Section 6: The Coffee System 3033-006B
6-4 Concordia Xpress Technical Support Manual
2900-300B
Calibration: Espresso Grind
Over time, it may be necessary to adjust the grinder burr gap to ensure
beans are ground to customer specification. The grinder adjustment
panel is located behind the front panel. The grinder adjust screw is
connected via cable to the grinder adjust worm gear located on each
grinder.
When adjusting the grinder, turn the adjustment screw in ¼ increments.
The coffee powder channel and grinder body hold a volume of ground
beans. When making adjustments to the grind, it is important to pour
three double espressos before assessing the change on the fourth
double espresso pour. Four double espresso pours must occur in order
to ensure the change of grind is fully implemented.
It is possible to calibrate the Xpress for two different types of espresso-
roast beans or for one espresso-based drink and one brewed coffee.
See the Calibrating Brewed Coffee topic on page 4-18 for instructions.
The secondary espresso bean type or beans for brewed coffee should
be stored in the DECAF bean hopper and the machine needs to be
programmed to access the DECAF hopper for that drink type.
Grinder Adjustment Panel
Turning the grinder adjustment screw clockwise reduces the gap
between the upper and lower burrs, resulting in a finer grind,
increasing the extraction time
Turning the grinder adjustment screw counter-clockwise
increases the gap between the upper and lower burrs, resulting
in a coarser grind, decreasing the extraction time
0 1 2 3 4 5 6 7 8 9
FINE COARSE
0 1 2 3 4 5 6 7 8 9
FINE COARSE
FRONT GRINDER
SET
SCREW
FLEX
CABLE
GRIND
ADJUST
SCREW
CW = FINE
CCW = COARSE
To Next Page
