Bunn DUAL010000 User Manual

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OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: [phone] FAX: [phone]

www.bunnomatic.com

INTRODUCTION

This equipment will brew two half-gallon, gallon, or gallon and a half batches of coffee into awaiting servers
at the push of a button. The brewer is also equipped with a hot water faucet for allied beverage use and is designed
to interface with a BUNN® Grinder. The brewer is specifically designed for use with a BUNN® 1.5 GPR server. It
is only for indoor use on a sturdy counter or shelf.

WARRANTY

Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be 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 three 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.

USER NOTICES

The notices on this brewer should be kept in good condition. Replace unreadable or damaged labels.

12364.0000

20201.5600

Page 2

27040 050301

USER NOTICES (cont.)

ELECTRICAL REQUIREMENTS

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

L2 RED

200 or 240V A.C.

L1 BLACK

Requires 2-wire, grounded
service rated 200 to 240
volts ac, 30 amp, single
phase 50 or 60 Hz.

Page 3

L2 RED

WHITE

NEUTRAL

L1 BLACK

120V A.C.

208 or 240V A.C.

120V A.C.120V A.C.

Requires 3-wire, grounded
service rated 120/208 or 120/
240 volts ac, 30 amp, single
phase, 60 Hz.

Initial Set-Up.

Electrical Hook-Up

CAUTION – Improper electrical installation will damage electronic components.

1. An electrician must provide electrical service as specified.

2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.

3. Remove the front panel beneath the sprayheads.

Models with electronic control assemblies:

Place the tank heater switch at the top of the control assembly in the “OFF” position.

Models with electro/mechanical thermostats:

Rotate the control thermostat knob fully counterclockwise to the “OFF” position.

4. Feed the cord through the strain relief and connect it to the terminal block.

5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Replace

the front panel.

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.

PLUMBING REQUIREMENTS

This brewer must be connected to a cold water system with operating pressure between 20 and 90 psi (138
and 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).

PLUMBING HOOK-UP

1. Flush the water line and securely attach it to the flare fitting on the strainer/flow control located on bottom of

brewer.

2. Turn on the water supply.

INITIAL SET-UP

CAUTION – The brewer must be disconnected from the power source throughout the initial set-up, except when

specified in the instructions.
NOTE: ECA Models Only -This brewer is equipped with a temperature sensor that indicates when to brew and, when
selected, locks-out the start of a brew cycle until the water has heated to the optimum brewing temperature.

1. Remove the front panel beneath the sprayhead.

Models with electronic control assemblies:

Place the tank heater switch at the top of the control assembly in the “OFF” position.

Models with electro/mechanical thermostats:

Rotate the control thermostat knob fully counterclockwise to the “OFF” position.

2. Connect the brewer to the power source. Water will begin flowing into the tank.

3. When water stops flowing into the tank, remove the front panel and proceed as directed:

Models with electronic control assemblies:

Place the tank heater switch at the top of the control assembly in the “ON” position and replace the front panel.

Page 4

27040 032201

INITIAL SET-UP (cont.)

Models with electro/mechanical thermostats:

Rotate the control thermostat knob fully clockwise to the “ON” position and replace the front panel.

4. Wait approximately twenty minutes for the water in the tank to heat to the proper temperature.

5. Place an empty server beneath either brew station and the ON/OFF switch in the upper ("ON") position.

6. Triple-set Timers only: Place the brew station Selector switch in the 11⁄2 gallon position.

7. (A) Initiate a brew cycle; after water has stopped flowing from the funnel, place the ON/OFF switch in the lower
("OFF") position and check the water volume in the server. It should be 192 ounces (5.7 L) for 1 1/2 gallons.
If not, adjust the timer as required. Refer to
NOTE: Each batch setting must be adjusted individually, if they are not correct. Volumes are as follows:

1 gallon - 128 ounces (3.8L)

.5 gallon - 64 ounces (1.9L)
(B) If necessary adjust the needle valve to achieve desired water volume to be bypassed around the coffee filter
in the funnel.
NOTE: To increase the water bypass turn the needle valve counterclockwise, to decrease the water bypass turn
the needle valve clockwise. An adjustment of the needle valve will require a timer adjustment for volume.

8. Repeat step 7 until the proper water volume is achieved.

9. Repeat steps 5 through 8 for the remaining brew station.

10. The brewer is now ready for use in accordance with the coffee brewing instructions.

Adjusting Brew Volumes

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.

Page 5

27040 032201

OPERATING CONTROLS

BREW SELECTOR SWITCH (Triple - set timer models only)

Placing the switch in the 1⁄2 Gal, 1 Gal, or 11⁄2 Gal position selects the amount of coffee to be brewed in
subsequent brew cycles. Repositioning this switch after a brew cycle has been initiated does not change the brew
batch in progress.

ON/OFF SWITCH

Placing the switch in the unlighted lower position cuts power to the brew station warmer and stops brewing.
Stopping a brew cycle after it has been started will not stop the flow of water from the funnel. Placing the switch
in the lighted upper position supplies power to the brew station warmer and enables the brew circuit.

START SWITCH

Momentarily pressing and releasing this switch starts a brew cycle when the On/Off switch is in the lighted
upper position.

GRINDER SELECTOR SWITCH

Pressing the right or left side of the switch selects the corresponding brew station.

NOTE – The On/Off switch must be in the lighted upper position to initiate and complete a brew cycle.

COFFEE BREWING

1. Select the desired batch size.

2. Insert a BUNN® filter into the funnel.

3. Pour the proper amount of fresh ground coffee into the filter and level the bed of grounds by gently shaking.

4. Slide the funnel into the funnel rails.

5. Place an empty server under the funnel.
6 Place the On/Off switch in the lighted upper position. Momentarily press and release the start switch.

7. When brewing is completed, simply discard the grounds and filter.

CLEANING

1. The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all

surfaces on Bunn-O-Matic equipment.

2. Check and clean the sprayhead. The sprayhead holes must always remain open.
NOTE – In hard water areas, this may need to be done daily. It will help prevent liming problems in the brewer and
takes less than a minute.

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27040 032201

TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems
encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic
Technical Service Department.

• Inspection, testing, and repair of electrical equipment should be performed only by qualified
service personnel.

• All electronic components have 120 - 240 volt ac and low voltage dc potential on their terminals.
Shorting of terminals or the 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 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.

• Disconnect the brewer from the power source when servicing, except when electrical tests are
specified.

• Follow recommended service procedures.

• Replace all protective shields or safety notices.

Problem

Equipment will not operate.

Probable Cause

1. No power or incorrect voltage.

1. No waterBrew cycle will not start.

2. Water strainer/flow control
(.750 GPM)

Remedy

(A1) Check the terminal block for
120 volts across the red and white
terminals and the black and white
terminals on 120/208 or 120/240
volt brewers.

(A2) Check the terminal block for
200 volts on "B Series" brewers or
240 volts on "A Series" brewers
across the red and black terminals.

(B) Check circuit breakers or fuses.

Check plumbing and shut-off valves

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

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

Page 7

27040 041100

TROUBLESHOOTING (cont.)
Problem

Probable Cause

Remedy

Brew cycle will not start (cont.)

Automatic refill will not operate

3. ON/OFF switch

4. Start switch

5. Timer

6. Dispense Valve

7. Control Assembly (Electronic)

1. No water

2. Water strainer/flow control
(.750 GPM)

Refer to

Service

- ON/OFF switch for

testing procedures. See page 31

Refer to

Service -

Start switch for

testing procedures. See page 36

Refer to

Service -

Timer for testing

procedures. See page 38 or 41

Refer to

Service -

Dispense valve for

testing procedures. See page 21

Refer to

Service

- Control assembly
for testing procedures. See pages
22 thru 27

Check plumbing and shut-off valves.

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

3. Solenoid Valve

4. Limit thermostat (Electro/
mechanical and Electronic)

5. Overflow protection switch

6. (A) Level control board & level
probe. (Electro/mechanical con­trolled)

(B) Electronic controls

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

Refer to

Service

- Solenoid valve for
testing procedures. See page 35

Refer to

Service

- Limit thermostat
for testing procedures. See page 30

Refer to

Service -

Overflow protec­tion switch for testing procedures.
See page 32

Refer to

Service

- Level control board

for testing procedures. See page 28

Refer to

Service

- Electronic con­trols for testing procedures. See page
22 thru 27

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27040 032201

TROUBLESHOOTING (cont.)
Problem

Probable Cause

Remedy

Beverage level will not adjust
(Selector switch in any position)

Water flows into tank continuously
.

Water flows into tank continuously
(ON/OFF switch "ON").

Water from tank is not hot

1. Brew Selector switch

1. Solenoid valve

2A. Level control board and level
probe (Electro/mechanical)

2B. Control assembly (Electronic)

1. Timer

2. Overflow protection switch

1. Limit thermostat

CAUTION - Do not eliminate or by­pass limit thermostat. Use only re­placement part #23717.0001

Refer to

Service

- Selector switch for

testing procedures. See page 15

Refer to

Service

- Solenoid valve for

testing procedures. See page 35

Refer to

Service

- Level control board

for test procedures. See page 28

Refer to

Service

- Control assembly
for testing procedures. See page 22
thru 27

Refer to

Service

- Timer for testing

procedures. See page 38 or 41

Refer to

Service

- Overflow protec­tion switch for testing procedures.
See page 32

Refer to

Service

-Limit thermostat

for testing procedures. See page 30

2A. Control Thermostat (Electro/me­chanical)

2B. Control assembly (Electronic)

3. Contactor (Brewers with Recov­ery Booster)

4. Tank heaters

5. Triac assembly (Electronic)

Refer to

Service

- Control Thermo­stat for testing procedures. See page
19

Refer to

Service

- Control assembly
for testing procedure. See page 22
thru 27

Refer to

Service

- Contactor for test-

ing procedures. See page 17

Refer to

Service

- Tank heaters for

testing procedures. See page 37

Refer to

Service

- Triac assembly for

testing procedures. See page 26

Page 9

27040 032201

TROUBLESHOOTING (cont.)

Problem

Water from tank is not hot (cont.).

Server warmer is not hot.

Spitting or unusual steaming from
sprayhead or airvents.

Probable Cause

6. Relay (Brewers with Recovery
Booster)

1. ON/OFF switch

2. Warmer element

1A. Control thermostat (Electro/me­chanical)

1B. Control assembly (Electronic)

2. Triac assembly (Electronic)

Remedy

Refer to

Service

- Relay for testing

procedures. See page 33

Refer to

Service

- ON/OFF switch for

testing procedures. See page 31

Refer to

Service

- Warmer element

for testing procedures. See page 43

Refer to

Service

- Control thermo­stat for testing procedures. See page
19

Refer to

Service

- Control assembly
for testing procedures. See page 22
thru 27

Refer to

Service

- Triac assembly for

testing procedures. See page 26

Inconsistent beverage level in server.

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.

1. Strainer/flow control (.750 GPM)

2. Improper water pressure

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

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

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

Check operating water pressure to
the brewer. It must be between 20
and 90 psi (138 and 620 kPa) .

Page 10

27040 032201

TROUBLESHOOTING (cont.)

Problem

Inconsistent beverage level in
server (cont.).

Consistently high or low beverage
level in server.

Dripping from sprayhead.

Water overflows filter.

Probable Cause

3. Dispense valve

1. Timer adjustment

1. Dispense valve

1. Bypass valve

2. Needle Valve

3. Type of paper filters

Remedy

Refer to

Service -

Dispense valve for

testing procedures. See page 21

Adjust the timer as required to
achieve the recommended volume
for each brew cycle.

Refer to

Service

- Dispense valve

for testing procedures. See page 21

Refer to

Initial Set-Up

on page 5 step

#7. For test procedures see page 12

Refer to

Inital Set-Up

on Page 5 step

#7

BUNN® paper filters should be used
for proper extraction.

Beverage overflows server.

Weak beverage.

4. No sprayhead

1. Beverage left in server

2. Timer adjustment

3. Dispense valve

1. Type of paper filters

2. Coffee

Check sprayhead

The brew cycle should be started
only with an empty server under the
funnel.

Adjust the timer as required to
achieve the recommended volume
for each brew cycle.
Refer to

Service

- Timer for testing

procedures. See page 38 or 41

Refer to

Service

- Dispense valve for

testing procedures. See page 21

®

BUNN

paper filters should be used

for proper extraction.

A sufficient quantity of fresh drip or
regular grind should be used for
proper extraction.

Page 11

27040 032201

TROUBLESHOOTING (cont.)

Problem

Weak beverage (cont.)

Probable Cause

3. Sprayhead

4. Funnel loading

5. Water temperature

Remedy

B.O.M. sprayhead #01082.0002
should be used to properly wet the
bed of ground coffee in the funnel.

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

Empty the server, remove its cover,
and place the server on the warmer.
Place empty funnel over the server
entrance, with ON/OFF switch in the
"ON" position press the start switch
and release it. Check the water tem­perature immediately below the
sprayhead with a thermometer. The
reading should not be less than
195˚F(91˚C).

Brewer is making unusual noises.

1. Solenoid (Inlet)

2. Plumbing lines

3. Water supply

4. Tank Heaters

5. Contactor

The nut on back of the solenoid
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 be higher than 90 psi (620
kPa). Install a regulator if necessary
to lower the working pressure to
approximately 50 psi (345 kPa).

Remove and clean lime off tank heat­ers.

Check for low voltage

Page 12

27040 032201

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 unplugged
when servicing, except when electrical tests are re­quired and the test procedure specifically states to
plug in the brewer.

COMPONENT ACCESS

WARNING - Unplug the brewer 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 warmer base
plate.

for assistance in determining the

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Page 13

SERVICE (cont.)

BYPASS VALVE

P773

Location:

The bypass valves are located inside the right front

and the center front of the hood.

Test Procedures:

1. Disconnect the brewer from the power source and
place a server beneath the funnel.

2. Check the water level in the tank to confirm that it
is within 1/2" from the top of the tank.

3. Connect the brewer to the power source.

4. Check the bypass valve for coil action. Place the
ON/OFF switch in the "ON" position, press and
release the BREW switch. Listen carefully in the
vicinity of the bypass valve for a "clicking" sound as
the coil magnet attracts and repels the plunger.

5. Disconnect the brewer from the power source.

If the sound is heard as described, there may be a
blockage in the bypass valve or the water line to the
sprayhead. Remove the bypass valve and inspect for
wear, and remove waterborne particles.
If the sound is not heard as described, proceed to #6.

Page 14

LEFT AND RIGHT VALVE

P774

SERVICE (cont.)

BREW SELECTOR SWITCH

12. Reconnect the pink wire to the grind switch.

13. Disconnect the tan wire from the left or right
selector switch and tan wire from interface socket.

14. Check for continuity across the tan wires.

15. Reconnect the tan wires.

16. With the selector switch set at 1 and 1-1/2 gallon,
disconnect the white/violet from the bypass valve.

17. Check for continuity across the white/violet wire
and terminal on bypass valve.

18. Reconnect the white/violet wire to the terminal on

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the bypass valve.

19. Disconnect the white/red wire from the dispense
valve.

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20. Check for continuity across white/red wire and
terminal on dispense valve.

21. Reconnect white/red wire to the terminal on the

P775

dispense valve.

Location:

The brew selector switches are located in the front

left and right side of the hood.

Test Procedure:

1. Disconnect the brewer from the power supply.

2. Separate the connector on the selector switch
harness from the brew timer circuit board.

3. Carefully slide the plastic cover off of the con­nector from the switch harness.

4. Check for continuity across the pink and tan wires
on the connector when the switch is in the 1/2
gallon position. Continuity must not be present in
any other switch position.

5. Check for continuity across the pink wire and gray
wire when the switch is in the 1 gallon position.
Continuity must not be present in any other posi­tion.

6. Reattach the connector to the brew timer circuit
board.

7. Disconnect the gray wire from the left or right
selector switch and gray wire from the interface
socket.

8. Check for continuity across the gray wires.

9. Reconnect the gray wires from the selector switches
and the interface socket.

10. Disconnect the pink wire from the left or right
selector switch to the grinder switch.

11. Check for continuity across the pink wire and the
terminal on the grind switch.

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

Removal and Replacement:

1. Disconnect the connector on the selector switch
harness from the brewer timer circuit board.

2. Disconnect wires from the selector switch, inter­face socket, dispense valve and bypass valve.

3. Loosen the set screw on the switch knob.

4. Remove the 9/16" nut and washer holding the
switch to the hood.

5. Remove the switch.

6. Install the new switch. The positioning tab must be
in the hole in the hood for proper switch and knob
alignment.

7. Install the knob so that the arrow lines up in the 1­1/2 gallon position when the switch is turned to the
full right position.

8. Reattach the connector to the brew timer circuit
board.

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

Page 15

SERVICE (cont.)

WHI/VIO to Left or Right By-Pass Valve

WHI/RED to Left or Right Dispense Valve

To Left or Right Timer

GRY to Left or Right Selector Switch
to GRY Lead on Interface Socket

PNK from Left Switch to Grinder
Switch (Lower Left)
PNK from Right Switch to Grinder
Switch (Lower Right)

TAN to Left or Right Selector Switch to
TAN Lead on Interface Socket

TAN

GRY

PNK

FIG. 4 BREW SELECTOR SWITCH TERMINALS

P776

Page 16

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