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WARRANTY Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the date of installation. In addition: 1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material and workmanship for two years from the date of installation. 2.) Bunn warrants the compressor on refrigeration equipment to be commerciall
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ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. Requires 3-wire, grounded ser- vice rated 120/208 or 120/240 volts ac, 30 amp, single phase, 60 Hz. ELECTRICAL HOOK-UP CAUTION – Improper electrical installation will damage electronic components. 1. An electrician must provide electrical service as specified. 2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source. 3. Remove the f
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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 of one of the brew stations. 2. Place an empty server under the funnel. 3. Connect the brewer to the power source. Water will begin flowing into the tank and stop when the tank is filled to its capacity. Display will show FAULT 7 until tank is filled with water. 4. Wait approximately twenty minute
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DBC CONTROLLER General This brewer utilizes BUNN® DBC™ technology to control most of its functions. The controller is factory set to brew in accordance with accepted coffee industry standards, yet may be customized by the owner to achieve a variety of coffee flavor profiles. All user-accessible features of the controller are viewed and entered using the display unit. The brewer operating settings are stored in the controller and will remain even in the event of power failure. Three requiremen
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Setting or adjusting the brewer’s controls Refer to the function list for the accessible screen numbers and their values. Scroll to the desired function screen and change the value by pressing either the “+” or “–“ keys. The change will not be entered into the programming until you move to another screen by scrolling either up-or-down with the “FUNC” key. Setting or adjusting the tank’s water temperature At the home screen, the actual temperature of the water in the tank is displayed. The targ
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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. • All electronic components have 120 - 240 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Brew cycle will not start (cont.) 4. Start switch Refer to Service - Start switch for testing procedures. See page 30 5. Dispense valve Refer to Service - Dispense valve for testing procedures. See page 20 6. Brew selector switch Refer to Service - Brew selector switch for testing procedures. See page 16 7. Defective DBC Refer to Service - DBC Controller for testing procedures. See page 19 Automatic refill will not operate 1. No water Check
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Water flows into tank continuously 1. Solenoid valve Refer to Service - Solenoid valve for . testing procedures. See page 29 2. Defective DBC Refer to Service - DBC Controller for testing procedures. See page 19 3. Overflow protection switch Refer to Service - Overflow protec- tion switch for testing procedures. See page 26 Water from tank is not hot 1. Limit thermostat Refer to Service -Limit thermostat CAUTION - Do not eliminate or by- for
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TROUBLESHOOTING (cont.) Probable Cause Problem Remedy Spitting or unusual steaming from 1. Lime build-up Inspect the tank assembly for ex- sprayhead or airvents. cessive lime deposits. Delime as re- CAUTION - Tank and tank compo- quired. nents should be delimed regularly depending on local water conditions. Excessive mineral build-up on stain- less steel surfaces can initiate cor- rosive reactions resulting in serious leaks. Inconsistent beverage level in 1. Strainer (A) Direction of flow arrow
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy ® Water overflows filter (cont.) 2. Type of paper filters BUNN paper filters should be used for proper extraction. 3. No sprayhead Check sprayhead Beverage overflows server. 1. Beverage left in server The brew cycle should be started only with an empty server under the funnel. 2. Volume adjustment needed Refer to Setting or Adjusting Batch Volumes, page 7 3. Dispense valve Refer to Service - Dispense valve for testing procedures. See page 20
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Brewer is making unusual noises. 1. Solenoid valve The nut on back of the solenoid must be tight or it will vibrate during operation 2. Plumbing lines Plumbing lines should not be rest- ing on the counter top. 3. Water supply (A) The brewer must be connected to a cold water line. (B) Water pressure to the brewer must not be higher than 90 psi (620 kPa). Install a regulator if necessary to lower the working pressure to approximately 50 psi (34
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SERVICE (cont.) BREW SELECTOR SWITCH (cont.) Removal and Replacement: 1. Disconnect the connector on the selector switch harness from the DBC controller. 2. Disconnect wires from the selector switch, inter- face socket and dispense valve. 3. Loosen the set screw on the switch knob. 4. Remove the 9/16" nut and washer holding the switch to the hood. 5. Remove the switch. 6. Install the new switch. The positioning tab must be in the hole in the hood for proper switch and knob alignment. 7. Install
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SERVICE (cont.) DBC DISPLAY P2214 FIG. 8 DBC DISPLAY Location: The DBC Display is located inside the hood in the upper center of the control panel. Test Procedures: 1. Disconnect the dispenser from the power source. Removal and Replacement: 32248 100500 Page 19 ! CAUTION DISCARD DECANTER DISCARD DECANTER IF: IF: . CR . CRACKED ACKED . SCRATCHED . SCRATCHED . BO . BOILED DRY ILED DRY . H . HEATED WHEN EMPTY EATED WHEN EMPTY FUNNEL CONTENTS FUNNEL CONTENTS . . USED ON HIG USED ON HIGH H FLAME FLA
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