Owner`s manual

Alex Duetto 3.0 Espresso Machine
8
Normal Operation - Continued
Pressure Gauges
 The top gauge is your boiler steam pressure. When the heating light turns off the boiler
is up to pressure and should be around 1.2 – 1.5 bar. If the steam boiler power switch is
turned off then the steam gauge will not show any pressure.
 The lower gauge is your pump pressure. When the pump is not engaged the gauge will
show the line pressure from your water supply. When you raise the brew lever then the
pressure should go to 9 bar.
Pump
 The pump pressure has been set prior to shipping, but may differ based on your line
pressure or if the machine is used in reservoir mode versus plumbed in. The
recommended setting is 9 bar. Should you need to adjust your pump pressure please
refer to the maintenance section of the owner‟s manual.
 Periodically the pump will come on by itself to maintain the proper water level in the
steam boiler which is normal. When this happens the PID display will turn off to protect
the heating element during filling.
Lights
 There are 2 red heating indicator lights on the front of the machine. Each is stamped
with a white decal to indicate which light is for which heater.
 The top light is for the steam boiler. The light will illuminate whenever the steam boiler is
heating. Once the steam boiler is up to pressure the light will go out and then it should
cycle on and off approximately once a minute to maintain the steam pressure in the
boiler.
 The bottom light is for the coffee boiler. The light will illuminate whenever the coffee
boiler is heating. Once the coffee boiler is up to temperature then the light will cycle on
and off approximately once a minute to maintain the temperature in the boiler. As it
approaches temperature the coffee light will flash on and off rapidly which is normal.
This is done for more precise temperature control and to prevent the temperature from
exceeding the set point.