Bunn MHG Service manual
Contents
1.2. MHG for use with Smart Funnel INSTALLATION amp OPERATING GUIDE BUNN O MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 PHONE 217 529 6601 FAX 217 529 6644 WWW bunn com To ensure you have the latest revision of the Operating Manual or to view the Illustrated Parts NN Catalog Programming Manual or Service Manual please visit the Bunn O Matic website at www bunn com This is absolutelv FREE and the quickest wav to obtain the latest catalog and manual updates For Technical Service contact Bunn O Matic Corporation at 1 800 286 6070 36529 0000K 06 09 2004 Bunn O Matic Corporation BUNN 0 MATIC COMMERCIAL PRODUCT WARRANTY Bunn O Matic Corp BUNN warrants equipment manufactured by it as follows 1 All equipment other than as specified below 2 years parts and 1 year labor 2 Electronic circuit and or control boards parts and labor for 3 years 3 Compressors on refrigeration equipment 5 years parts and 1 year labor 4 Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis parts and labor for 3 years or 30 000 pounds of coffee whichever comes first These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period
3. few cvcles until all coffee in the grind chamber is dispensed and disconnect the grinder from the power source WARNING Prior to cleaning the grind chamber unplug the grinder 2 3 4 5 Remove the funnel and filter and discard anv remaining coffee grounds Remove the hoppers sliding all the wav forward Remove the hopper lid from the hopper Clean and sanitize the hoppers and lids Care should be taken not to scratch the hoppers with anv abrasive materials NOTE Bunn O Matic recommends the 3 step method for cleaning and sanitizing the hoppers and lids The 3 step method consists of hot soapy water using an approved detergent a fresh water rinse and an aqueous sanitizing solution using an approved non chlorine sanitizer 6 f 8 9 10 11 12 13 14 Remove the upper front inspection panel Remove the two screws holding the front cover to the burr housing Carefully remove the burr housing front cover Clean inside surface with a dry stiff non metallic bristle brush and wipe with a dry clean cloth Carefully remove the rotor cup shear plate burr rotor and motor shaft extension from the grinder Clean all parts with a dry stiff non metallic bristle brush and wipe with a dry clean cloth Clean the grind chamber with a dry stiff non metallic bristle brush and wipe with a dry clean cloth Reinstall the motor shaft extension burr rotor shear plate rotor cup and front cover to the burr housing Reinstall t
4. short pause the display will show four rows of dashes When the dashes appear release the STOP and GRIND buttons then press and release the STOP button The display will count down then return to the normal operating mode The grinder should now be set to match the coffee names with the numbers on the chart below COFFEE CHART NUMBER NAME NUMBER NAME 1 Regular 15 Jamaica Blue Mtn 2 Decaf 16 Guatemalan 3 Colombian 17 Light Roast 4 Colombia Supremo 18 Dark Roast 5 Costa Rican 19 Expresso 6 Ethiopian 20 Amaretto 7 Kona 21 Hazelnut 8 Kenva AA 22 French Vanilla 9 Sumatran 23 Irish Creme 10 French Roast 24 Vanilla Nut 11 Italian Roast 25 Caramel 12 Mocha Java 26 Raspberrv 13 House Blend 27 Almond 14 Breakfast Blend 28 Dark Mtn Roast 12 36529 040907 COMMUNICATING WITH THE GRINDER Continued Entering A Coffee Name Using A Recipe Card Press the STOP button and place the chip portion of the card under the sensor coil on the front of the grinder The LCD display will enter the RECIPE CARD menu WHEN THE RECIPE IS SAVED IF THE HOPPER IS IN PLACE ON THE GRINDER THE COFFEE NAME CAN BE m WRITTEN TO THE HOPPER CHIP L H a EXIT MENU a TA TA 77 TA fc e e e e e e 4 9 4 9 4 9 4 9 9 e e e e e e N A ssl _ N P2821 13 36529 040907
5. L THREE BATCH SIZE LEDS WILL FLASH Ripe aaa PRESS BATCH SIZE BUTTON TO SELECT SCRO EN ENE BATCH SIZE TO SET AFTER FIRST BATCH co SIZE IS SET ADDITIONAL BATCH SIZES CAN BE SET BY PRESSING APPROPRIATE BATCH SIZE BUTTON PRESS DONE AFTER ALL DESIRED BATCH SIZES HAVE BEEN SET PRESSING THE UPPER e RIGHT HIDDEN BUTTON 7 WILL FORWARD TO SERVICE TOOLS CYCLES TO THE NEXT COFFEE NAME ON THE MENU P2823 10 36529 040907 COMMUNICATING WITH THE GRINDER Continued To Restore Factory Defaults Or Test Outputs and Switches PRESS AND HOLD RIGHT HIDDEN BUTTON TO ENTER THE SET UP MENUS menus t EXIT SET UP MENUS EXIT 3 UP MENUS J CHE AG GI IE PRESSING ANV BUTTON EXCEPT THE RIGHT HIDDEN BUTTON WILL DISPLAY THE BUTTON NAME ON THE SCREEN PRESS CENTER HIDDEN BUTTON TO SCROLL TO NEXT FREQUENCY TEST P2824 36529 040907 COMMUNICATING WITH THE GRINDER Continued Resetting The Grinder Memory To Match Chart Below Unplug grinder from the outlet Press in and hold both the STOP and GRIND buttons and plug cordset into the outlet After a
6. This warranty does not apply to any equipment component or part that was not manufactured by BUNN or that in BUNN s judgment has been affected by misuse neglect alteration improper installation or operation improper maintenance or repair damage or casualty This warranty is conditioned on the Buyer 1 giving BUNN prompt notice of any claim to be made under this warranty by telephone at 217 529 6601 or by writing to Post Office Box 3227 Springfield Illinois 62708 3227 2 if requested by BUNN shipping the defective equipment prepaid to an authorized BUNN service location and 3 receiving prior authorization from BUNN that the defective equipment is under warranty THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY WRITTEN OR ORAL EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE The agents dealers or employees of BUNN are not authorized to make modifications to this warranty or to make additional warranties that are binding on BUNN Accordingly statements by such individuals whether oral or written do not constitute warranties and should not be relied upon If BUNN determines in its sole discretion that the equipment does not conform to the warranty BUNN at its exclusive option while the equipment is under warranty shall either 1 provide at no charge replacement parts and or labor during the applicable parts and labor warranty per
7. able or damaged labels S WARNING To reduce the risk of electric shock Use only on a properly protected circuit capable of the rated load Electrically ground the chassis Follow national local electrical codes Do not use near combustibles PERSONAL INJURY HAZARD do not remove or open cover No user serviceable parts inside Authorized service personnel only Disconnect power before servicing KEEP FINGERS AND FOREIGN OBJECTS OUT OF HOPPER OR CHUTE OPENING An extension cord when used must be shorter than 20 feet if 16 gage 3 conductor wire or shorter than 10 feet if 18 gage 3 conductor wire FAILURE TO COMPLY RISKS EQUIPMENT 05876 0000 37881 0000 READ THE ENTIRE OPERATING MANUAL INCLUDING THE LIMIT OF WARRANTY AND LIABILITY BEFORE BUYING OR USING THIS PRODUCT 20545 00000 01 04 1990 Bunn O Matic Corporation e 20545 0000 00824 0000 3 36529 062309 ELECTRICAL REQUIREMENTS Refer to Data Plate on the Grinder and local national electrical codes to determine circuit requirements This grinder has an attached cordset and requires 2 wire grounded service rated 120 volts ac 15 amp single phase 60 Hz for domestic grinders 230 volts ac 10 amp single phase 50 Hz for most international grinders 100 volts ac 15 amp single phase for some international grinders CE REQUIREMENTS This appliance must be installed in locations where it can be overseen by traine
8. d personnel For proper operation this appliance must be installed where the temperature is between 5 C to 35 C Appliance shall not be tilted more than 10 for safe operation e An electrician must provide electrical service as specified in conformance with all local and national codes This appliance must not be cleaned by water jet This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given instructions concerning use of this appliance by a person responsible for its safety e Children should be supervised to ensure they do not play with the appliance e f the power cord is ever damaged it must be replaced by the manufacturer or authorized service personnel with a special cord available from the manufacturer or its authorized service personnel in order to avoid a hazard OPERATING CONTROLS c Grind Pad a Pressing initiates a timed grind cycle Stop Pad b d Pressing ends the operation of the grinder PAD c Pressing the pad allows programming access see page 8 Hopper Batch Selector Pads d These pads are located on the funnel depictions on each side of the grinder with a total of 6 pads Selecting one of these pads will select the amount of grind and side from which to grind Example Selecting the lower pad on the left side will grind enough beans from the left hopper of the grin
9. der to brew the amount programmed into grinder Control Board The control board determines the amount of beans that will leave the hopper in a grind cycle The timer portion can be adjusted to dispense a different amount from each hopper and each batch size The scale is from 0 4 to 99 9 seconds Refer to the Adjustments section for timer setting chart page 9 4 36529 062309 Fons INITIAL SET UP amp PROGRAMMING Grinder will not operate unless a hopper with a coffee name programmed into the chip is in place on the grinder Refer to Setup Menu NAME HOPPER to program hopper chip Remove top lid Clear all foreign objects and shipping material from the hopper compartment Plug in the grinder Place a hopper on top of the grinder with rear of hopper in front of metal gate and inside of center divider Push hopper straight back until fully engaged on top of grinder When hopper is fully engaged LCD screen will display coffee name To remove hopper grasp handle and pull straight forward until rear of hopper is clear of metal gate then remove Fill the hopper compartments with whole bean coffee Capacity 5 pounds each The grinder is now ready for use 5 36529 020508 CLEANING WARNING Unplug the grinder before the removal of any panel or grind chamber housing parts 1 Emptv all beans from hopper s Plug in the grinder place an emptv funnel with filter into the funnel rails Press and release the GRIND button Run a
10. eans to drop into the grinding chamber A second time setting for each batch determines how long the grind motor continues to run after the slide gate closes This time is set long enough to insure that all the beans dropped into the grind chamber are ground and dispensed 1 Determine the grind setting The factory setting is drip to determine other settings refer to the previous section 2 Usethe table below to find approximate timer setting for the grind and amount of coffee desired 3 Inthe Set up Menu go to REVIEW RECIPES MODIFY See page 10 to change grind and run times for each hopper NOTE While in the setup mode if no buttons are pushed for 60 seconds the grinder will return to normal operations retaining any settings made while in the setup mode APPROXIMATE TIMER SETTINGS IN SECONDS Weight Fine Drip Regular ounces 7 8 12 Hash mark settings Refer to Burr Adjustment section These are approximate timer settings for regular roast coffee Settings will vary with coffee types and roasts 9 36529 040907 COMMUNICATING WITH THE GRINDER Continued To Review Or Change Grind Time PRESS AND HOLD RIGHT HIDDEN BUTTON TO ENTER THE SET UP MENUS PRESSING THE RIGHT HIDDEN BUTTON THREE TIMES IN THIS MENU WILL TAKE YOU TO THE SERVICE TOOLS MENU r Pressing NO will forward to SERVICE TOOLS Y AL
11. er motor ON After all of the coffee in the grind chamber is used slowly turn the adjusting screw in a clockwise direction until a metallic whine is heard due to the rubbing of the grinding burrs It may be necessary to start more than one grind cycle to obtain this sound Turn plastic grind indicator until screw slot lines up with 0 on the indicator The following settings approximately correspond to the CBC recognized grinds P2820 Turn the adjusting screw counterclockwise to the desired setting as noted below FINE GRIND Rotate the adjusting screw 7 hash marks in a counterclockwise direction DRIP GRIND Rotate the adjusting screw 8 hash marks in a counterclockwise direction REGULAR COARSE GRIND Rotate the adjusting screw 12 hash marks in a counterclockwise direction 7 36529 020508 COMMUNICATING WITH THE GRINDER To Write A Name To Hopper PRESS AND HOLD RIGHT HIDDEN BUTTON TO ENTER THE SET UP MENUS To REVIEW RECIPES on Page 10 PRESSING EITHER PREV OR NEXT WILL SCROLL TO ANOTHER COFFEE FLAVOR HOPPER IN PLACE gt 2822 8 36529 040907 COMMUNICATING WITH THE GRINDER Continued Timer Adjustment Control Board Three different batch settings are selectable for each hopper Each batch is independently adjustable by setting the length of time a slide gate opens to allow b
12. he upper front inspection panel Refer to the Adjustment section of the Operating and Service manual for burr adjustments Clean all exterior surfaces using a damp cloth rinsed in any mild nonabrasive liquid detergent Care should be taken not to scratch the grinder with any abrasive material Replace the hoppers and fill with fresh whole bean coffee Replace the hopper lids 6 36529 020508 Qu Poo NS COFFEE GRINDING Visually inspect the selected hopper for an ample supply of whole bean coffee Place a paper filter into the brew funnel The filter must not be folded over or tilted to one side Insert the funnel into the funnel rails and push until it stops Choose the batch size and side of grinder to use Press GRIND The grinding action will stop automatically after the preset amount of ground coffee is dispensed into the funnel Pressing the STOP button will terminate a grind ADJUSTMENTS The grind can be set from very fine to very coarse The amount may be adjusted for use in most commercial coffee brewers The following procedures should be used to make adjustments A change in the burr adjustment will also change the amount dispensed Any adjustment of the burrs should be followed by an adjustment of the timer Burr Adjustment 1 2 3 Remove the two screws from front control panel Hang the panel under metal hooks at bottom of opening Enter the Setup Menu TEST OUTPUTS GRIND MOTOR See page 11 Turn grind
13. iods specified above to repair the defective components provided that this repair is done by a BUNN Authorized Service Representative or 2 shall replace the equipment or refund the purchase price for the equipment THE BUYER S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS EQUIPMENT WHETHER DERIVED FROM WARRANTY OR OTHERWISE SHALL BE LIMITED AT BUNN S SOLE OPTION AS SPECIFIED HEREIN TO REPAIR REPLACEMENT OR REFUND In no event shall BUNN be liable for any other damage or loss including but not limited to lost profits lost sales loss of use of equipment claims of Buyer s customers cost of capital cost of down time cost of substitute equipment facilities or services or any other special incidental or consequential damages BrewWISE BrewLOGIC BrewMETER BrewWIZARD Bunn Gourmet BUNN Gourmet Ice BUNN Pour O Matic BUNN Bunn OMatic Bunn O Matic BUNNlink BUNNserve BUNNSERVE BUNN Espress Cool Froth DBC Dr Brew Dual Easy Clear EasyGard Easy Pour FlavorGard Gourmet Ice Gourmet Juice High Intensity IMIX Infusion Series Intellisteam Quality Beverage Equipment Worldwide The Mark of Quality in Beverage Equipment Worldwide My Caf PowerLogic Safety Fresh Scale Pro Silver Series Single Smart Funnel Smart Hopper SmartWAVE Soft Heat SplashGard System Ill ThermoFresh 392 AutoPOD AXIOM Beverage Profit Calculator Beverage Bar Creator BUNNsource Coffee At Its Best Digita
14. l Brewer Control Nothing Brews Like a BUNN Pouring Profits Pulse Wave Signature Series Smart Heat Tea At Its Best The Horizontal Red Line Titan Ultra are either trademarks or registered trademarks of Bunn O Matic Corporation 2 36529 012609 CONTENTS User IUE CERNERET E 3 Electrical Requirements a 4 GE EG a OM 4 Operating ONS tt 4 Initial Set Up amp POEM Lilian i 5 MNT E TT 6 ERE TUDIN f Adjustments zeeer ad jA 7 Communicating with the Grinder less sit RR 8 INTRODUCTION This equipment will store up to five pounds of whole bean coffee in a hopper and grind it to a preset grind and amount into an awaiting funnel and filter from most commercial drip coffee brewers The equipment is only for indoor use on a sturdy counter or shelf Adequate space must be available above the grinder to raise the lids when adding beans Use only with whole bean coffee The grind is preset at the factory to drip specifications as set forth by the United States Department of Commerce and adopted by the Coffee Brewing Center of the Pan American Coffee Bureau Adjustments may be made to alter both the amount and grind from the factory setting USER NOTICES Carefully read and follow all notices on the grinder and in this manual They were written for your protection All notices on the grinder are to be kept in good condition Replace any unread
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