Bunn TB6 Service & Repair Manual
  1. Manuals
  2. Brands
  3. Bunn Manuals
  4. Coffee Maker
  5. TB6
  6. Service & repair manual

Bunn TB6 Service & Repair Manual

Tb3 series; tb6 series
Hide thumbs Also See for TB6:
Table of Contents

Advertisement

Quick Links

TB3/TB6 Series
Including: TB3; TB3-LP;
TB3Q; TB3Q-LP; TB6; TB6Q
STARTING WITH SERIAL NUMBER: TU00020000
SERVICE & REPAIR MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601
FAX: (217) 529-6644
41722.0000A 07/09 ©2009 Bunn-O-Matic Corporation

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TB6 and is the answer not in the manual?

Questions and answers

Related Manuals for Bunn TB6

Summary of Contents for Bunn TB6

  • Page 1 TB3/TB6 Series Including: TB3; TB3-LP; TB3Q; TB3Q-LP; TB6; TB6Q STARTING WITH SERIAL NUMBER: TU00020000 SERVICE & REPAIR MANUAL BUNN-O-MATIC CORPORATION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 41722.0000A 07/09 ©2009 Bunn-O-Matic Corporation...
  • Page 2 SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND. In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

  • Page 3: Table Of Contents

    Tank Heater ... 13 Lighted ON/OFF Switch ... 14 Non Lighted ON/OFF Switch ... 15 Start Switches ... 16 Inlet Solenoids ... 17 Dual Timer (TB3/TB6) ... 18 Digital Timer (TB3Q/TB6Q) ... 20 Schematic Wiring Diagrams ... 22 41722 070209 Page 3...

  • Page 4: 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.
  • Page 5 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont.) Water is not hot PROBABLE CAUSE 3. ON/OFF Switch 4. Start Switch 5. Timer 6. Solenoid Valve 7. Water strainer/flow control (If equipped) 1. (A) Limit Thermostat (B) Thermal Cut-Off (230V) CAUTION - Do not eliminate or bypass limit thermostat or thermal cut-off.
  • Page 6 TROUBLESHOOTING (cont.) PROBLEM Inconsistent beverage level in dispenser Consistently low beverage level in the dispenser Spitting or excessive steaming PROBABLE CAUSE 1. Strainer /flow control (If equipped) 2. Syphon System 3. Lime Build-up CAUTION - Tank and tank com- ponents should be delimed regularly depending on local water conditions.
  • Page 7 TROUBLESHOOTING (cont.) PROBLEM 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 PROBABLE CAUSE 2. Control Thermostat 1. Syphon System 2.
  • Page 8 1. Solenoid 2. Plumbing Lines 3. Water Supply Page 8 REMEDY BUNN® paper filters must be used for proper extraction. A fine or drip grind must be used for proper extraction. A six-hole stainless steel spray- head must be used for proper extraction.
  • Page 9 TROUBLESHOOTING (cont.) PROBLEM Brewer is making unusal noises (cont.) PROBABLE CAUSE 4. Tank Heater Page 9 REMEDY Remove and clean lime off the tank heater. 41722 070209...

  • Page 10: Component Acess

    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.
  • Page 11 SERVICE (cont.) CONTROL THERMOSTAT (cont.) source. The indication must be: a) 120 volts ac for two wire 120 volt models. b) 200 to 230 volts ac for two wire 200 volt or 230 volt models. 8. Disconnect the brewer from the power source. If voltage is present as described, reinstall the capillary tube into the tank to the line 4.5"...

  • Page 12: Limit Thermostat

    SERVICE (cont.) LIMIT THERMOSTAT FIG. 12-1 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 13: Tank Heater

    SERVICE (cont.) TANK HEATER FIG. 13-1 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. 2. Turn on thermostat. Check the voltage across the black and white wires on 120 volt models or the black and red wires for 200 volt models and 230 volt models with a voltmeter.

  • Page 14: Lighted On/Off Switch

    SERVICE (cont.) LIGHTED ON/OFF SWITCH (TB3/TB3Q) P/N 37080.0000 Orange light FIG. 14-1 LIGHTED ON/OFF SWITCH Location: The ON/OFF switch is located in the front of the hood, above and to the left of the brew funnel. Test Procedure: Brewers W/Out Half Batch or Sweetener Options 1.

  • Page 15: Non Lighted On/Off Switch

    SERVICE (cont.) ON/OFF SWITCH-TB6/Q (Sweetner ½ Batch Option-TB3/Q) P/N 03356.0003 Non Lighted FIG. 15-1 NON LIGHTED ON/OFF SWITCH Location: The switch is located on the front control panel. Test Procedure: 1. Disconnect the brewer from the power source. 2. Disconnect the wires from switch terminals.

  • Page 16: Start Switches

    SERVICE (cont.) START SWITCHES P/N 37079.0000 P/N 37080.0001 Non Lighted Green ready light FIG. 16-1 START SWITCHES Location: The start switch is located in the front of the hood, above and to the right of the brew funnel. Test Procedure: 1.

  • Page 17: Inlet Valves

    SERVICE (cont.) INLET VALVES FIG. 17-1 INLET VALVES Location: The solenoid valve(s) are located inside the trunk on the lower center part of the component bracket. So- lenoids in the early models are located in the hood. Test Procedures: 1. Check the solenoid valve for coil action. With "ON/ OFF"...

  • Page 18: Dual Timer (Tb3/Tb6)

    SERVICE (cont.) BREW/DILUTION TIMER (TB3 & TB6) FIG. 18-1 BREW/DILUTION TIMER Location: The timer is located in left side of the hood. Test Procedure: NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board.
  • Page 19 SERVICE (cont.) BREW/DILUTION TIMER (TB3 & TB6) (cont.) FIG. 19-1 BREW/DILUTION TIMER TRIACS Triacs: TH-1/MV-1 Brew solenoid TH-2/MV-2 Dilution solenoid Page 19 41722 070209...

  • Page 20: Digital Timer (Tb3Q/Tb6Q)

    SERVICE (cont.) DIGITAL BREW TIMER (TB3Q & TB6Q) FIG. 20-1 DIGITAL TIMER Location: The timer is located in left side of the hood. Test Procedure NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board.
  • Page 21 SERVICE (cont.) DIGITAL BREW TIMER (TB3Q & TB6Q) (cont.) FIG. 21-1 DIGITAL TIMER TRIACS Triacs: Q-1/MV-2 Brew solenoid output MV-1 Line in Page 21 41722 070209...

  • Page 22: Single Phase

    BLU/BLK WHI/VIO WHI/VIO BREW WHI/ORA TIMER WHI/GRN WHI/YEL 120 VOLTS AC 2 WIRE SINGLE PHASE 37234.0001A 08/04 © 2004 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM SW. & LIMIT THERMOSTAT THERMOSTAT BLU/BLK WHI/VIO 230 VOLTS AC 2 WIRE SINGLE PHASE 37234.0003A 11/04 © 2004 BUNN-O-MATIC CORPORATION...
  • Page 23 6 5 4 3 2 1 WHI/VIO DILUTION WHI/VIO WHI/BLU BREW WHI/VIO WHI/GRN 100 VOLTS AC 120 VOLTS AC 2 WIRE + GND 37234.0007A 02/08 © 2008 BUNN-O-MATIC CORPORATION SINGLE PHASE SWITCH & THERMOSTAT OPTIONAL READY INDICATOR BLU/BLK START SWITCH WHI/ORN...

  • Page 24: Schematic Wiring Diagram

    DILUTION WHI/BLU WHI/VIO BREW WHI/VIO WHI/GRN 100 VOLTS AC 120 VOLTS AC 2 WIRE + GND SINGLE PHASE 37234.0008B 10/08 © 2008 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM TB3Q Earth Ground LIMIT THERMOSTAT BLU/BLK "KEEP WARM HEATER" WHI/VIO WHI/VIO BREW WHI/ORA...
  • Page 25 SCHEMATIC WIRING DIAGRAM TB3Q W/SWEETENER & EMPTY BAG DETECT LIMIT THERMOSTAT THERMOSTAT BLU/BLK UNSWEET/OFF/SWEET WHI/VIO BREW TIMER BRN/WHI SWTNR WHI/BLU 37234.0010A 04/08 © 2008 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM TB3A OPTIONAL READY INDICATOR SWITCH & LIMIT THERMOSTAT THERMOSTAT BLU/BLK ON/OFF SWITCH WHI/VIO DILUTION...
  • Page 26 SW1C WHI/VIO WHI/ORN WHI/GRN TIMER WHI/YEL WHI/BLU LEFT 120 VOLTS A C DILUTION 2 WIRE 41974.0000A 03/09 © 2009 BUNN-O-MATIC CORPORATION SINGLE PHASE Chassis Ground Earth Ground TANK HEATER "KEEP WARM" HEATER START SWITCH SW2A SW1D BREW RIGHT Page 26...
  • Page 27 SW1B SW1C WHI/VIO WHI/ORN WHI/GRN TIMER WHI/YEL LEFT 120 VOLTS A C DILUTION 2 WIRE 41975.0000A 03/09 © 2009 BUNN-O-MATIC CORPORATION SINGLE PHASE Page 27 Chassis Ground Earth Ground TANK HEATER "KEEP WARM" HEATER START SWITCH SW2A SW1D BREW RIGHT...

This manual is also suitable for:

Tb6qTb3Tb3-lpTb3qTb3q-lp

Table of Contents

Save PDF