Bunn T6, T3A, T6A, T3 User Manual

BUNN

®

T3,T3A

T6,T6A

OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

TELEPHONE: [phone] FAX: [phone]

10145.0000G 7/00 © 1984 Bunn-O-Matic Corporation

CONTENTS

Introduction ............................................................................. 2

Warranty .................................................................................. 2

User Notices............................................................................. 3

Electrical Requirements ........................................................... 4

Plumbing Requirements........................................................... 4

Initial Set-Up ............................................................................ 5

Adjusting Brew Volumes .......................................................... 6

Operating Controls ................................................................... 6

Cleaning ................................................................................... 7

Tea Brewing.............................................................................. 7

Troubleshooting ....................................................................... 8

Service ................................................................................... 14

Wiring Diagrams .................................................................... 28

INTRODUCTION

The T3 will brew a three-gallon batch of fresh tea into a reservoir, the T6 will brew a three-gallon batch into
either the right or left reservoir. The tea will be dispensed at approximately room temperature to conserve ice.
The brewer 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 commercially free from defects
in material and workmanship existing at the time of manufacture and appearing within one year from the date of
installation. In addition:

1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material and

workmanship for two years from the date of installation.

2.) Bunn warrants the compressor on refrigeration equipment to be commercially free from defects in material

and workmanship for two years from the date of installation.

3.) Bunn warrants that the grinding burrs on coffee grinding equipment will grind coffee to meet original factory

screen sieve analysis for three years from date of installation or for 30,000 pounds of coffee, whichever comes first.

This warranty does not apply to any equipment, component or part that was not manufactured by Bunn or that,
in Bunn’s judgement, has been affected by misuse, neglect, alteration, improper installation or operation, improper
maintenance or repair, damage or casualty.

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.

The Buyer shall give 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. If requested by Bunn, the Buyer
shall ship the defective equipment prepaid to an authorized Bunn service location. If Bunn determines, in its sole
discretion, that the equipment does not conform to the warranty, Bunn shall repair the equipment with no charge
for parts during the warranty period and no charge for labor by a Bunn Authorized Service Representative during
the warranty period. If Bunn determines that repair is not feasible, Bunn shall, at its sole option, 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, AS
SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, 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 2

10145 072600

USER NOTICES

Carefully read and follow all notices on the equipment and in this manual. They were written for your protec-

tion. All notices on the equipment should be kept in good condition. Replace any unreadable or damaged labels.

#00831.0000

#00656.0000

#03408.0000

#03409.0000

Page 3

10145 021599

ELECTRICAL REQUIREMENTS

CAUTION - The brewer must be disconnected from the power source until specified in

120V model brewers require 2-wire, grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz.
"A" model brewers require 2-wire, grounded service rated 240 volts ac, 10 amp, single phase, 50 Hz.
"B" model brewers require 2-wire, grounded service rated 100 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. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

3. Remove top cover from the brewer.

4. Rotate the control thermostat knob fully counterclockwise to the "OFF" position and replace the top cover.

5. Connect the brewer to the power source.

6. If plumbing is to be hooked up later be sure the brewer is disconnected from the power source. If plumbing

has been hooked up, the brewer is ready for

Initial Set-Up.

Initial Set-Up.

PLUMBING REQUIREMENTS

These brewers must be connected to a cold water system with operating pressure between 20 (138) and 90
psi (620 kPa) from a 1⁄2" or larger supply line. A shut-off valve should be installed in the line before the brewer.
Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi(345 kPa). The
water inlet fitting is 1⁄4" flare.

NOTE - Bunn-O-Matic recommends 1⁄4" copper tubing for installations of less than 25 feet and 3⁄8" for more than
25 feet from the 1⁄2" water supply line. A tight coil of copper tubing in the water line will facilitate moving the
brewer to clean the countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the
brewer. The size and shape of the hole made in the supply line by this type of device may restrict water flow.

This equipment must be installed to comply with the Basic Plumbing Code of the

Building Officials and Code Administrators International, Inc. (BOCA)

and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).

1. Remove the shipping cap from the bulkhead fitting on the bottom of the brewer.

2. Attach the flare fitting from the short piece of tubing on the strainer/flow control (supplied) to the water inlet

fitting at the rear of the brewer.

3. Flush the water line and securely attach it to the flare fitting on the strainer/flow control.

4. Turn on the water supply.

Page 4

10145 072600

INITIAL SET-UP (FILL & HEAT)

CAUTION - The brewer must be disconnected from the power source throughout the

when specified in the instructions.

1. Complete the electrical and plumbing instructions prior to starting this procedure.

2. Remove the top panel and check that the thermostat dial is rotated fully counterclockwise to the “OFF”
position.

3. Set the delay dial at eight minutes. Replace top panel. Plug in brewer.

4. Remove the filter screen and metal ferrule from the funnel to speed this procedure. Insert the funnel into the
funnel rail and push it until it stops. Rotate the funnel handle to the left or right (T6) to align the funnel
discharge over the hole in the reservoir cover. (Model T3 funnel does not rotate.)

5. Turn the ON/OFF switch (T3) to “ON” or SELECTOR switch (T6) to the “LEFT” or “RIGHT” and momentarily
depress the start switch. Water will immediately start flowing into the water tank and will automatically shut
off at the end of three minutes. Depress the start switch again. During the second period the tank will fill to
its capacity and the excess will flow from the sprayhead and out of the funnel.

6. Wait until the flow stops then turn the ON/OFF or SELECTOR switch to the “OFF” position.

7. Rotate the thermostat fully clockwise, (“ON”) and wait for the water tank to stabilize at its proper tempera­ture. During this period some water will come out of the funnel due to expansion, this will not occur thereaf­ter.

8. Turn the ON/OFF switch (T3) to “ON” or SELECTOR switch (T6) to the “LEFT” or “RIGHT” and depress the
start switch to cycle the control thermostat.

9. Wait until the flow stops then turn the ON/OFF or SELECTOR switch to the “OFF” position.

10. The brewer is now ready for initial timer adjustment.

Initial Set-Up

, except

INITIAL TIMER ADJUSTMENT

1. Complete the initial fill and heat instructions prior to starting this procedure.

2. With the filter screen and metal ferrule removed from the funnel, water will flow quickly from the funnel and
speed this procedure. Insert the funnel into the funnel rails and push it until it stops. Rotate the funnel handle
to the left or right (T6) to align the funnel discharge over the hole in the reservoir cover. (Model T3 funnel
does not rotate.)

3. Check the delay dial is at eight minutes and the dilution dial is at three minutes and forty-five seconds.

4. Empty the tea reservoir of any water that may have accumulated.

5. Turn the ON/OFF switch to “ON” (T3), or the SELECTOR switch to “LEFT” or “RIGHT”, (T6), and momentarily
depress the start switch. After a few seconds water should flow from the funnel into the reservoir. Allow this
to continue until it stops and immediately turn the ON/OFF or SELECTOR switch to “OFF”.

6. Measure the water collected in the reservoir. It should equal seventy-six ounces. If it is less or more than this
amount, adjust the brew timer accordingly (See
get the proper amount.

7. Rotate the delay dial fully counterclockwise to speed this next procedure. Drain the reservoir.

8. Momentarily depress the start switch and allow both the concentrate and dilution cycles to occur. When all
water stops flowing, the level in the reservoir should be in the middle of the two lower stud heads that hold
the dilution water nozzle in place. If it is not correct, rotate the dilution dial up or down accordingly and repeat
this step until the proper level is achieved.

9. Return the delay dial to eight minutes.

Adjusting Brew Volumes

) and repeat Steps 5 and 6 until you

Page 5

10145 072600

INITIAL TIMER ADJUSTMENT (cont.)

®

10. Install the ferrule and screen in the funnel. Load the funnel with a BUNN

paper filter and approximately four
ounces of loose tea leaves. Depress the start button to brew tea and observe the funnel drip out and the
dilution streams near the end of the cycle. The dilution stream should stop approximately thirty seconds after
the drip out has stopped.

11. If this does not happen, load the funnel with a fresh filter and tea, rotate the delay dial up or down accordingly
and repeat Step 10 until proper timing is achieved.

12. Replace the top panel. The brewer is now ready for normal operation.

ADJUSTING BREW VOLUMES

CAUTION - Disconnect the power source from the brewer prior to the removal of any panel for the replacement

or adjustment of any component.
NOTE: Prior to setting or modifying batch sizes, check that the brewer is connected to water supply, the tank is
properly filled, and a funnel and server are in place.

1. Modifying batch sizes. To modify a batch volume, first check that the SET/LOCK switch is in the “SET”
position on the circuit board.
To increase a batch size. Press and hold the START or BREW switch until three clicks are heard. Release the
switch (Failure to release the switch within two seconds after the third click causes the volume setting to be
aborted and previous volume setting will remain in memory) and press it again one or more times. Each time
the switch is pressed, two seconds are added to the brew time period. Allow the brew cycle to finish in order
to verify that the desired volume has been achieved.
To decrease a batch size. Press and release the START or BREW switch once for every two-second interval
to be removed from the total brew time period; then immediately press and hold down the START or BREW
switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds after
the third click causes the volume setting to be aborted and previous volume setting will remain in memory).
Allow the brew cycle to finish in order to verify that the desired volume has been achieved.

2. Setting batch sizes. To set a batch volume, first check that the SET/LOCK switch is in the “SET” position on
the circuit board. Press and hold the START or BREW switch until three distinct clicks are heard, and then
release the switch. (Failure to release the switch within two seconds after the third click causes the volume
setting to be aborted and previous volume setting will remain in memory). View the level of the liquid being
dispensed. When the desired level is reached, turn the ON/OFF switch to “OFF” (lower). The brewer remem­bers this volume and will continue to brew batches of this size until the volume setting procedure is repeated.

NOTE: When brewing coffee, batch volumes will decrease due to absorption by the coffee grounds.

3. Setting programming disable feature. If it becomes necessary to prevent anyone from changing brew times
once programmed, you can set the SET/LOCK switch to the “LOCK” position. This will prevent any program­ming to be done until switch is once again placed in the “SET” position.

OPERATING CONTROLS

A. ON/OFF SWITCH (T3 ONLY)

ON - Placing the switch in the"ON" (left) position allows the start switch to activate a timed brew cycle for three

gallons of tea.

OFF - Placing the switch in the "OFF" (right) position stops the brew cycle. Stopping a brew cycle after it has been
started will not stop the flow of water into the funnel until the tank syphons down to its proper level. The switch

should always be placed in this position after a brew cycle and whenever the brewer is unattended.

Page 6

10145 072600

OPERATING CONTROLS (cont.)

B. SELECTOR SWITCH (T6 ONLY)

Placing the selector switch in the "ON" (left or right) position allows the start switch to activate a timed brew cycle
for three gallons of tea. It also selects into which reservoir dilution water will be introduced. This switch should

always be in the "OFF" (center) position after a brew cycle or when the brewer is unattended.

C. START SWITCH

Starts a brew cycle when the ON/OFF or SELECTOR switch is in the "ON" position.

CLEANING

CAUTION - CLEAN AND SANITIZE YOUR ICED TEA BREWER DAILY

1. Remove and thoroughly clean the entire brew funnel. The funnel tip and screen must be free from any tea

particles or residue. Reassemble the funnel.

2. Place the ON/OFF or SELECTOR switch in the "OFF” position. Remove and thoroughly rinse the sprayhead.

The holes must be open and clear of any mineral deposits. Wipe the sprayhead panel clean with a damp
cloth.

3. Insert the deliming spring into the sprayhead fitting until no more than two inches is visible and move it in

and out 5 or 6 times. Insert the spring into the airvent hole in the sprayhead panel and move it in and out 5
or 6 times. Reattach the sprayhead.

4. Twist the faucet shank nut in a clockwise direction and remove the faucet from the brewer.

5. Thoroughly clean the entire inside surface of the reservoir, the surfaces behind the reservoir rim, and the

faucet with a brush using a mild detergent and water solution. Rinse the reservoir and shank in warm water,

6. Disassemble the faucet. The faucet cleaning procedure requires a three compartment sink. Thoroughly wash

all faucet parts in a mild detergent and water solution in the first sink. Rinse the parts in hot water in the
second sink. Sanitize the parts for one minute in 75
sink. Reassemble the faucet and attach it to the brewer.

7. Sanitize all exposed surfaces of the reservoir with a 75o warm chlorine solution (at least 100 ppm). Empty the

reservoir, insert the brew funnel and thoroughly rinse everything by running two complete brew cycles,
empty the reservoir after each brew cycle.

8. Wash the entire outside surface of the brewer with a clean damp cloth.

o

warm chlorine solution (at least 50 ppm) in the third

CAUTION - DO NOT KEEP BREWED ICED TEA OVERNIGHT. THE SERVER MUST BE CLEANED DAILY.

TEA BREWING

1. Begin each brew cycle with a clean empty brew funnel and reservoir(s).

2. Insert a BUNN® filter into the funnel.

3. Pour the packet of loose fresh tea leaves into the filter. Approximately four ounces is recommended.

4. Level the bed of tea leaves by gently shaking.

5. Slide the funnel into the funnel rails until it stops. On T6 brewers, fully rotate the funnel handle to the left or

right to align the funnel discharge over the selected reservoir.

6. Place the ON/OFF or SELECTOR switch in the “ON” position.

7. Momentarily press the start switch.

CAUTION - The funnel contains hot liquids. Remove funnel slowly.

8. Carefully remove the brew funnel and discard the used filter when tea no longer drips from the funnel tip.

9. Place the ON/OFF or SELECTOR switch in the "OFF" position to prevent a false start.

10. Fresh tea is available at the faucet.

Page 7

10145 072600

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 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

Brew cycle will not start

Probable Cause

1. No water

2. No power or incorrect voltage to
the brewer

3.External Strainer/ Flow Control
(.750 GPM)

4. (A) ON/OFF Switch (T3)

(B) Selector Switch (T6)

Remedy

Water lines and valves to the brewer
must be open.

Check circuit breakers or fuses.

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

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

Refer to

Service

- ON/OFF Switch

for testing. See page 24

Refer to

Service

- Selector Switch

for testing. See page 24

Page 8

10145 072600

TROUBLESHOOTING (cont.)

PROBLEM

Brew cycle will not start (cont.)

Water is not hot

PROBABLE CAUSE

5. Start Switch

6. Brew Timer

7. Brew Solenoid Valve

8. Internal Flow control (.195 GPM)

1. Limit Thermostat
CAUTION - Do not eliminate or by­pass limit thermostat or thermal
cut-off. Use only BOM replacement
part #29329.1000

REMEDY

Refer to

Service

- Start Switch for

testing procedures. See page 26

Refer to

Service

- Brew Timer for
testing procedures. See page 17 or
18

Refer to

Service

- Brew Solenoid
Valve for testing procedures. See
page 15

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

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

Refer to

Service

- Limit Thermostat

for testing procedures. See page 23

Dilution cycle will not start

2. Control Thermostat

3. Tank Heater

1. (A) ON/OFF Switch (T3)

(B) Selector Switch (T6)

2. Start Switch

3. Dilution Timer

Refer to

Service

- Control Thermo­stat for testing procedures. See
page 20

Refer to

Service

- Tank Heater for

testing procedures. See page 27

Refer to

Service

- ON/OFF Switch
for testing procedures. See page 24

Refer to

Service

- Selector Switch

for testing procedures. See page 24

Refer to

Service

- Start Switch for

testing procedures. See page 26

Refer to

Service

- Dilution Timer for

testing procedures. See page 22

Page 9

10145 072600

TROUBLESHOOTING (cont.)
PROBLEM

Dilution cycle will not start (cont.)

Inconsistent beverage level in dis­penser

PROBABLE CAUSE

4. Dilution Solenoid Valve

1. Internal Flow Control (.195 GPM)

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.

REMEDY

Refer to

Service

- Dilution Solenoid
Valve for testing procedures. See
page 21

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

(B) Remove the 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.

Consistently high or low beverage
level in the dispenser

4. Water Pressure

1. Brew Timer/Dilution Timer

2. External Strainer/Flow Control
(.750GPM)

The water pressure to the brewer
must be at least 20 psi (138 kPa).

With the ON/OFF switch "ON" adjust
the brew timer to achieve the rec­ommended 76 oz of concentrate
then the dilution timer to achieve a
total of 396 oz for each three-gal­lon brew cycle.

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

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

Page 10

10145 072600

TROUBLESHOOTING (cont.)

PROBLEM

Spitting or excessive steaming

Drip-out time too long

Dripping from sprayhead

PROBABLE CAUSE

1. 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.

2. Control Thermostat

1. Funnel Tip

1. Syphon System

REMEDY

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

Refer to

Service

- Control Thermo­stat for testing procedures. See
page 20

The brew funnel should be cleaned
thoroughly before each brew cycle
to lessen the chance of tea leaf par­ticles clogging the drip-out tip.

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

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

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

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. Brew Solenoid Valve

1. Brew Timer

1. Brew Solenoid Valve

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

Refer to

Service

- Brew Solenoid
Valve for testing procedures. See
page 15

Refer to

Service

- Brew Timer for
testing procedures. See page 17 or
18

Refer to Service - Brew Solenoid
Valve for testing procedures. See
page 15

Page 11

10145 072600

TROUBLESHOOTING (cont.)

PROBLEM

Beverage overflows dispenser

1.Dispenser

2. Brew Timer

3. Brew Solenoid Valve

4. Dilution Timer

5. Dilution Solenoid Valve

REMEDYPROBABLE CAUSE

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

Refer to

Service -

Brew Timer for
testing procedures. See page 17 or
18

Remove the Brew Solenoid Valve
and clean any obstruction. Rebuild
or replace the valve if necessary.
See page 15

Refer to

Service

- Dilution Timer for

testing procedures. See page 22

Refer to

Service

- Dilution Solenoid
Valve for testing procedures. See
page 21

Weak beverage

1. Filter Type

2. Tea

3. Sprayhead

4. Funnel Loading

5. Water Temperature

BUNN® paper filters must be used
for proper extraction.

A sufficient quantity of fresh, loose
tea leaves should 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 tea leaves leveled by gentle shak­ing.

Place an empty funnel into the fun­nel rails on the brewer. 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.

Page 12

10145 072600

TROUBLESHOOTING (cont.)

PROBLEM PROBABLE CAUSE REMEDY

Dry tea leaves remain in the funnel

Brewer is making unusal noises

1. Funnel Loading

1. Solenoid(s)

2. Plumbing Lines

3. Water Supply

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

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

Plumbing lines should not be 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).

4. Tank Heater

Remove and clean lime off the
tank heater. See page 27

Page 13

10145 072600

SERVICE

This section provides procedures for testing and
replacing various major components used in this
brewer should service become necessary. Refer to

Troubleshooting

cause of any problem.

WARNING - Inspection, testing, and repair of electri­cal 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 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.

for assistance in determining the

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

The top cover is attached with four #6-32 screws.
Removal of the top cover will allow access to ON/OFF
or SELECTOR switch, start switch, brew timer, dilu­tion timer, control thermostat, limit thermostat and
tank heater,

The rear inspection panel is attached with six #8­32 screws. Removal of the rear panel will allow access
to the brew solenoid valve, dilution solenoid valve(s)
and .195 GPM flow control and check valve.

Contents

Brew Solenoid Valve ........................................... 15

Brew Timer (Early Models) ................................. 17

Digital Brew Timer (Late Models) ....................... 18

Control Thermostat............................................. 20

Dilution Solenoid Valve ....................................... 21

Dilution Timer ..................................................... 22

Limit Thermostat ................................................ 23

ON/OFF Switch & Selector Switch ...................... 24

Start Switch ........................................................26

Tank Heater .........................................................27

Wiring Diagrams.................................... 28 thru 30

T6

T3

FIG. 1 COMPONENT ACCESS

P1832.35

Page 14

10145 072600

SERVICE (cont.)

BREW SOLENOID VALVE

P1833.50

FIG. 2 BREW SOLENOID VALVE

Location:

Viewing the brewer from the rear the brew sole­noid valve is mounted on the left side of the mounting
bracket.

Test Procedures:

1. Disconnect the brewer from the power source.

2. Disconnect the white/violet and white/green wires

from the solenoid valve. With the ON/OFF or SE-

LECTOR switch in the "ON" (T3 left, T6 Left or

right) position and press the start switch.

3. With a voltmeter, check the voltage across the

white/violet and white/green wires. Connect the

brewer to the power source. The indication must

be:

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

b) 240 volts ac for two wire 240 volt models.

c) 100 volts ac for two wire 100 volt models.

4. Disconnect the brewer from the power source,

If continuity is present as described, reconnect the
white/violet from the switch and white/green wire from
the brew timer.
If continuity is not present as described, replace the
solenoid valve.

6. Check the solenoid valve for coil action. Connect
the brewer to the power source. With ON/OFF or
SELECTOR switch in the "ON" (T3 left, T6 left or
right) position press 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 block­age 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, replace the
solenoid valve.

Removal and Replacement:

1. Remove all wires from solenoid valves.

2. Turn off the water supply to the brewer.

3. Disconnect the water lines to and from the sole­noid valves.

4. Remove the two #8-32 keps nuts holding the
mounting bracket to the brewer base.

5. Lift out the bracket.

6. Remove the two #10-32 slotted-head screws hold­ing the solenoid valve to the mounting bracket.

7. Securely install the new solenoid valve to the
mounting bracket.

8. Attach the mounting bracket to the brewer base.

9. Securely fasten the water lines to and from the
solenoid valves.

10. Refer to the Fig. 3 when reconnecting the wires.

If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to

Diagrams

and check brewer wiring harness.

Wiring

5. Check for continuity across the solenoid valve coil
terminals.

Page 15

10145 072600

SERVICE (cont.)
BREW SOLENOID VALVE (cont.)

WHI/BLU to Dilution Timer TL4

WHI/GRN to BREW
Timer TL4
WHI/VIO to
Dilution
Solenoid

DILUTION

SOLENOID

BREW

SOLENOID

T3

WHI/VIO to Brew Solenoid
WHI/VIO to Brew Timer TL1

BRN/BLK to Selector Switch

WHI/BLU to Dilution Timer TL4

YEL to Selector Switch

WHI/GRN to Brew
Timer TL4
WHI/VIO to Brew
Timer TL1

DILUTION

SOLENOID

LT RESERVOIR

DILUTION

SOLENOID

RT RESERVOIR

BREW

SOLENOID

T6

FIG.3 SOLENOID VALVE TERMINALS

P1834

Page 16

10145 072600

SERVICE (cont.)

Wiring Diagrams

and check the wiring harness.

BREW TIMER

OLD STYLE

FIG. 4 BREW TIMER

P1833

Location:

The brew timer is located in the hood. It consists

of the left dial plate and circuit board.

Test Procedure:

1. Disconnect the brewer from the power source.

2. Remove the wires from terminals TL3, TL4, & TL5
of the timer and rotate the dial fully counterclock­wise.

2. With a voltmeter, check the voltage across termi­nals TL1 and TL2 when the ON/OFF or SELECTOR
switch is in the “ON” (T3 left, T6 left or right) po­sition. Connect the brewer to the power source.
The indication must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.

3. Disconnect the brewer from the power source.

5. Check the voltage across terminals TL1 and TL4
with a voltmeter when the ON/OFF or SELECTOR
switch is in the “ON” (T3 left, T6 left or right) po­sition and the start switch is momentarily placed
in the lower position. Connect the brewer to the
power source. The indication must be:
a) 120 volts ac for two wire 120 volt models for
approximately twenty seconds and then return
to its previous indication.
b) 240 volts ac for two wire 240 volt models for
approximately twenty seconds and then return to
is previous indication.
c) 100 volts ac for two wire 100 volt models for
approximately twenty seconds and then return to
its previous indication.

6. Disconnect the brewer from the power source.

If voltage is present as described, the timer is operat­ing properly. Adjust the timer dial as required.
If voltage is not present as described, replace the timer.

Removal and Replacement:

1. Remove all wires from the timer.

2. Remove the circuit board and dial plate from the
brackets.

3. Install the new timer circuit board as described in
the

Late Model Timer

Section.

4. Refer to Fig. 7 when reconnecting the wires.

5. Install the Timer Setting Decal, provided with the
timer replacement kit, to the rear of the schematic,
on the top cover.

5. Adjust the timer as required. Refer to

Timer

Section.

WHI to Power Cord (100V & 120V)
or RED to Power Connector (240V)
WHI to Dilution Timer (100V & 120V)
or RED to Dilution Timer (240V)

Late Model

If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the

ing Diagrams

and check the wiring harness.

Wir-

4. Check for continuity across the white/orange and
white/yellow wires when the start switch is held
in the lower position.

If continuity is present as described, refer to Fig. 5
and reconnect the wires to terminals TL3, TL4, & TL5
of the timer board and proceed to #5.
If continuity is not present as described, refer to the

Page 17

WHI/VIO to Dilution Timer
WHI/VIO to ON/OFF Switch

WHI/ORN to Start Switch

WHI/GRN to Brew Solenoid

WHI/YEL to Start Switch

PNK to Selector Switch
(Half Batch Option Only)

GRY to Selector Switch
(Half Batch Option Only)

P1279

FIG. 5 BREW TIMER TERMINALS

10145 072600

SERVICE (cont.)
DIGITAL BREW TIMER (Late Models)

P2207.50

If voltage is not present as described, refer to the

Wiring Diagrams

and check the brewer wiring har-

ness.

6. With a voltmeter, check the voltage across termi­nals TL1 and TL4 when the "ON/OFF" switch is in
the "ON" position. Connect the brewer to the power
source. The indication must be 0 volts.

If voltage is as described, proceed to #7.
If voltage is not as described, disconnect the brewer
from the power source and replace the timer.

7. With a voltmeter, check the voltage across termi­nals TL1 and TL4 when the "ON/OFF" switch is in
the "ON" position. Connect the brewer to the power
source and press the "START" switch. The indica­tion must be as follows:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac on two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.

FIG. 6 DIGITAL BREW TIMER

Location:

The timer is located inside the hood, attached to

the left side.

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 front access panel.

2. Remove the two #8-32 screws securing circuit
board to the mounting bracket.

3. Remove circuit board and spacers (as required).

4. With a voltmeter, check the voltage across termi­nals TL1 and TL2 when the "ON/OFF" switch is in
the "ON" position. Connect the brewer to the power
source. The indication must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.

5. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.

If voltage is present as described, the brew timer is
operating properly. Reset the timer as required, to
obtain the desired brew volume.
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 #8-32 screws securing circuit
board to the mounting bracket.

2. Remove circuit board and spacers (as required).

3. Remove all wires from the timer.

4. Attach all wires to the replacement timer board
prior to installation to the component mounting
bracket. Refer to FIG. 7 when reconnecting the
wires.

5. Install new circuit board with spacers (as re­quired) to the component mounting bracket.

6. Adjust the timer as described below.

Timer Setting:
NOTE: Prior to setting or modifying volumes, check
that the brewer is connected to water supply, the tank
is properly filled, and a funnel and server are in place.
NOTE: All volume settings must be done with the
sprayhead installed.

Page 18

10145 072600

SERVICE (cont.)
DIGITAL BREW TIMER (Late Models)(cont.)

1. Modifying brew volumes. To modify a brew vol-
ume, first check that the SET/LOCK switch is in the
“SET” position on the circuit board.

To increase a brew volume, place the ON/OFF

switch in the “ON” position, press and hold the START
switch until three clicks are heard. Release the switch
and press it again one or more times. (Failure to re­lease the switch within two seconds after the third
click causes the volume setting to be aborted and pre­vious volume setting will remain in memory.) Each
time the switch is pressed, two seconds are added to
the brew time period. Allow the brew cycle to finish in
order to verify that the desired volume has been
achieved.

To decrease a brew volume, place the ON/OFF

switch in the “ON” position, press and release the
START switch once for every two-second interval to
be removed from the total brew time period; then im­mediately press and hold down the START switch until
three clicks are heard. Release the switch. (Failure to
release the switch within two seconds after the third
click causes the volume setting to be aborted and pre­vious volume setting will remain in memory). Allow
the brew cycle to finish in order to verify that the de­sired volume has been achieved.

NOTE: When brewing coffee, volume will decrease due
to absorption by the coffee grounds.

3. Setting programming disable feature. If it be-
comes necessary to prevent anyone from changing
brew time once programmed, you can set the SET/
LOCK switch to the “LOCK” position. This will pre­vent any further programming until switch is once
again put into the “SET” position.

NOTE - Brewers with half-batch option will have to be
set for both full and half-batch settings.

2. Setting brew volumes. To set a brew volume,
first check that the SET/LOCK switch is in the “SET”
position on the circuit board. Place the ON/OFF switch
in the “ON” position, press and hold the START switch
until three distinct clicks are heard and then release
the switch. (Failure to release the switch within two
seconds after the third click causes the volume set­ting to be aborted and previous volume setting will
remain in memory.)
View the level of the liquid being dispensed. When
the desired level is reached, turn the ON/OFF switch
to “OFF”.
NOTE: Several ounces of water will continue to sy­phon from the tank after turning the switch “OFF”.
The brewer remembers this volume and will continue
to brew batches of this size until the volume setting
procedure is repeated.

Page 19

TL1 - WHI/VIO to Dilution Timer and
WHI/VIO to ON/OFF Switch
TL2 - WHI to Power Cord (100V & 120V) or
RED to Power Connector (240V) and
WHI to Dilution Timer (100V & 120V) or
RED to Dilution Timer (240V)
TL3 - WHI/ORN to Start Switch
TL4 - WHI/GRN to Brew Solenoid
TL5 - WHI/YEL to Start Switch

J2-2 - PNK to Selector Switch (Half Batch Option only)
J2-3 - GRY to Selector Switch (Half Batch Option only)

P2037

FIG. 7 DIGITAL TIMER WIRING

10145 072600

SERVICE (cont.)
CONTROL THERMOSTAT

FIG. 8 CONTROL THERMOSTAT

P2207.40

Location:

The control thermostat is located inside hood on

the right side just behind the dilution timer.

Test Procedures:

1. Disconnect the brewer from the power source.

2. Locate the blue/black wire on the control thermo­stat.

3. With a voltmeter, check the voltage across the blue/
black wire on the control thermostat and the white
wire on the tank heater for 100 volt and 120 volt
two wire models or red wire on the tank heater for
240 volt two wire models. Connect the brewer to
the power source. The indication must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 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 har-

ness.

5. Locate the black wire on the control thermostat.

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

7. With a voltmeter, check the voltage across the
black wire of the control thermostat and the white
wire on the tank heater for 100 volt and 120 volt
two wire models or red wire on the tank heater for

Page 20

240 volt two wire models when the control ther­mostat is turned fully clockwise. Connect the
brewer to the power source. The indication must
be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 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. Remove both wires from the control thermostat
terminals.

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.

3. Remove the #8-32 screw holding the control ther­mostat to its bracket.

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 a vertical position.

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

7. Fasten the new control thermostat to its bracket.

8. Refer to Fig. 9 when reconnecting the wires.

9. Adjust the control thermostat as required.

BLK to Tank
Heater

BLU/BLK to Limit
Thermostat

P1280

FIG. 9 CONTROL THERMOSTAT TERMINALS

10145 072600

SERVICE (cont.)
DILUTION SOLENOID VALVE(S)

P2207.40

FIG. 10 DILUTION SOLENOID VALVE(S)

Location:

Viewing the brewer from the rear the dilution so­lenoid for the T3 is mounted on the center of the sole­noid mounting bracket, the T6 solenoids are mounted
in the center and the right side of the mounting bracket.

Test Procedure:

1. Disconnect the brewer from the power source.

2. T3 - With a voltmeter, check the voltage across

the white/blue and white/violet wires on the dilu-

tion solenoid terminals when the ON/OFF switch

is in the “ON” (left) position and the start switch

is momentarily placed in the lower position. Con-

nect the brewer to the power source. After the

approximate setting on the delay dial, the indica-

tion must be:

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

b) 240 volts ac for two wire 240 volt models.

c) 100 volts ac for two wire 100 volt models, re-

main for the approximate setting on the dilution

dial, and then return to its previous indication.

T6 - With a voltmeter, check the voltage across

the white/blue and yellow wires on the dilution so-

lenoid terminals for the right reservoir and the

white/blue and the brown/black for the left reser-

voir when the SELECTOR switch is in the “ON”

(left for the left reservoir or right for the right res-

ervoir) position and the start switch is momen-

tarily placed in the lower position. Connect the

brewer to the power source. After the approxi-

mate setting on the delay dial, the indication must

be:

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

b) 240 volts ac for two wire 240 volt models.

c) 100 volts ac for two wire 100 volt models, re-

Page 21

main for the approximate setting on the dilution
dial, then return to its previous indication.

If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the

ing Diagrams

and check the wiring harness.

Wir-

4. Remove both wires from the coil and check for
continuity across the coil terminals.

If continuity is present as described, reconnect the
white/blue and white/violet wires and proceed to #5.
If continuity is not present as described, replace the
solenoid valve.

5. Check the solenoid valve for coil action. Connect
the brewer to the power source, place the ON/OFF
or SELECTOR switch in the “ON” (T3 left, T6 left
or right) position and momentarily place the start
switch in the lower position and release. Listen
carefully after the approximate setting on the de­lay dial in the vicinity of the solenoid valve for a
“clicking” sound as the coil magnet attracts and
after the approximate setting on the dilution dial,
repels the plunger.

6. 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 block­age in the water line before or after 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, replace the
solenoid valve.

Removal and Replacement:

1. Remove all wires from the solenoid valves.

2. Turn off the water supply to the brewer.

3. Disconnect the water lines to and from the sole­noid valves.

4. Remove the two #8-32 keps nuts holding the
mounting bracket to the trunk base.

5. Lift out the bracket.

6. Remove the two #10-32 slotted-head screws hold­ing the solenoid valve to the mounting bracket.

7. Securely install the new solenoid valve to the
mounting bracket.

8. Attach the mounting bracket to the trunk base.

9. Securely fasten the water lines to and from the
solenoid valves.

10. Refer to Fig. 3 when reconnecting the wires.

10145 072600

SERVICE (cont.)
DILUTION TIMER

FIG. 11 DILUTION TIMER

P2207.40

Location:

The dilution timer is located inside the hood on the
right side. It consists of the dial plate with two dials
and circuit board.

Test Procedure:

1. Disconnect the brewer from the power source and

remove the wires from terminals TL3, TL4, & TL5

of the timer and rotate both dials fully counter-

clockwise.

2. With a voltmeter, check the voltage across termi-

nals TL1 and TL2 when the ON/OFF switch is in

the "ON" position. Connect the brewer to the power

source. The indication must be:

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

b) 240 volts ac for two wire 240 volt models.

c) 100 volts ac for two wire 100 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

ing Diagrams

and check the wiring harness.

Wir-

4. Check for continuity across the green and red/

black wires when the start switch is held in the

lower position.

Page 22

If continuity is present as described, reconnect the
wires to terminals TL3, TL4, & TL5 of the timer board
and proceed to #5.
If continuity is not present as described, refer to the

Wiring Diagrams

and check the wiring harness.

5. With a voltmeter, check the voltage across termi­nals TL1 and TL4 when the ON/OFF or selector
switch is in the "ON" (T3 left, T6 left or right) po­sition and the start switch is momentarily placed
in the lower position. Connect the brewer to the
power source. After a delay of approximately three
minutes, the indication must be:
a) 120 volts ac for two wire 120 volt models for
approximately one minute and then return to its
previous indication.
b) 240 volts ac for two wire 240 volt models for
approximately one minute and then return to its
previous indication.
c) 100 volts ac for two wire 100 volt models for
approximately one minute and then return to its
previous indication.

6. Disconnect the brewer from the power source.

If voltage is present as described, the timer is operat­ing properly. Adjust the timer dials as required.
If voltage is not present as described, replace the timer.

Removal and Replacement:

1. Remove all wires from the timer.

2. Remove the circuit board and dial plate from the
brackets.

4. Install the new dial plate and circuit board to the
brackets.

5. Refer to Fig. 12 when reconnecting the wires.

6. Adjust the timer dials as required.

WHI/BLU to Dilution Solenoid
RED/BLK to Start Switch

WHI to Brew Timer (100V &
120V Models)
RED to Brew Timer (240V
Models)

WHI/VIO to ON/OFF Switch

GRY to Selector Switch (Half Batch
Option Only)
PNK to Selector Switch (Half Batch
Option Only)

FIG. 12 DILUTION TIMER TERMINALS

GRN to Start Switch

PNK to Selector Switch
(Half Batch Option Only)
GRY to Selector Switch
(Half Batch Option Only)

P1281

10145 072600

SERVICE (cont.)
LIMIT THERMOSTAT

4. Remove the blue/black wire from the limit ther-

mostat.

5. With a voltmeter, check the voltage across the ex-

posed terminal of the limit thermostat and the
white wire or red wire on the tank heater. Connect
the brewer to the power source. The indication
must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.

6. Disconnect the brewer from the power source.

If voltage is present as described, reconnect the blue
wire to the limit thermostat. The limit thermostat is
operating properly.
If voltage is not present as described, replace the limit
thermostat.

FIG. 13 LIMIT THERMOSTAT

P2207.40

Location:

The limit thermostat is located inside the hood on

the tank lid.

Test Procedure:

1. Disconnect the brewer from the power source and
remove the black wire from the limit thermostat.

2. With a voltmeter, check the voltage across the
black wire removed from the limit thermostat and
the white wire or red wire on the tank heater ter­minal. Connect the brewer to the power source.
The indication must be:
a) 120 volts ac for two wire 120 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.

3. Disconnect the brewer to from the power source.

If voltage is present as described, reconnect the black
wire and proceed to #4.
If voltage is not present as described, refer to the

ing Diagrams

and check the wiring harness.

Wir-

Removal and Replacement

1. Remove both wires from the limit thermostat ter­minals.

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

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

4. Refer to Fig. 14 when reconnecting the wires.

BLU/BLK to
Control
Thermostat

BLK to Power Cord or
Power Connector

P1800

FIG. 14 LIMIT THERMOSTAT TERMINALS

Page 23

10145 072600

SERVICE (cont.)

ON/OFF SWITCH (T3 W/OUT HALF BATCH) or SE­LECTOR SWITCH (T3 W/HALF BATCH and T6 BREW­ERS)

6. Check for continuity across the center and end
terminals of the top row when the switch is in the
“ON” (left) position.

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

T3 Brewers W/Half Batch Option

1. Disconnect the brewer from the power source.

2. Remove the black wire from the top center switch
terminal.

3. With a voltmeter, check the voltage across the
black wire removed from the selector switch and
the white wire or red wire on the tank heater.

4. Connect the brewer to the power source.The indi­cation must be:
a) 120 volts ac for two wire 120 volt models.
a) 240 volts ac for two wire 240 volt models.
b) 100 volts ac for two wire 100 volt models.

5. Disconnect the brewer from the power source.

P1832.40

FIG. 15 ON/OFF OR SELECTOR SWITCH

Location:

The ON/OFF or SELECTOR switch is located in the

left front of the hood.

Test Procedure:
T3 Brewers W/Out Half Batch Option

1. Disconnect the brewer from the power source.

2. Remove the black and white/violet wires from the
switch terminals.

3. With a voltmeter, check the voltage across the
black wire removed from the ON/OFF switch and
the white wire remaining on the switch terminal.

4. Connect the brewer to the power source.The indi­cation must be 120 volts ac for two wire 120 volt
models.

5. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.
If voltage is not present as described, refer to the

ing Diagrams

and check the wiring harness.

Wir-

If voltage is present as described, proceed to #6.
If voltage is not present as described, refer to the

ing Diagrams

and check the wiring harness.

Wir-

6. Check for continuity across the center and left or
right terminals of the top row when the switch is
"FULL" or "HALF" (left or right) position.

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

7. On T3 brewers disconnect the pink and gray wires
from the left and center terminals.

8. Check for continuity across the left and center ter­minals in rows two, three and four with the switch
in the half batch position.

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

Page 24

10145 072600

SERVICE (cont.)
ON/OFF SWITCH (T3 W/OUT HALF BATCH) or SE­LECTOR SWITCH (T3 W/HALF BATCH and T6
BREWERS)(cont.)

T6 Brewers

1. Disconnect the brewer from the power source.

2. Remove the black wire from the top center switch
terminal.

3. With a voltmeter, check the voltage across the
black wire removed from the selector switch and
the white wire or red wire on the tank heater.

4. Connect the brewer to the power source.The indi­cation must be:
a) 120 volts ac for two wire 120 volt models.
a) 240 volts ac for two wire 240 volt models.
b) 100 volts ac for two wire 100 volt models.

5. Disconnect the brewer from the power source.

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 when reconnecting the wires.

BLK to Power Cord (100V & 120V
Models)

WHI/VIO to Dilution
Timer TL1

BLK to Power Connector (240V
Models)

If voltage is present as described, proceed to #6.
If voltage is not present as described, refer to the

ing Diagrams

and check the wiring harness.

Wir-

6. Check for continuity across the center and left or
right terminals of the top row when the switch is
"ON" (left or right) position.

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

7. Check for continuity across the left and center ter­minals in rows two, three and four with the switch
in the "ON" (left or right) position.

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

WHI/VIO

WHI/VIO to Brew
Timer TL1

T3 BREWERS W/OUT HALF BATCH OPTION

WHI/VIO to Brew Timer
TL1

GRY to Brew Timer

GRY to Dilution
Timer (Delay)
GRY to Dilution
Timer (Dilution)

T3 BREWERS W/HALF BATCH OPTION

WHI/VIO to Brew
Timer TL1

WHI/BRN to
Dilution Timer TL1

BRN/BLK to Left
Dilution Solenoid

WHI to Dilution Timer TL2 (100V
& 120V Models)
RED to Diltuion Timer (240V
Models)

BLK to Power Cord (100V & 120V Models)
BLK to Power Connector (240V Models)

WHI/VIO to Dilution Timer TL1

PNK to Brew Timer

PNK to Dilution Timer (Delay)
PNK to Dilution Timer
(Dilution)

BLK to Power Connector (120V
Models)
BLK to Power Connector (240V
Models)

YEL to Right Dilution
Solenoid

WHI (100V & 120V
Models)
RED (240V Models)

T6 BREWERS

Page 25

FIG.16 ON/OFF SWITCH TERMINALS

P1282

10145 072600

SERVICE (cont.)
START 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.

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. 18 when reconnecting the wires.

GRN to Dilution
Timer TL5

WHI/YEL to Brew
Timer TL5

P1833.40

FIG. 17 START SWITCH

Location:

The start switch is located in the right front of the

hood.

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.

If continuity is present as described, proceed to #4.
If continuity is not present as described, replace the
switch.

RED/BLK to
Dilution Timer
TL3

FIG. 18 START SWITCH TERMINALS

WHI/ORN to Brew
Timer TL3

P1283

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.

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10145 072600

SERVICE (cont.)
TANK HEATER

FIG. 19 TANK HEATER

P1833

Location:

The tank heater is located inside the tank and se-

cured to the tank lid.

Test Procedures:

1. Disconnect the brewer from the power supply.

2. With a voltmeter, check the voltage across the

black and white wires on 100 volt and 120 volt
models or the black and red wires for 240 volt
models. Connect the brewer to the power source.
The indication must be:
a) 120 volts ac for two wire 120 volt models .
b) 240 volts ac for two wire 240 volt models.
c) 100 volts ac for two wire 100 volt models.

3. Disconnect the brewer from the power source.

Removal and Replacement:

1. Disconnect the black wire and the white or red
wire from the tank heater terminals.

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

3. Disconnect vent tube.

4. Remove the six #10 thread cutting screws secur­ing the tank lid to the tank.

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

6. Remove the two hex nuts securing the tank heater
to the tank lid. Remove tank heater with gaskets
and discard.

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

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

9. Secure sprayhead tube to hood using a hex nut.

10. Install sprayhead.

11. Connect vent tube to fitting.

12. Reconnect the wires to the limit thermostat, tank
heater. See limit thermostat section in this manual
when reconnecting wires.

13. Refer to Fig. 20 when reconnecting the tank heater
wires.

BLK to Control
Thermostat

WHI to Power Cord
(100v & 120V Models)
RED to Power Connector
(240V Models)

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 black wire and the white wire or
red wire from the tank heater terminals.

5. Check for continuity across the tank heater termi­nals.

If continuity is present as described, reconnect the
wires, the tank heater is operating properly.
If continuity is not present as described, replace the
tank heater.
NOTE- If the tank heater remains unable to heat, re-

move and inspect heater for cracks in the sheath.

Page 27

FIG. 20 TANK HEATER TERMINALS

P1284

10145 072600

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10145 072600