Bunn CDBC-DV Operating & Service Manual

Bunn CDBC-DV Operating & Service Manual

Bunn cdbc-dv: user guide

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OPERATING & SERVICE MANUAL
29707.0000G 08/03 ©1999 Bunn-O-Matic Corporation
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BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
CDBC-DV, CDBCF-DV
CDBC-DV, CDBCF APS-DV
CDBCF LPTC-DV
CDBC-MV, CDBCF-MV
CDBC-MV, CDBCF APS-MV
www.bunnomatic.com

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Summary of Contents for Bunn CDBC-DV

  • Page 1 E OR Y BE S MA E OR OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION 29707.0000G 08/03 ©1999 Bunn-O-Matic Corporation CDBC-DV, CDBCF APS-DV CDBC-MV, CDBCF APS-MV POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 CDBC-DV, CDBCF-DV...
  • Page 2 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.
  • Page 3: 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. #00658.0000 #00831.0000 CAUTION When re-wiring the machine for operation on 120/208V or 120/240V, the replacement Power Supply Cord must be UL Listed Flexible Cord Type SO, SJO, SJTO, HSJO or SJOW, No.
  • Page 4 USER NOTICES (CONT.) Optional Field Wiring 120 V, 15.0 A, 1800 W 1PH, 2-Wire, 60HZ #29710.0005 (DV models only) CDBCF-DV BREWERS Optional Field Wiring 120/208-240 V, 13.0-15.0 A, 2680-3550 W 1PH, 3-Wire, 60HZ #29710.0008 (DV models only) CDBC LPTC-DV BREWERS #02765.0000 #12364.0000 Optional Field Wiring...
  • Page 5: Electrical Hook-Up

    Models CDBC-DV, CDBC-APS DV & CDBCF LPTC-DV ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Brewers with an attached cord set require 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz.
  • Page 6 Models CDBC-MV & CDBC-APS MV ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. TANK HEATER TERMINAL BLOCK WIRING DIAGRAM 1800W @ 120V 1800W 1425W L2 RED WHITE NEUTRAL 120V A.C. L1 BLACK FIELD WIRING TERMINAL BLOCK DIAGRAM 1800W VERSION...
  • Page 7: Plumbing Requirements

    " water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the counter top. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water flow.
  • Page 8: Operating Controls

    BREW SWITCH Momentarily pressing and releasing the switch starts a brew cycle when the "ON/OFF" indicator is glowing. NOTE – The "ON/OFF" indicator must be glowing to initiate and complete a brew cycle. ADDITIONAL WARMER SWITCHES Pressing any additional warmer switch so that the indicator is glowing, supplies power to the associated warmer.
  • Page 9: Adjustments & Optional Settings

    ADJUSTMENTS & OPTIONAL SETTINGS Setting Brew Temperature The brewer is factory set to brew at 200 F (95 C). To change this setting, press and hold the "HIDDEN" switch beneath the "®". The word "TEMP" above the "ON/OFF" switch will glow to correspond with the temporary function change of this switch.
  • Page 10 ADJUSTMENTS & OPTIONAL SETTINGS (CONT.) 3. Press and hold the brew start button until you hear the brew solenoid click on-and-off three times (approximately 5 seconds). Release the button. 4. Allow the cycle to continue until the desired amount of water is dispensed and then turn "OFF" the brewer. The brewer is now set to dispense this amount of water for each subsequent brew cycle.
  • Page 11: 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. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
  • Page 12 TROUBLESHOOTING (cont.) REFILL CIRCUIT PROBLEM Will not fill or refill PROBABLE CAUSE 1. Power off to brewer 2. Water shut off 3. Display flashing 4. ON/OFF Switch 5. Lime build up on Probe 6. Refill Valve or Control Board Page 12 REMEDY Press warmer switches on control panel to determine if power is ON.
  • Page 13 TROUBLESHOOTING (cont.) REFILL CIRCUIT (cont.) PROBLEM Fill or refill does not shut "OFF" (ON/ OFF Switch "ON") Fill or refill does not shut "OFF" (ON/ OFF Switch "OFF") PROBABLE CAUSE 1. Lime build up on probe 2. Water Level Probe Sensing Sys- 3.
  • Page 14: Heating Circuit

    TROUBLESHOOTING (cont.) HEATING CIRCUIT PROBLEM Water does not heat to proper tem- perature IMPORTANT: Make sure no tem- perature tests are taken before the ready light is "ON". Tank tempera- ture must be stabilized before read- ings are taken. PROBABLE CAUSE 1.
  • Page 15 TROUBLESHOOTING (cont.) HEATING CIRCUIT (cont.) PROBLEM Water does not heat to proper tem- perature (cont.) IMPORTANT: Make sure no tem- perature tests are taken before the ready light is "ON". Tank tempera- ture must be stabilized before read- ings are taken. PROBABLE CAUSE 6.
  • Page 16 TROUBLESHOOTING (cont.) HEATING CIRCUIT (cont.) PROBLEM Spitting or excessive steaming (cont.) Brewer is making unusual noises PROBABLE CAUSE 1. Lime build up on temperature probe, tank or tank heater 2. Temperature Probe 3. Control Board 1. Plumbing lines 2. Water supply 3.
  • Page 17 TROUBLESHOOTING (cont.) BREWING CIRCUIT PROBLEM Brew cycle will not start PROBABLE CAUSE 1. Display flashing 2. No water 3. No power or incorrect voltage to the brewer 4. ON/OFF switch not in the "ON" position 5. Low water temperature (Brew lockout is enabled) 6.
  • Page 18 TROUBLESHOOTING (cont.) BREWING CIRCUIT (cont.) PROBLEM Brew cycle will not start (cont.) Consistently low beverage level in the dispenser or beverage overflows dispenser PROBABLE CAUSE 8. Control board or dispense valve 1. Brew volume NOTE: Volume adjustments must be made with sprayhead installed. 2.
  • Page 19 A fine drip or grind must be used for proper extraction. ® The BUNN paper filter must be centered in the funnel and the bed of grounds leveled by shaking gen- tly.
  • Page 20 Make sure sprayhead is present and holes are clear and unobstructed. There should be six separate streams of water coming out of the sprayhead. The BUNN ® paper filter must be centered in the funnel and the bed of grounds leveled by shaking gen- tly.
  • Page 21 Intermittent flashing of the bank of temperature indicators, indicates that a fault exists. Count the number of flashes between pauses and use this chart as a guide to investigating the fault. FLASHES CAUSE Dry Plug - In Fault - Sheath of temperature probe dry for 10 minutes after power-up Low Tank Level Fault - Level probe dry for 7 minutes after fill valve is energized Low Water Temperature Fault -...
  • Page 22: Table Of Contents

    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.
  • Page 23: Control Board

    SERVICE (cont.) CONTROL BOARD FIG. 2 CONTROL BOARD Location: The Control Board is located inside the top cover behind the front end cap. Test Procedures: The test procedures for the control board will vary depending upon the problems experienced by the brewer.
  • Page 24: Switch Panel

    SERVICE (cont.) SWITCH PANEL FIG. 3 SWITCH PANEL Location: The Switch Panel is located in the front of the hood. Test Procedures: The test procedures for the switch panel and the control board will vary depending upon the problems experienced by the brewer. Refer to the Troubleshoot- ing guide beginning on page 10.
  • Page 25: Dispense Valve

    SERVICE (cont.) DISPENSE VALVE FIG. 4 DISPENSE VALVE Location: The dispense valve is located inside the top cover behind the front end cap. Test Procedures: 1. Disconnect the brewer from the power source. 2. Check the water level in the tank to confirm that it is within 1/2"...
  • Page 26: Limit Thermostat

    SERVICE (cont.) LIMIT THERMOSTAT FIG. 6 LIMIT THERMOSTAT Location: The limit thermostat is located inside the front access panel on the front side of the tank. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the blue and black wires from the limit thermostat.
  • Page 27: Tank Heaters

    SERVICE (cont.) TANK HEATERS Location: The tank heaters are located inside the tank and secured to the tank bottom. DV models only Test Procedures : 1. Disconnect the brewer from the power source. 2. With a voltmeter, check voltage across the white wire from the terminal block and black wire from the control board.
  • Page 28 SERVICE (cont.) TANK HEATERS (cont.) 11. Disconnect the two white wires from the tank warmer blanket. 12. Disconnect the black, white and blue wires from the tank heater terminals. DV models only, dis- connect the brown and red wires from tank heater terminals.
  • Page 29: Voltage Selector Switch

    SERVICE (cont.) VOLTAGE SELECTOR SWITCH - FIG. 10 VOLTAGE SELECTOR SWITCH Location: The voltage selector switch is located on the component mounting bracket behind the front access panel. Test Procedure: 1. Disconnect the brewer from the power source. 2. With the voltage selector switch in the 120V posi- tion, connect a voltmeter between the black termi- nal of the terminal block and the center terminal of the selector switch.
  • Page 30: Refill Valve

    SERVICE (cont.) REFILL VALVE FIG. 12 REFILL VALVE Location: The refill valve is located inside the trunk on the lower center part of the component bracket. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the white and white/blue wires from the refill valve.
  • Page 31: Warmer Elements

    SERVICE (cont.) WARMER ELEMENT(S) FIG. 14 WARMER ELEMENTS Location: The warmer element(s) is located under the warmer plate. Test Procedures: 1. Disconnect the brewer from the power source. 2. With a voltmeter, check voltage across the two wires at the warmer element with the "ON/OFF" switch in the "ON"...
  • Page 32: Fuse Holder And Fuse

    SERVICE (cont.) FUSE HOLDER/FUSE ASSEMBLY FIG. 15 FUSE HOLDER AND FUSE ASSEMBLY Location: The fuse holder and fuse assembly is located on the left rear side of the brewer. Test Procedures: 1. Disconnect the brewer from the power source. 2. Remove the cap from the fuse holder and remove the fuse.
  • Page 33: Thermal Fuses

    SERVICE (cont.) MV models only THERMAL FUSES FIG. 16 THERMAL FUSES Location: The thermal fuses are included with the wiring harness from the tank heater terminals to the terminal block located inside the top cover. Test Procedures: 1. Disconnect the brewer from the power source. 2.
  • Page 34: Wiring Diagrams

    TOP FRNT SW J2-6 HIDDEN SW RT REAR SW (NOTE – ALL WARMERS ARE NOT STATIC J2-11 AVAILABLE ON ALL MODELS!) SHIELD J3-1 J3-4 29685.0002D 05/02 ©2001 BUNN-O-MATIC CORPORATION SELECTOR SWITCH TANK HEATER BLU-14 BLK-14 1425W "KEEP WARM" HEATER DISPENSE WHI/GRN BRN/BLK...
  • Page 35 BLU-14 1425W "KEEP WARM" HEATER REFILL WHI/BLU DISPENSE WHI/GRN 120V AC 2 WIRE 120/208V AC 3 WIRE LEVEL 120/240V AC 3 WIRE PROBE SINGLE PHASE 29685.0003E 08/03 ©2001 BUNN-O-MATIC CORPORATION Page 35 WHI-14 TANK HEATER WHI/VIO-14 1800W RED-14 29707 080503...
  • Page 36 RT REAR SW HIDDEN SW (NOTE – ALL WARMERS ARE NOT STATIC J2-11 AVAILABLE ON ALL MODELS!) SHIELD J3-1 J3-4 29685.0000A 4/99 ©1999 BUNN-O-MATIC CORPORATION THERMAL FUSE "KEEP WARM" HEATER DISPENSE WHI/GRN BRN/BLK BRN/BLK (SEE TABLE BELOW FOR USAGE) LT REAR SW...
  • Page 37 FUSE "KEEP WARM" HEATER REFILL WHI/BLU DISPENSE WHI/GRN 120/208V AC 3 WIRE 120/240V AC 3 WIRE LEVEL PROBE 29685.0001A 4/99 ©1999 BUNN-O-MATIC CORPORATION Page 37 TANK HEATER THERMAL BLU-14 TANK HEATER WHI-14 BLK-14 BLK-14 120V AC 2 WIRE SINGLE PHASE...

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