USER MANUAL
Speedster
page 14
Set boiler temperatures
The factory settings of the coffee boiler and steam boiler temperature controllers are 93 and 135
degrees Centigrade (°C) respectively (200 and 275 °F). Saturated steam pressure at 135 °C is
approximately equivalent to 3.2 bar. As the gauge displays overpressure (pressure w.r.t. environment)
it will show 2.2 bar at 135
°
C.
The controllers are locked to prohibit unintended changes but allow, within limits, for changes in
operational temperature.
If you want to make other adjustments, see section “PID-parameter settings”
in the Maintenance Manual (
“technical information” section) to unlock the controller.
Coffee boiler
The display of the PID-regulator of the coffee boiler is located on the front panel of the machine in
between the on/off switch and the model tag (see
Figure U 5
).
Figure U 5. Showing both controllers and on/off switch.
Procedure to change the coffee boiler temperature
1. Press the SET/ECO key on the PID and keep pressed. The display will show the currently set
operational temperature value.
Note!
When you press the SET/ECO key for 6 seconds or longer, the controller changes to ECO-
mode (a lower temperature setting) and the display will read "Eco". Pressing the key again for
6 seconds will change it back to operational temperature.
2.
Within 6 seconds
, press the key with arrow up (
) to increase the temperature, press the
key with arrow down (
) to decrease the temperature.
3. When you have set the temperature as desired release the SET/ECO key; the controller will
return to its normal operation and will bring the boiler to its newly set temperature (mind you,
cooling down to a lower set temperature will take longer than heating up the coffee boiler).
Note!
The temperature of the coffee water is measured by a probe in the coffee boiler. The temperature
reading on the PID is thus the temperature within the boiler. The temperature of the water leaving the
group at the group screen on top of the coffee bed will be 1.5-2.5 degrees Centigrade lower,
depending on environmental conditions. You may account for this when fine-tuning the temperature
setting on the PID. The procedure is described in the technical manual (available upon request as pdf-
file).
Steam boiler
The steam boiler controller is in fact a device identical to the coffee boiler controller, but with different
parameter settings such that it functions as a very precise thermostat. Changing the operational
(steam boiler) temperature is the same as for the coffee boiler controller.
coffee boiler
controller
steam boiler
controller
on/off
switch
