service, repair, trifecta Service & Repair Manual
Contents
1. 55 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 unplugged when servicing except when electrical tests are re quired and the test procedure specifically states to plug in the brewer WARNING Disconnect the brewer from the power source before the removal of any panel or the replace ment of any component FIG 10 1 Remove 2 screws from underneath lift top cover to remove FIG 10 2 Front panel Remove 2 screws FIG 10 3 Push front panel down FIG 10 4 Pull top of panel towards you while pushing down on the side flaps 42824 060611 UPPER CLAMP ASSEMBLY REMOVAL 4 Remove front panel WARNING Disconnect the brewer from the power 9 Disconnect silicon hose from vent valve Discon source before the removal of any panel or the replace nect 2 pin white violet harness from Control Board ment of any component J 11 FIG 5 3 1 Remove top cover 2 Using 5 32 Allen wrench remove 4 socket head screws FlG 5 1 FIG 5 1 3 Disconnect braided hose from Tee fitting FIG 5 2 6 Lift sprayhead assembly from brewer chassis FIG 5 2 5 42824 060611 UPPER CLAMP ASSEMBLY DI2. com SIUE FIG 21 1 LIMIT THERMOSTAT 2 NOTE One additional limit thermostat used on 230V models Test Procedures 1 Disconnect the brewer from the power source 2 Disconnect the wires from the limit thermostat 3 With an ohmmeter check for continuity across the limit thermostat terminals If continuity is presentas described the limitthermostat is operating properly If continuity is not present as described replace the limit thermostat Removal and Replacement 1 Remove the wires from limit thermostat 2 Carefully slide the limit thermostat out from under the retaining clip and remove limit thermostat 3 Carefully slide the new limit thermostat into the retaining clip Ensure the metal face has good contact with tank 42824 060611 TANK ASSEMBLY TEMPERATURE PROBE 3 Location The temperature probe is inserted through the tank lid assembly Test Procedures 1 Disconnect the brewer from the power source 2 With a DC voltmeter check voltage across the two wires at J2 on control board black probe to black wire red probe to white wire refer to FIG 17 1 Connect the brewer to the power source The indication should be between 4 5vdc cool to 1vdc at ready temperature 3 Disconnect the brewer from the power source If voltage is present as described circuit is working correctly If voltage is not present as described proceed to 4 4 Disconnect temperature probe from J
3. If no voltage is present check power cord to the board If voltage is present and brewer does not power on replace Control Board Removal and Replacement 1 Disconnect brewer from power source 2 Disconnect the wires and harnesses from the control board 3 Remove the six screws securing the control board to the bracket 4 Secure the new control board to the bracket with SIX screws 5 Re connect wires and harnesses 42824 060611 CONTROL BOARD TRIAC MAP Triac 2 Load Component Connector Tank Heaters Refill solenoid Rinse solenoid Heater Terminal L2 Terminal Red wire White wire Brown wire White wire HOT WATER PROM LOCK dir TANK J3 9 t g SET lt Zr WOILdO OC 08107 JILVN 0 NNRH LAW FIG 12 1 TRIAC MAP 42824 060611 DISPLAY SWITCH BOARD FIG 13 1 DISPLAY BOARD Location The display board is located on the front face plate Test Procedures Check for 12VDC supply to display Place meter leads at green and black wires as shown below FIG 13 2 DISPLAY BOARD TEST Test Switches Procedure Enter program mode by pressing both arrow but tons until display reads RECIPE CHANGES Press and release the center program button until display reads SERVICE TOOLS Select YES Display will read TEST OUTPUTS select NO Display will read TEST SWITCHES selec
4. SERVICE amp REPAIR MANUAL BUNN O MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 PHONE 217 529 6601 FAX 217 529 6644 WWW bunn com 42824 0000B 05 12 2011 0 Corporation BUNN O MATIC COMMERCIAL PRODUCT WARRANTY Bunn O Matic Corp BUNN warrants equipment manufactured by it as follows 1 Airpots thermal carafes decanters GPR servers iced tea coffee dispensers MCP MCA pod brewers thermal servers and Thermofresh servers mechanical and digital 1 year parts and 1 year labor 2 All other equipment 2 years parts and 1 year labor plus added warranties as specified below a Electronic circuit and or control boards parts and labor for 3 years b Compressors on refrigeration equipment 5 years parts and 1 year labor c Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis parts and labor for 4 years or 40 000 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 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
5. on DISPLAY J3 J2 1 1 J5 1 6 4 3 5 10 1 WHI Rx 040 5vde 2 BLK Board Ground 3 RED Tx 0 to 3 4 FLOW METER 4 GRN 12 to 18vdc non reg supply SIG YEL J7 GND 1 RE a PRESS BLU BLK OUT i PUMP WHI POWER CORD 230V AC CE BREW PEE 2 WIRE RINSE SINGLE PHASE 230VAC SOLENOIDS Earth Ground GRN YEL FILL Chassis Ground 42830 0001B 11 10 2010 BUNN O MATIC CORPORATION 15 42824 060611
6. Install new pump in reverse order FIG 15 2 PUMP MOTOR 42824 060611 TANK ASSEMBLY TEMPERATURE PROBE 3 FIG 16 1 TANK HEATER 1 Location The tank heaters are located inside the tank and secured to the tank bottom Test Procedures 1 With a voltmeter check voltage across the white wire 120V Models or red wire 120 208 240V Models from the terminal block and black wire from the control board Connect brewer to the power source The indication will be the rated line voltage during a heating cycle 2 Disconnect the brewer from the power source If voltage is present as described proceed to 73 If voltage is not present as described refer to the Wir ing Diagrams and check wiring harness 12 HEATER 1450W 100V RESISTANCE 8 9 10 9 0 32 8 40 1 0 6 2 7 60 1450W 120V 1450W 230V TERMINAL TO SHEATH INFINITE OPEN 3 Disconnectthe wires from the tank heater terminals 4 Checkresistance value across tank heater terminals and compare to chart If resistance is present as described reconnect the wires the tank heater is ok If resistance is not present as described replace the tank assembly Removal and Replacement Remove the front access panel Drain water from the tank Disconnect all the hoses from the tank Disconnect all the wires from the tank Remove the 2 screws and strap securing the tank Install new tank assembly in reverse order VIDEO CLIP Tank removal Click
7. sound is heard as described there may be a blockage in the valve hose tank or sprayhead Disconnect the brewer from the power source Remove the valve and inspect for blockage and de lime all related areas 4 Connect the voltmeter leads to the coil terminals Turn on the valve with the test mode The indication will be the rated line voltage If voltage is present as described but no coil action is observed check continuity resistance of coils 96kN 10 for 100V models gray 1 2kn 10 for 110 120V models black 4 23ko 10 for 220 240V models white If either coil does not have the resistance listed above solenoid is defective Replace solenoid and test again to verify repair If voltage is not present as described refer to Wir ing Diagrams and check the brewer wiring harness Also check the control board and switches for proper operation 10 Removal and Replacement 1 Disconnectthe brewerfrom water amp power sources 2 Unscrewthe brass elbow assembly from the valve Loosen do remove the 2 X 6mm screws securing the solenoid to the bracket 4 Slide the solenoid up amp out of bracket 9 Remove hoses from the valve 6 Disconnect wires from the valve 7 Install new valve in reverse order FIG 14 2 EXPLODED VIEW NOTE Donotusesimilar valves from other models as this one has a flow control built into the inlet of the refill side 42824 060611 AIR PUMP MOTORS TURBULE
8. 2 on control board Check the resistance across the two ter minals of the temperature probe The indication should be between 10 5 cool to 8700 at ready temperature If resistance is to specification replace the control board If resistance is not to specification replace the tem perature probe 17 1 TESTING TEMPERATURE PROBE 13 Removal and Replacement 1 Disconnect the brewer from the power source 2 Disconnect the two pin connector from J2 on control board Remove clamp Pull probe out of tubing 4 nstall in reverse order 42824 060611 SCHEMATIC WIRING DIAGRAM TRIFECTA BLU BLK AIR PUMP MOTOR BRN SOLENOID _ J3 1 J5 1 5 10 1 WHI Rx 0 to 5vde 2 BLK Board Ground 3 RED Tx 0 to 3 4 FLOW METER 4 GRN 12 to 18vdc reg supply SIG YEL l J7 1 RED BLU BLK BLK Earth Ground 100 120V AC 2 WIRE GND CHAMBER POWER CORD FILL RINSE SINGLE PHASE 42830 0000C 11 10 2010 BUNN O MATIC CORPORATION 120VAC SOLENOIDS 14 42824 060611 SCHEMATIC WIRING DIAGRAM TRIFECTA BLU BLK WHI LLI T lt gt c 230VAC IL AIR PUMP MOTOR y 4 e gt gt gt AIR VENT y SOLENOID T
9. NCE PUMP FIG 15 1 PUMP MOTORS Location The pump motors are located inside the top cover Test Procedures 1 Refertothe Programing Section for Service Tools Test Outputs Turbulence Press Out Pumps 2 Besurebrew chamber cup amp containerare in place before activating either motor 3 Turn the motor with the test mode Listen care fully in the vicinity of the motor to hear if it s running If no sound is heard as described proceed to 4 If the sound is heard as described there may be a blockage in the hoses Disconnect the brewer from the power source Remove the hoses and inspect for blockage 4 Connect the voltmeter leads to the coil terminals Turn on the valve with the test mode The indication will be OVDC off 12 18VDC on If voltage is present as described but no coil action is observed valve is defective Replace valve and test again to verify repair If voltage is presentas described butno action is observed check continuity resistance of coils 20 300 If coil does not have the resistance listed above pump is defective Replace pump and test again to verify repair If voltage is not present as described refer to Wir ing Diagrams and check the brewer wiring harness Also check the control board and switches for proper operation 11 Removal and Replacement Disconnect the brewer from the power source 1 2 Remove nut and clamp 3 Disconnect harness and hose from the pump 4
10. SASSEMBLY WARNING Disconnect the brewer from the power 3 Lift the sprayhead plug assembly out of the cap source before the removal of any panel or the replace ment of any component 1 Removec clip pivotshaftand brew chamber litter FIG 6 3 SAFETY SWITCH REPLACEMENT NOTE Testing the switch should be done in Program mode TEST SWITCHES 2 Using 5 32 Allen wrench remove one or both socket head screws from handle Split the slide 4 Placetheassembly as shown sothe switch actua tor pin does not fall out Remove the 2 phillips oe screws securing the switch bracket NOTE If placing the switch harness secure itto the unused hose barb to prevent damage to wires FIG 6 4 REASSEMBLY 5 During reassembly be sure to lubricate o rings bushings and guides as required 6 42824 060611 CONTROL BOARD FIG 11 1 CONTROL BOARD Location The Control Board is located behind the front cover Test Procedures The test procedures for the control board will vary depending upon the problems experienced by the brewer Refer to the Troubleshooting section which is divided into three sections Refill Circuit Heating Circuit and Brewing Circuit Check for Power to board 1 Place one meter lead at L1 terminal and the other lead at L2 terminal on the Control Board 2 With the power connected to brewer the voltage reading to the board should be the line voltage rated for that model
11. able parts and labor warranty periods 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 392 AutoPOD AXIOM BrewLOGIC BrewMETER Brew Better Not Bitter BrewWISE BrewWIZARD BUNN Espress BUNN Family Gourmet BUNN Gourmet BUNN Pour O Matic BUNN BUNN with the stylized red line BUNNIink Bunn OMatic Bunn O Matic BUNNserve BUNNSERVE with the stylized wrench design Cool Froth DBC Dr Brew stylized Dr design Dual Easy Pour EasyClear EasyGard FlavorGard Gourmet Ice Gourmet Juice High Intensity iMIX Infusion Series In tellisteam My Caf Phase Brew PowerLogic Quality Beverage Equipment Worldwide Respect Earth Respect Earth with the stylized leaf and coffee cherry design Safety Fresh savemycoffee com Scal
12. e Pro Silver Series Single Smart Funnel omart Hopper SmartWAVE Soft Heat SplashGard The Mark of Quality in Beverage Equipment Worldwide ThermoFresh Titan trifecta Velocity Brew A Partner You Can Count On Air Brew Air Infusion Beverage Bar Creator Beverage Profit Calculator Brew better not bitter BUNNSource Coffee At Best Cyclonic Heating System Daypart Digital Brewer Control Nothing Brews Like a BUNN Pouring Profits Signature Series Tea At Its Best The Horizontal Red Line Ultra are either trademarks or registered trademarks of Bunn O Matic Corporation 2 42824 030912 5 T 2 COMON E 3 GCS Sees iecit pistol 4 Upper Clamp Assembly 00 00 n 5 Upper Clamp Assembly Disassembly 6 OU testa mus DU i A AEC te 9 Re RIS a 10 PATE ale WWE VIO TOS atacan echo tacit Me EE 11 EKAS S I I E TE 12 RO RISE TTE 12 Temiperarure PrOD 2 13 SCMEMALUG Wiring Diagram S sauces quse 14 42824 060611
13. maintenance or repair non periodic cleaning and descaling equipment failures related to poor water quality damage or casualty In addition the warranty does not apply to replacement of items subject to normal use including but not limited to user replaceable parts such as seals and gaskets 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 EX PRESS 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 op tion while the equipment is under warranty shall either 1 provide at no charge replacement parts and or labor during the applic
14. t YES Display will read PRESS PROGRAM TO EXIT as it enters the test mode When no switches are activated the display will read NOTH ING PRESSED You can press any of the buttons on the control panel and display will indicate which one you activated You can also test the safety switch by opening and closing the brew chamber handle Press program button to go back to previous screen Removal and Replacement 1 Disconnect brewer from power source Remove top cover Lift board bezel assembly up Disconnect harness from board Remove 4 screws securing board to bezel Install new board w keys to bezel Connect harness to board Install board bezel assembly back into housing Install top cover 2 3 4 D 6 f 9 Wrap a thin paper clip around each meter lead and extend past the tip by 1 4 1 You may need to sand off the clear coating on some clips 42824 060611 REFILL RINSE SOLENOID VALVES FIG 14 1 REFILL RINSE SOLENOID Location The brew valve is located inside the top cover Test Procedures 1 Refertothe Programing Section for Service Tools Test Outputs Refill Rinse Valve 2 Besurebrew chamber cup amp container are in place before activating either valve 3 Check the valve for coil action Turn the valve in the test mode Listen carefully in the vicinity of the solenoid for a click as the coil pulls the plunger in If no sound is heard proceed to 4 Ifthe
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