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Bunn CDBCF CDBCP - page 1
BUNN ® ...
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Bunn CDBCF CDBCP - page 2
Page 2 INTRODUCTION This equipment will automatically brew a half-gallon batch of coffee into an awaiting decanter at the press of a button. A hot water faucet is included for allied beverage use. Most functions of the brewer are digitally controlled. It is only for indoor use on a sturdy counter or shelf. CONTENTS Introduction & W arranty .... ...
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Bunn CDBCF CDBCP - page 3
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. ! W ARNING FUNNEL CONTENTS ARE HO T DISCARD DECANTER IF: ° CRACKED ° SCRA TCHED ° BOILED DR Y ° HEA TED WHEN EMPTY ° USED ON ...
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Bunn CDBCF CDBCP - page 4
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Model 15 has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. Model 35 requires 3-wire, grounded service rated 120/208 or 120/240 volts ac, 20 amp, single phase, 6 ...
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Bunn CDBCF CDBCP - page 5
Page 5 OPERA TING CONTROLS Model CEZ ON/OFF SWITCH Placing the "ON/OFF" switch in the "ON" upper position supplies power to the brew station warmer, enables the brew circuit, and energizes the tank refill circuit. Placing the switch in the "OFF" lower position stops tank refilling and brewing and deenergizes the brew s ...
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Bunn CDBCF CDBCP - page 6
Page 6 INITIAL SET -UP 1. Insert an empty funnel into the funnel rails. 2. Place an empty decanter under the funnel. 3. Connect the brewer to the power source. 4. Model CDBC – Press the "ON/OFF" switch (indicator glowing). Model CEZ – Place the "ON/OFF" switch in the "ON" upper position. 5. Water will flow into the ...
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Bunn CDBCF CDBCP - page 7
Page 7 29079 042803 POUR-OVER FEA TURE If the brewer is equipped with a pour-over feature, follow the instructions below. 1. Remove the thumbscrew and pour-in lid from the top cover of the brewer and set aside. 2. Insert a BUNN ® filter into the funnel. 3. Pour fresh coffee grounds into the filter and level the bed of grounds by gently shaking. 4. ...
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Bunn CDBCF CDBCP - page 8
Page 8 CEZ ADJUSTMENTS & OPTIONAL SETTINGS ...
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Bunn CDBCF CDBCP - page 9
Page 9 CDBC ADJUSTMENTS & OPTIONAL SETTINGS HIDDEN SWITCH Setting Brew T emperature The brewer is factory set to brew at 200 ° F (93˚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 funct ...
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Bunn CDBCF CDBCP - page 10
Page 10 BREW VOLUME SET-UP: Use the following steps when the setting is unknown or a different circuit board is being installed. 1. Place an empty funnel in the funnel rails and an empty decanter/server or graduated vessel beneath the funnel. 2. Place the "ON/OFF" switch in the "ON", upper position. 3. Press and hold the brew st ...
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Bunn CDBCF CDBCP - page 11
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 b ...
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Bunn CDBCF CDBCP - page 12
Page 12 Will not fill or refill PROBABLE CAUSE REMEDY PROBLEM 1. Power off to brewer (all models) 2. Water shut off (all models) 3. Display flashing (CDBC) or ready light flashing (CEZ) 4. ON/OFF Switch (all models) 5. Lime build up on Probe (all models) 6. Refill Valve or Control Board (all models) Press warmer switches on control panel to determi ...
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Bunn CDBCF CDBCP - page 13
Page 13 TROUBLESHOOTING (cont.) Fill or refill does not shut "OFF" (ON/OFF Switch "ON") Fill or refill does not shut "OFF" (ON/OFF Switch "OFF") PROBABLE CAUSE REMEDY PROBLEM 1. Lime build up on probe (all models) 2a. Water Level Probe Sensing System (CDBC) 2b. Water Level Probe Sensing System (CEZ) 3. Refill ...
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Bunn CDBCF CDBCP - page 14
Page 14 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY HEATING CIRCUIT 1. Display flashing (CDBC) or ready light flashing (CEZ) 2. Water not touching tempera- ture probe 3a. Dry Plug In Probe Sensing System (CDBC) 3b. Dry Plug In Probe Sensing System (CEZ) Brewer has shut down due to malfunction (See Diagnostic Chart in manual, Page 19, or u ...
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Bunn CDBCF CDBCP - page 15
Page 15 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Water does not heat to proper temperature (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. Spitting or excessive steaming 4a. Temperature Probe (CDBC) 4b. Temperature ...
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Bunn CDBCF CDBCP - page 16
Page 16 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY Spitting or excessive steaming (cont.) Brewer is making unusual noises 2a. Temperature Probe (CDBC) 2b. Temperature Probe (CEZ) 3. Control Board (all models) 1. Plumbing lines 2. Water supply 3. Lime build up A) Remove the probe from the grommet and submerge in a water bath of approximat ...
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Bunn CDBCF CDBCP - page 17
Page 17 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT Brew cycle will not start 1. Display flashing (CDBC) or ready light flashing (CEZ) 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. Water not touching refil ...
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Bunn CDBCF CDBCP - page 18
Page 18 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) If the start switch (CEZ) or switch panel (CDBC) is operating prop- erly, proceed as follows. Attach a voltmeter to the terminals of the dispense solenoid. Connect the brewer to the power source. Turn on the brewer and press the BREW switch. Voltage should be pres ...
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Bunn CDBCF CDBCP - page 19
Page 19 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) Dripping from spray head Weak beverage 1. Lime build up 2. Dispense valve 1. Sprayhead 2. Water temperature 3. Filter type 4. Coffee grind 5. Funnel loading Inspect the tank assembly for ex- cessive lime deposits. Delime as required. Remove the dispense valve and ...
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Bunn CDBCF CDBCP - page 20
Page 20 TROUBLESHOOTING (cont.) PROBLEM PROBABLE CAUSE REMEDY BREWING CIRCUIT (cont.) Dry coffee grounds remain in the funnel Low beverage serving tempera- ture 1. Sprayhead 2. Funnel loading 1. Warmer Make sure sprayhead is present and holes are clear and unob- structed. There should be six sepa- rate streams of water coming out of the sprayhead. ...
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Bunn CDBCF CDBCP - page 21
Page 21 Intermittent flashing of the READY indicator (Model CEZ) or the bank of temperature indicators (Model CDBC) 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 THINGS TO CHECK 1 Dry Plug - In Fault - Water Pressure (Is water shut "OFF") S ...
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Bunn CDBCF CDBCP - page 22
Page 22 C A U TIO N : W A R M E R S A N D S U R F A C E S A R E H O T C A U T I O N D IS C A R D D E C A N T E R IF : ! ...
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Bunn CDBCF CDBCP - page 23
Page 23 SERVICE (cont.) CONTROL BOARD - Model CDBC 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. Refer to the Troubleshooting guide beginning on page 9. The troubleshooting guide is divi ...
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Bunn CDBCF CDBCP - page 24
Page 24 SERVICE (cont.) CONTROL BOARD - Model CEZ Location: The Control Board is located inside the trunk behind the front access panel. Test Procedures: The test procedures for the control board will vary depending upon the problems experienced by the brewer. Refer to the Troubleshooting guide beginning on page 9. The troubleshooting guide is divi ...
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Bunn CDBCF CDBCP - page 25
Page 25 SERVICE (cont.) SWITCH PANEL - Model CDBC 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 9. The troubleshooting guide is divi ...
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Bunn CDBCF CDBCP - page 26
Page 26 SERVICE (cont.) ON/OFF SWITCHES - Model CEZ Location: The ON/OFF switches are located on the front of the hood. Test Procedure: 1. Disconnect the brewer from the power source. 2. Viewing the switch from the back remove the white wire from the upper terminal and the black wire from the center terminal. 3. With a voltmeter, check the voltage ...
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Bunn CDBCF CDBCP - page 27
Page 27 ...
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Bunn CDBCF CDBCP - page 28
Page 28 SERVICE (cont.) 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" from the top of the tank. 3. Connect the brewer to the power source. If the brewer ...
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Bunn CDBCF CDBCP - page 29
Page 29 ...
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Bunn CDBCF CDBCP - page 30
Page 30 Location: The tank heater is located inside the tank and secured to the tank bottom. Test Procedures: 1. Disconnect the brewer from the power supply. 2. With a voltmeter, check the voltage across the white or red wire from the terminal block and the black wire from the control board. Connect the brewer to the power source. The indication mu ...
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Bunn CDBCF CDBCP - page 31
Page 31 P1856 SERVICE (cont.) TANK HEATER (Cont.) 18. Install tank lid and secure in place with eight #8-32 nuts. 19. Connect the two white wires of the tank warmer blanket. 20. Connect the limit thermostat to the front of the tank assembly. 21. Connect the green wire to the tank mounting bracket using #8-32 nut. 22. Connect the pink wire to the le ...
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Bunn CDBCF CDBCP - page 32
Page 32 SERVICE (cont.) 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. Set the "ON/OFF" switch in the "ON" upper position. 3. ...
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Bunn CDBCF CDBCP - page 33
Page 33 C A U T I O N DISCARD DECANTER IF: ! SERVICE (cont.) WARMER ELEMENT(S) Location: The warmer element(s) is located under the warmer plate. Test Procedures: 1. Disconnect the brewer from the power source. 2. Use the white wire from the terminal block and the other bottom wire on the "ON/OFF" switch. 3. With a voltmeter, check voltag ...
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Bunn CDBCF CDBCP - page 34
Page 34 P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR. SOL SCHEMATIC WIRING DIAGRAM CDBC - 15, 20 & 35 29077.0000C 04/03 ©1998 BUNN-O-MATIC CORPORATION P2 P1 P1 FRONT WARMER P3 BRN/BLK VIO WHI REAR WARMER TANK HEATER L1 GRN RED-14 (MODEL 35) WHI-14 (MODELS 15 & 20) N L2 BLU-14 BLU-14 "KEEP WARM" HEATER WHI BREW STA ...
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Bunn CDBCF CDBCP - page 35
Page 35 P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR. WHI SOL WHI SCHEMATIC WIRING DIAGRAM CEZ 29076.0000D 4/99 ©1998 BUNN-O-MATIC CORPORATION P2 P1 FRONT WARMER WHI WHI P3 WHI BRN/BLK VIO WHI REAR WARMER WHI WHI START SWITCH TANK HEATER L1 GRN RED-14 (MODEL 35) WHI-14 (MODELS 15 & 20) N L2 BLU-14 BLU-14 "KEEP WARM" H ...
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Bunn CDBCF CDBCP - page 36
Page 36 29079 042803 P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR. SOL SCHEMATIC WIRING DIAGRAM CDBCP/CDBCPF - 15, 20 & 35 W/Flashing Lamp (Freshness) 29077.0002B 04/03 ©2002 BUNN-O-MATIC CORPORATION P2 P1 P1 FRONT WARMER P3 BRN/BLK VIO WHI REAR WARMER TANK HEATER L1 GRN RED-14 (MODEL 35) WHI-14 (MODELS 15 & 20) N L2 BLU-14 ...
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