Bunn Coffeemaker CDBCF User Manual

CDBC, CDBCF

CDBCP, CDBCFP

S/N CDBC020213 & up

SINGLE CD, SINGLE CDF

CAUTION

DISCONTINUED VERSION

The information in this manual

is no longer current.

OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: (217) 529-6601 FAX: (217) 529-6644

35582.0000C

www.bunnomatic.com

USER NOTICES

Carefully read and follow all notices in this manual and on the equipment. All labels on the equipment should

be kept in good condition. Replace any unreadable or damaged labels.

# 00986.0000

! WARNING

DO NOT OVERLOAD CIRCUIT.

ALWAYS ELECTRICALLY GROUND

THE CHASSIS OR ADAPTOR PLUG.

DO NOT DEFORM PLUG OR CORD.

FOLLOW NATIONAL AND LOCAL

ELECTRICAL CODES.

KEEP COMBUSTIBLES AWAY.

FAILURE TO COMPLY RISKS EQUIPMENT

DAMAGE, FIRE OR SHOCK HAZARD.

READ THE ENTIRE

OPERATING MANUAL BEFORE

USING THIS PRODUCT

# 00656.0000

# 00658.0000

WARNING

DISCARD DECANTER

IF:

° CRACKED

° SCRATCHED

° BOILED DRY

° HEATED WHEN EMPTY

° USED ON HIGH FLAME

OR EXPOSED ELECTRIC

ELEMENTS

FUNNEL CONTENTS

ARE HOT

READ THE ENTIRE OPERATING MANUAL

BEFORE USING THIS PRODUCT

FAILURE TO COMPLY RISKS INJURY

# 12364.0000

# 10044.0000

35582 041503

Page 3

ELECTRICAL REQUIREMENTS

CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up.

Model 15 has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, single

phase, 60 Hz.

L2 RED

WHITE

120V.A.C.

WHITE

NEUTRAL

L1 BLACK

120V.A.C.

208 or 240V.A.C.

120V.A.C.

NEUTRAL

L1 BLACK

Model 20 requires 2-wire, grounded service rated

Model 35 requires 3-wire, grounded service rated

120 volts ac, 20 amp, single phase, 60 Hz. Proceed as 120/208 or 120/240 volts ac, 20 amp, single phase, 60

follows:

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 the front panel beneath the sprayhead.

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

These brewers must be connected to a cold water system with operating pressure between 5 and 90 psi (34.5

and620kPa)froma ⁄2"orlargersupplyline. Ashut-offvalveshouldbeinstalledinthelinebeforethebrewer. 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 ⁄4" flare. Bunn-O-Matic does not recommend the use of a reverse-osmosis or deionized water supply

to this equipment.

NOTE - Bunn-O-Matic recommends ⁄4" copper tubing for installations of less than 25 feet and ⁄8" for more than

25 feet from the ⁄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.

2. Securely attach it to the flare fitting at the rear of the brewer.

3. Turn on the water supply.

35582 091503

Page 4

OPERATING CONTROLS

ON/OFF SWITCH

Pressing the "ON/OFF" switch (indicator glowing) supplies

power to the brew station warmer, enables the brew circuit, and

energizes the tank refill circuit. Pressing the switch again (indicator

not glowing) stops tank refilling and brewing and deenergizes the

brewstationwarmer. Stoppingabrewcycleafterithasbeenstarted

will not stop the flow of water into the decanter until the funnel is

empty.

NOTE – Hot water will be available at the faucet in a limited amount

whenthe"ON/OFF"indicatorisnotglowingbecausethetankwillnot

refill.

P1626

(CDBC models)

BREW SWITCH

Momentarily pressing and releasing the switch starts a brew

cycle when the "ON/OFF" indicator is glowing.

NOTE – The "ON/OFF" indicator must be glowing to initiate and

complete a brew cycle.

TEMP

BATCH SLECTORS (SINGLE CD only)

Pressing a batch size switch (1/2 gal. or 1 gal.) so the indicator

is glowing will set the brewer to deliver the desired brew volume.

P 2642

(SINGLE CD models)

ADDITIONAL WARMER SWITCHES (CDBC only)

Pressing any additional warmer switch so that the indicator is

glowing, supplies power to the associated warmer.

READY INDICATOR

This indicator glows when the preset temperature has been

achieved. The word "NOT" above "READY" will glow in all other

instances.

TEMPERATURE INDICATORS

The indicator glows to communicate the brew water tempera-

ture setting. Two indicators will glow when the temperature is

between them.

35582 041503

Page 5

INITIAL SET-UP

1. Insert an empty funnel into the funnel rails.

2. Place an empty decanter under the funnel.

3. Connect the brewer to the power source.

4. Model CDBC – Press the "ON/OFF" switch (indicator glowing).

Model SINGLE CD - Press the "1 gal" switch (indicator glowing) and the "ON/OFF" switch (indicator glowing).

5. Water will flow into the tank and stop when the tank is filled to its capacity.

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

7. To remove expansion water, place a small vessel beneath the faucet and open the faucet handle. Release it

when you hear the tank refilling. If brewer is not equipped with a faucet, place a empty decanter beneath the

funnel and initiate a brew cycle.

8. Place an empty decanter/server beneath the funnel and press the "ON/OFF" switch (indicator glowing) then

momentarily press and release the "BREW" switch.

9. Allow the cycle to finish and measure the amount of water in the decanter/server. It should be 64 ounces

2forCDBCmodelsand128ounces 2forSINGLECDmodels.Refertotheadjustmentssectionofthismanual

should the volume need to be increased or decreased.

10. Model SINGLE CD only press the "1/2 gal." switch, place an empty server beneath the funnel and press and

release the "BREW" switch. Allow the cycle to finish and measure the amount of water in the server. It should

be 64 ounces 2. Refer to the adjustments section of this manual should the volume need to be increased

or decreased.

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

COFFEE BREWING

1. Insert a BUNN^®filter into the funnel.

2. Pour fresh coffee grounds into the filter and level the bed of grounds by gently shaking.

3. Slide the funnel into the funnel rails.

4. Place an empty decanter/server beneath the funnel.

5. Model CDBC – Press the "ON/OFF" switch (indicator glowing) then momentarily press and release the "BREW"

switch.

Model SINGLE CD - Select 1/2 or 1 Gallon setting then momentarily press and release the "BREW" switch.

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

35582 041503

Page 6

POUR-OVER FEATURE

Models CDBCP & CDBCFP

If the brewer is equipped with a pour-over feature, follow the instructions below.

1. Remove the thumbscrew and pour-in lid from the top cover of the brewer and set aside.

2. Insert a BUNN^®filter into the funnel.

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

4. Slide the funnel into the funnel rails.

5. Place an empty decanter beneath the funnel.

6. Measure 64 ounces of cold water in a container and slowly pour the water into the pour-in opening.

NOTE: When using pour-over feature to brew a 1 gal. batch, pour in 64 ounces of cold water and wait

until drip out of funnel is complete then pour in 64 more ounces of cold water.

7. Press the ON/OFF button to activate the lower warmer (Indicator lamp on).

NOTE: Do not press the Brew Button. It is not necessary when using the pour-over feature.

8. 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.

35582 041503

Page 7

CDBC, SINGLE CD ADJUSTMENTS & OPTIONAL SETTINGS

HIDDEN

SWITCH

P1866

Setting Brew Temperature

The brewer is factory set to brew at 200°F (93˚C). To change this setting, press and hold the "HIDDEN" switch

beneath the "®". The word "TEMP" above the "ON/OFF" switch will glow to correspond with the temporary function

change of this switch. Repeatedly press and release the "ON/OFF" switch until one of the bank of temperature

indicators shows the approximate desired temperature. When two indicators are glowing, the temperature is

approximately the number between them.

Setting Brew Lockout

Thebrewerisfactorysetwiththebrewlockoutdisabled.Brewlockoutpreventsstartingabrewcycleiftheready

indicator is not glowing. When an attempt at brewing cannot be allowed, the word "NOT" and "LOCKOUT" flash for

three seconds to indicate the reason the brew can't begin. To change the condition of the brew lockout, press and

hold the "HIDDEN" switch beneath the "®" and momentarily press the "BREW" switch.

Adjusting Automatic Warmer Shut-Off

The brewer is factory set with this feature disabled. The automatic warmer shut-off deenergizes all warmers

after a predetermined time period after the most recent brew cycle. To change the setting, press and hold the

"BREW"switchandthe"HIDDEN"switchbeneaththe"®"forfiveseconds, theentirebankoftemperatureindicators

will flash on-and-off. Release both switches. Pressing and releasing the "BREW" switch will select the number of

temperature indicators from none to five. When no indicators are glowing, this feature is disabled and all warmers

will be controlled only by their respective switches. When one of five indicators are glowing, it indicates the

approximate number of hours of delay before all warmers will be automatically deenergized after the most recent

brew cycle.

IMPORTANT: The tank must be full and fill solenoid shut off prior to making these adjust-

ments.

Adjusting Brew Volumes

CDBC models are factory set to deliver 64 ounces 2 for each brew cycle.

SINGLE CD models are factory set to deliver 128 ounces 2 for each brew cycle when 1 gal. option is selected

and 64 ounces 2 for each brew cycle when 1/2 gal. option is selected.

35582 041503

Page 8

ADJUSTMENTS & OPTIONAL SETTINGS (cont.)

BREW VOLUME SET-UP: Use the following steps when the setting is unknown or a different circuit board is being

installed.

1. Place an empty funnel in the funnel rails and an empty decanter/server or graduated vessel beneath the funnel.

2. Place the "ON/OFF" switch in the "ON", upper position.

3. Press and hold the brew start button until you hear the brew solenoid click on-and-off three times

(approximately 10 seconds). Release the button.

4. Allow the cycle to continue until the desired amount of water is dispensed and then turn "OFF" the brewer.

The brewer is now set to dispense this amount of water for each subsequent brew cycle.

To increase the amount of water for each brew cycle place an empty funnel in the funnel rails and an empty

decanter/server or graduated vessel beneath the funnel. Press the "ON/OFF" switch. Press and hold the "BREW"

switch until you hear the solenoid click on-and-off three times (approximately 10 seconds), then release the

"BREW" switch. Momentarily press and release the "BREW" switch once for each ounce (approximate) of water to

be added to the prior setting and allow the brew cycle to finish.

To decrease the amount of water for each brew cycle place an empty funnel in the funnel rails and an empty

decanter/server or graduated vessel beneath the funnel. Press the "ON/OFF" switch. Momentarily press and

release the "BREW" switch once for each ounce (approximate) of water to be removed from the existing setting.

Press and hold the "BREW" switch until you hear the solenoid click on-and-off three times (approximately 10

seconds), then release the "BREW" switch and allow the cycle to finish.

NOTE: For Model SINGLE CD, set 1/2 gallon and 1 gallon separately.

WATER SENSING THRESHOLD ADJUSTMENT PROCEDURE

1. Make sure the tank is full of water to be used for calibration. The water must be in contact with the refill probe.

2. Unplug the brewer from the power source, then press and hold the BREW button while power is reapplied.

3. Continue pressing the BREW button until the READY indicator begins to flash. Release the BREW button and

then press it again momentarily.

4. The new calibration is automatically completed within a few seconds. If the water is too pure for use with the

brewer, the READY indicator will flash very rapidly and the old calibration will be retained.

35582 021604

Page 9

PULSE BREW SETUP PROCEDURE (CDBC & SINGLE CD)

The pulse brew parameters (initial fill time, off times, and remaining on times) are entered using the following set-

by-example process.

1. First set the brew volume using the standard procedure in Brew Volume Setup.

2. Position an empty container under the sprayhead. Allow the tank to finish refilling. Make sure that the READY

lamp is on, or that the BREW LOCKOUT function is turned off.

3. PressandholdtheOFF/ONbutton.Thebrewvalvewillturnonafter10seconds.Releasethebutton.Thisbegins

the initial on-time setting. When the spray has continued for the desired time, momentarily press the OFF/ON

button.

4. The spray is now stopped and the off time setting has begun. Press the OFF/ON button momentarily to end

the off time.

5. Thesprayisnowonagainandtheremainingontimesettinghasbegun. PresstheOFF/ONbuttonmomentarily

at the end of the desired remaining on time.

6. The setup is now complete and the parameters are stored in memory. The spray will continue the off and on

cyclesuntilthebrewvolumeofstep1iscomplete. PressingtheOFF/ONbuttonagainwillterminatethebrewing

cycle, with the parameters stored in memory.

7. If only a preinfusion is desired, i.e. an initial on time followed by one off period, use the same procedure, but

stop after step 4 and allow the brew to finish the volume set in step 1. This will store the initial on time and off

time in memory.

Procedure for Disabling Pulse Brew or Preinfusion:

1. Position an empty container under the sprayhead. Allow the tank to finish refilling. Make sure that the READY

lamp is on, or that the BREW LOCKOUT function is turned off.

2. Press and hold the OFF/ON button. The brew valve will turn on after 10 seconds. Release the button.

3. Allow the spray to continue and press no buttons until spray stops. The pulse and preinfusion functions are

now disabled.

NOTE: When the brewer has been set up for pulse or preinfusion, the adjustment of brew volume is done the same

as always and has no effect on the pulse brew parameters. The pulsing is temporarily disabled while adjusting the

brew volume and automatically returns during normal brewing.

35582 041503

Page 10

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, andrepairofelectricalequipmentshouldbeperformedonlybyqualifiedservicepersonnel.

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.

Theuseoftwowrenchesisrecommendedwheneverplumbingfittingsaretightenedorloosened. Thiswillhelp

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.

Before troubleshooting this brewer, check for the following:

Control Boards

1. Make sure ribbon cable is properly attached to the control board (ALL PINS INSERTED INTO PLUG).

2. Makesurethereisanyloninsulatingwasherundereachscrewheadthatholdsthecontrolboardtotheplastic

front end cap. This is important for proper operation.

3. Make sure before servicing brewer that voltage is present at control board.

4. Press any warmer switch or observe if any indicator lights are glowing on the control panel. If so, proceed

with testing. If not, check for voltage across pins 1 & 2 of the ten pin J1 connector (black and white wires). If

voltage is present, replace the control board. If voltage is not present, check wiring and voltage across terminal

block (black and white). Correct the problem and retest before proceeding with testing.

35582 041503

Page 11

TROUBLESHOOTING (cont.)

REFILL CIRCUIT

PROBLEM

PROBABLE CAUSE

REMEDY

Will not fill or refill

1. Power off to brewer

Presswarmerswitchesoncontrol

panel to determine if power is ON.

2. Water shut off

3. Display flashing

Make sure water is ON.

Brewer has shut down due to

malfunction(SeeDiagnosticChart

in manual, Page 21, or under top

lid of brewer).

4. ON/OFF Switch

Make sure ON/OFF Switch is "ON"

and indicator is lit.

5. Lime build up on Probe

Remove the Probe and check for

lime deposit on tip. Clean and

reinstall.

6. Refill Valve or Control Board

Disconnect the brewer from the

power source and remove wires

from refill valve coil. Check for

continuity across the terminals of

the solenoid coil. If continuity is

notpresent,replacetherefillvalve

(See page 29). If continuity is

present, the coil may be stuck

closed. Shut water off to brewer.

SettheON/OFFswitchtothe"OFF"

position.Openthefaucetanddrain

water down in the tank until flow

stops or slows to a trickle. Attach

a voltmeter to the terminals of the

refillsolenoid.Connectthebrewer

to the power source. Press the

switch "ON". Within five seconds,

voltage should be present at the

solenoid terminals. If voltage is

not present, refer to the wiring

diagrams and check the wiring

harness.

Reset the Water Sensing Thresh-

old Adjustment Procedures on

page 9.

7. Water is too conductive for

proper operation when using the

factory setting of sensing thresh-

old.

35582 041503

Page 12

TROUBLESHOOTING (cont.)

REFILL CIRCUIT (cont.)

PROBABLE CAUSE

PROBLEM

REMEDY

Fill or refill does not shut "OFF"

(ON/OFF Switch "ON")

1. Lime build up on probe

Remove Probe and check for lime

depositsontip.Cleanandreinstall.

2.WaterLevelProbeSensingSys-

tem

Disconnect the brewer from the

power source. Disconnect the J3

connector from the control board.

Check for continuity from the nut

on top of the level probe to pin 1 of

the plug, continuity should be

present. Pull the temperature

probe up about an inch from the

grommet. Check for continuity

from the outside surface of the

temperatureprobeandpin4ofthe

plug,continuityshouldbepresent.

Connect the J3 plug to the control

board and proceed to step 3.

3. Refill valve or control board

Press ON/OFF switch to "ON" (In-

dicator lamp should be lit). If wa-

ter continuously flows out of air

vent tube, disconnect the brewer

from the power source. If water

flow stops, replace the control

board. If water flow does not stop,

repair or replace the refill sole-

noid. (See page 29)

4. Water is too conductive for

proper operation when using the

factory setting of sensing thresh-

old.

Reset the Water Sensing Thresh-

old Adjustment Procedures on

page 9.

Fill or refill does not shut "OFF"

(ON/OFF Switch "OFF")

1. Refill valve or control board

If water continuously flows out of

air vent tube, disconnect the

brewer from the power source. If

water flow does not stop, repair or

replace the refill solenoid. If the

valve closes when power is re-

moved, replace the control board.

(See page 23)

35582 091503

Page 13

TROUBLESHOOTING (cont.)

HEATING CIRCUIT

PROBLEM

PROBABLE CAUSE

REMEDY

Water does not heat to proper

temperature

1. Display flashing

Brewer has shut down due to mal-

function (See Diagnostic Chart in

manual,Page21,orundertoplid).

IMPORTANT: Make sure no tem-

perature tests are taken before the

ready light is "ON". Tank tempera-

turemustbestabilizedbeforeread-

ings are taken.

Removeprobeandgrommet.Look

into hole on tank lid. Water must

be within one inch from top of

tank.

2. Water not touching tempera-

ture probe

Disconnect the brewer from the

power source. Disconnect the J3

connector from the control board.

Check for continuity from the tank

mounting screw where the green

wire mounts, to pin 2 of the plug,

continuity should be present. Pull

the temperature probe up about

an inch from the grommet. Check

for continuity from the outside

surface of the temperature probe

and pin 4 of the plug, continuity

should be present. Connect the J3

plug to the control board and pro-

ceed to step 4.

3. Dry Plug In Probe Sensing Sys-

tem

35582 091503

Page 14

TROUBLESHOOTING (cont.)

HEATING CIRCUIT (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Water does not heat to proper

temperature (cont.)

4. Temperature Probe

Removetheprobefromthegrom-

met and submerge in a water bath

ofapproximately70°F(21°C).Con-

nect an ohmmeter to pins 3 and 4

oftheJ3connector.At60°F(16°C)

the reading should be 15.3k 2k

OHMS, at 70°F(21°C) the reading

should be 11.8k 2k OHMS, and

at 80°F(27°C) the reading should

be 9.3k 2k OHMS. If the probe is

within these parameters, recon-

nect the J3 plug to the control

board.

IMPORTANT: Make sure no tem-

perature tests are taken before the

ready light is "ON". Tank tempera-

turemustbestabilizedbeforeread-

ings are taken.

5. Limit Thermostat

6. Tank Heater

Disconnect the brewer from the

power source. Check for continu-

ity across the limit thermostat ter-

minals. Continuity should be

present. If not replace the limit

thermostat.(See page 26)

Disconnect the brewer from the

power source. Check for continu-

ity between the white terminal of

the terminal block (or Red termi-

nal on 208/240 volt models) and

the black wire on the relay on the

control board. There should be a

low OHM reading. If no continuity

ispresent,checkforawiringprob-

lem, then replace the tank heater if

no wiring problem is found. (See

page 27)

Spitting or excessive steaming

1. Lime build up on temperature

probe, tank or tank heater

Inspect probe and tank assembly

forexcessivelimedeposits.Delime

as required.

35582 041503

Page 15

TROUBLESHOOTING (cont.)

HEATING CIRCUIT (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Spitting or excessive steaming

(cont.)

2. Temperature Probe

Removetheprobefromthegrom-

met and submerge in a water bath

ofapproximately70°F(21°C).Con-

nect an ohmmeter to pins 3 and 4

oftheJ3connector.At60°F(16°C)

the reading should be 15.3k 2k

OHMS, at 70°F(21°Cº the reading

should be 11.8k 2k OHMS, and

at 80°F(27°C) the reading should

be 9.3k 2k OHMS. If the probe is

within these parameters, recon-

nect the J3 plug to the control

board.

3. Control Board

Set the temperature to 200°F

(93°C). Let tank temperature sta-

bilize. If temperature in tank is

abovetemperaturesettingbymore

than 7°F(3.9°C), replace the con-

trol board.(See page 23)

Brewer is making unusual noises

1. Plumbing lines

2. Water supply

3. Lime build up

Plumbing lines should not rest on

the counter top.

The brewer must be connected to

a cold water supply.

Remove the tank lid and clean

insideoftankwithadelimingagent,

if necessary.

35582 041503

Page 16

TROUBLESHOOTING (cont.)

BREWING CIRCUIT

PROBLEM

PROBABLE CAUSE

REMEDY

Brew cycle will not start

1. Display flashing

Brewer has shut down due to

malfunction(SeeDiagnosticChart

in manual, Page 21, or under top

lid of brewer).

2. No water

Water lines and valves to the

brewer must be open.

3.Nopowerorincorrectvoltageto

the brewer

Check for voltage across the black

and white terminals at the termi-

nal block.

4. ON/OFF switch not in the "ON"

position

The indicator lamp must be lit

5. Low water temperature (Brew

lockout is enabled)

Allow brewer to heat until ready

lamp is lit, or disable the brew

lockout feature. (See page 8)

6. Water not touching refill probe

inside tank

Press ON/OFF switch (indicator

must be lit). Brewer will refill until

water touches probe inside tank.

Water must be in contact with

refill probe before brew cycle will

start.

7. Switch panel

Disconnect the brewer from the

power source. Disconnect the rib-

bon connector from the control

board. Check for continuity be-

tween pins 1 & 2 (An arrow on the

connector indicates pin 1). No

continuityshouldbepresent.Press

the BREW switch. Continuity

should be present for as long as

the switch is held "ON". If no con-

tinuity is present, replace the

switchmembranedecal.(Seepage

24)

35582 041503

Page 17

TROUBLESHOOTING (cont.)

BREWING CIRCUIT (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Brew cycle will not start (cont.)

8. Control board or dispense valve

If the switch panel is operating

properly, proceed as follows. At-

tach a voltmeter to the terminals

of the dispense solenoid. Connect

the brewer to the power source.

Turn on the brewer and press the

BREW switch. Voltage should be

present at the solenoid terminals.

If voltage is not present, refer to

the wiring diagrams and check

the wiring harness. If voltage is

present, check for continuity

across the terminals of the sole-

noid coil. If continuity is not

present, replace the solenoid (See

page 25). If continuity is present,

the valve may be stuck closed.

Consistently low beverage level in

the dispenser or beverage over-

flows dispenser

1. Brew volume

Set up brewer according to in-

structionsinsection Adjustments-

Brew Volumes. (See page 8) Us-

ing a stop watch or second hand,

time the length of the brew cycle.

Record this time inside the top lid.

Ifserviceiseverneededagain,use

the time as reference to determine

if time has changed.

2. Lime build up

3. Dispense Valve

Inspect the dispense valve and

spray head for excessive lime de-

posits. Delime as required.

Remove dispense valve and clear

any obstructions. Rebuild or re-

placevalveifnecessary.(Seepage

25)

35582 041503

Page 18

TROUBLESHOOTING (cont.)

BREWING CIRCUIT (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Dripping from spray head

1. Lime build up

Inspect the tank assembly for ex-

cessive lime deposits. Delime as

required.

2. Dispense valve

Remove the dispense valve and

clear any obstructions. Rebuild or

replacethevalveifnecessary.(See

page 25)

Weak beverage

1. Sprayhead

A clean spray-head must be used

for proper extraction.

2. Water temperature

Place an empty brew funnel on an

empty decanter beneath the

sprayhead. Initiatebrewcycleand

check the water temperature im-

mediately below the sprayhead

with a thermometer. The reading

mustnotbelessthan195°F(91°C).

Adjust the temperature setting to

increase the water temperature.

RefertoInitialSet-upinstructions.

3. Filter type

BUNN^®paper filters must be used

for proper extraction.

4. Coffee grind

5. Funnel loading

A fine drip or grind must be used

for proper extraction.

The BUNN^®paper filter must be

centered in the funnel and the bed

of grounds leveled by shaking

gently.

35582 041503

Page 19

TROUBLESHOOTING (cont.)

BREWING CIRCUIT (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Dry coffee grounds remain in the

funnel

1. Sprayhead

Make sure sprayhead is present

and holes are clear and unob-

structed.

2. Funnel loading

1. Warmer

The BUNN^®paper filter must be

centered in the funnel and the bed

ofgroundsleveledbyshakinggen-

tly.

Low beverage serving tempera-

ture

Disconnect the brewer from the

powersource.Removethewarmer

plate and turn upside down to ex-

pose the warmer terminals. Re-

move the two wires. Check for

continuity across the two warmer

terminals. If continuity is not

present, replace the warmer ele-

ment (See page 30). If continuity

is present, reconnect the wires to

the warmer element. Check for

voltage at the warmer terminals.

Turn the warmer switch "ON". The

indicator light will come on. Volt-

age should be present at the ter-

minals. If not, disconnect power

supply and check wiring and

switch.

35582 041503

Page 20

DIAGNOSTICS

The bank of temperature indicators indicates that a fault exists. Count the number of flashes between pauses and

use this chart as a guide to investigating the fault.

FLASHES CAUSE

THINGS TO CHECK

Dry Plug - In Fault -

Water Pressure (Is water shut "OFF")

Sheath of temperature probe dry for 10 minutes after power-up Temperature probe wiring

Fill valve wiring, function, & strainer

Green wire between tank and circuit board

Low Tank Level Fault -

Level probe dry for 7 minutes after fill valve is energized

Water pressure (Is water shut "OFF")

Level probe wiring

Temperature probe wiring

Fill valve wiring, function, & strainer

Low Water Temperature Fault -

Sensor in tank is calling for heat for 30 minutes or more

Tank heater wiring & function

Temperature probe wiring

Tank Sensor Disagreement -

Level probe detects water, but dry plug-in probe dry

Temperature probe wiring

Level probe wiring

Green wire between tank and circuit board

Temp Sensor Out-of-Range - High

Temp Sensor Out-of-Range - Low

Sensor not connected to circuit board

Sensor wires shorted together or to chassis

35582 041503

Page 21

SERVICE

This section provides procedures for testing and

replacing various major components used in this

brewer should service become necessary. Refer to

Troubleshooting for assistance in determining the

cause of any problem.

WARNING - Inspection, testing, and repair of electri-

cal equipment should be performed only by qualified

service personnel. The brewer should be unplugged

when servicing, except when electrical tests are re-

quired 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 replace-

ment of any component.

All components are accessible by the removal of

the top cover or warmer housing, front access panel

and warmer plate(s).

P2675

FIG. 1 COMPONENT ACCESS

The top cover is attached with one #4-40 screw.

The front access panel is attached with four #6-32

screws.

Each warmer assembly is attached with three #4-

40 screws.

Contents

Control Board - CDBC & SINGLE CD .................23

Switch Panel - CDBC & SINGLE CD ..................24

Dispense Valve ..................................................25

Limit Thermostat ...............................................26

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

Refill Valve.........................................................29

Warmer Elements ..............................................30

Wiring Diagrams............................................... 31

35582 041503

Page 22

SERVICE (cont.)

CONTROL BOARD

Removal and Replacement:

1. Disconnect the black wire and blue wire from the

relay on the control board.

2. Disconnect the 10-pin connector and the 4-pin

connector from the main wiring harness.

3. Disconnect the 11-pin connector from the control

panel.

4. Remove the four #6 screws and four nylon wash-

ers and the two #4-40 screws securing the control

board to the end cap assembly.

5. Install a new control board and secure with the

four #6 screws and nylon washers and the two #4-

40 screws to the end cap assembly.

ES ARE HOT

FAC

WARMERS AND SUR

NOTE: The four nylon washers must be installed

under the heads of the four #6 screws to prevent

a possible shorting of the control board circuits.

6. Connect the 11-pin connector from the control

panel.

7. Connect the 10-pin connector and the 4-pin con-

nector from the main wiring harness.

8. Connectthebluewireandblackwiretotherelayon

the control board.

UTIO

P1846

FIG. 2 CONTROL BOARD

Location:

The Control Board is located inside the top cover

behind the front end cap.

9. Refer to CDBC , SINGLE CD Adjustments and

Optional Settings to program the new control

board.

Test Procedures:

The test procedures for the control board will vary

depending upon the problems experienced by the

brewer. Refer to the Troubleshooting guide beginning

on page 9. The troubleshooting guide is divided into

threesections,RefillCircuit,HeatingCircuit,andBrew-

ing Circuit.

35582 041503

Page 23

SERVICE (cont.)

SWITCH PANEL

Removal and Replacement:

1. Disconnect the 11-pin connector to the switch

panel from the control board.

2. Remove the four #6 screws, nylon washers and

the two #4-40 screws securing the control board

to the end cap assembly and set aside.

3. Gently pry the switch panel from the end cap

assembly.

4 Removeanyadhesivethatremainsontheendcap.

5. Removetheadhesivebackingfromthenewswitch

panel. Inserttheribbonconnectorthroughtheslot

intheendcapandapplytheswitchpaneltotheend

cap.

6. Install the control board to the back side of the end

cap using the four #6 screws, nylon washers and

the two #4-40 screws to the end cap assembly.

NOTE: The four nylon washers must be installed

under the heads of the four #6 screws to prevent

a possible shorting of the control board circuits.

7. Reconnect the 11-pin connector from the switch

panel to the control board making sure every pin

on the control board is inserted into the ribbon

cable plug.

P1848

FIG. 3 SWITCH PANEL

Location:

The Switch Panel is located in the front of the

hood.

Test Procedures:

The test procedures for the switch panel and the

control board will vary depending upon the problems

experienced by the brewer. Refer to the Troubleshoot-

ing guide beginning on page 11. The troubleshooting

guide is divided into three sections, Refill Circuit,

Heating Circuit, and Brewing Circuit.

35582 041503

Page 24

SERVICE (cont.)

DISPENSE VALVE

6. Connect the voltmeter lead ends to the dispense

valve coil terminals. Connect the brewer to the

power source. Brewer temperature lockout must

be disabled. Place "ON/OFF" Switch in the "ON"

position. Press and release the brew switch. The

indication must be 120 volts ac for two-wire 120

volt models and three-wire 120/208 volt models.

7. Disconnect the brewer from the power source.

If voltage is present as described, but no coil action is

observed, nor "clicking" heard, dispense valve is de-

fective. Replace valve and test again to verify repair.

If voltage is not present as described, refer to Wiring

Diagrams and check the brewer wiring harness. Also

check the control board for proper operation. See

Page 23.

WARMERS AND SURFACES ARE HOT

TIO

Removal and Replacement:

P1852

1. Disconnect wires from the dispense valve.

2. Drain enough water from the tank so the dispense

valve is above the water level.

3. Remove water lines from the dispense valve.

4. Remove the two #8-32 nuts securing the dispense

valve to the sprayhead panel.

FIG. 4 DISPENSE VALVE

Location:

The dispense valve is located inside the top cover

behind the front end cap.

5. Install a new dispense valve using the two #8-32

nuts.

6. Reconnect water lines to the dispense valve and

secure in place with clamps.

Test Procedures:

1. Disconnect the brewer from the power source.

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. If the

brewer has been set for brewer temperature lock-

out, this feature must be disabled. See Page 8 for

procedure.

4. Check the dispense 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 dispense valve for a "clicking" sound

as the coil magnet attracts and repels the plunger.

5. Disconnect the brewer from the power source.

7. Refer to FIG. 5 when reconnecting wires.

WHI/GRN from

Control Board

WHI from Terminal

Block

If the sound is heard as described, there may be a

blockage in the dispense valve or the water line to the

sprayhead. Removethedispensevalveandinspectfor

wear, and remove waterborne particles.

P1853

FIG. 5 DISPENSE VALVE WIRING

If the sound is not heard as described, proceed to #6.

35582 041503

Page 25

SERVICE (cont.)

LIMIT THERMOSTAT

Removal and Replacement:

1. Remove the black and blue wires from limit ther-

mostat 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 FIG. 7 when reconnecting the wires.

BLU from Control

Board

P1854

FIG. 6 LIMIT THERMOSTAT

BLK from Terminal

Block

P1800

Location:

FIG. 7 LIMIT THERMOSTAT WIRING

The limit thermostat is located inside the front

access panel on the front side of the tank.

Test Procedures:

1. Disconnect the brewer from the power source.

2. Disconnect the blue and black wires from the limit

thermostat.

3. Withanohmmeter,checkforcontinuityacrossthe

limit thermostat terminals.

If continuity is present as described, the limit thermo-

stat is operating properly.

If continuity is not present as described, replace the

limit thermostat.

35582 041503

Page 26

SERVICE (cont.)

TANK HEATER

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,

remove and inspect heater for cracks in the sheath.

Removal and Replacement:

1. Remove the top cover or top warmer housing and

front access panel as previously described.

2. Disconnect the vent hose from the top of the tank

by pulling the elbow fitting from the grommet in

the top of the tank lid.

3. Drain water from the tank.

4. Disconnect the water supply tube to the dispense

valve from the side of the tank.

5. Disconnect the water supply tube to the solenoid

valve from the bottom of the tank.

P1855

6. On brewers with faucet, disconnect the outlet

water line to the faucet from the side of the tank.

7. Disconnect the temperature probe from the top of

the tank by pulling the probe from the grommet in

the top of the tank lid.

FIG. 8 TANK HEATER

Location:

The tank heater is located inside the tank and

secured to the tank bottom.

8. Disconnect the pink wire from the level probe.

9. Disconnectthegreenwirefromthetopofthetank.

10. Disconnect the limit thermostat from the side of

the tank.

11. Disconnect the two white wires from the tank

warmer blanket.

12. Disconnecttheblackwireandthewhiteorredwire

from the tank heater terminals.

13. Remove the four #8-32 nuts securing the tank to

the mounting brackets and remove the tank as-

sembly.

Test Procedures:

1. Disconnect the brewer from the power supply.

2. With a voltmeter, check the voltage across the

white or red wire from the terminal block and the

black wire from the control board. Connect the

brewer to the power source. The indication must

be120voltsacfortwowire120voltmodelsor240

volts ac for three wire 120/240 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.

14. Remove the eight #8-32 nuts securing the tank lid

to the tank.

15. Remove the two hex nuts securing the tank heater

to the bottom of the tank. Remove tank heater with

gaskets and discard.

16. Install new tank heater with gaskets to the bottom

of the tank and secure with two hex nuts.

17. Install tank assembly onto mounting brackets and

secure in place with four #8-32 nuts.

4. Disconnecttheblackwireandthewhitewireorred

wire from the tank heater terminals.

5. Check for continuity across the tank heater termi-

nals.

35582 041503

Page 27

SERVICE (cont.)

TANK HEATER (Cont.)

18. Install tank lid and secure in place with eight #8-32

nuts.

19. Connect the two white wires of the tank warmer

blanket.

20. Connectthelimitthermostattothefrontofthetank

assembly.

21. Connect the green wire to the tank mounting

bracket using #8-32 nut.

22. Connect the pink wire to the level probe.

23. Insert the temperature probe through the grom-

met in the tank lid.

24. Install the elbow fitting of the vent hose into the

grommet in the tank lid.

BLK to Control Board

WHI or RED to Terminal

Block

25. On brewers with faucet, connect the outlet water

line of the faucet to the side of the tank and secure

with clamp.

P1856

FIG. 9 TANK HEATER WIRING

26. Connect the water supply tube from the solenoid

to the bottom of the tank and secure with clamp.

27. Connect the water supply tube from the dispense

valvetothesideofthetankandsecurewithclamp.

28. Refer to FIG. 9 when reconnecting the tank heater

wires.

29. Install access panels and covers and refer to Initial

Set-up for refill and operation.

35582 041503

Page 28

SERVICE (cont.)

REFILL VALVE

If continuity is not present as described, replace the

refill valve.

6. Check the refill valve for coil action. Connect the

brewer to the power source. With "ON/OFF" switch

in the "ON' upper position press start switch and

listen carefully in the vicinity of the refill 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 refill valve, there may be a blockage

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

valve may require inspection for wear, and removal of

waterborne particles.

ERS AND SURFACES ARE HOT

WARM

TIO

Ifthe soundis notheardas described, replacetherefill

valve.

P1857

FIG. 10 REFILL VALVE

Removal and Replacement:

1. Remove both wires from the refill valve.

2. Turn off the water supply to the brewer.

3. Disconnect the water lines to and from the refill

valve.

Location:

The refill valve is located inside the trunk on the

lower center part of the component bracket.

4. Remove the two 1/4"-20 screws securing the refill

valvemountingbracket tothecomponentbracket.

Remove bracket and valve as an assembly.

5. Using two 1/4"-20 screws install the new refill

valve and bracket to the component bracket.

6. Securely fasten the water lines to and from the

valve.

Test Procedures:

1. Disconnect the brewer from the power source.

2. Disconnect the white and white/blue wires from

the refill valve. Set the "ON/OFF" switch in the "ON"

upper position.

3. With a voltmeter, check the voltage across the coil

wires. Connect the brewer to the power source.

The indication must be 120 volts ac for two wire

120 volt models and three wire 120/240 volt

models.

7. Refer to FIG. 11 when reconnecting the wires.

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 Wiring

Diagrams and check brewer wiring harness.

WHI from Terminal

Block

5. Check for continuity across the refill valve coil

terminals.

WHI/BLU from

Control Board

P1858

If continuity is present as described, reconnect the

white and white/blue wires from the circuit board.

FIG. 11 REFILL VALVE WIRING

35582 041503

Page 29

SERVICE (cont.)

WARMER ELEMENT(S)

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

If voltage is not present as described, refer to Wiring

Diagrams and check brewer wiring harness.

5. Check the continuity across the two terminals on

the warmer element.

Ifcontinuityispresentasdescribed,reconnectthetwo

wires to the warmer element.

If continuity is not present as described, replace the

warmer element.

Removal and Replacement:

1. Remove the three #4-40 screws securing the

warmer assembly to the brewer.

2. Lift the warmer assembly from the brewer.

3. Disconnect the two wires from the warmer ele-

ment terminals.

P2675

4. Remove the two #8-32 nuts securing the warmer

element to the warmer plate.

5. Securely install new warmer element.

6. Reconnectthetwowirestowarmerelementtermi-

nals.

7. Securely install warmer assembly on the brewer.

8. Refer to the Wiring Diagrams when reconnecting

the wires.

FIG. 12 WARMER ELEMENTS

Location:

The warmerelement(s)islocatedunderthewarmer

plate.

Test Procedures:

1. Disconnect the brewer from the power source.

2. Use the white wire from the terminal block and the

other bottom wire on the "ON/OFF" switch.

3. With a voltmeter, check voltage across the two

wires with the "ON/OFF" switch in the "ON" posi-

tion. Connect the brewer to the power source.The

indication must be 120 volts ac for two wire 120

volt models and three wire 120/240 volt models.

4. Disconnect the brewer from the power source.

35582 041503

Page 30

SCHEMATIC WIRING DIAGRAM CDBC - 15, 20 & 35

GRN

LIMIT

THERMOSTAT

WHI-14 (MODELS 15 & 20)

RED-14 (MODEL 35)

TANK HEATER

BLU-14

BLK-14

"KEEP WARM" HEATER

WHI

BREW STATION WARMER

(CONTROLLED BY ON/OFF SW)

BLK

WHI/RED

WHI

COUNTER

(OPTIONAL)

REFILL

SOL

BLK

BLU-14

BLK-14

WHI/BLU

J1-1

J1-2

DISPENSE

SOL

WHI

WHI/GRN

COM

N.O.

WHI

BLK

J1-1

WARMER ASSY "A"

FRONT WARMER

BRN/BLK

VIO

BRN/BLK

WHI

WHI/BLU

WHI/RED

YEL

WHI/VIO

VIO

J1-5

P1, P2, &

P3 ARE

PINS OF A

POLARIZED

THREE-PIN

CONNECTOR.

(SEE TABLE BELOW FOR USAGE)

REAR WARMER

VIO

WHI/GRN

J1-10

J2-1

WARMER ASSY "B"

CONTROL PANEL ASSY

BREW SW

LT FRNT SW LT REAR SW

FRONT WARMER

YEL

WHI

(SEE TABLE BELOW FOR USAGE)

ON/OFF SW TOP FRNT SW TOP REAR SW

HIDDEN SW RT REAR SW RT FRNT SW

REAR WARMER

WHI/VIO

J2-6

WARMER WIRING REFERENCE

(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)

LEFT

–

"B"

–

"B"

–

TOP

"A"

–

"A"

RIGHT

–

"A"

–

(NOTE – ALL WARMERS ARE NOT

AVAILABLE ON ALL MODELS!)

STATIC

SHIELD

WITH TOP WARMERS

WITH LEFT WARMERS

WITH RIGHT WARMERS

WITH LEFT & RIGHT WARMERS

WITH LEFT & TOP WARMERS

WITH RIGHT & TOP WARMERS

J2-11

J3-1

PNK

GRN

WHI

BLK

LEVEL

PROBE

"B"

J3-4

J5-1

BLK

120V AC 2 WIRE

120/208V AC 3 WIRE

120/240V AC 3 WIRE

SINGLE PHASE

t°

35582 041503

Page 31

SCHEMATIC WIRING DIAGRAM CDBCP/CDBCPF - 15, 20 & 35

W/Flashing Lamp (Freshness)

GRN

LIMIT

THERMOSTAT

WHI-14 (MODELS 15 & 20)

RED-14 (MODEL 35)

TANK HEATER

BLU-14

BLK-14

"KEEP WARM" HEATER

WHI

BLK

BREW STATION WARMER

(CONTROLLED BY ON/OFF SW)

WHI/RED

WHI

REFILL

SOL

RED

BLK

BLU-14

BLK-14

WHI/BLU

TRM-1

TRM-2

DISPENSE

SOL

WHI/GRN

COM

N.O.

WHI

BLK

J1-1

WHI

BRN/BLK

WARMER ASSY "A"

WHI/BLU

WHI/RED

YEL

WHI/VIO

VIO

J1-5

FRONT WARMER

BRN/BLK

WHI

BRN/BLK

P1, P2, &

P3 ARE

PINS OF A

POLARIZED

THREE-PIN

CONNECTOR.

(SEE TABLE BELOW FOR USAGE)

WHI/GRN

J1-10

J2-1

CONTROL PANEL ASSY

REAR WARMER

VIO

BREW SW

LT FRNT SW LT REAR SW

WARMER ASSY "B"

FRONT WARMER

YEL

ON/OFF SW TOP FRNT SW TOP REAR SW

HIDDEN SW RT REAR SW RT FRNT SW

YEL

WHI

J2-6

(SEE TABLE BELOW FOR USAGE)

REAR WARMER

WHI/VIO

(NOTE – ALL WARMERS ARE NOT

AVAILABLE ON ALL MODELS!)

STATIC

SHIELD

J2-11

J3-1

WARMER WIRING REFERENCE

(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)

PNK

GRN

WHI

BLK

LEFT

–

"B"

–

"B"

–

TOP

"A"

–

"A"

RIGHT

–

"A"

–

LEVEL

PROBE

WITH TOP WARMERS

WITH LEFT WARMERS

WITH RIGHT WARMERS

WITH LEFT & RIGHT WARMERS

WITH LEFT & TOP WARMERS

WITH RIGHT & TOP WARMERS

J3-4

J5-1

BLK

t°

"B"

120V AC 2 WIRE

120/208V AC 3 WIRE

120/240V AC 3 WIRE

SINGLE PHASE

35582 041503

Page 32

SCHEMATIC WIRING DIAGRAM

SINGLE CD - 15, 20 & 35

GRN

LIMIT

THERMOSTAT

WHI-14 (MODELS 15 & 20)

RED-14 (MODEL 35)

TANK HEATER

BLU-14

BLK-14

"KEEP WARM" HEATER

WHI

BREW STATION WARMER

(CONTROLLED BY ON/OFF SW)

BLK

WHI/RED

WHI

COUNTER

(OPTIONAL)

REFILL

SOL

BLK

BLU-14

BLK-14

WHI/BLU

TRM1

TRM2

DISPENSE

SOL

WHI

WHI/GRN

COM

N.O.

WHI

BLK

J1-1

BRN/BLK

VIO

WHI

WHI/BLU

WHI/RED

YEL

WHI/VIO

VIO

J1-5

P1, P2, &

P3 ARE

PINS OF A

POLARIZED

THREE-PIN

CONNECTOR.

WHI/GRN

J1-10

J2-1

YEL

CONTROL PANEL ASSY

BREW SW

WHI

WHI/VIO

NO CONNECTION THIS APPLICATION

ON/OFF SW

HIDDEN SW

J2-6

1 GAL

1/2 GAL

(NOTE – ALL WARMERS ARE NOT

AVAILABLE ON ALL MODELS!)

STATIC

SHIELD

J2-11

J3-1

PNK

GRN

WHI

120V AC 2 WIRE

120/208V AC 3 WIRE

120/240V AC 3 WIRE

SINGLE PHASE

LEVEL

PROBE

BLK

J3-4

J5-1

BLK

t°

35582 041503

Page 33

SCHEMATIC WIRING DIAGRAM

CDBCP DB/CDBCFP DB

GRN

MAIN POWER

SWITCH

LIMIT

THERMOSTAT

TANK HEATER

BLU-14

RED-14

BLK-14

"KEEP WARM" HEATER

WHI/RED

WHI

BREW STATION WARMER

(CONTROLLED BY ON/OFF SW)

RED

BLK

WHI

COUNTER

(OPTIONAL)

REFILL

SOL

BLK

WHI/BLU

J1-1

J1-2

DISPENSE

SOL

WHI

BLU-14

BLK-14

WHI/GRN

COM

N.O.

RED

BLK

RED

J1-1

WARMER ASSY "A"

FRONT WARMER

BRN/BLK

WHI

WHI/BLU

WHI/RED

YEL

J1-5

P1, P2, &

P3 ARE

PINS OF A

(SEE TABLE BELOW FOR USAGE)

WHI/VIO

REAR WARMER

VIO

YEL

VIO

POLARIZED

THREE-PIN

CONNECTOR.

WHI/GRN

J1-10

J2-1

WARMER ASSY "B"

CONTROL PANEL ASSY

BREW SW

LT FRNT SW LT REAR SW

FRONT WARMER

YEL

WHI

(SEE TABLE BELOW FOR USAGE)

ON/OFF SW TOP FRNT SW TOP REAR SW

HIDDEN SW RT REAR SW RT FRNT SW

REAR WARMER

WHI/VIO

J2-6

WARMER WIRING REFERENCE

(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)

LEFT

–

"B"

–

"B"

–

TOP

"A"

–

"A"

RIGHT

–

"A"

–

(NOTE – ALL WARMERS ARE NOT

AVAILABLE ON ALL MODELS!)

STATIC

SHIELD

WITH TOP WARMERS

WITH LEFT WARMERS

WITH RIGHT WARMERS

WITH LEFT & RIGHT WARMERS

WITH LEFT & TOP WARMERS

WITH RIGHT & TOP WARMERS

J2-11

J3-1

PNK

GRN

WHI

BLK

LEVEL

PROBE

"B"

J3-4

J5-1

BLK

200V AC

2 WIRE

SINGLE PHASE

t°

35582 021604

Page 34

SCHEMATIC WIRING DIAGRAM

CDBCP DB/CDBCFP DB

GRN

MAIN POWER

SWITCH

LIMIT

THERMOSTAT

TANK HEATER

BLU-14

WHI-14

BLK-14

"KEEP WARM" HEATER

WHI/RED

WHI

BREW STATION WARMER

(CONTROLLED BY ON/OFF SW)

WHI

BLK

WHI

COUNTER

(OPTIONAL)

REFILL

SOL

BLK

WHI/BLU

J1-1

J1-2

DISPENSE

SOL

WHI

BLU-14

BLK-14

WHI/GRN

COM

N.O.

WHI

BLK

WHI

J1-1

WARMER ASSY "A"

FRONT WARMER

BRN/BLK

WHI

WHI/BLU

WHI/RED

YEL

J1-5

P1, P2, &

P3 ARE

PINS OF A

(SEE TABLE BELOW FOR USAGE)

WHI/VIO

REAR WARMER

VIO

YEL

VIO

POLARIZED

THREE-PIN

CONNECTOR.

WHI/GRN

J1-10

J2-1

WARMER ASSY "B"

CONTROL PANEL ASSY

BREW SW

LT FRNT SW LT REAR SW

FRONT WARMER

YEL

WHI

(SEE TABLE BELOW FOR USAGE)

ON/OFF SW TOP FRNT SW TOP REAR SW

HIDDEN SW RT REAR SW RT FRNT SW

REAR WARMER

WHI/VIO

J2-6

WARMER WIRING REFERENCE

(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)

LEFT

–

"B"

–

"B"

–

TOP

"A"

–

"A"

RIGHT

–

"A"

–

(NOTE – ALL WARMERS ARE NOT

AVAILABLE ON ALL MODELS!)

STATIC

SHIELD

WITH TOP WARMERS

WITH LEFT WARMERS

WITH RIGHT WARMERS

WITH LEFT & RIGHT WARMERS

WITH LEFT & TOP WARMERS

WITH RIGHT & TOP WARMERS

J2-11

J3-1

PNK

GRN

WHI

BLK

LEVEL

PROBE

"B"

J3-4

J5-1

BLK

100V AC

2 WIRE

SINGLE PHASE

t°

35582 021604

Page 35

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