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CONTENTS Introduction .............................................................. 2 Warranty ................................................................... 2 User Notices ............................................................. 3 Electrical Requirements ............................................ 4 Plumbing Requirements ........................................... 4 Initial Set-Up............................................................. 5 Operating Controls......................
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ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. 120V model brewers require 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz. Proceed as follows: Electrical Hook-Up CAUTION – Improper electrical installation will damage electronic components. 1. An electrician must provide electrical service as specified. 2. Connect the brewer to the power source. 3. Using a voltmeter, check the voltage at the elect
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INITIAL SET-UP 1. Insert the funnel (empty) into the funnel rails. 2. Place an empty tea dispenser on the brewer base. Be prepared to empty the dispenser a few times. 3. Plug in the brewer, place the TEA/OFF/COFFEE switch in the “COFFEE” position, and momentarily press the start switch. When the flow of water into the tank stops, press the start switch to initiate a second cycle. Wait until the flow of water stops and start a third cycle. During the third cycle, the tank will fill to its capac
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OPERATING CONTROLS A. TEA/OFF/COFFEE Switch TEA- Placing the switch in the full left position allows the start switch to activate a timed brew cycle for a 0.5 gallon of tea concentrate and 2.5 gallons of dillution water into the dispenser. COFFEE- Placing the switch in the full right position allows the start switch to activate a timed brew cycle for a 0.5 gallon of coffee into the dispenser. OFF - Placing the switch in the center position stops the brew cycle. Stopping a brew cycle after it ha
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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 person- nel. • All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the ap
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TROUBLESHOOTING (cont.) BREW CIRCUIT PROBLEM PROBABLE CAUSE REMEDY Ready Light Flashing 1. Brewer has shut down due to Refer to Diagnostic Chart on page 14. malfunction. Brew cycle will not start 1. No water Water lines and valves to the brewer must be open. Check for voltage across the black 2. No power or incorrect voltage to the brewer and white terminals at the terminal block. 3. TEA/OFF/COFFEE Switch a) Check Switch position, confirm- ing that it is in either "TEA" or "COF- FEE" position b
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TROUBLESHOOTING (cont.) BREW CIRCUIT PROBLEM PROBABLE CAUSE REMEDY Consistently low beverage level in 1. Brew volume (TEA or COFFEE) Refer to Adjustments and Optional NOTE: All volumes to run with Settings to set brew volume. See the dispenser or beverage over- flows dispenser sprayhead attached. page 7. Using a stop watch or sec- ond hand, time the length of the brew cycle. Record this time inside the top lid. If service is ever needed again, use the time as reference to determine if time has
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TROUBLESHOOTING (cont.) BREW CIRCUIT PROBLEM PROBABLE CAUSE REMEDY Dripping from sprayhead 1. Lime build up Inspect the tank assembly for ex- cessive lime deposits. Delime as re- quired. 2. Brew Solenoid Valves Refer to Service - Brew Solenoid Valves for testing procedures. See pages 16 or 17 Weak beverage 1. Sprayhead A seven-hole stainless steel spray- head must be used for proper ex- traction. 2. Water temperature With the "TEA/OFF/COFFEE" Switch in the "COFFEE" position, place an empty brew
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TROUBLESHOOTING (cont.) BREW CIRCUIT PROBLEM PROBABLE CAUSE REMEDY Dry tea leaves or coffee grounds re- 1. Sprayhead Make sure sprayhead is present and main in the funnel holes are clear and unobstructed. There should be seven separate streams of water coming out of the sprayhead. ® paper filter must be 2. Funnel loading The BUNN centered in the funnel and the bed of tea leaves or coffee grounds lev- eled by shaking gently. 29466 082300 Page 12
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TROUBLESHOOTING (cont.) HEATING CIRCUIT PROBLEM PROBABLE CAUSE REMEDY Remove probe and grommet. Look Water does not heat to proper 1. Water not touching temperature into hole on tank lid. Water must temperature probe be within one inch from top of tank. IMPORTANT: Make sure no tem- Refer to Service - Temperature perature tests are taken before the 2. Temperature Probe Probe for testing procedures. See ready light is "ON". Tank tempera- page 23 ture must be stabilized before read- ings are taken.
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DIAGNOSTICS Intermittent flashing of the READY indicator 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?) Sheath of temperature probe dry for 10 minutes after power-up Temperature probe wiring Fill valve wiring, function, & strainer Green wire between tank and circuit board 2 Low Tank Level Fault - Water pressure (Is water sh
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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. The brewer should be disconnected from the power source when servicing, except when electrical tests are required and the test procedure spe- cific
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SERVICE (cont.) 6. Check the iced tea solenoid valve for coil action. BREW SOLENOID VALVE (ICED TEA) Connect the brewer to the power source. With TEA/ OFF/COFFEE switch in the "TEA" position press the start switch and listen carefully in the vicinity of the solenoid valve for a "clicking" sound as the coil magnet attracts. 7. Disconnect the brewer from the power source. If the sound is heard as described and water will not pass through the solenoid valve, there may be a block- age in the water
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SERVICE (cont.) LIMIT THERMOSTAT 5. With a voltmeter, check the voltage across the ex- posed terminal of the limit thermostat and the white wire on the tank heater terminal. Connect the brewer to the power source. The indication must be 120 volts ac. 6. Disconnect the brewer from the power source. If voltage is present as described, reconnect the black wire to the limit thermostat. The limit thermostat is operating properly. If voltage is not present as described, replace the limit thermostat.
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SERVICE (cont.) 6. Viewing the switch from the rear, check for conti- TEA/OFF/COFFEE SWITCH nuity across the center and left terminals of the top row when switch is in the "TEA" position and the center and right terminals of the top row when the switch is in the "COFFEE" position. 7. Viewing the switch from the rear, check for conti- nuity across the center and left terminals of the second row from the bottom when switch is in the "TEA" position. Also check for continuity across the center and r
