Fetco GR1.2 Installation Manual

www.fetco.com

GR Series Coffee Grinders

Models:

 GR - 1.2
 GR - 1.3

 GR - 2.2
 GR - 2.3

User’s Guide

Table of Contents

Contact Information ........................................................2

Product Description/Features .........................................2

Specifications..................................................................2

Dimensions & Utility Connections...................................2

Installation.......................................................................3

Operating Instructions ....................................................3

FETCO® is a trademark or trade name of Food Equipment Technologies Company. All other trademarks or trade names are

© 2008 Food Equipment Technologies Company Part # P010 Revised September 5, 2008

trademarks or trade names of their respective owners.

Service and Support .......................................................3

Warranty......................................................................3

Principles of Operation................................................4

Grind Adjustment ........................................................ 4

Programming Instructions...........................................5

Parts ...............................................................................6

Wiring Diagrams ...........................................................13

Appendix A ...................................................................15

FETCO

Food Equipment Technologies Company
600 Rose Road
Lake Zurich • IL • 60047-0429 • USA

Internet: www.fetco.com

Contact Information

Phone: [phone] (US & Canada)

[phone]

Fax: [phone]

Email: [e-mail]

[e-mail]

Product Description/Features

GR-1.2- One permanent hopper – 2 Portion Sizes
GR-1.3- One permanent hopper – 3 Portion Sizes

GR-2.2- Dual removable hoppers – 2 Portion Sizes per side
GR-2.3- Dual removable hoppers – 3 Portion Sizes per side

Hopper Capacity: GR-1.2 & 1.3: 15 lbs. / 6.8 kg.

Specifications

Electrical:

GR-2.2 & 2.3: 5 lbs. / 2.3 kg. each

Timer Range: 00.1 sec. – 999.0 sec.

Grind Rate*: 18 oz. / 510g per minute
Grind Setting Default: Medium
Brew Basket Size: 7” to 9” diameter

* Grind rate is determined at medium grind with medium size, average to dark roast beans

Dimensions & Utility Connections

 FETCO slicing type grinding burrs
 Self adjusting brew basket holder
 Fully automatic, with digital timer control
 Front accessible & Service Friendly
 Motor overload protection
 Control board overload protection

North America: 120 VAC, single phase

Type A motors: 5.2 amps, 0.67 HP
Type B motors: 9.5 amps, 0.74 HP
NEMA 5-15P plug/cord

Export: 230 VAC, single phase

Type B motors: 3.8 amps, 0.74 HP

2

Installation

Warning: Read this User’s Guide
covered under warranty.

1. Inspect the container for visual or hidden damage. The carrier must be notified of any punctured or
damaged cartons immediately.

2. Install the grinder in selected location making sure surface is level, and that grinder will fit.

push equipment against cords or wall outlets.

3. Remove cord from inside hopper and plug into the back of the grinder.

4. Before plugging grinder into 120 volt, 15 amp. wall outlet make sure
outlet is not overloaded, a dedicated circuit is preferred.

5. Following the operating procedures below test grinder for proper
operation.

6. If you need further assistance please call our Technical Support
Dept. at 800-338-2699 or e-mail [e-mail].

before installing. Damage caused by improper installation will not be

Warning : To pre vent

electrical shock, t his
u nit mus t be proper ly
gr o un ded.

Caution: Never

Operating Instructions

1. Turn grinder on/off switch to the on position.

• The power switch will illuminate to indicate that the grinder has power and is operational.

2. Fill the hopper(s) with whole coffee beans.

• The GR-2 models have two 5lb. removable hoppers. These hoppers must sit squarely on the floor
of the hopper chamber. When placing the hoppers inside the hopper chamber make sure chamber
is clear of stray whole beans and debris. The hoppers will not sit properly if this is not done.

• Both hoppers must be placed into the grinder before operating grinder; and plastic covers must be
on hoppers.

3. Place the brew basket with paper coffee filter in the plastic holding arms.

• The plastic arms will hold all FETCO brew baskets up to 52H models; and will fit most all other
manufactures.

• All other sizes, FETCO recommends placing paper coffee filters on lower shelf and grinding
directly into filter.

4. Press portion switch. (Factory Defaults)

• Small portion: 4 ounces

• Medium portion: (Available only on GR-1.3 and GR-2.3.) Approximately 6 ounces

• Large portion: 8 ounces

5. Allow grinder to complete its cycle then remove brew basket from plastic holding arms.

Cleaning:

a) Use stainless steel cleaner

on all stainless steel surfaces. (Never use abrasives on these surfaces.)
b) Use damp cloth on other surfaces. Use mild detergent as needed.
c) Removable hoppers on GR-2 models are dishwasher safe (the covers are not).
d) After washing hoppers FETCO recommends hand drying them.

Service and Support

For service and support information, contact the Technical Support department. Our hours are 7:00 AM to 6:00 PM
Central Time, Monday through Friday. Phone: [phone] or [phone]. Email: [e-mail].

Utilize only qualified beverage equipment service technicians for service. A Service Company Directory may be
found on our web site, http://www.fetco.com.

Warranty

All FETCO grinders come with a limited warranty. Warranty service must be authorized by the Technical Support
Department. A Return Authorization number will be issued for all parts replaced under warranty.

3

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 8 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 a thermal breaker with an audible alarm that will cut power to the motor
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 breakers will automatically reset.

Warning: If this occurs D

O NOT TRY TO FIX THIS PROBLEM YOURSELF. Immediately unplug the grinder and call a

qualified service technician.

Grind Adjustment

1. Empty the hopper(s).

GR-1: Scoop out as many beans as possible. Lift the window up and sweep out the remaining beans.
GR-2: Remove both hoppers and dump the beans out. Place both hoppers back in grinder.

2. Press one of the large portion switches. This will clear the grinding chamber of any remaining beans.

3. Remove the front cover. There are 2 screws in front and 2 underneath near the coffee outlet.

4. Using a 7/8” or 22 mm wrench turn the retaining nut counter-clockwise at least one turn.

5. Using a 3/8” to 1/2” standard screwdriver turn the adjustment screw clockwise for a finer grind, counter­clockwise for a coarser grind.

Note: Do not exceed more than a 1/4 turn in either direction.

6. Turn retaining nut clockwise, locking adjustment screw in place.

7. Grind a small amount of coffee beans to test the setting. Repeat the above steps if necessary.

To reset the grind setting to the factory default:

• Follow steps 1 - 4 of the grind adjustment procedure.

• Turn the adjustment screw clockwise until the grinding discs touch, then

back off slightly.

• Using a marker, mark the twelve o’clock position of the adjustment screw.

COARSE

• Turn the screw counter clockwise to just past the four o’clock position.

• Turn retaining nut clockwise locking adjustment screw in place.

• Test by grinding a small batch.

Note: It may be necessary to adjust the grind time to compensate for the new grind setting.

A finer grind will produce less ground coffee per minute and a coarser grind will produce more ground coffee per minute.

4

FINE

Programming Instructions

X.X

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)

23

 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.

DEF

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

TYP

23

DEF

STo

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.

DLY

8.0

LH1

7.0

LH2

13.5

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

 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

STo

reads STo.

Approximate grind times for medium size, average to dark roast beans.

Batch Size

Ounces Grams

Typical Coffee Dosage

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.

CONTROL BOARD

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

DEFAULT SETTINGS

Small – LH1/RH1 = 7 sec.
Med. – LH2/RH2 = 13.5 sec.
Large – LH3/RH3 = 20.0 sec.

Timer setting

5