Solution 3 - Adjust the coffee boiler’s thermostat. Replace if necessary.
The temperature in the coffee boiler is controlled by a thermostat. If the thermostat is set improperly
or is not functioning properly, the water temperature for brewing espresso will be inconsitent, re-
sulting in espresso shots that are less than ideal.
Important ! Before proceeding with solution 3, the following safety measures must be taken.
1. Turn the machine off.
2. Disconnect the machine’s power cord from the wall outlet.
1. Measure the temperature of the water leaving the group head. This is most accurately measured
by using a portafilter equipped with a digital thermometer.
2. Most coffees brew best between 195 - 205 F. If the temperature of the brewing water is outside of
the proper brewing range, adjustment of the thermostat is required.
3. Remove the machine’s control panel cover. Locate the metal adjustment screw at the top of the
thermostat and, using a 1/4 x 14” screwdriver, adjust the thermostat.
Turn the screw clockwise to increase the brewing temperature. Turn counter-clockwise to decrease
the brewing temperature. Each 1/4 turn of the screw equals approximately 3 degrees F.
If adjustment of the thermostat does not seem to have any effect on the brewing temperature, most
likely the thermostat’s switch is faulty and should be replaced.
4. Remove the small phillips
screw securing the on/off
knob and remove the knob.
5. Remove the phillips screws
securing the machine’s front
panel. Remove the panel from
the machine.
6. Remove the plastic
insulator screw from the
thermostat.
