Fetco GR Series User Manual - page 5
5
Programming Instructions
Software Version 0.9 and Above
(See Appendix A for units manufactured before August 2003)
Turn the power switch off.
Remove the lower cover.
Turn the power switch on.
The currently programmed model number will flash
briefly. (example: 12 = GR-1.2, 23 = GR-2.3)
Then, if the software default settings are currently
programmed, the display will read DEF. If not,
the display will be blank.
Hold SET for 5 seconds, until the display reads SET.
Release SET, the software version will be displayed.
(Example: 0.9, 1.0, etc.)
Press SET. The display will read TYP briefly,
followed by the currently programmed model number.
Press the UP and DOWN buttons until the correct model
number is displayed. (GR-1.2 = 12, GR-2.3 = 23, etc.)
Press SET. The display will read DEF.
Press SET to skip this section.
To reset the unit to factory default settings, hold SET for
5 seconds, until STO is displayed briefly. This will exit
programming mode. To re-enter programming mode, hold
SET for 5 seconds again.
Press SET. The display will read DLY briefly,
followed by the current motor delay setting in seconds.
(GR-2.2 & 2.3 only)
Press UP and DOWN to adjust.
Press SET.The first switch number will be displayed
briefly, followed by the current setting in seconds.
Example: LH1 = Left side small batch, 7.0 seconds
Press SET. The next switch number will be displayed
briefly, followed by the current setting.
Example: LH2 = Left side medium batch, 13.5 seconds.
Continue this way until all switches are programmed.
See the chart for switch designations.
Important! To save your changes and return to operating
mode, you must hold SET for 5 seconds until the display
reads STo.
Approximate grind times for medium size, average to dark roast beans.
Typical Coffee Dosage
Batch Size
Ounces Grams
Timer setting
½ Gallon
2 – 4 oz.
57 – 113 grams
6.7 - 13.3 sec.
2.5 – 3.0 Liters
2 - 4.5 oz.
57 – 128 grams
6.7 - 15 sec.
1 Gallon
4 – 8 oz.
113 – 227 grams
13.3 - 27 sec.
1.5 Gallons
6 – 12 oz.
170 – 340 grams
20 – 40 sec.
2 Gallons
8 – 16 oz.
227 – 454 grams
27 – 53 sec.
3 Gallons
12 – 24 oz.
340 – 680 grams
40 - 80 sec.
6 Gallons
39 – 51 oz.
1.1 – 1.44 kg.
130 -170 sec.
Grind times are affected by conditions of the coffee beans such as: age, size, oily or dry, and degree of roast.
23
TYP
SET
DEF
LH1
LH2
7.0
13.5
X.X
23
DEF
STo
STo
8.0
CONTROL BOARD
DLY
MOTOR DELAY
This sets the time that the motor
continues to run after the hopper
guillotine closes on GR-2 series
grinders. This delay ensures
that all beans have passed
through the grinding chamber,
preventing cross contamination
of different coffees.
Default setting: 8 sec.
SWITCH DESIGNATIONS
Model
GR- 1.2 1.3 2.2 2.3
Left Small LH1 LH1 LH1 LH1
Left
Med. LH2
LH2
Left Large LH3 LH3 LH3 LH3
Right Small
RH1 RH1
Right
Med.
RH2
Right Large
RH3 RH3
DEFAULT SETTINGS
Small – LH1/RH1 = 7 sec.
Med. – LH2/RH2 = 13.5 sec.
Large – LH3/RH3 = 20.0 sec.