heating element to allow for a more precise temperature control. It is not
recommended to change the PID settings unless you have a thorough understanding of how a PID
controller operates. To learn more about PID controllers visit the following link below.
http://en.wikipedia.org/wiki/PID_controller
15 and 20 Amp Modes - The Duetto can be used on a 15 or 20 amp circuit. In 15 amp mode it is only
able to activate one heating element at any given time and always gives priority to the coffee boiler. In
15 amp mode it will cycle back and forth between the coffee and steam boiler heaters. In 20 amp mode
both heating elements can be active at the same time and allows for quicker recovery for the steam
boiler.
Offset - The offset has been calibrated using a special Scace device and should not be changed.
Reset Default Settings - To reset the PID controller to the default settings with the machine off press
and hold the up arrow key while turning the machine back on. When the display reads PrS then release
the arrow key and then turn the machine off and back on again. (Defaults to 15 amp mode)
Parameter
Setting
Description
F.01
F
Change temperature to Fahrenheit
C
Change temperature to Celsius
F.02
2
Coffee boiler on only – 15 amps
3
Steam boiler on only – 15 amps
4
Disabled
5
Both boilers on – 20 amps *See warning above
6
Disabled
7
Both boilers on – 15 amps (Default setting)
P
1.3
Proportional (Present error)
I
.06
Integral (Accumulation of past errors)
D
1.5
Derivative (Prediction of future errors based on rate of change)
T1
200°F
Coffee boiler temperature
T2
255°F
Steam boiler temperature
T3
XXX
Not active (Does not matter what value is)
E1
18
Offset (Temperature difference between group and boiler)
E2
0
Offset (Not used for steam boiler)
E3
XXX
Not active (Does not matter what value is)