Bunn Coffeemaker CDBCP 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is no longer current.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  
02/04 ©2003 Bunn-O-Matic Corporation  
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  
00986.0000E 5/98 ©1994 Bunn-O-Matic Corporation  
# 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  
PN: 00658.0000F 6/98 © 1985 BUNN-O-MATIC CORPORATION  
# 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  
1
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  
1
inlet fitting is 4" flare. Bunn-O-Matic does not recommend the use of a reverse-osmosis or deionized water supply  
to this equipment.  
1
3
NOTE - Bunn-O-Matic recommends 4" copper tubing for installations of less than 25 feet and 8" for more than  
1
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  
1
2
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  
3
4
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  
5
6
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 SU
N
:
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  
CA  
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 SURE HOT  
:
N
TIO  
U
A
C
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 SURFACOT  
WARM  
N
:
TIO  
AU  
C
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  
L1  
N
L2  
GRN  
LIMIT  
THERMOSTAT  
WHI-14 (MODELS 15 & 20)  
RED-14 (MODEL 35)  
TANK HEATER  
BLU-14  
BLK-14  
BLK-14  
"KEEP WARM" HEATER  
WHI  
WHI  
BREW STATION WARMER  
(CONTROLLED BY ON/OFF SW)  
BLK  
WHI/RED  
WHI  
WHI  
COUNTER  
(OPTIONAL)  
REFILL  
SOL  
BLK  
BLK  
BLU-14  
BLK-14  
WHI/BLU  
J1-1  
J1-2  
DISPENSE  
SOL  
C
O
N
T
WHI  
WHI  
WHI/GRN  
COM  
N.O.  
WHI  
BLK  
R
O
L
J1-1  
WARMER ASSY "A"  
P2  
P3  
FRONT WARMER  
P1  
BRN/BLK  
BRN/BLK  
VIO  
BRN/BLK  
WHI  
WHI  
P
C
WHI/BLU  
WHI/RED  
YEL  
WHI/VIO  
VIO  
J1-5  
W
H
I
P1, P2, &  
P3 ARE  
PINS OF A  
POLARIZED  
THREE-PIN  
CONNECTOR.  
(SEE TABLE BELOW FOR USAGE)  
B
O
A
R
D
REAR WARMER  
VIO  
WHI/GRN  
J1-10  
J2-1  
WARMER ASSY "B"  
CONTROL PANEL ASSY  
BREW SW  
LT FRNT SW LT REAR SW  
P2  
P1  
FRONT WARMER  
YEL  
YEL  
WHI  
WHI  
(SEE TABLE BELOW FOR USAGE)  
ON/OFF SW TOP FRNT SW TOP REAR SW  
HIDDEN SW RT REAR SW RT FRNT SW  
W
H
I
REAR WARMER  
WHI/VIO  
P3  
WHI/VIO  
J2-6  
WARMER WIRING REFERENCE  
(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)  
LEFT  
"B"  
"B"  
"B"  
TOP  
"A"  
"A"  
"A"  
RIGHT  
"A"  
"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  
L1  
N
L2  
W/Flashing Lamp (Freshness)  
GRN  
LIMIT  
THERMOSTAT  
WHI-14 (MODELS 15 & 20)  
RED-14 (MODEL 35)  
TANK HEATER  
BLU-14  
BLK-14  
BLK-14  
"KEEP WARM" HEATER  
WHI  
WHI  
BLK  
BREW STATION WARMER  
(CONTROLLED BY ON/OFF SW)  
WHI/RED  
WHI  
WHI  
WHI  
REFILL  
SOL  
RED  
BLK  
BLU-14  
BLK-14  
WHI/BLU  
TRM-1  
TRM-2  
DISPENSE  
SOL  
C
O
N
T
R
O
L
WHI/GRN  
COM  
N.O.  
WHI  
BLK  
J1-1  
WHI  
WHI  
BRN/BLK  
P
C
WARMER ASSY "A"  
WHI/BLU  
WHI/RED  
YEL  
WHI/VIO  
VIO  
J1-5  
P2  
P3  
FRONT WARMER  
P1  
BRN/BLK  
WHI  
BRN/BLK  
B
O
A
R
D
W
H
I
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  
VIO  
BREW SW  
LT FRNT SW LT REAR SW  
WARMER ASSY "B"  
P2  
P1  
FRONT WARMER  
YEL  
ON/OFF SW TOP FRNT SW TOP REAR SW  
HIDDEN SW RT REAR SW RT FRNT SW  
YEL  
WHI  
WHI  
J2-6  
(SEE TABLE BELOW FOR USAGE)  
W
H
I
REAR WARMER  
WHI/VIO  
P3  
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"  
"B"  
TOP  
"A"  
"A"  
"A"  
RIGHT  
"A"  
"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  
L1  
N
L2  
GRN  
LIMIT  
THERMOSTAT  
WHI-14 (MODELS 15 & 20)  
RED-14 (MODEL 35)  
TANK HEATER  
BLU-14  
BLK-14  
BLK-14  
"KEEP WARM" HEATER  
WHI  
WHI  
BREW STATION WARMER  
(CONTROLLED BY ON/OFF SW)  
BLK  
WHI/RED  
WHI  
WHI  
COUNTER  
(OPTIONAL)  
REFILL  
SOL  
BLK  
BLK  
BLU-14  
BLK-14  
WHI/BLU  
TRM1  
TRM2  
DISPENSE  
SOL  
C
O
N
T
WHI  
WHI  
WHI/GRN  
COM  
N.O.  
WHI  
BLK  
R
O
L
J1-1  
P2  
P1  
BRN/BLK  
BRN/BLK  
VIO  
WHI  
P
C
WHI/BLU  
WHI/RED  
YEL  
WHI/VIO  
VIO  
J1-5  
P3  
P1, P2, &  
P3 ARE  
PINS OF A  
POLARIZED  
THREE-PIN  
CONNECTOR.  
B
O
A
R
D
WHI/GRN  
P2  
P3  
J1-10  
J2-1  
YEL  
CONTROL PANEL ASSY  
BREW SW  
P1  
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  
L1  
L2  
CDBCP DB/CDBCFP DB  
GRN  
MAIN POWER  
SWITCH  
LIMIT  
THERMOSTAT  
TANK HEATER  
BLU-14  
RED-14  
BLK-14  
BLK-14  
"KEEP WARM" HEATER  
WHI/RED  
WHI  
WHI  
BREW STATION WARMER  
(CONTROLLED BY ON/OFF SW)  
RED  
RED  
BLK  
WHI  
COUNTER  
(OPTIONAL)  
REFILL  
SOL  
BLK  
BLK  
WHI/BLU  
J1-1  
J1-2  
DISPENSE  
SOL  
C
O
N
T
R
O
L
WHI  
WHI  
BLU-14  
BLK-14  
WHI/GRN  
P2  
COM  
N.O.  
RED  
BLK  
RED  
J1-1  
WARMER ASSY "A"  
FRONT WARMER  
P1  
BRN/BLK  
BRN/BLK  
BRN/BLK  
WHI  
WHI  
P
C
WHI/BLU  
WHI/RED  
YEL  
J1-5  
W
H
I
P1, P2, &  
P3 ARE  
PINS OF A  
(SEE TABLE BELOW FOR USAGE)  
WHI/VIO  
B
O
A
R
D
P3  
REAR WARMER  
VIO  
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  
P2  
P1  
FRONT WARMER  
YEL  
WHI  
WHI  
(SEE TABLE BELOW FOR USAGE)  
ON/OFF SW TOP FRNT SW TOP REAR SW  
HIDDEN SW RT REAR SW RT FRNT SW  
W
H
I
REAR WARMER  
WHI/VIO  
P3  
WHI/VIO  
J2-6  
WARMER WIRING REFERENCE  
(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)  
LEFT  
"B"  
"B"  
"B"  
TOP  
"A"  
"A"  
"A"  
RIGHT  
"A"  
"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  
L1  
L2  
CDBCP DB/CDBCFP DB  
GRN  
MAIN POWER  
SWITCH  
LIMIT  
THERMOSTAT  
TANK HEATER  
BLU-14  
WHI-14  
BLK-14  
BLK-14  
"KEEP WARM" HEATER  
WHI/RED  
WHI  
WHI  
BREW STATION WARMER  
(CONTROLLED BY ON/OFF SW)  
WHI  
WHI  
BLK  
WHI  
COUNTER  
(OPTIONAL)  
REFILL  
SOL  
BLK  
BLK  
WHI/BLU  
J1-1  
J1-2  
DISPENSE  
SOL  
C
O
N
T
R
O
L
WHI  
WHI  
BLU-14  
BLK-14  
WHI/GRN  
P2  
COM  
N.O.  
WHI  
BLK  
WHI  
J1-1  
WARMER ASSY "A"  
FRONT WARMER  
P1  
BRN/BLK  
BRN/BLK  
BRN/BLK  
WHI  
WHI  
P
C
WHI/BLU  
WHI/RED  
YEL  
J1-5  
W
H
I
P1, P2, &  
P3 ARE  
PINS OF A  
(SEE TABLE BELOW FOR USAGE)  
WHI/VIO  
B
O
A
R
D
P3  
REAR WARMER  
VIO  
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  
P2  
P1  
FRONT WARMER  
YEL  
WHI  
WHI  
(SEE TABLE BELOW FOR USAGE)  
ON/OFF SW TOP FRNT SW TOP REAR SW  
HIDDEN SW RT REAR SW RT FRNT SW  
W
H
I
REAR WARMER  
WHI/VIO  
P3  
WHI/VIO  
J2-6  
WARMER WIRING REFERENCE  
(ALL CONFIGURATIONS INCLUDE BREW STATION WARMER)  
LEFT  
"B"  
"B"  
"B"  
TOP  
"A"  
"A"  
"A"  
RIGHT  
"A"  
"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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