User's Guide
Contents
1. USER S GUIDE www fetco com GR Series Coffee Grinders Models GR 12 GR 2 2 GR 1 3 GR 2 3 b k FETCO P GA 23 FETCO cr i o Da 2 Driven To Pioneer Innovation Table of Contents Contact Information 2 2 Service and Support Product Description Features 2 Warranty i atu tte e d eet e te opeciflcalloris edet ret RE eel breeds 2 Principles of Dimensions amp Utility Connections 2 Grnd AdjJustmient cr rettet rte tine Installatiom tet Ete Ri 3 Programming Instructions Operating Instructions u LL LAL u 3 Wiring asas Appendix A ut cde tento ER eiie datant kuna FETCO is a trademark or trade name of Food Equipment Technologies Company All other trademarks or trade names are trademarks or trade names of their respective owners 2008 Food Equipment Technologies Company Part PO10 Revised September 5 2008 Contact Information FETCO Food Equipment Technologies Company 600 Rose Road Lake Zurich e IL e 60047 0429 e USA Internet www fetco com Phone 800 3382. 9 2 mon DNE TECHNOLOGIES COMPANY n X3 56 26 947 S MN Programming Instructions For GR 1 8 GR 2 Grinders manufactured prior to August 2003 Factory Settings e GR 12 Small batch switch 13 seconds grind time Large batch switch 26 seconds grind time e GR 1 3 Small batch switch 13 seconds grind time Medium batch switch 19 5 seconds grind time Large batch switch 26 seconds grind time e GR 22 Small batch switch 7 seconds grind time Large batch switch 13 5 seconds grind time e GR 23 Small batch switch 7 seconds grind time Medium batch switch 13 5 seconds grind time plus 7seconds additional after hopper closes Large batch switch 20 seconds grind time plus 7seconds additional after hopper closes Timer Adjustment Remove the base panel e Press and hold the set button for three to five seconds The LED display will show SET While in the programming mode the grinder motor and guillotine solenoids are disabled e Select the start switch you wish to reprogram depress switch The display will momentarily show the switch identification S I D Switch Identification Model Sm Batch Med Batch Lrg Batch Sm Batch Med Batch Lrg Batch Left Left Left Right Right Right GR 1 2 LH1 X LH3 X X X GR 1 3 LH1 LH2 LH3 X X X GR 2 2 LH1 X LH3 RH1 X RH3 GR 2 3 LH2 LH3 RH1 RH2 RH3 e The
3. 12uF 450VAC 50 60 Hz EXPORT VERSION ONLY MOTORS 67003 CAPACITOR 100VAC 50uF 250VAC 50Hz JAPAN VERSION ONLY 49 1 67004 CAPACITOR 120VAC VERSION 80 450VAC 50 60Hz TYPE B 1 67005 CAPACITOR 230VAC VERSION 18uF 450VAC 50Hz EXPORT VERSION ONLY MOTORS 2 67004 CAPACITOR 120VAC VERSION 80uF 450VAC 50 60Hz JAPAN VERSION 2 REQD 22 1 83033 WASHER M8 SPRING LOCK 23 1 84023 NUT HEX M8 S S 24 1 65005 CONNECTOR POWER INLET 63038 CORD AMERICAN 6FT 63043 CORD ENGLAND 6 5FT 25 1 63042 CORD AUSTRALIAN 6 5FT 63041 CORD EUROPEAN 6 5FT 63044 CORD SOUTH AFRICA 6 5FT 26 2 401197 WIRING DIAGRAM UNIVERSAL GR 2 27 2 83031 WASHER 3 8 S S FLAT 28 2 83032 WASHER 3 8 S S SPRING LOCK 29 2 82069 SCREW 3 8 16x3 4 LG HEX HD CAP 30 1 01410 COVER REAR GR 2 31 10 82071 SCREW 6 32x3 8 PAN HD PHIL w DUAL ACTION 32 1 002178 WELDMENT BASE COVER GR1 2 34 4 73030 FOOT GRINDER 35 1 84002 NUT HEX 8 32 S S 36 1 83026 WASHER 8 S S INTERNAL TOOTH LOCK 37 1 21058 ROD VIBRATION DAMPENING 38 1 82032 SCREW 8 X 1 2 TRUSS HD PH SS SHEET MET 39 4 29007 NUT 4 40 NYLON FINGER 16 i K032 CONTROL BOARD REPLACEMENT KIT 120VAC K048 CONTROL BOARD REPLACEMENT KIT 220VAC EXPORT ONLY n 2 82075 SCREW 6 32 X 5 8 PHIL TRUSS S M S TYPE A MOTORS ONLY 82053 SCREW 6 32 X 1 2 TRUSS HD PHIL MACHINE TYPE B MOTORS ONLY FM 01406 COVER GRINDER SERVICE K058 SERVICE GRINDING COVER WITH RAILS 42B 1 03471 COVER GASKET
4. Place the brew basket with paper coffee filter in the plastic holding arms e The plastic arms will hold all FETCO brew baskets up to 52H models and will fit most all other manufactures e 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 e Medium portion Available only on GR 1 3 and GR 2 3 Approximately 6 ounces e 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 800 338 2699 or 847 719 3000 Email techsupport fetco com 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 is
5. ASSY TYPE B SEE FIG 4 MOTOR ASSY TYPE A SEE FIG 3 Q NA 2 lt e V ie List Figure 2 PART DESCRIPTION 1 MOTOR ASSEMBLY TYPE A SEE FIG 3 eee MOTOR ASSEMBLY TYPE B SEE FIG 4 2 4 84024 NUT HEX 1 4 20 18 8 S S 3 4 83025 WASHER 1 4 S S SPRING LOCK 4 4 83034 WASHER 1 4 S S FLAT 5 1 056 COFFEE FLOW GUIDE SET OF 2 FOR A MOTORS ONLY 6 1 23086 COFFEE OUTLET GR1 GR2 FOR A MOTORS ONLY 7 2 82070 SCREW M3x8 PAN HD PHIL 18 8 5 5 M S FOR A MOTORS ONLY 8 1 03185 PLATE GRINDER MOTOR 9 2 29015 TAPE NOISE DAMPING 10 4 82053 SCREW 6 32x1 2 PHIL SCREW TRUSS HEAD M S 11 2 23085 MANIFOLD 12 4 84018 NUT HEX 10 32 MACHINE SCREW 13 4 83037 WASHER 10 REG SPR LOCK 14 4 83036 WASHER 10 FLAT 102091 ASSEMBLY SOLENOID 120VAC 15 2 102154 ASSEMBLY SOLENOID 230VAC EXPORT VERSION ONLY 102155 ASSEMBLY SOLENOID 100VAC JAPAN VERSION ONLY 16 A066 ASSEMBLY HOPPER GR2 SEE FIG 5 An 23093 CAPACITOR 120VAC 23094 CAPACITOR 220VAC EXPORT VERSION ONLY 19 67001 CAPACITOR 120VAC VERSION 40uF 450VAC 50 60Hz TYPE A 1 67002 CAPACITOR 220
6. 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 e 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 e 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 Do 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 Press one of the large portion switches This will clear the grinding chamber of any remaining beans Remove the front cover There are 2 screws in front and 2 underneath near the coffee outlet Using a 7 8 or 22 mm wrench turn the retaining nut counter clockwise at least one turn Using a 3 8 to 1 2 standard screwdriver turn the adjustment screw clockwise for a finer grind counter clockwise for a coarser grind Note Do not exceed more than a 1 4 turn in either direction Turn retaining nut clockwise locking adjustment screw in place Grind a small amount of coffee beans t
7. GRINDING OUTLET B MOTORS ONLY 42C 1 24104 GASKET OUTLET TYPE B MOTORS ONLY aa A 45073 OVERLAY GR2 2 45072 OVERLAY GR2 3 44 4 or 6 58061 SWITCH START ROCKER N O 250 VAC 45 1 58063 SWITCH POWER ROCKER RED 120 VAC 46 4 29010 FASTENER 9 32 HEAD DIA x 165 LG NYLON PUSH IN HOPPER GUIDE 47 1 23108 HOLDER BREW BASKET GR1 2 48 4 82097 SCREW 10 32 X 0 625 S S PAN HEAD PHILLIPS 49 4 83037 WASHER 10 SPRING LOCK 50 2 97033 BUMPER 1 2 DIA FLAT TOP ADHESIVE BACKED BLK 51 1 44017 LABEL GRAIN SIZE ADJUSTMENT GR1 2 53 4 402063 ELECTRICAL HARNESS 2 2 402064 ELECTRICAL HARNESS GR2 3 53 3 86053 PLUG 0 812 DIA HOLE 54 4 24090 WASHER 18 8 55 86 SCREW SIZE SEALING NEOPRENE BONDED 9 Figure 3 GR 1 amp GR 2 Motor Assy A NOTE ITEM 20 IS OPTIONAL NOT REQUIRED FOR REVISED GRINDING DISCS Parts List Figure 3 Description COVER SCREWS 2 2 56013 COVER WASHERS 1 501 COVER ASSEMBLY FOR GRINDING CHAMBER includes K042 bearing assy W BEARING ASSEMBLY includes bearing and adjustment shaft inside ITEM 3 cover assembly 4 1 56014 ROTORSCREW 5 1 5605 ROTOR WASHER 6 1 509 ROTATING DISC FLANGE WASHER ASSEMBLY NOT SOLD AS A COMPLETE ASSEMBLY 8 1 8510 AUGER SPRING 6 l 82161 GRINDING DISC MOUNTING SCREWS 14006 GRINDING DISC SET OF TWO GRINDING CHAMBER HOUSING ASSY SEE NOTE
8. all switches are programmed DEFAULT SETTINGS See the chart for switch designations Small LH1 RH1 7 sec gt Important To save your changes and return to operating Med LH2 RH2 E 13 5 sec mode you must hold SET for 5 seconds until the display STo Large LH3 RH3 20 0 sec reads STo Approximate grind times for medium size average to dark roast beans Batch Size Typical Coffee Dosage Timer setting 57 128 grams 7 170 340 grams 99 575 717 14144 Grind times affected by conditions of the coffee beans such age size oily or dry and degree of roast 5 Parts Figure 1 GR 1 2 8 GR 1 3 Grinders with serial numbers beginning with the number 2 or 3 were manufactured with Type A motors Grinders with serial numbers beginning with the number 7 were manufactured with Type B motors MOTOR ASSY TYPE B MOTOR ASSY TYPE A SEE FIG 4 SEE FIG 3 Parts List Figure 1 PART NO DESCRIPTION MOTOR ASSEMBLY TYPE A SEE 3 e MOTOR ASSEMBLY SEE FIG 4 2 4 84024 NUT HEX 1 4 20 SCREW SIZE 3 4 83025 WASHER 1 4 S S SPRING LOCK 4 4 83034 WASHER 1 4 S S FLAT 5 1 056 COFFEE FLOW GUIDE SE
9. display will then show the current timer setting for the switch you have selected e By pressing the up and down buttons you can now change your timer settings e The new programmed time will be automatically saved when you select the next start switch to be programmed e When all Start switches are programmed with the desired settings press the set button The display will then go blank and the control board will return to normal operation Note All changes will be lost if you do not press the set button Approximate grind times for medium size average to dark roast beans Batch Size Typical Coffee Dosage Timer setting Gallon 2 4 2 i 57 113 grams 6 7 13 3 sec 2 5 3 0 Liters i 57 128 grams 6 Gallons i 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 15
10. 2699 US 8 Canada 847 719 3000 Fax 847 719 3001 Email sales fetco com techsupport fetco com 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 FETCO slicing type grinding burrs gt Self adjusting brew basket holder gt Fully automatic with digital timer control Front accessible amp Service Friendly gt Motor overload protection gt Control board overload protection Specifications Hopper Capacity GR 1 2 8 1 3 15 Ibs 6 8 kg GR 2 2 amp 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 Electrical 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 15 plug cord Export 230 VAC single phase Type B motors 3 8 amps 0 74 HP Grind rate is determined at medium grind with medium size average to dark roast beans Dimensions amp Utility Connections 120 DEG 1502 28 1 2 724 CDFFEE SPDUT 11 1 2 292 GR 1 CORD W PLUG GR e PROVIDED 15 1 0 394 Se o T VIEW GR 1 GR 2 Installation Warning Read this User s Guide before installing Damage
11. 65005 CONNECTOR POWER INLET 29 1 002178 WELDMENT BASE COVER GR1 2 30 1 21058 ROD VIBRATION DAMPENING 31 1 82032 SCREW 8 x 1 2 S S T S PHILL TRUSS HD 32 4 73030 FOOT GRINDER 33 4 29007 NUT 4 40 NYLON FINGER P K032 CONTROL BOARD REPLACEMENT KIT 120VAC K048 CONTROL BOARD REPLACEMENT KIT 220VAC EXPORT ONLY 35 1 84002 NUT HEX 48 32 5 5 36 1 83026 WASHER 8 S S INTERNAL TOOTH LOCK 54 5 82075 SCREW 6 32 X 5 8 PHIL TRUSS S M S TYPE A MOTORS ONLY 82053 SCREW 6 32 X 1 2 TRUSS HD PHIL MACHINE TYPE B MOTORS ONLY E 01406 COVER GRINDER SERVICE K058 SERVICE GRINDING COVER WITH RAILS 38B 1 03471 COVER GASKET GRINDING OUTLET TYPE B MOTORS ONLY 38C 1 24104 GASKET OUTLET B MOTORS ONLY 39 1 58063 SWITCH POWER ROCKER RED 120VAC 40 20r3 58061 SWITCH START ROCKER N O 250V mo 45074 OVERLAY 1 2 45075 OVERLAY 1 3 42 1 23108 HOLDER BREW BASKET GR1 2 43 4 82097 SCREW 10 32 x 0 625 S S PAN HEAD PHILLIPS 44 4 83037 WASHER 10 SPRING LOCKR 45 1 44017 LABEL GRAIN SIZE ADJUSTMENT GR1 2 46 2 97033 BUMPER 1 2 DIA FLAT TOP ADHESIVE BACKED BLK 39 402061 ELECTRICAL HARNESS GR1 2 402062 ELECTRICAL HARNESS GR1 3 48 3 86053 PLUG 0 812 DIA HOLE Figure 2 GR 2 2 GR 2 3 Grinders with serial numbers beginning with the number 2 3 were manufactured with motors Grinders with serial numbers beginning with the number 7 were manufactured with Type B motors MOTOR
12. BELOW ROTATING DISC FLANGE ALSO REQUIRES 20 24049 GRINDING RING MOTOR SHAFT PIN GRINDING RING HDPE NOTE Item 11 GRINDING CHAMBER HOUSING is no longer available Grinders that require this part must be retrofitted to the Type B configuration shown in Fig 4 The existing motor can still be used To retrofit the grinding chamber order part K078 GRINDING CHAMBER RETROFIT KIT _ The complete Type A MOTOR ASSEMBLY shown above is no longer available Grinders that require a new motor must be retrofitted to the Type B motor shown in Fig 4 To retrofit the entire motor assembly order part 077 MOTOR ASSEMBLY RETROFIT KIT Figure 4 GR 1 GR 2 Motor Assy B Part 102376 ASSEMBLY MOTOR 74HP 120VAC 60Hz Part 102377 ASSEMBLY MOTOR 74HP 230VAC 50Hz EXPORT ONLY NOTE ITEM 2 IS OPTIONAL NOT REQUIRED FOR REVISED GRINDING DISCS Description ASSY GRINDING HOUSING GR1 2 RING HDPE GRINDING GRINDING DISC SET OF TWO SCREW M4 x 0 7 x 10mm LG PAN HEAD SLOTTED 18 8 SS 6 6 56026 COVER GRINDING CHAMBER HOUSING 7 56020 NUT M16x1 JAM BEARING ASSEMBLY factory assembled includes 8 adjustment shaft and 9 bearing WASHER GR 1 GR 2 COUNTERSUNK SCREW M5 X 10 FLAT HEAD SLOTTED 12 4 56013 WASHER M5 SERRATED BELLEVILLE 13 4 56012 SCREW M5 X 12 METRIC HEX HEAD SPRING GRINDER AUGER 6 MM PITCH 15 1 002409 WELDMENT COF
13. FEE GUIDE GR1 2 MOTOR Seg80 4A 120V 60Hz MOTOR Seg80 4A 230V 50 2 EXPORT VERSION ONLY Llor A fa 11 5 GR 2 2 GR 2 3 Hopper Assembly Part A066 6 1 8010 8 3 982075 9 1 97033 Description LID HOPPER GR2 BODY HOPPER GR2 GUILLOTINE SCREW 6 x 3 8 PHIL TRUSS HEAD SELF TAPING BRACKET GUILLOTINE SPRING GR2 SPRING EXPANSION 3 8 x 026 x 1 3751 0 60 LBS IN WASHER SHOULDER 3 32L 375A 1 16B 248C 136D SCREW 6 x 5 8 TRUSS HEAD PHILLIPS SHEET META BUMPER 1 2 DIA FLAT TOP ADHESIVE BACKED BLK 12 Wiring Diagrams GR 1 Effective August 2003 START START START LARGE MEDIUM SMALL 3 BACK VIEW BACK VIEW RED 15 WHITE 2 W NTEGRATED THERMAL PROTECTOR SWITCH GREEN 16 AWG LI 20 Li N HEYCQ 0 J RECEPTACLE CONTROL BOARD LEGEND eet WIRE NUT CONNECTION OPTIONAL 9 O SET FOOD EQUIPMENT TECHNOLOGIES COMPANY INC FETC 986 Gh BENE NUS IRE IL 60069 USA fetco com GR 2 Effective August 2003 LEFT SIDE SOLENOID START START ART LARGE MEDIUM SMALL 9 9 O BACK VIEW GREEN 16 AWG GON Li N RECEPTACLE LEGEND WIRE NUT CONNECTION OPTIONAL RIGHT SIDE SOLENOID START START LARGE MEDIUM SMALL o oO BACK VIEW WHITE YELLOW WHIT ye BRGWNZWHITI 2 9 5
14. T OF 2 FOR A MOTORS ONLY 6 1 23086 COFFEE OUTLET GR1 GR2 FOR TYPE A MOTORS ONLY 7 2 82070 SCREW M3x8 PAN HD PHIL 18 8 S S M S FOR TYPE A MOTORS ONLY 8 1 03185 PLATE GRINDER MOTOR 9 2 29015 TAPE NOISE DAMPING 10 1 23070 FUNNEL HOPPER GR 1 11 2 82059 SCREW 8 32 X 3 8 TRUSS HD PHIL MACHINE 12 1 28002 WINDOW GR 1 14 2 83031 WASHER 3 8 S S FLAT 15 2 83032 WASHER 3 8 S S REG SPRING LOCK 16 2 82069 SCREW 3 8 16x 3 4 LG HEX HD CAP S S m 5 23094 CAPACITOR 220VAC EXPORT VERSION ONLY 23093 CAP CAPACITOR 120VAC 20 67001 120VAC VERSION 40 450VAC 50 60Hz TYPE A 1 67002 220VAC 12uF 450VAC 50 60 Hz EXPORT VERSION ONLY MOTORS 67003 CAPACITOR 100VAC 50uF 250VAC 50Hz JAPAN VERSION ONLY 20 1 67004 CAPACITOR 120VAC VERSION 80uF 450VAC 50 60Hz TYPEB 1 67005 CAPACITOR 230VAC VERSION 18uF 450VAC 50Hz EXPORT VERSION ONLY MOTORS 2 67004 CAPACITOR 120VAC VERSION 80uF 450VAC 50 60Hz JAPAN VERSION 2 REQD 21 1 83033 WASHER M8 REG S S SPRING LOCK 22 1 84023 NUT HEX 8 S S 23 8 82071 SCREW 6 32 x 3 8 PAN HD PHIL w DOUBLE ACTION SPRING WSHR 24 1 01407 COVER REAR GR 1 63038 CORD AMERICAN 6 FT LG 63041 CORD EUROPEAN 6 5FT LG 25 1 63042 CORD AUSTRALIAN 6 5 FT LG 63044 CORD SOUTH AFRICA 6 5 FT LG 63043 CORD ENGLAND 6 5FT LG id 2 401204 WIRING DIAGRAM UNIVERSAL 1 401205 WIRING DIAGRAM 220 240 VAC 50 60 HZ 2 5 AMP 27 1
15. caused by improper installation will not be covered under warranty 1 Inspect the container for visual or hidden damage 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 Caution Never 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 Warning To prevent 5 Following the operating procedures below test grinder for proper electrical shock this operation unit must be properly 6 Ifyou need further assistance please call our Technical Support grounded Dept at 800 338 2699 or e mail techsupport fetco com 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
16. l number is displayed GR 1 2 12 GR 2 3 23 etc gt 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 CONTROL BOARD Da Q 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 2 N x lt V R ki followed by the current motor delay setting in seconds SWITCH DESIGNATIONS GR 2 2 amp 2 3 only 8 0 Model GR 1 2 13 22 23 Press UP and DOWN to adjust Left Small LH1 LH1 LH1 LH1 Left Med LH2 LH2 gt Press SET The first switch number will be displayed briefly followed by the current setting in seconds LH1 Left Large LH3 LH3 LH3 LAS Example LH1 Left side small batch 7 0 seconds Son um RAT RA ig ed Press SET The next switch number will be displayed Ban briefly followed by the current setting eight Large Ui Jn Example LH2 Left side medium batch 13 5 seconds 13 5 gt Continue this way until
17. o test the setting Repeat the above steps if necessary cid em NO To reset the grind setting to the factory default e Follow steps 1 4 of the grind adjustment procedure e 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 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 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 gt 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 gt Press SET The display will read TYP briefly followed by the currently programmed model number Press the UP and DOWN buttons until the correct mode
18. sued for all parts replaced under warranty 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
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