Manuale d’uso / di manutenzione del prodotto CRT5 del fabbricante Bunn
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OPERA TING & SER VICE MANU AL B UNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 10478.
Page 2 INTRODUCTION This equipment will automatically brew a half-gallon batch of coffee into an awaiting dispenser. The brewer may include a hot water faucet for allied beverage use. It is only for indoor use on a sturdy counter or shelf. W ARRANTY Bunn-O-Matic Corp.
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. # 12364.0000 # 00656.0000 # 00658.0000 # 00831.0000 # 00833.
Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Model 35 requires 3-wire, grounded service rated 120/208 or 120/240 volts ac, 20 amp, single phase, 60 Hz. Proceed as follows: Model 20 requires 2-wire, grounded service rated 120 volts ac, 20 amp, single phase, 60 Hz.
Page 5 MODELS W/OUT FAUCET Models CRT5, CRT5A & CRT5B 1. Remove the shipping cap from the bulkhead fitting on the rear of the brewer. 2. Attach the flare fitting from the short piece of tubing on the flow control (supplied) to the water inlet fitting at the rear of the brewer.
Page 6 INITIAL 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.
Page 7 10478 061500 2. Setting batch sizes. T o set a batch volume, first check that the SET/LOCK switch is in the “ SET ” position on the circuit boar d. Press and hold the ST ART or BREW switch until three distinct clicks are heard, and then release the switch.
Page 8 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 9 TROUBLESHOOTING (cont.) Brew cycle will not start (cont.) Water is not hot PROBABLE CAUSE REMEDY 3. ON/OFF Switch 4. Start Switch 5. Timer 6. Solenoid Valve 7.
Page 10 TROUBLESHOOTING (cont.) Inconsistent beverage level in dispenser Consistently low beverage level in the dispenser Spitting or excessive steaming 1. Strainer /flow control (.222 GPM) 2. Syphon System 3. Lime Build-up CAUTION - Tank and tank components should be delimed regularly depending on local water conditions.
Page 11 TROUBLESHOOTING (cont.) Spitting or excessive steaming (cont.) Dripping from sprayhead Water flows into tank continu- ously (ON/OFF Switch "ON") Water flows into tank continu- ously (ON/OFF Switch "OFF") Beverage overflows dispenser 2.
Page 12 TROUBLESHOOTING (cont.) Weak beverage Dry coffee grounds remain in the funnel Brewer is making unusal noises 1. Filter Type 2. Coffee Grind 3. Sprayhead 4.
Page 13 TROUBLESHOOTING (cont.) Brewer is making unusal noises (cont.) Low beverage serving tempera- ture 4. Tank Heater 1. Warmer 2. ON/OFF Switch Remove and clean lime off the tank heater. See page 20 Refer to Service - Warmer element for testing procedures.
Page 14 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessary.
Page 15 SERVICE (cont.) Test Procedures: 1. Disconnect the brewer from the power source. 2. Locate the blue wire on the control thermostat. 3. Check the voltage across the blue wire on the control the.
Page 16 SERVICE (cont.) LIMIT THERMOSTAT Location: The limit thermostat is located inside the rear of the hood on the tank lid. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the blue and black wires from the limit thermostat.
Page 17 Location: The ON/OFF switch(s) 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 or red wire from the upper terminal and the black wire from the center terminal.
Page 18 SERVICE (cont.) SOLENOID VALVE Location: The solenoid 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 black wires from the solenoid valve.
Page 19 SERVICE (cont.) START SWITCH Location: On brewers w/out fresh light the start switch is located in the right front of the hood. On brewers w/fresh light the start switch is located on the right side of the hood. Test Procedure: 1. Disconnect the brewer from the power supply.
Page 20 SERVICE (cont.) TANK HEATER Location: The tank heater is located inside the tank and secured to the tank lid. Test Procedures: 1. Disconnect the brewer from the power supply.
Page 21 SERVICE (cont.) TANK HEATER (Cont.) P1168.71 FIG. 13 TANK HEATER TERMINALS 10478 061500 13. Secure sprayhead tube to hood using a hex nut. 14. Install sprayhead. 15. Reconnect the wires to the limit thermostat, tank heater and control thermostat.
Page 22 SERVICE (cont.) TANK HEATER SWITCH Location: The tank heater switch is located on the rear of the brewer on the upper left side of the trunk. Test Procedure: 1. Disconnect the brewer from the power source. 2. Disconnect the black wire from the limit thermo- stat.
Page 23 SERVICE (cont.) TANK HEATER SWITCH (cont.) P1135.80 FIG. 15 TANK HEATER SWITCH TERMINALS 10478 061500 14. Reconnect the two black wires to the tank heater switch terminals. 15. Set tank assembly inside the hood on mounting brackets and secure with two #8-32 screws.
Page 24 Location: The thermal cut-off is located inside the hood connected to the tank heater. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the thermal cut-off from the tank heater and the black wire from the control thermostat.
Page 25 SERVICE (cont.) TIMER (Early Models) Location: The timer is located inside the front of the trunk on the upper right side of component bracket. Test Procedure. 1. Disconnect the brewer from the power source. 2. Disconnect the polarized, three pin connector from the brewer wiring harness and rotate the brew timer dial fully counterclockwise.
Page 26 SERVICE (cont.) TIMER (cont.) P1136 FIG. 19 TIMER TERMINALS 10478 061500 If voltage is present as described, the brew timer is operating properly. Reset the timer dial as required, to obtain the desired brew volume. If voltage is not present as described, replace the timer.
Page 27 DIGITAL BREW TIMER (Late Models) P2186.45 FIG. 20 DIGITAL BREW TIMER SERVICE (cont.) Location: The timer is located inside the front of the trunk on the upper right side of component bracket. Test Procedure NOTE: Do not remove or install wires while timer board is installed.
Page 28 4. Attach all wires to the replacement timer board prior to installation to the component mounting bracket. Refer to FIG. 21 when reconnecting the wires. 5. Install new circuit board with spacers (as re- quired) to the component mounting bracket.
Page 29 WARMER ELEMENT(S) Location: The warmer elements are located under the warmer plates. Test Procedures: 1. Disconnect the brewer from the power source. 2. Use the white or red wire to the terminal block and the white/red, yellow, white/violet, brown/black or violet wire to the "ON/OFF" switch.
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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 CRT5 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 CRT5 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Bunn CRT5 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Bunn CRT5 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Bunn CRT5, 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 CRT5.
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 CRT5. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Bunn CRT5 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.
