Manuale d’uso / di manutenzione del prodotto CEZ del fabbricante Bunn
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BUNN ®.
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.
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.
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.
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.
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.
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.
Page 8 CEZ ADJUSTMENTS & OPTIONAL SETTINGS.
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 "®".
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 : !.
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.
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.
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.
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.
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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.
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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.
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.
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.
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.
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.
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/BL.
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.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Bunn CEZ è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Bunn CEZ - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Bunn CEZ imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Bunn CEZ ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Bunn CEZ, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Bunn CEZ.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Bunn CEZ. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Bunn CEZ insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
