4
Principles of Operation
GR-1
When one of the start switches is pressed, the timer energizes the grinding motor. The coffee beans are fed into the
grinding chamber by a rotating auger spring. When the timed cycle is complete, voltage is removed from grinding
motor.
The power/stop switch is used only when it is necessary to interrupt the grind cycle before the cycle is finished.
GR-2
When one of the start switches is pressed, the timer simultaneously energizes the grinding motor and the hopper
solenoid. The hopper solenoid opens the guillotine on the bottom of the hopper, which allows the coffee beans to
drop into the grinder. The coffee beans are fed into the grinding chamber by a rotating auger spring.
When the timed cycle is complete, voltage is removed from the hopper solenoid and the guillotine closes, stopping
the flow of beans out of the hopper. The auger spring continues to feed any remaining beans into the grinding
chamber.
Several seconds after the guillotine closes, voltage is removed from the grinding motor. This delay ensures that all
beans have passed through the grinding chamber, preventing cross contamination of different coffees.
The motor delay is factory set at 20 seconds, but can be adjusted if necessary. (See Programming section.)
The power/stop switch is used only when it is necessary to interrupt the grind cycle before the cycle is finished.
Grinder Foreign Object Protection
FETCO coffee grinders feature two types of overload protection to prevent damage to the unit if a foreign object
enters the grinding chamber and stalls the motor.
• The control board is equipped with an audible alarm if the control board overheats.
• The motor is equipped with a thermal breaker (no alarm) that will cut power to the motor if the motor
overheats.
Once the foreign object is removed and the unit cools down, the thermal breaker will automatically reset.
Warning: If this occurs DO NOT TRY TO FIX THIS PROBLEM YOURSELF. Immediately unplug the grinder and call a
qualified service technician.
Installation safety and hygiene directions-For International and CE equipment
1. Access to the service area is restricted to persons having safety/hygiene knowledge and practical experience of the
coffee grinder. This appliance must be installed in locations where it can be overseen by trained personnel.
2. For proper operation, this appliance must be installed indoors where the temperature is between 10°C/50°F to
35°C/95°F and with moderate humidity.
3. All commercial food equipment, including this unit, is not intended for use by children or persons with reduced
physical, sensory, or mental capabilities. Ensure proper supervision of children and keep them away from the unit.
4. Children should be supervised to ensure that they do not play hot beverage equipment.
5. This unit must be installed and serviced by qualified personnel only.
6. Installation must conform to all local electrical codes. Installation by unqualified personnel will void the unit warranty
and may lead to electric shock or burn, as well as damage to unit and/or its surroundings.
7. If the power cord requires repair or replacement-it must be performed by the manufacturer or authorized service
personnel with the specified cord only from the manufacturer in order to avoid a hazard.
8. Review the dimensions for the unit and verify that it will fit properly in the space intended for it. Verify that the counter
or table will support the total weight of the brewer and dispensers when filled (See: Technical Data).
9. Do not tilt appliance more than 10° to insure safe operation.
10. Unit is for protected indoor use only. Do not steam clean or use excessive water on unit.
11. This unit is not “jet-proof” construction. Do not pressure wash or use jet spray to clean this unit.
12. The unit is not waterproof-do not submerge or saturate with water.
Do not operate if unit has been submerged or saturated with water.
Equipment exposed to flood and contaminated must not be used due to electrical and food safety.
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