Bunn CDBCF APS User Manual

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CDBC, CDBCF CDBC APS, CDBCF APS CDBC TC, CDBCF TC

(Dual Voltage Models Starting at Serial #CDBC024477)

DISCONTINUED VERSION

The information in this manual

is no longer current.

OPERATING & SERVICE MANUAL

BUNN-O-MATICCORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: (217) 529-6601

FAX: (217) 529-6644

29707.0001B 02/04 ©2003 Bunn-O-MaticCorporation

www.bunnomatic.com

INTRODUCTION

This equipment will brew a half-gallonbatch of coffee into an awaiting dispenser. It can be easily configured for 120V 15 amp, 120/208V 20 amp or 120/240V 20 amp. The brewer may have a hot water faucet for allied beverage use. It is only for indoor use on a sturdy counter or shelf.

CONTENTS

Introduction & Warranty ....................................................................................

2

User Notices ......................................................................................................

3

Electrical Requirements .....................................................................................

5

Plumbing Requirements, Initial Set-Up& Coffee Brewing .................................

6

Cleaning & Operating Controls ..........................................................................

7

Adjustments & Optional Settings .......................................................................

8

Pulse Brew Setup Procedure .............................................................................

9

Water Sensing Threshold Adjustment Procedure ..............................................

9

Troubleshooting ...............................................................................................

10

Diagnostics ......................................................................................................

20

Service.............................................................................................................

21

Wiring Diagrams ..............................................................................................

31

BUNN-O-MATICCOMMERCIAL PRODUCT WARRANTY

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

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

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

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

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

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601or by writing to Post Office Box 3227, Springfield, Illinois62708-3227;2) if requested by BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under warranty.

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

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

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.

In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

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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.

#00658.0000

#00831.0000

! CAUTION

When re-wiringthe machine for operation on 120/208V or 120/240V, the replacement Power Supply Cord must be UL Listed Flexible Cord Type SO, SJO, SJTO, HSJO or SJOW, No. 12 AWG, 4 Conductor, Rated 90° C. Attachment Plug Cap must be UL Listed, NEMA14-20PorL14-20PConfiguration, Rated 125/250V, 20 AMPS. The Power Supply Cord must be at least 3 feet long and maximum 6 feet long (measured from Strain Relief to end of the Attachment Plug Cap.)

#34072.0000

Optional Field Wiring

120 V, 15.0 A, 1800 W 1PH, 2-Wire,60HZ

#29710.0005 (3 Warmers)

CDBC(F)-DVBREWERS

Optional Field Wiring

120 V, 12.5 A, 1500 W 1PH, 2-Wire,60HZ

#29710.0006 (No Warmer)

CDBC(F) APS-DVBREWERS

Optional Field Wiring

120/208-240V,15.6-17.5A,2980-3850W 1PH,3-Wire,60HZ

#29710.0007 (3 Warmers)

CDBC(F)-DVBREWERS

Optional Field Wiring

120/208-240V,13.0-15.0A,2680-3550W 1PH,3-Wire,60HZ

#29710.0008 CDBC(F) APS-DV&TC-DV

BREWERS

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USER NOTICES (CONT.)

#02765.0000

#12364.0000

#00656.0000

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Models CDBC-DV,CDBC-APSDV & CDBCFTC-DV

ELECTRICAL REQUIREMENTS

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

Requirements for brewers without an attached cord set are as follows:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120V VERSION

 

120/208-240VVERSION

Requires 2-wire,grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz.

Requires 3-wire,grounded service rated120/208-240volts ac, 20 amp, single phase, 60 Hz.

ELECTRICAL HOOK-UP

CAUTION Improper electrical installation will damage electronic components.

1.An electrician must provide electrical service.

2.Determine the available on-siteelectrical service.

3.Select the desired unit voltage based on the available on-siteelectrical service.

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

5.Remove the front access panel beneath the sprayhead to gain access to the terminal block.

6.Feed the supply leads through the rear of the brewer.

7.Using the above diagrams, connect the desired electrical service to the field wiring terminal block.

8.If wiring the machine for operation on 120/208 or 120/240 volts with a Power Supply Cord, the Power Supply

Cord must be UL Listed Flexible Cord Type SO, SJO, SJTO, HSJO or SJOW, No. 12 AWG, 4 Conductor, Rated 90° C. Attachment Plug Cap must be UL Listed, NEMA14-20PorL14-20PConfiguration, Rated 125/250V, 20 AMPS. The Power Supply Cord must be at least 3 feet long and maximum 6 feet long (measured from Strain Relief to end of the Attachment Plug Cap).

9.Before proceeding, verify the voltage at the field wiring terminal block.

10.Set toggle switch on component bracket to the appropriate position and replace the access panel.

11.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.

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PLUMBING REQUIREMENTS

These brewers must be connected to a cold water system with operating pressure between 20 and 90 psi (138 and 620 kPa) from a 12" or larger supply line. Ashut-offvalve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is14" flare.

NOTE - Bunn-O-Maticrecommends14" copper tubing for installations of less than 25 feet and38" for more than 25 feet from the12" water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the counter top.Bunn-O-Maticdoes not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water flow.

This equipment must be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA)

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

1.Flush the water line and securely attach it to the inlet fitting at the left rear of the brewer.

2.Turn on the water supply.

INITIAL SET-UP

1.Insert an empty funnel into the funnel rails.

2.Place a decanter with a small amount of water under the funnel.

3.Connect the brewer to the power source.

4.Press 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.FAUCET MODELS:

On faucet models, place a decanter beneath the faucet and open the faucet handle. Release it when you hear the tank refilling. Empty and place back onto warmer under the funnel.

NON-FAUCETMODELS

On non-faucetmodels, initiate a brew cycle and allow it to run approximately 20 seconds. Turn the ON/OFF switch to the "OFF" position. Allow the water to drain and empty the decanter.

8.With the "ON/OFF" switch in the "ON" position (indicator glowing), momentarily press and release the "BREW" switch.

9.Allow the cycle to finish and measure the amount of water in the decanter. 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 the fresh coffee 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 beneath the funnel.

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

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

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CLEANING

1.The use of a damp cloth rinsed in any mild, nonabrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Maticequipment.

2.Check and clean the sprayhead. The sprayhead holes must always remain open.

OPERATING CONTROLS

P1626

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 de-energizesthe brew station warmer. Stopping a brew cycle after it has been started 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 when the "ON/OFF" switch is in the "OFF" position because the tank will not refill.

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.

ADDITIONAL WARMER SWITCHES

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.

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ADJUSTMENTS & OPTIONAL SETTINGS

HIDDEN

SWITCH

P1866

Setting Brew Temperature

The brewer is factory set to brew at 200°F (95°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

The brewer is factory set with the brew lockout disabled. Brew lockout prevents starting a brew cycle if the ready 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-offde-energizesall warmers after a predetermined time period after the most recent brew cycle. To change the setting, press and hold the "BREW" switch and the "HIDDEN" switch beneath the "®" for five seconds, the entire bank of temperature indicators will flashon-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 to five indicators are glowing, it indicates the approximate number of hours of delay before all warmers will be automaticallyde-energizedafter the most recent brew cycle.

IMPORTANT: The tank must be full and fill solenoid shut off prior to making these adjustments. The sprayhead must be installed when making adjustments.

Adjusting Brew Volumes

The brewer is factory set to deliver 64 ounces ± 2 for each brew cycle.

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 or graduated vessel beneath the funnel.

2.Press the "ON/OFF" switch (Indicator glowing).

3.Press and hold the brew start button until you hear the brew solenoid click on-and-offthree 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 or graduated vessel beneath the funnel. Press the "ON/OFF" switch. Press and hold the "BREW" switch

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ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)

until you hear the solenoid click on-and-offthree 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 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 clickon-and-offthree times (approximately 5 seconds), then release the "BREW" switch and allow the cycle to finish.

PULSE BREW SETUP PROCEEDURE

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

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.Press and hold the OFF/ON button. The brew valve will turn on after 10 seconds. Release the button. This begins 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 theoff time.

5.The spray is now on again and the remaining on time setting has begun. Press the OFF/ON button momentarily at the end of the desiredremaining on time.

6.The setup is now complete and the parameters are stored in memory. The spray will continue the off and on cycles until the brew volume of step 1 is complete. Pressing the OFF/ON button again will terminate the brewing 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.

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.

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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-MaticTechnical Service Department.

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

All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.

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

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

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

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

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

WARNING – • Exercise extreme caution when servicing electrical equipment.

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

Follow recommended service procedures.

Replace all protective shields or safety notices.

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.Make sure there is a nylon insulating washer under each screw head that holds the control board to the plastic 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.

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