Bunn TB6Q, TB6 User Manual

4.19 Mb

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

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:

1)All equipment other than as specified below: 2 years parts and 1 year labor.

2)Electronic circuit and/or control boards: parts and labor for 3 years.

3)Compressors on refrigeration equipment: 5 years parts and 1 year labor.

4)Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis: parts and labor for 3 years or 30,000 pounds of coffee, whichever comes first.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under warranty.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make modifications to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and should not be relied upon.

If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for the equipment.

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S 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.

BrewWISE, BrewLOGIC, BrewMETER, BrewWIZARD, Bunn Gourmet, BUNN Gourmet Ice, BUNN Pour-O-Matic, BUNN, Bunn-OMatic, Bunn-O-Matic, BUNNlink, BUNNserve, BUNNSERVE, BUNN Espress, Cool Froth, DBC, Dr. Brew, Dual, EasyClear, EasyGard, Easy Pour, FlavorGard, Gourmet Ice, Gourmet Juice, High Intensity, IMIX, Infusion Series, Intellisteam, Quality Beverage Equipment Worldwide, The Mark of Quality in Beverage Equipment Worldwide, My Café, PowerLogic, Safety-Fresh, Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, System III, ThermoFresh, 392, AutoPOD, AXIOM, Beverage Profit Calculator, Beverage Bar Creator, BUNNsource, Coffee At Its Best, Digital Brewer Control, Nothing Brews Like a BUNN, Pouring Profits, Pulse Wave, Signature Series, Smart Heat, Tea At Its Best, The Horizontal Red Line, Titan, Ultra, are either trademarks or registered trademarks of Bunn-O-Matic Corporation.

Page 2

41722 012609

 

 

Contents

Trouble Shooting..............................................................................................................

4

Component Acess ..........................................................................................................

10

Control Thermostat.........................................................................................................

10

Limit Thermostat............................................................................................................

12

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

Page 3

41722 070209

 

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 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.

Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.

The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.

Make certain that all plumbing connections are sealed and electrical connections tight and isolated.

This brewer is heated at all times. Keep away from combustibles.

WARNING – • Exercise extreme caution when servicing electrical equipment.

Unplug the brewer when servicing, except when electrical tests are specified.

Follow recommended service procedures

Replace all protective shields or safety notices

PROBLEM

PROBABLE CAUSE

REMEDY

Brew cycle will not start

1.

No water

 

2.

No power or incorrect voltage

 

to the brewer

Water lines and valves to the brewer must be open.

(A1) Check the wire crimps for

120 volts across the black and white terminals on two wire 120 volt brewers.

(A2) Check the wire crimps for

200 volts on "B Series" brewers or 230 volts on "A Series" brewers across the red and black terminals.

(B) Check circuit breakers or fuses.

Page 4

41722 070209

 

TROUBLESHOOTING (cont.)

 

 

 

PROBLEM

PROBABLE CAUSE

REMEDY

Brew cycle will not start (cont.)

3. ON/OFF Switch

Refer to Service - ON/OFF

 

 

 

Switch for testing.

 

4.

Start Switch

Refer to Service - Start Switch

 

 

 

for testing procedures.

 

5.

Timer

Refer to Service - Timer for test-

 

 

 

ing procedures.

 

6.

Solenoid Valve

Refer to Service - Solenoid Valve

 

 

 

for testing procedures.

 

7.

Water strainer/flow control

(A) Direction of flow arrow must

 

 

(If equipped)

be pointing towards brewer.

 

 

 

(B) Remove the strainer/flow

 

 

 

control and check for obstruc-

 

 

 

tions. Clear or replace.

Water is not hot

1. (A) Limit Thermostat

Refer to Service - Limit Ther-

 

 

(B) Thermal Cut-Off (230V)

mostat for testing procedures.

 

CAUTION - Do not eliminate

Thermal Cut-Off for testing

 

or bypass limit thermostat or

procedures.

 

thermal cut-off. Use only BOM

 

 

replacement parts.

 

 

2.

Control Thermostat

Refer to Service - Control Ther-

 

 

 

mostat for testing procedures.

 

3.

Tank Heater

Refer to Service - Tank Heater

 

 

 

for testing procedures.

Page 5

41722 070209

 

TROUBLESHOOTING (cont.)

 

PROBLEM

PROBABLE CAUSE

Inconsistent beverage level in

1. Strainer /flow control

dispenser

(If equipped)

2. Syphon System

3. Lime Build-up

CAUTION - Tank and tank components should be delimed regularly depending on local water conditions. Excessive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious leaks.

4. Water Pressure

Consistently low beverage level

1.

Timer

in the dispenser

 

 

 

2.

Strainer/flow Control

 

(If equipped)

Spitting or excessive steaming

1. Lime Build-up

 

CAUTION - Tank and tank com-

 

ponents should be delimed

 

regularly depending on local

 

water conditions. Excessive min-

 

eral build-up on stainless steel

 

surfaces can initiate corrosive

 

reactions resulting in serious

 

leaks.

 

Page 6

REMEDY

(A)Direction of flow arrow must be pointing towards the brewer.

(B)Remove the strainer/flow control and check for obstruction. Clear or replace.

The brewer must be level or slightly lower in front to syphon properly.

Inspect the tank assembly for excessive lime deposits. Delime as required.

The water pressure to the brewer must be at least 20 psi (138kPa) and minimum 1.0 gpm flow rate.

Timer dial must indicate at least two minutes and fifteen seconds. Refer to Operating Manual.

(A)Direction of flow arrow must be pointing towards brewer.

(B)Remove the strainer/flow control and check for obstructions. Clear or replace.

Inspect tank assembly for excessive lime deposits. Delime as required.

41722 070209

TROUBLESHOOTING (cont.)

PROBLEM

Spitting or excessive steaming (cont.)

Dripping from sprayhead

Water flows into tank continuously (ON/OFF Switch "ON")

Water flows into tank continuously (ON/OFF Switch "OFF")

Beverage overflows dispenser

PROBABLE CAUSE

2. Control Thermostat

1.Syphon System

2.Lime Build-up

CAUTION - Tank and tank components should be delimed regularly depending on local water conditions. Excessive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious leaks.

3. Solenoid Valve

1. Timer

1. Solenoid Valve

1.Dispenser

2.Timer

3.Solenoid Valve

Page 7

REMEDY

Refer to Service - Control Thermostat for testing procedures.

The brewer must be level or slightly lower in front to syphon properly.

Inspect the tank assembly for excessive lime deposits. Delime as required.

Remove the solenoid valve and clear any obstructions. Rebuild or replace the valve if necessary.

Refer to Service - Timer for testing procedures.

Remove the Solenoid Valve and clean any obstruction. Rebuild or replace the valve if necessary.

The dispenser must be completely empty before starting a brew cycle.

Refer to Service - Timer for testing procedures.

Remove the Solenoid Valve and clean any obstruction. Rebuild or replace the valve if necessary.

41722 070209

TROUBLESHOOTING (cont.)

 

 

PROBLEM

PROBABLE CAUSE

Weak beverage

1. Filter Type

 

2.

Coffee Grind

 

3.

Sprayhead

 

4.

Funnel Loading

 

5.

Water Temperature

Dry coffee grounds remain in the

1. Funnel Loading

funnel

 

Brewer is making unusal noises

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 sprayhead must be used for proper extraction.

The BUNN® paper filter must be centered in the funnel and the bed of ground leveled by gentle shaking.

Place an empty funnel on an empty dispenser beneath the sprayhead. Initiate a brew cycle and check the water temperature immediately below the sprayhead with a thermometer. The reading should not be less than 200°F (93°C). Adjust the control thermostat to increase the water temperature. Replace if necessary.

The BUNN® paper filter must be centered in the funnel and the bed of grounds leveled by gently shaking.

The nut on the solenoid must be tight or it will vibrate during operation.

Plumbing lines should not resting on the counter top.

(A)The brewer must be connected to a cold water line.

(B)Water pressure to the brewer must not exceed 90 psi (620 kPa). Install a regulator if necessary to lower the working pressure to approximately 50 psi (345 kPa).

41722 070209

TROUBLESHOOTING (cont.)

 

 

PROBLEM

PROBABLE CAUSE

REMEDY

Brewer is making unusal noises

4. Tank Heater

Remove and clean lime off the

(cont.)

 

tank heater.

Page 9

41722 070209

 

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 electrical equipment should be performed only by qualified service personnel. The brewer should be unplugged when servicing, except when electrical tests are required and the test procedure specifically states to plug-in the brewer.

COMPONENT ACCESS

WARNING - Disconnect the brewer from the power source before the removal of any panel or the replacement of any component.

All components are accessible by the removal of the top cover, front inspection panel, and rear panel.

FIG. 10-1 COMPONENT ACCESS

CONTROL THERMOSTAT

FIG. 10-2 CONTROL THERMOSTAT

Location:

The control thermostat is located in the hood.

Test Procedures:

1.Disconnect the brewer from the power source.

2.Locate the blue wire on the control thermostat.

3.Check the voltage across the blue/black wire on the control thermostat and the white wire on the tank heater on 120V models or red wire on the tank heater on two wire 200V or 230V models with a voltmeter. Connect the brewer to the power 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 or 230 volt models.

4.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the wiring diagrams and check the brewer wiring harness.

5.Locate the black wire on the control thermostat.

6.Gently remove the capillary bulb and grommet from the tank.

7.Check the voltage across the black wire of the control thermostat and the white wire on the tank heater on 120V models or red wire on the tank heater on two wire 200V or 230V models with a voltmeter when the control thermostat is turned fully clockwise. Connect the brewer to the power

(CONTINUED)

Page 10

41722 070209

 

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" above the bulb, the control thermostat is operating properly.

If voltage is not present as described, replace the thermostat.

Removal and Replacement:

1.Disconnect the control thermostat wires.

2.Remove the thermostat capillary bulb by firmly pulling-up on the capillary at the tank lid. This will

disengage the grommet from the tank lid.

 

FIG. 11-1 CONTROL THERMOSTAT TERMINALS

 

3.Remove the one #6-32 screw securing the control thermostat to the component bracket inside the hood.

4.Slide the grommet to the line 4.5" above the bulb on the new capillary tube.

5.Insert the capillary bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid.

6.Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical position.

NOTE - The capillary tube must be clear of any electrical termination and not kinked.

7.Using one #6-32 screw, secure the control thermostat to the component bracket inside the hood.

8.Adjust the control thermostat as required.

FIG. 11-2 REPLACEMENT CONTROL THERMOSTAT

Page 11

41722 070209

 

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.

3.Check for continuity across the limit thermostat terminals with a ohmmeter.

Ifcontinuityispresentasdescribed,thelimitthermostat is operating properly.

If continuity is not present as described, replace the limit thermostat.

Removal and Replacement:

1.Remove all wires from limit thermostat terminals.

2.Carefully slide the limit thermostat out from under the retaining clip and remove limit thermostat.

3.Carefully slide the new limit thermostat into the retaining clip.

4.Refer to the schematics when reconnecting the wires.

to Tank

 

 

 

Lead from

 

 

 

Heater Switch

 

Control Thermostat

 

 

 

 

 

 

 

 

 

 

FIG. 12-2 LIMIT THERMOSTAT TERMINALS

Page 12

41722 070209

 

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. Connect the brewer to the power source. The indication must be:

a)120 volts ac for two wire 120 volt 20 amp models .

b)200 to 230 volts ac for two wire 200 or 230 volt models.

3.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4

If voltage is not present as described, refer to the Wiring Diagrams and check wiring harness.

4.Disconnect the wires from the tank heater terminals.

5.Check resistance value across tank heater terminals and compare to chart.

If resistance is present as described, reconnect the wires, the tank heater is ok.

HEATER

RESISTANCE

1680W-120V

7.9

- 9.2

1680W-100V

5.5

-6.4

1680W-230V

29.0

-33.7

TERMINAL TO SHEATH - INFINITE (OPEN)

If resistance is not present as described, replace the tank heater.

NOTE- If any resistance is read between sheath and either terminal, remove and inspect heater for cracks in the sheath.

Removal and Replacement:

1.Disconnect the brewer from the power supply.

2.Disconnect the water supply from the brewer.

3.Disconnect the wires from the limit thermostat.

4.Disconnect the wires from the tank heater terminals.

5.Remove sprayhead and the hex nut securing the sprayhead tube to the hood. Set aside for reassembly.

6.Remove the six #10 screws securing the tank lid to the tank.

7.Remove the tank lid with limit thermostat, sprayhead tube and tank heater.

8Remove the two hex nuts securing the tank heater to the tank lid. Remove tank heater with gaskets

and discard.

9.Install new tank heater with gaskets on the tank lid and secure with two hex nuts.

10.Install tank lid with limit thermostat, sprayhead tube and tank heater using six #10 screws.

11.Secure sprayhead tube to hood using hex nut removed in step 4.

12.Install sprayhead.

15.Reconnect the wires to the limit thermostat and tank heater.

16.Reconnect the water and power supply.

Page 13

41722 070209

 

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.Disconnect the brewer from the power source.

2.Remove the wires from all four terminals.

3.Check for continuity across the two terminals on the lower right of the switch (as shown). Continuity must be present across these terminals in the ON position.

If continuity is present as described, reconnect the wires, the switch is operating properly. If continuity is not present as described, replace the switch.

NOTE: No continuity will show across the upper left terminals of the lighted switch since the light is neon.

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the hood and gently push the switch through the opening.

3.Push the new switch into the opening and spread the clips to hold the switch captive in the hood.

4.Refer to FIG. 14-2 when reconnecting the wires.

BLACK

WHITE

WHT/VIO

P/N 37080.0000

2 WHT/VIO

FIG. 14-2 LIGHTED ON/OFF SWITCH TERMINALS

Page 14

41722 070209

 

SERVICE (cont.)

ON/OFF SWITCH-TB6/Q (Sweetner ½ Batch Option-TB3/Q)

 

 

WHI/VIO

 

BLACK

 

PINK

 

optional

P/N 03356.0003

½ batch

GRAY

Non Lighted

Optional

 

 

½ batch

FIG. 15-1 NON LIGHTED ON/OFF SWITCH

FULL/OFF/HALF-TB3/TB3Q

Location:

WHI/VIO

The switch is located on the front control panel.

 

Test Procedure:

WHITE

1. Disconnect the brewer from the power source.

 

2. Disconnect the wires from switch terminals.

BRN/WHI

3. Check for continuity across the center and right

 

and across center and left terminals in rows one

WHI/GRN

through four when the switch is in the oposite

 

position.

BLACK

 

If continuity is not present as described, replace the

WHI/VIO

switch.

UNSWEET/OFF/SWEET-TB3/TB3Q

If continuity is present as described, replace the wires

w/SWEETENER & EMPTY DETECT

the switch is operating properly.

 

Removal and Replacement:

WHI/VIO

1. Remove the wires from the switch terminals.

 

2. Remove the clips on the switch bezel inside the

 

hood and gently push the switch through the

YELLOW

opening.

 

3. Push the new switch into the opening from inside

BLACK

the hood and secure into place by pressing the

bezel through the front of the hood. Make sure

 

the clips on the switch bezel are locked around

 

the switch housing and spread the clips to hold

BRN/BLK

the switch captive in the hood.

LEFT/OFF/RIGHT-TB6

4. Refer to FIG. 15-2 when reconnecting the wires.

 

 

FIG. 15-2 ON/OFF SWITCH TERMINALS

Page 15

41722 070209

 

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.Disconnect the brewer from the power source.

2.Remove the wires from all four terminals.

3.Check for continuity across the two terminals on the right side of the switch when it is held in the lower position. Continuity must not be present across these terminals in the upper position.

4.Check for continuity across the two terminals on the left side of the switch when it is held in the lower position. Continuity must not be present

across these terminals in the upper position.

If continuity is not present as described, replace the switch.

If continuity is present as described, reconnect the wires, the switch is operating properly.

If continuity is not present as described, replace the switch.

NOTE: No continuity will show across the left terminals of the lighted switch since the light is neon.

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the hood and gently push the switch through the opening.

3.Push the new switch into the opening and spread the clips to hold the switch captive in the hood.

4.Refer to Fig. 16-2 when reconnecting the wires.

Page 16

WHI/YEL to Timer T5

WHI/ORN to Timer T3

P/N 37079.0000

WHI/YEL to Timer T5

GREEN

WHI/ORN to Timer T3

RED

P/N 37079.0000

WHI/YEL to Timer T5

BLK to T. Stat

WHI/ORN to Timer T3

BLU/BLK

P/N 37080.0001 to T. Stat

FIG. 16-2 START SWITCH TERMINALS

41722 070209

SERVICE (cont.)

 

 

 

 

INLET VALVES

 

 

 

three wire 120/240 volt models.

 

 

 

 

 

 

 

 

 

 

 

 

b) 200 to 230 volts ac for two wire 200 or 230 volt

 

 

 

 

 

 

models.

 

 

 

 

 

7.

Disconnect the brewer from the power source,

 

 

 

 

 

If voltage is present as described, proceed to #8

 

 

 

 

 

If voltage is not present as described, refer to Wiring

 

 

 

 

 

Diagrams and check brewer wiring harness.

 

 

 

 

 

8.

Check for continuity across the solenoid termi-

 

 

 

 

 

 

nals.

 

 

 

 

 

If continuity is present as described, reconnect the

 

 

 

 

 

white and black wire from the timer.

 

 

 

 

 

If continuity is not present as described, replace the

 

FIG. 17-1 INLET VALVES

 

 

 

 

 

 

 

solenoid valve.

 

 

 

 

Location:

 

 

Removal and Replacement:

The solenoid valve(s) are located inside the trunk

1.

Disconnect the brewer from the power source.

on the lower center part of the component bracket. So-

2.

Turn off the water supply to the brewer.

lenoids in the early models are located in the hood.

3.

Remove the wires from the solenoid.

 

 

 

 

 

Test Procedures:

 

 

4.

Disconnect the water lines to and from the solenoid

 

 

 

valve.

1. Check the solenoid valve for coil action. With "ON/

 

5.

Remove the two screws securing the solenoid

OFF" switch in the "ON' upper position press start

 

mounting bracket to the component bracket.

switch and listen carefully in the vicinity of the

 

6.

Install new solenoid valve to the component

solenoid valve for a" clicking" sound

as the coil

 

bracket.

magnet attracts.

 

 

 

 

 

7.

Securely fasten the water lines to and from the

2. Disconnect the brewer from the power source.

 

solenoid valve.

 

 

 

 

 

 

If the sound is heard as described and water will not

8.

Refer to schematics when reconnecting the

 

wires.

pass through the solenoid valve, there may be a block-

 

 

 

age in the water line before the solenoid valve or, the

 

 

solenoid valve may require inspection for wear, and

 

 

removal of waterborne particles.

 

 

 

 

If the sound is not heard as described,

proceed to

 

 

#3.

 

 

 

 

 

 

3. Disconnect the brewer from the power source.

4. Connect a voltmeter across the solenoid terminals (leave wires connected).

5. Connect the brewer to the power source. With the "ON/OFF" switch in the "ON" upper position press the start switch.

6. Check the voltage across the solenoid. The indication must be:

a) 120 volts ac for two wire 120 volt models and

Page 17

41722 070209

 

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.

1.Disconnect the brewer from the power source and remove the top cover.

2.With a voltmeter, check the supply voltage across terminals TL1 and TL2. Connect the brewer to the power source. Turn on the "ON/OFF" switch. The voltage must be:

a)120 volts ac for two wire 120 volt models.

b)200 to 230 volts ac on two wire 200 volt or 230 volt models.

3.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4.

If voltage is not present as described, refer to the Wiring Diagrams and check the wiring harness.

4.With a voltmeter, check the BREW output voltage across terminals TL2 and TL4; and the DILUTION output voltage across terminals TL2 and TL6.

Connect the brewer to the power source, turn on the "ON/OFF" switch and press the "START" switch. The voltage 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.

If voltage is present as described, the timer is operating properly.

If voltage is not present as described, disconnect the brewer from the power source and replace the timer.

Removal and Replacement:

1.Remove the two #6-32 screws, lock washers and spacers securing timer to bracket.

2.Disconnect all wires from the timer.

3.Refer to schematic and reconnect wires.

4.Install new timer to bracket with the two #6-32 screws, lock washers and spacers.

5.Adjust the timer as required.

SW1

J-1

TRM-1

TRM-2

TRM-3

TRM-4

TRM-5

TRM-6

J-4

FIG. 18-2 TIMER TERMINALS

Terminals:

J-1 ½ batch connector

J-4 Dilution delay time 1-2 (NORMAL), 3-4 (2x) SW-1 Programming Enable/Disable

TRM-1 White/Violet

L1 in from ON/OFF switch

TRM-2 White (Red)

Neutral (L2)

TRM-3

White/Orange

Start switch

TRM-4

White/Green

Brew solenoid

TRM-5

White/Yellow

Start switch

TRM-6

White/Blue

Dilution solenoids

Page 18

41722 070209

 

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

 

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.

1.Disconnect the brewer from the power source and remove the top cover.

2.With a voltmeter, check the supply voltage across terminals TL1 and TL2. Connect the brewer to the power source. Turn on the "ON/OFF" switch. The voltage must be:

a)120 volts ac for two wire 120 volt models.

b)200 to 230 volts ac on two wire 200 volt or 230 volt models.

3.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #4.

If voltage is not present as described, refer to the Wiring Diagrams and check the wiring harness.

4.With a voltmeter, check the output voltage across terminals TL1 and TL4. Connect the brewer to the power source, turn on the "ON/OFF" switch and press the "START" switch. The voltage 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.

If voltage is present as described, the timer is operating properly. If voltage is not present as described, proceed to #5.

5.With a voltmeter, check the input start voltage across terminals TL2 and TL5. Connect the brewer

to the power source, turn on the "ON/OFF" switch and press the "START" switch. The indication must be as follows:

a)120 volts ac for two wire 120 volt models.

b)200 to 230 volts ac on two wire 200 volt or 230 volt models.

If voltage is not present as described, refer to the Wiring Diagrams and check the wiring harness to the start switch.

If start voltage is present as described (but no output voltage), replace the timer.

Removal and Replacement:

1.Remove the two #6-32 screws, lock washers and spacers securing timer to bracket.

2.Disconnect all wires from the timer.

3.Refer to schematic and reconnect wires.

4.Install new timer to bracket with the two #6-32 screws, lock washers and spacers.

5.Adjust the timer as required.

 

TRM-1

 

TRM-2

SW1

TRM-3

 

J-2

TRM-4

 

J-1

TRM-5

 

FIG. 20-2 DIGITAL TIMER

Terminals:

J-2 ½ batch connector

J-1 Multi batch (NOT USED IN TB SERIES) SW-1 Programming Enable/Disable

TRM-1 White/Violet

L1 from ON/OFF switch

TRM-2

White (Red)

Neutral (L2)

TRM-3

White/Orange

Start switch

TRM-4

White/Green

Brew solenoid

TRM-5

White/Yellow

Start switch

Page 20

41722 070209

 

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

 

SCHEMATIC WIRING DIAGRAM TB3Q

 

 

 

(OPTIONAL)

 

 

 

 

 

READY INDICATOR

GREEN

 

 

 

BLU/BLK

BLK

 

 

 

 

N

L1

LIMIT

 

 

 

 

 

SW. & THERMOSTAT

 

 

 

THERMOSTAT

 

 

 

 

 

BLK

TANK HEATER

WHI

 

BLK

 

 

 

BLU/BLK

 

 

 

 

 

WHI

 

 

 

 

WHI

 

SW1

 

 

"KEEP WARM HEATER"

WHI

 

 

 

 

 

 

 

BLK

 

WHI/VIO

SOL

 

WHI

 

 

 

 

 

 

 

 

1

WHI/VIO

 

 

SW2

 

 

 

 

 

 

 

WHI

 

 

 

 

BREW

2

 

 

 

 

WHI/ORA

 

 

 

 

TIMER

3

WHI/GRN

 

 

 

 

 

4

WHI/YEL

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

120 VOLTS AC

 

2 WIRE

 

SINGLE PHASE

37234.0001A 08/04 © 2004 BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

TB3QA

L1

 

 

 

GRN/YEL

LIMIT

SW. &

 

L2

 

THERMAL

THERMAL

 

THERMOSTAT

 

THERMOSTAT

FUSE

FUSE

 

 

BLK

BLU/BLK

 

BLK

RED

WHI

 

 

TANK HEATER

WHI

SW1

 

 

 

"KEEP WARM" HEATER

RED

 

 

 

 

 

 

 

 

 

WHI/VIO

 

 

 

 

 

 

RED

 

BLK

WHI/VIO

SOL

WHI/GRN

BREW

WHI/ORN

 

 

 

 

TIMER

WHI/GRN

 

 

 

 

 

SW2

 

 

 

 

 

WHI/YEL

230 VOLTS AC

2 WIRE

SINGLE PHASE 37234.0003A 11/04 © 2004 BUNN-O-MATIC CORPORATION

Page 22

41722 070209

 

SCHEMATIC WIRING DIAGRAM TB3, TB3B, TB3-LP

L1

 

 

 

 

Earth Ground

 

N

 

 

 

 

 

 

 

 

 

 

 

GRN

 

 

 

 

 

LIMIT

 

 

 

 

 

 

SWITCH &

 

 

 

 

 

 

 

 

THERMOSTAT

 

THERMOSTAT

 

Chassis Ground

 

BLU/BLK

BLK

WHI

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TANK HEATER

WHI

 

 

 

 

 

 

 

 

WHI

ON/OFF SWITCH

"KEEP WARM" HEATER

 

WHI

 

 

 

 

 

 

 

 

 

BLK

 

BREW/DILUTION

 

 

 

 

 

 

 

 

 

 

TIMER

 

 

 

 

 

 

6

5

4

3

2

1

 

WHI

WHI/VIO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DILUTION

 

 

 

 

 

 

OPTIONAL

 

WHI/VIO

SOL

WHI/BLU

 

 

 

 

 

READY

 

 

 

 

 

 

 

 

INDICATOR

 

 

BREW

 

 

 

 

 

BLU/BLK

BLK

 

WHI/VIO

WHI/GRN

 

 

 

 

 

START

 

SOL

 

 

 

 

 

 

 

 

 

 

 

WHI/ORN

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/YEL

 

 

100 VOLTS AC

 

120 VOLTS AC

 

2 WIRE + GND

37234.0007A 02/08 © 2008 BUNN-O-MATIC CORPORATION

SINGLE PHASE

 

Page 23

41722 070209

 

SCHEMATIC WIRING DIAGRAM

TB3B W/HALF-BATCH

L1

 

 

 

 

 

 

Earth Ground

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GRN

 

 

 

 

 

LIMIT

 

 

 

 

 

 

 

 

SWITCH &

 

 

 

 

 

 

 

 

 

 

THERMOSTAT

 

THERMOSTAT

 

 

Chassis Ground

 

 

 

BLK

WHI

BLK

 

BLU/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TANK HEATER

WHI

 

 

 

 

 

 

 

 

 

 

WHI

 

 

HALF/OFF/FULL SWITCH

 

 

 

"KEEP WARM" HEATER

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW1A

 

SW1B

 

 

SW1C

 

SW1D

 

 

WHI/VIO

 

½ BATCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J1

BREW/DILUTION

 

 

 

 

PNK

1

 

 

 

 

 

 

 

 

 

GRY

3

 

 

TIMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

5

4

3

2

1

 

WHI

WHI/VIO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DILUTION

 

 

 

 

 

 

 

OPTIONAL

 

WHI/VIO

SOL

WHI/BLU

 

 

 

 

 

 

READY

 

 

 

 

 

 

 

 

 

 

INDICATOR

 

 

 

BREW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/VIO

WHI/GRN

 

BLU/BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SOL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

START

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WHI/ORN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 VOLTS AC

 

 

 

 

WHI/YEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120 VOLTS AC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 WIRE + GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SINGLE PHASE

 

 

 

37234.0008B 10/08 © 2008 BUNN-O-MATIC CORPORATION

 

 

 

 

 

 

 

 

 

SCHEMATIC WIRING DIAGRAM TB3Q

 

 

 

 

POWER CORD

GRN

 

L1

LIMIT

Earth Ground

SWITCH &

Chassis Ground

N

 

 

 

 

 

THERMOSTAT

THERMOSTAT

BLU

WHI

 

BLK

 

BLU/BLK

 

BLK

 

WHI

 

 

 

TANK HEATER

WHI

 

 

 

 

 

 

BLK

SW1

"KEEP WARM HEATER"

BLU/BLK

 

WHI

 

 

 

BLK

 

 

 

WHI/VIO

WHI

 

 

 

 

 

 

 

 

SOL

 

OPTIONAL

 

 

 

 

 

 

READY

 

 

 

1

WHI/VIO

 

INDICATOR

 

 

 

WHI

 

 

 

 

BREW

2

 

 

 

 

WHI/ORA

 

 

 

 

TIMER

3

WHI/GRN

 

 

 

 

 

4

WHI/YEL

START SWITCH

 

 

 

5

 

 

 

 

120 VOLTS AC

2 WIRE

SINGLE PHASE

37234.0009B 06/08 © 2008 BUNN-O-MATIC CORPORATION

Page 24

41722 070209

 

SCHEMATIC WIRING DIAGRAM TB3Q W/SWEETENER & EMPTY BAG DETECT

L1

 

 

 

 

 

 

 

GREEN

 

N

LIMIT

 

 

THERMOSTAT

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

TANK HEATER

 

 

BLK

BLU/BLK

 

 

 

BLK

 

WHI

 

 

 

 

 

 

 

WHI

 

 

 

 

 

"KEEP WARM" HEATER

 

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW PRESSURE

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

WHI/VIO

 

COM.

N.O.

BLU

 

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RELAY

 

UNSWEET/OFF/SWEET

WHI

 

 

WHI/VIO

BLK

 

2

WHI

 

 

 

 

 

 

 

 

 

 

 

SOLD OUT INDICATOR

 

7

 

 

 

WHI/VIO

 

 

 

 

5

 

BLK

 

 

 

 

 

 

 

 

 

 

WHI/VIO

 

 

 

 

START

 

 

 

 

1

 

 

 

 

 

 

 

 

WHI/BLK

 

 

 

 

 

 

 

 

BREW

2

WHI/ORA

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

TIMER

WHI/GRN

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

WHI/YEL

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BRN/WHI

SOL

WHI/VIO

 

SOL

WHI/GRN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWTNR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SOL

 

 

 

 

WHI/BLU

120 VOLTS AC

 

2 WIRE

37234.0010A 04/08 © 2008 BUNN-O-MATIC CORPORATION

SINGLE PHASE

 

SCHEMATIC WIRING DIAGRAM TB3A

 

 

 

OPTIONAL

 

 

 

 

 

 

Earth Ground

 

 

 

READY

 

 

 

 

 

 

 

 

 

 

 

INDICATOR

 

 

 

 

 

 

GRN

 

 

 

 

BLU

 

BLK

 

 

 

 

 

 

L1

 

 

SWITCH &

 

 

 

 

 

 

 

N

 

LIMIT

 

 

 

 

 

THERMAL

Chassis Ground

THERMAL

 

 

THERMOSTAT

 

 

 

 

 

 

 

 

FUSE

FUSE

THERMOSTAT

 

 

 

 

 

 

 

 

BLK

 

BLU/BLK

 

 

 

 

BLK

 

 

RED

 

 

 

 

 

 

 

 

 

 

TANK HEATER

 

WHI

 

 

 

 

 

 

 

 

 

 

WHI

 

ON/OFF SWITCH

"KEEP WARM" HEATER

 

 

RED

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BREW/DILUTION

 

 

 

 

 

 

 

 

TIMER

 

 

 

 

 

 

 

 

6

5

4

3

2

1

 

 

 

WHI/VIO

DILUTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED

 

 

RED

WHI/VIO

 

SOL

WHI/BLU

 

 

 

 

 

 

 

START

 

 

2

 

 

 

 

 

 

 

 

WHI/VIO

SOL

WHI/GRN

 

 

 

 

WHI/ORN

 

SWITCH

 

 

 

 

 

 

 

1

 

 

 

 

 

 

WHI/YEL

 

 

 

 

BREW

 

 

 

 

 

 

 

 

 

 

230 VOLTS AC

2 WIRE

SINGLE PHASE

37234.0011A 10/08 © 2008 BUNN-O-MATIC CORPORATION

Page 25

41722 070209

 

SCHEMATIC WIRING DIAGRAM TB6

 

 

 

OPTIONAL

 

 

GRN

 

 

 

 

 

 

 

 

 

 

 

READY INDICATOR

Chassis Ground

Earth Ground

 

 

 

BLU

BLK

 

 

 

 

 

 

L1

LIMIT

SW. &

 

 

 

N

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

BLK

 

 

BLK

 

BLU/BLK

 

 

WHI

WHI

 

 

 

 

 

TANK HEATER

WHI

 

 

 

 

 

 

 

 

 

 

"KEEP WARM" HEATER

 

BLK

 

LEFT/OFF/RIGHT SWITCH

 

 

START SWITCH

 

SW1A

 

SW1B

SW1C

SW1D

SW2A

 

 

 

 

BRN/BLK

 

YEL

 

 

 

1

WHI/VIO

 

 

 

 

 

 

 

 

 

 

 

2

WHI

 

 

 

 

WHI

 

3

WHI/ORN

 

 

 

 

 

TIMER

4

WHI/GRN

 

SOL

 

 

 

 

5

WHI/YEL

 

BREW

 

 

 

6

WHI/BLU

 

 

 

 

 

 

YEL

 

 

 

 

 

SOL

SOL

 

 

 

 

 

 

 

 

120 VOLTS A C

LEFT

RIGHT

 

 

 

DILUTION

 

 

 

2 WIRE

 

 

 

 

 

SINGLE PHASE

41974.0000A 03/09 © 2009 BUNN-O-MATIC CORPORATION

Page 26

41722 070209

 

SCHEMATIC WIRING DIAGRAM TB6Q

 

 

 

OPTIONAL

 

 

GRN

 

 

 

 

 

 

 

 

 

 

 

READY INDICATOR

Chassis Ground

Earth Ground

 

 

 

BLU

BLK

 

 

 

 

 

 

L1

LIMIT

SW. &

 

 

 

N

 

 

 

 

 

 

THERMOSTAT

 

 

 

 

THERMOSTAT

 

 

 

 

 

 

BLK

 

 

BLK

 

BLU/BLK

 

 

WHI

WHI

 

 

 

 

 

TANK HEATER

WHI

 

 

 

 

 

 

 

 

 

 

"KEEP WARM" HEATER

 

BLK

 

LEFT/OFF/RIGHT SWITCH

 

 

START SWITCH

 

SW1A

 

SW1B

SW1C

SW1D

SW2A

 

 

 

 

BRN/BLK

 

YEL

 

 

 

1

WHI/VIO

 

 

 

 

 

 

 

 

 

 

 

2

WHI

 

 

 

 

WHI

 

3

WHI/ORN

 

 

 

 

 

TIMER

4

WHI/GRN

 

SOL

 

 

 

 

5

WHI/YEL

 

BREW

 

 

 

 

 

 

 

 

 

 

 

SOL

SOL

YEL

 

 

 

 

 

 

 

 

120 VOLTS A C

LEFT

RIGHT

 

 

 

DILUTION

 

 

 

2 WIRE

 

 

 

 

 

SINGLE PHASE

41975.0000A 03/09 © 2009 BUNN-O-MATIC CORPORATION

Page 27

41722 070209