Bunn VPR Coffeemaker User Manual
Contents
1. OPERATING amp SERVICE MANUAL BUNN O MATIC CORPORATION OF CANADA LTD 280 INDUSTRIAL PKWY S AURORA ONTARIO LAG 319 PHONE 905 841 2866 FAX 905 841 2775 10053 7000J 11 01 1996 0 Corporation www bunnomatic com INTRODUCTION This equipment will brew a half gallon batch of coffee into an awaiting dispenser Itis only for indoor use on a sturdy counter or shelf WARRANTY Bunn O Matic Corp Bunn warrants the equipment manufactured by itto be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation In addition 1 Bunn warrants electronic circuit and or control boards to be commercially free from defects in material and workmanship for two years from the date of installation 2 Bunn warrants the compressor on refrigeration equipment to be commercially free from defects in material and workmanship for two years from the date of installation 3 Bunn warrants that the grinding burrs on coffee grinding equipment will grind coffee to meet original factory screen sieve analysis for three years from date of installation or for 30 000 pounds of coffee whichever comes first This warranty does not apply to any equipment component or part that was not manufactured by Bunn or that in Bunn s judgement has been affected by misuse neglect alteration improper installation or operation improper maintenance or repair2. SWITCH BRN BLK BRN BLK 7 LOWER RIGHT WARMER 10049 0000 1 97 1988 BUNN O MATIC CORPORATION SCHEMATIC MRINGDIAGRAM L1 VPRA GRN YEL BLK id RED THERMAL THERMAL SW amp THERMOSTAT CUT OFF S n CUT OFF BLU BLK RED 0 se TANK EXTER ON OFF SWITCH WARED 1 RED BLK H RED D D UPPER WARMER 220 VOLTS AC 2 WIRE SINGLE PHASE Page 16 10053 073001 SCHEMATIC WIRING DIAGRAM VPSA GRN YEL IND L1 L2 BLK 16 RED SW THERMOSTAT THERMAL THERMAL page CUT OFF d 2000W RED dam TANK HEATER IND BRIDE IND RED BLK Vl SWITCH BLK a ONJOEE Erud BRN BLK TT RED i D D ee LOWER RIGHT WARMER 220 VOLTS AC 2 WARE SINGLE PHASE Page 17 10053 073001
3. WARMERS AND SURFACES ARE HOT x 400833 7001 POUR IN WATER ONLY Page 3 10053 022300 ELECTRICAL REQUIREMENTS CAUTION The brewer must be disconnected from the power source until specified nitial Set Up The brewer has an attached cordset and requires 2 wire grounded service rated 120 volts ac 15 amp single phase 60 Hz models require 2 wire grounded service rated 220 240 volts ac single phase 50 Hz Proceed as follows Electrical Hook Up Mode Only CAUTION Improper electrical installation will damage electronic components 1 Anelectrician must provide electrical service as specified 2 Using a voltmeter check the voltage and color coding of each conductor at the electrical source 3 Plug the power cord into the power connector located in the base on the rear of the brewer INTIAL SET UP CAUTION The brewer must be disconnected from the power source throughout the initial set up except when specified in the instructions 1 Insert an empty funnel into the funnel rails 2 Place an empty dispenser under the funnel 3 pitchers of tap water into the screened area on top of the brewer Allow approximately two minutes between pitchers for water to flow into the tank While the third pitcher of water is entering the tank the tank will fill to capacity and the excess will flow from the sprayhead out of the funnel and into the dispenser 4 When the flow of water fro
4. cut off is operating properly If continuity is not present as described replace the thermal cut off Removal and Replacement 1 Disconnect the thermal cut off from the tank heater and the red wire from the power connec tor or the blue black wire from the control ther mostat 2 Install new thermal cut off 3 Refer to Fig 12 when reconnecting wires Thermal Cut off from Tank Thermal Cut off from Tank Heater to Red Lead from Heater to BLU BLK Lead from Control Thermostat Power Connector VPRA VPSA FIG 12 THERMAL CUT OFF TERMINALS 10053 073001 14 SCHEMATIC WIRING DIAGRAM VPR Prior to Serial 4 VPRO270000 GREEN N SW amp THERMOSTAT LIMIT RE THERMOSTAT PLURK P lt BLK WHI RED pue WHI RED vio pg _ LOWER WARMER WHI ON OFF UPPER WARMER SCHEMATIC WIRING DIAGRAM VPR Serial 270000 amp up L1 GREEN N li SW amp THERMOSTAT LIMIT m THERMOSTAT BLK j BLU BLK de ei BLK ON OFF SWITCH WHI RED ON OFF SWITCH UPPER WARMER 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ Page 15 10053 073001 SCHEMATIC WIRING DIAGRAM VPS GREEN 59 510 L1 SW amp THERMOSTAT LIMIT en THERMOSTAT i B e e e ei SWITCH WHI RED D WHI RED DN ND SWITCH VIO Y TY ONJF
5. 120 volt models b 220 volts ac for two wire 220 volt models 4 Disconnect the brewer from the power source If voltage is present as described proceed to 5 If voltage is not present as described refer to the wiring diagrams and check the brewer wiring harness 5 Locate the blue black wire on the control thermo Stat 6 Gently remove the capillary bulb and grommet from the tank 7 Check the voltage across the blue black wire of the control thermostat and the white wire on the tank heater or red wire on the tank heater with a voltmeter when the control thermostat is turned Page 9 ON fully counterclockwise for thermostat with tee handle control or fully clockwise for thermo stats with control knob Plug in the brewer to the power source The indication must be a 120 volts ac for two wire 120 volt models b 220 volts ac for two wire 220 volt models Voltage must not be present across these terminals when the thermostat is turned OFF fully counter clockwise 8 Disconnect the brewer from the power source If voltage is presentas described reinstall the capillary tube into the tank to the line 4 5 above the bulb the control thermostat is operating properly If voltage is not present as described replace the thermostat Removal and Replacement 1 Remove wires from control thermostat leads or terminals BLU to BLU BLK Lead from Limit Thermostat BLK to BLK Lead from Terminal Bl
6. ION REPLACEMENT OR REFUND In no eventshall 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 Page 2 10053 073001 USER NOTICES Carefully read and follow all notices in this manual and on the equipment All labels on the equipment should be kept in good condition Replace any unreadable or damaged labels Fill water tank before turning on thermostat or connecting appliance to power source Use only on a properly protected circuit capable of the rated load Electrically ground the chassis Follow natinal local electrical codes 00831 0002 Do not use near combustibles FAILURE TO COMPLY RISKS EQUIPMENT DAMAGE FIRE OR SHOCK HAZARD READ THE ENTIRE OPERATING MANUAL BEFORE BUYING OR USING THIS PRODUCT THIS APPLIANCE 1 HEATED WHENEVER CONNECTED TO A POWER SOURCE 00831 0000F 3 98 1988 BUNN O MATIC CORPORATION DISCARD DECANTER IF CRACKED SCRATCHED BOILED DRY HEATED WHEN EMPTY 00658 7000 USED ON HIGH FLAME FUNNEL CONTENTS ELECTRIC ELEMENTS READ THE ENTIRE OPERATING MANUAL BEFORE USING THIS PRODUCT FAILURE TO COMPLY RISKS INJURY PN 00658 0000F 6 98 1985 BUNN O MATIC CORPORATION 2 12364 7000
7. Place an empty funnel on an empty dispenser beneath the sprayhead Pour in a pitcher of tap water and check the water temperature im mediately below the sprayhead with a thermometer The reading should not be less than 195 F Adjust the control thermostat to increase the water temperature Replace if necessary 10053 011597 TROUBLESHOOTING cont PROBLEM Dry coffee grounds remain in the funnel Brewer is making unusal noises Cool beverage serving tempera ture PROBABLE CAUSE 1 Funnel Loading 1 Tank Heater 1 ON OFF Warmer Switch 2 Warmer Element s Page 7 REMEDY The BUNN paper filter must be centered in the funnel and the bed of grounds leveled by gently shak ing Remove and clean lime off the tank heater See page 12 Refer to Service ON OFF Warmer Switch for testing procedures See page 11 Refer to Service Warmer Element s for testing proce dures See page 14 10053 011597 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessary Refer to Troubleshooting for assistance in determining the cause of any problem WARNING Inspection testing and repair of electri cal equipment should be performed only by qualified service personnel The brewer should be discon nected from the power source when servicing except when electrical tests are required and the test proce dure specifically stat
8. actions resulting in serious leaks 2 Control Thermostat Page 5 REMEDY Refer to Service Limit Thermo stat or Thermal Cut Off for testing procedures See page 10 or 13 Refer to Service Control Ther mostat for testing procedures See page 9 Refer to Service Tank Heater for testing procedures See page 12 Inspect the tank assembly for excessive lime deposits Delime as required Refer to Service Control Ther mostat for testing procedures See page 9 10053 022300 TROUBLESHOOTING cont PROBLEM Dripping from sprayhead Beverage overflows dispenser Weak beverage PROBABLE CAUSE 1 Lime Build up CAUTION Tank and tank components should be delimed regularly depending on local water conditions Excessive mineral build up on stainless steel surfaces can initiate corro sive reactions resulting in serious leaks 1 Dispenser 1 Filter Type 2 Coffee Grind 3 Sprayhead 4 Funnel Loading 5 Water Temperature Page 6 REMEDY Inspect the tank assembly for excessive lime deposits Delime as required The dispenser must be com pletely empty before starting a brew cycle BUNN paper filters must be used for proper extraction fine or drip grind must be used for proper extraction A six hole stainless steel spray head must be used for proper extraction The BUNN paper filter must be centered in the funnel and the bed of grounds leveled by gentle shak ing
9. damage or casualty THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY WRITTEN OR ORAL EXPRESS CR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF ETHER MERCHANTABILITY OR FITNESS FOR APARTICULAR 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 The Buyer shall give Bunn prompt notice of any claim to be made under this warranty by telephone at 905 841 2866 or by writing to 280 Industrial Pkwy S Aurora Ontario L4G 3 9 If requested by Bunn the Buyer shall ship the defective equipment prepaid to an authorized Bunn service location If Bunn determines in its sole discretion that the equipment does not conform to the warranty Bunn shall repair the equipment with no charge for parts during the warranty period and no charge for labor by a Bunn Authorized Service Representative during the warranty period If Bunn determines that repair is not feasible Bunn shall at its sole option replace the equipment or refund the purchase price for the equipment THEBUYER S REMEDY AGAINST BUNN FOR THE BREACH OF ANY CBLIGATIONARISINGOUT OF THE SALE OF THIS EQUIPMENT WHETHER DERIVED FROM WARRANTY OR OTHERWISE SHALL BE LIMITED AS HEREIN TO REPAIR CR AT BUNN S SOLE OPT
10. es to plug in the brewer COMPONENT ACCESS WARNING Disconnect the brewer from the power source before the removal of any panel or the replace ment of any component All components are accessible by the removal of the top cover fill basin and warmer assemblies The top cover is attached with two 4 40 screws FIG 1 COMPONENT ACCESS Page 8 The tank inlet fitting secures the fill basin to the tank lid P2413 FIG 2 FILL BASIN REMOVAL Contents Control Thermostat 9 Limit Thermostat VPR 10 ON OFF Switch Warmers 11 Tank Heater n 12 Thermal Cut Off VPRA VPSA 13 Warmer Elements 14 Wiring Diagrams 15 amp 16 10053 073001 SERMCE cont CONTROL THERMOSTAT P2414 FIG 3 CONTROL THERMOSTAT Location The control thermostat is located inside the hood on the left end of the mounting bracket Test Procedures 1 Disconnect the brewer from the power source 2 Locate the black wire on the control thermostat 3 Check the voltage across the black wire on the control thermostat and the white wire on the tank heater or the red wire on the tank heater with a voltmeter Plug in the brewer to the power source The indication must be a 120 volts ac for two wire
11. m the funnel stops connect the brewer to the power source and wait approximately twenty minutes for the water in the tank to heat to the proper temperature Some water will drip from the funnel during this time this is due to expansion and should not occur thereafter 5 Pour one pitcher of tap water into the screened area on top of the brewer 6 When water has stopped flowing from the funnel let the water in the tank reheat to the proper temperature 7 Empty the dispenser The brewer is now ready for use in accordance with the coffee brewing instructions below NOTE The control thermostat will need to be adjusted downward to compensate for high altitudes Refer to Steaming and spitting around the funnel on page 5 for instructions COFFEE Insert a BUNN filter into the funnel Pour the fresh coffee into the filter and level the bed of grounds by gently shaking Slide the funnel into the funnel rails Place an empty dispenser beneath the funnel Pour one pitcher of tap water into the screened area on top of the brewer When brewing is completed simply discard the grounds and filter gre WINS CLEANING 1 The use of a damp cloth rinsed in any mild non abrasive liquid detergent is recommended for cleaning all surfaces on Bunn O Matic equipment 2 Check and clean the sprayhead The sprayhead holes must always remain open 3 Withthesprayhead removed insert the deliming spring provided all the way into the sprayhead t
12. mmeter If continuity is present as described the limit thermo Stat is operating properly If continuity is not present as described replace the limit thermostat Removal and Replacement 1 Remove all wires from limit thermostat termi nals 2 Carefully slide the limit thermostat out from under the retaining clip and remove limit thermo stat 3 Carefully slide the new limit thermostat into the retaining clip 4 Refer to Fig 6 when reconnecting the wires BLU BLK to Control Thermostat BLK to Tank Heater FIG 6 LIMIT THERMOSTAT TERMINALS j 10053 073001 11 SERMCE cont 1 ut P2414 FIG 9 TANK HEATER Location The tank heater is located inside the tank and secured to the tank lid Test Procedures 1 2 3 Disconnect the brewer from the power supply Check the voltage across the black and white wires on 120 volt models or the black and red wires for 220 volt models with a voltmeter Plug in the brewer to the power source The indication must be a 120 volts ac for two wire 120 volt models b 220 volts ac for two wire 220 volt models Disconnect the brewer from the power source If voltage is present as described proceed to 4 If voltage is not present as described refer to the Wiring Diagrams and check wiring harness 4 5 Disconnect the black wire and the white wire or red wire from the tank heater terminals Check for continuity across
13. ock EARLY MODELS BLU BLK to Limit Thermostat or Thermal Cut Off P1252 FIG 4 CONTROL THERMOSTAT TERMINALS 10053 073001 SERVICE cont CONTROL THERMOSTAT cont 2 Remove the thermostat capillary bulb by firmly pulling up on the capillary at the tank lid This will disengage the grommet from the tank lid 3 Remove the two 8 32 screws securing the con trol thermostat to the mounting bracket inside the hood 4 Slide the grommet to the line 4 5 above the bulb on the new capillary tube 5 Insert the capillary bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid 6 Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical posi tion NOTE The capillary tube must be clear of any electri cal termination and not kinked 7 Using two 78 32 screws secure the control ther mostat to the mounting bracket inside the hood 8 Refer to Fig 4 when reconnecting the wires 9 Adjust the control thermostat as required LIMIT THERMOSTAT VPR VPS P2414 FIG 5 LIMIT THERMOSTAT Location The limit thermostat is located inside the hood on the right side of the tank lid Page 10 Test Procedures 1 Disconnect the brewer from the power source 2 Disconnect the blue black and black wires from the limit thermostat 3 Check for continuity across the limit thermostat terminals with an oh
14. rmostat or thermal cut off tank heater and control thermo stat See limit thermostat thermal cut off and control thermostat sections in this manual when reconnecting wires Install fill basin secure with tank inlet fitting and gasket Refer to Fig 10 when reconnecting the tank heater wires 10053 073001 SERVICE cont TANK HEATER Cont BLK to Limit Thermostat 120V Models Thermal Cut off to Blu BLK Lead From Control Thermostat 220V Two Wire Models WHI to WHI Lead on 4 Power Cord 120V Models Thermal Cut off to Red from Power Connector 220V Two Wire Models FIG 10 TANK HEATER TERMINALS THERMAL CUT OFF VPRA VPSA FIG 11 THERMAL CUT OFF Page 13 The thermal cut outs are located inside the hood connected to the tank heater terminals Test Procedures 1 Disconnect the brewer from the power source 2 Disconnect the thermal cut off from the tank heater and the red wire from the power connec tor 3 Check for continuity across the thermal cut off terminals with an ohmmeter If continuity is present as described the thermal cut off is operating properly If continuity is not present as described replace the thermal cut off 4 Disconnect the thermal cut off from the tank heater and blue black from the control thermo Stat 5 Check for continuity across the thermal cut off terminals with an ohmmeter If continuity is present as decribed the thermal
15. the tank heater ter minals If continuity is present as described reconnect the wires the tank heater is operating properly If continuity is not present as described replace the tank heater NOTE f the tank heater remains unable to heat remove and inspect heater for cracks in the sheath Removal and Replacement 1 13 14 Page 12 Remove the tank inlet fitting securing the fill basin to the tank lid remove fill basin and tank inlet gasket Setallthree parts aside for reassem bly Disconnect the black wire on the terminal block from the tank heater and disconnect the blue black wire from the limit thermostat or thermal cut off to the control thermostat Disconnect the black wire and the white or red wire from the tank heater terminals Remove sprayhead and the hex nut securing the sprayhead tube to the hood Set aside for reas sembly Remove the eight 8 32 nuts securing the tank lid to the tank Remove the tank lid with limit thermostat or thermal cut off sprayhead tube and tank heater Remove the two hex nuts securing the tank heater to the tank lid Remove tank heater with gaskets and discard Install new tank heater with gaskets on the tank lid and secure with two hex nuts Install tank lid with limit thermostat or thermal cut off sprayhead tube and tank heater using eight 8 32 hex nuts Secure sprayhead tube to hood using a hex nut Install sprayhead Reconnect the wires to the limit the
16. ube When inserted properly no more than two inches of spring should be visible Saw back and forth five or six times NOTE In hard water areas this may need to be done daily It will help prevent liming problems in the brewer and takes less than a minute Page 4 dotes TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered If the problem remains after exhausting the troubleshooting steps contact the Bunn O Matic Technical Service Department e Inspection testing and repair of electrical equipment should be performed only by qualified service personnel e This brewer is heated at all times Keep away from combustibles WARNING Exercise extreme caution when servicing electrical equipment e Unplug the brewer when servicing except when electrical tests are specified Follow recommended service procedures Replace all protective shields or safety notices PROBLEM Water is not hot Spitting or excessive steaming PROBABLE CAUSE 1 Limit Thermostat or Thermal Cut Off CAUTION Do not eliminate or bypass limit thermostat thermal cut off Use only BOM replace ment part Limit Thermostat 29329 7000 2 Control Thermostat 3 Tank Heater 1 Lime Build up CAUTION Tank and tank components should be delimed regularly depending on local water conditions Excessive mineral build up on stainless steel surfaces can initiate corro sive re
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