Bunn Dual TF - Manuals

Bunn Dual TF – Manual in PDF format online.

Manuals:

Manual

Manual Bunn Dual TF

Summary

Page 2 - INTRODUCTION; Grinder. The brewer is specifically designed for use with BUNN; WARRANTY; workmanship for two years from the date of installation.

Page 2 INTRODUCTION This equipment will brew two half-gallon, gallon, or gallon and three forths 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 andis designed to interface with a BUNN ® Grinder. The brewer ...

Page 3 - ELECTRICAL REQUIREMENTS; WARNING; HOT WATER

Page 3 Requires 2-wire, groundedservice rated 200 to 240 voltsac, 30 amp, single phase 50or 60 Hz. Requires 3-wire, grounded ser-vice rated 120/208 or 120/240volts ac, 30 amp, single phase,60 Hz. 120V A.C. 120V A.C. 120V A.C. 208 or 240V A.C. L2 RED L2 RED WHITE NEUTRAL L1 BLACK L1 BLACK 200 or 240V...

Page 6 - TROUBLESHOOTING

Page 6 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-MaticTechnical Service Department. • Inspection, testing, and repair of e...

Page 12 - SERVICE

Page 12 SERVICE This section provides procedures for testing and replacing various major components used in thisbrewer should service become necessary. Refer toTroubleshooting for assistance in determining thecause of any problem. WARNING - Inspection, testing, and repair of electri- cal equipment s...

Page 13 - BYPASS VALVE; WHI/GRN to Dispense Valve

Page 13 SERVICE (cont.) BYPASS VALVE Location: The bypass valves are located inside the right front and the center front of the hood. Test Procedures:1. Disconnect the brewer from the power source and place 1-3/4 gallon server under funnel. 2. Disconnect the white/green wire and the white/ violet wi...

Page 14 - BREW SELECTOR SWITCH

Page 14 SERVICE (cont.) BREW SELECTOR SWITCH Location: The brew selector switches are located in the front left and right side of the hood. Test Procedure:Timer: Left or Right1. Disconnect the brewer from the power supply.2. Separate the connector on the selector switch harness from the brew timer c...

Page 15 - Install the new switch. The positioning tab must be

Page 15 SERVICE (cont.) BREW SELECTOR SWITCH (cont.) P991 TAN GRY PNK To Left or Right Timer WHI/VIO to Left or RightBy-Pass Valve WHI/RED to Left or RightDispense Valve GRY from Left or Right Selector Switchto GRY Lead on Interface Socket PNK from Left Selector Switchto Grinder Switch (Lower Left)P...

Page 16 - CONTACTOR ASSEMBLY; The contactor assembly is located inside the

Page 16 SERVICE (cont.) CONTACTOR ASSEMBLY Location: The contactor assembly is located inside the hood just to the rear of the right dispense valve. Test Procedures: Mechanical Thermostat (Brewers with or withoutRecovery Booster)1. Disconnect the brewer from the power source.2. Disconnect the red wi...

Page 17 - ing contactor to the inside of the hood.

Page 17 SERVICE (cont.) CONTACTOR ASSEMBLY (cont.) Test Procedures : Electronic Control (Brewers w/Recovery Booster)1. Disconnect the brewer from the power source.2. Disconnect the gray wire from the black wire on the contactor coil and white /brown wire from theremaining black wire on the contactor...

Page 19 - DISPENSE VALVE; Dispense valves are located inside the hood in

Page 19 SERVICE (cont.) CONTROL THERMOSTAT (cont.) BLU to Left & Right Ready LightsBLU to RED Lead From Liquid Level Switch BLK to BLK Lead of Contactor Coil BLK toLeft & Right Ready Lights P780 DISPENSE VALVE P975 Location: Dispense valves are located inside the hood in the center of each s...

Page 21 - LIQUID LEVEL CONTROL SYSTEM DOES NOT; REFILL; The water must be heated to the preset tempera-

Page 21 SERVICE (cont.) PROBLEM: LIQUID LEVEL CONTROL SYSTEM DOES NOT REFILL PROBLEM: LIQUID LEVEL CONTROL OVERFLOWS RETRY NO YES YES NO YES REPLACE CONTROL ASSEMBLY (1) DRAIN CUP (4) OVERFLOW ? OVERFLOW ? NO OVERFLOW ? REPLACE SOLENOID VALVE (14) DRAIN CUP (4) DISCONNECT WIRE SOLENOID VALVE (14) FR...

Page 22 - WATER NOT HOT ENOUGH

Page 22 YES YES YES YES NO NO NO NO YES NO NO MEASURE VOLTAGE AT TANK HEATER (5) VOLTAGE PRESENT REPLACE TANK HEATER (5) LIMIT THERMOSTAT (6) OK ? REPLACE LIMIT THERMOSTAT (6) REPLACE CONTROL ASSEMBLY (1) MEASURE VOLTAGE AT TANK HEATER (5) VOLTAGE PRESENT REPLACE TRIAC (17) CHECK FOR SPLIT TANK HEAT...

Page 23 - WATER BOILS

Page 23 SERVICE (cont.) ELECTRONIC CONTROLS (cont.) PROBLEM: WATER BOILS YES NO NO NO NO REPLACE CONTROL ASSEMBLY (1) REPLACE TRIAC (17) CHECK FOR SPLIT TANK HEATER (5) DRAIN CUP (4) RETRY LED (13)(15) ON WHILE BOILING DISCONNECT BLUE WIRE FROM CONTROL BOARD PIN #7 RETRY STILL BOILING ? REPLACE CONT...

Page 25 - PNK to PNK Lead from Interface Socket; GRINDER SELECTOR SWITCH; BLU to Electronic Control #7

Page 25 Test Procedure:1. Disconnect the brewer from the power source.2. Remove all wires from the switch terminals.3. Place the selector switch in the left position.4 Check for continuity across the center and rightterminals on the rear of the switch. 5. Continuity must not be present across the ce...

Page 27 - LIMIT THERMOSTAT

Page 27 SERVICE (cont.) LEVEL CONTROL BOARD AND LEVEL PROBE(Electro/mechanical only) (cont.) els and three wire 120/240 volt models. b.) 200 to 240 volts ac for two wire 200 or 240 volt models. 17. Disconnect the brewer from the power source. If voltage is present as described, reinstall the probe,t...

Page 30 - OVERFLOW PROTECTION SWITCH

Page 30 Location: The overflow protection switch is located in- side the hood on the center of the tank inside thecopper overflow cup. To test the overflow protection switch, access will also be needed to the level control board orelectronic control assembly and terminal block. Test Procedure:1. Dis...

Page 34 - START SWITCHES; RIGHT

Page 34 SERVICE (cont.) SOLENOID VALVE (Inlet) (cont.) P799 VIO to Level Control Board T1 (Electro/mechanical)WHI/BLU to Control Assy #1 (Electronic) WHI to Level Control Board T3(120/208V or 120/240V Electro/mechanical)WHI to Terminal Block (120/208V or 120/240V Electronic)Red to Level Control Boar...

Page 35 - TANK HEATERS

Page 35 wires, the tank heaters are operating properly.If continuity is not present as described, replace thetank heater(s). NOTE - If the tank heater remains unable to heat, remove and inspect the heater for cracks in the sheath. Electronic Control Models:1. Disconnect the brewer from the power sou...

Page 37 - WHI/ORA TL3 to Right Start Switch Terminal; ORA TL3 to Left Start Switch Terminal; LEFT

Page 37 SERVICE (cont.) Timers (Early Models)(cont.) P1070 2 2 2 1.5 1 1 1 .5 2.5 MINUTES MINUTES MINUTES P/N 24486-0000 120 VAC BUNN-O-MATIC 3 3 3 4 4 5 5 6 6 7 8 2 2 2 1.5 1.5 1 1 1 .5 .5 2.5 2.5 MINUTES MINUTES MINUTES MINUTES MINUTES MINUTES P/N 24486-0000 120 VAC P/N 24486-0000 120 VAC BUNN-O-M...

Page 39 - LEFT TIMER; YEL; Modifying brew volumes.

Page 39 J1 J2 TL3 TL5 TL4 TL2 TL1 SET LOCK SET LOCK P2037 SERVICE (cont.) TIMERS (Late Models)(cont.) LEFT TIMER RIGHT TIMER YEL WHI/YEL wire to TL5 WHI/BRN WHI/GRN wire to TL4 PNK PNK wire to TL3 WHI WHI wire to TL2 (120V Two Pole,120/208V or 120/240V Three PoleTerminal Block) RED RED wire to TL2 (...