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INTRODUCTION This equipment will brew two half-gallon, gallon, or gallon and a half batches of coffee into awaiting servers at the push of a button. The brewer is also equipped with a hot water faucet for allied beverage use and is designed ® ® to interface with a BUNN Grinder. The brewer is specifically designed for use with a BUNN 1.5 GPR server. It is only for indoor use on a sturdy counter or shelf. WARRANTY Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commer
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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 front panel beneath the sprayheads. Models with electronic control assemblies: Place the tank heater switch at the top of the control assembly in the “OFF” position. Models with electro/mechanical thermostats: Rotate the con
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INITIAL SET-UP (cont.) Models with electro/mechanical thermostats: Rotate the control thermostat knob fully clockwise to the “ON” position and replace the front panel. 4. Wait approximately twenty minutes for the water in the tank to heat to the proper temperature. 5. Place an empty server beneath either brew station and the ON/OFF switch in the upper ("ON") position. 1 6. Triple-set Timers only: Place the brew station Selector switch in the 1 ⁄2 gallon position. 7. (A) Initiate a brew cycle; af
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OPERATING CONTROLS BREW SELECTOR SWITCH (Triple - set timer models only) 1 1 Placing the switch in the ⁄2 Gal, 1 Gal, or 1 ⁄2 Gal position selects the amount of coffee to be brewed in subsequent brew cycles. Repositioning this switch after a brew cycle has been initiated does not change the brew batch in progress. ON/OFF SWITCH Placing the switch in the unlighted lower position cuts power to the brew station warmer and stops brewing. Stopping a brew cycle after it has been started will not stop
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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.) 3. ON/OFF switch Refer to Service - ON/OFF switch for testing procedures. See page 31 4. Start switch Refer to Service - Start switch for testing procedures. See page 36 5. Timer Refer to Service - Timer for testing procedures. See page 38 or 41 6. Dispense Valve Refer to Service - Dispense valve for testing procedures. See page 21 7. Control Assembly (Electronic) Refer to Service - Control assembly for tes
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TROUBLESHOOTING (cont.) Probable Cause Remedy Problem 1. Brew Selector switch Refer to Service - Selector switch for Beverage level will not adjust testing procedures. See page 15 (Selector switch in any position) 1. Solenoid valve Refer to Service - Solenoid valve for Water flows into tank continuously . testing procedures. See page 35 2A. Level control board and level Refer to Service - Level control board probe (Electro/mechanical) for test procedures. See page 28 2B. Control assembly (Electr
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TROUBLESHOOTING (cont.) Problem Remedy Probable Cause Water from tank is not hot (cont.). Refer to Service - Relay for testing 6. Relay (Brewers with Recovery procedures. See page 33 Booster) Server warmer is not hot. Refer to Service - ON/OFF switch for 1. ON/OFF switch testing procedures. See page 31 Refer to Service - Warmer element for testing procedures. See page 43 2. Warmer element Spitting or unusual steaming from Refer to Service - Control thermo- 1A. Control thermostat (Electro/me- sp
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TROUBLESHOOTING (cont.) Remedy Problem Probable Cause Inconsistent beverage level in 3. Dispense valve Refer to Service - Dispense valve for testing procedures. See page 21 server (cont.). Adjust the timer as required to Consistently high or low beverage 1. Timer adjustment level in server. achieve the recommended volume for each brew cycle. Dripping from sprayhead. 1. Dispense valve Refer to Service - Dispense valve for testing procedures. See page 21 Water overflows filter. 1. Bypass valve Ref
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Weak beverage (cont.) 3. Sprayhead B.O.M. sprayhead #01082.0002 should be used to properly wet the bed of ground coffee in the funnel. ® The BUNN paper filter should be 4. Funnel loading centered in the funnel and the bed of ground coffee leveled by gentle shak- ing. Empty the server, remove its cover, 5. Water temperature and place the server on the warmer. Place empty funnel over the server entrance, with ON/OFF switch in the "ON" position
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SERVICE (cont.) WHI/VIO to Left or Right By-Pass Valve To Left or Right Timer WHI/RED to Left or Right Dispense Valve TAN GRY to Left or Right Selector Switch GRY to GRY Lead on Interface Socket PNK PNK from Left Switch to Grinder Switch (Lower Left) PNK from Right Switch to Grinder Switch (Lower Right) TAN to Left or Right Selector Switch to TAN Lead on Interface Socket P776 FIG. 4 BREW SELECTOR SWITCH TERMINALS 27040 032201 Page 16
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SERVICE (cont.) BLK T2 to Left Tank Heater RED L1 to Terminal Block BLK T2 to Right Tank Heater (Red Insert) CONTACTOR ASSEMBLY (cont.) RED T1 to Left Tank Heater BLK L2 to Terminal Block RED T1 to Right Tank Heater Test Procedures : (Black Insert) Electronic Control (Brewers w/Recovery Booster) 1. Disconnect the brewer from the power source. BLK to WHI Lead from the 2. Disconnect the gray wire from the black wire on Three Pole 120/208V or 120/240V Terminal Block the rear of the contactor coil
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SERVICE (cont.) CONTROL THERMOSTAT (cont.) Removal and Replacement: 1. Remove wires from the control thermostat. 2. Remove the thermostat capillary bulb by firmly pulling up on the capillary tube at the tank lid. This will disengage the grommet from the tank lid. BLU to Left & Right Ready Lights 3. Remove the #8-32 slotted head screw holding the BLU to RED Lead from Liquid Level Switch control thermostat to the component bracket. BLK to BLK Lead of Contactor Coil 4. Slide the grommet to the lin
