Opis Kafeap

7/31/2019 Opis Kafeap

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SERVICE & REPAIR MANUALBUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227

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

39132.0000E 05/12 2008 Bunn-O-Matic Corporation


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39132 030912

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTYBunn-O-Matic Corp. (BUNN) warrants equipment manufactured by it as follows:1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermservers and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor.2) All other equipment - 2 years parts and 1 year labor plus added warranties as specied below:

a) Electronic circuit and/or control boards - parts and labor for 3 years.b) Compressors on refrigeration equipment - 5 years parts and 1 year labor.c) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analys- parts and labor for 4 years or 40,000 pounds of coffee, whichever comes rst.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured bit will be commercially free of defects in material and workmanship existing at the time of manufacture and apearing within the applicable warranty period. This warranty does not apply to any equipment, component part that was not manufactured by BUNN or that, in BUNNs judgment, has been affected by misuse, neglealteration, improper installation or operation, improper maintenance or repair, non periodic cleaning and descaling, equipment failures related to poor water quality, damage or casualty. In addition, the warranty does noapply to replacement of items subject to normal use including but not limited to user replaceable parts such asseals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to made under this warranty by telephone at (217) 529-6601 or by writing to Post Ofce Box 3227, SpringelIllinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an authorized BUservice location; and 3) receiving prior authorization from BUNN that the defective equipment is under warranTHE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.The agents, dealers or employees of BUNare not authorized to make modications to this warranty or to make additional warranties that are binding oBUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties anshould not be relied upon.If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement partand/or labor (during the applicable parts and labor warranty periods specied above) to repair the defectivcomponents, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replathe equipment or refund the purchase price for the equipment.THE BUYERS REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIBUNNS 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 prots, losales, loss of use of equipment, claims of Buyers customers, cost of capital, cost of down time, cost of substi-tute equipment, facilities or services, or any other special, incidental or consequential damages.

392, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARDEspress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized rBUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, CooDBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, GouJuice, High Intensity, iMIX, Infusion Series, Intellisteam, My Caf, Phase Brew, PowerLogic, Quality BeverEquipment Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, SafetFresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft HeSplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, Velocity BA Partner You Can Count On, Air Brew, Air Infusion, Beverage Bar Creator, Beverage Prot Calculator, Bbetter, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brewer ConNothing Brews Like a BUNN, Pouring Prots, Signature Series, Tea At Its Best, The Horizontal Red Line, Uare either trademarks or registered trademarks of Bunn-O-Matic Corporation.


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INTRODUCTIONThis equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It can be easily congured 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

Troubleshooting ..................................................................................................4Diagnostics .........................................................................................................9Technician Programming Reminders ................................................................10Access ..............................................................................................................11Control Board ....................................................................................................12Face Plate ..........................................................................................................13Membrane Switch .............................................................................................13Brew Valve ........................................................................................................14Optional Brew Valve ..........................................................................................15Level Probes .....................................................................................................16Early Rell Valve ...............................................................................................17Later Rell Valve ...............................................................................................18Tank Heaters .....................................................................................................20Limit Thermostat...............................................................................................21Thermal Cut Off .................................................................................................21Blanket Warmer ................................................................................................22Temperature Probe............................................................................................23Warmer Elements..............................................................................................24Voltage Selector Switch ....................................................................................25Power Switch ....................................................................................................26Programming Level 3........................................................................................27Programming Level 4........................................................................................29Wiring Diagrams .............................................................................................. 30Schematics .......................................................................................................34


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TROUBLESHOOTINGA troubleshooting guide is provided to suggest probable causes and remedies for the most likely problem

encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-MatiTechnical Service Department.

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

All electronic components have ac line voltage and some have low voltage dc potential on their terminaShorting 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.

an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at terminal or crimp.

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

The use of two wrenches is recommended whenever plumbing ttings are tightened or loosened. This whelp 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 specied. Follow recommended service procedures. Replace all protective shields or safety notices.

Before assuming a faulty control board, 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 theplastic 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 (if equipped) or observe if any indicator lights are glowing on the control paneIf so, proceed with testing. If not, check for voltage across pins 1 & 2 of the ten pin J1 connector (black anwhite wires). If voltage is present, replace the control board. If voltage is not present, check wiring and voltagacross terminal block (black and white on 120 & 120/240 models, or black and red on A models). Correct thproblem and retest before proceeding with testing.

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Will not rell

Rell does not shut offPower "ON"

Rell does not shut offPower "OFF"

PROBABLE CAUSE REMEDYPROBLEM

1. Power off to brewer

2. Water shut off

3. Error Message

4.ON/OFF Switch(If equipped)

5. Lime build up on Probe(s)

6. Rell Valve or Control Board

1. Lime build up on probe

2. Water Level Sensing System

3. Rell valve or control board

1. Rell valve

Press OFF/ON switch on contropanel to determine if power is ON

Make sure water is ON.

Brewer has shut down due to malfunction (See Diagnostic Section ithis manual).

Make sure ON/OFF Switch is "Oand indicator is lit.

Remove the Level Probe(s) andcheck for lime deposit on tip. Cleaand reinstall.

Refer to page 19

Remove Level Probe and checfor lime deposits on tip. Clean andreinstall.

Replace control board

Check valve. Page 19

Clean or replace valve as neededPage 19

TROUBLESHOOTING (cont.)

REFILL CIRCUIT

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HEATING CIRCUIT

1. Display's error message

2. Water not touching main (short)level probe

3. Water Level Probe SensingSystem

4. Temperature Probe

5. Limit Thermostat or TCO

6. Tank Heater

1. Lime build up on temperatureprobe, tank or tank heater

2. Temperature Probe

3. Control Board

1. Plumbing lines

2. Water supply

3. Lime build up

Brewer has shut down due to malfunction. See Diagnostics.

Remove level probe and grommetLook into hole on tank lid. Watemust be within approximately oninch from top of tank.

Check rell circuit. Heaters will nturn on if water is not groundinglevel probe.

Check/replace

Check/replace

Check/replace

Inspect probe and tank assemblyfor excessive lime deposits. Delimas required.

Check/replace

Check/replace

Plumbing lines should not rest onthe counter top.

The brewer must be connected toa cold water supply.

Remove the tank lid and clean inside of tank with a deliming agentif necessary.

Water does not heat to propertemperature

IMPORTANT:Make sure no tem-perature tests are taken beforethe display reads ready. Tank tem-perature must be stabilized beforereadings are taken.

Spitting or excessive steaming(cont.)

Brewer is making unusual noises


PROBABLE CAUSE REMEDYPROBLEM

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PROBLEM PROBABLE CAUSE REMEDY

BREWING CIRCUIT

Brew cycle will not start

Consistently low beverage level inthe dispenser or beverage overowsdispenser

Brew cycle starts, then aborts andreturns to Main screen after 20seconds (SB 153)

1. Display's error message

2. No water

3. No power or incorrect voltage tothe brewer

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

5. Low water temperature (Brewlockout is enabled)

6. Water not touching rell probeinside tank

7. Membrane Switch

8. Dispense valve

9. Control board

1. Brew volumeNOTE: Volume adjustments must bemade with sprayhead installed.

2. Lime build up

3. Dispense Valve

1. Level probes shorted

2. On pour over models, the opera-tor poured in water and pressed thestart button

Brewer has shut down due to malfunction. See Diagnostics.

Water lines and valves to the brewe

must be open.Check for voltage across the terminals at the terminal block.

The indicator lamp must be lit

Allow brewer to heat until ready, odisable the brew lockout feature.

Water must be in contact with rel

probe before brew cycle will startCheck/replace

Check/replace

Check/replace

Inspect the dispense valve andsprayhead for excessive lime deposits. Delime as required.

Remove dispense valve and cleaany obstructions. Rebuild or replacevalve if necessary. (See page 24)

Check/replace

Delime as required.

Ensure mylar shield(s) are installedon top cover

Instruct operator to use one proce-dure but not both

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PROBLEM PROBABLE CAUSE REMEDYBREWING CIRCUIT (cont.)

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Dripping from sprayhead

Weak beverage

Dry coffee grounds remain inthe funnel

Low beverage serving tem-perature

1. Lime build up

2. Dispense valve

1. Sprayhead

2. Water temperature

3. Filter type

4. Coffee grind

5. Funnel loading

1. Sprayhead

2. Funnel loading

1. Warmer

2. Thermal server/AirPot notpreheated before brew cycle

Inspect the tank assembly forexcessive lime deposits. Delimeas required.

Check/replace

A clean sprayhead must be usedfor proper extraction.

Place an empty brew funnelon an empty decanter beneaththe sprayhead. Initiate brewcycle and check the water tem-perature immediately below the

sprayhead with a thermometer.The reading must not be lessthan 195F (91C). Adjust thetemperature setting to increasethe water temperature. Refer toInitial Set-up instructions.

BUNN paper lters must beused for proper extraction.

A ne drip or grind must be usedfor proper extraction.

The BUNN paper lter mustbe centered in the funnel andthe bed of grounds leveled byshaking gently.

Make sure sprayhead is pres-ent and holes are clear andunobstructed.

The BUNN paper lter mustbe centered in the funnel andthe bed of grounds leveled byshaking gently.

Check/replace

Preheat server


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AXIOM

VERSION ##.##

REVERSE FORWARD

TECHNICIAN PROGRAMMING REMINDERS

ACCESSING PROGRAM MODESPress and hold the right hidden switch. The longer you press it, the higher the level you can access. EXAMPLPressing for a couple seconds enters Level 1. Continuing to press for approximately 5 seconds will access Lev

2. Continue pressing for approximately 15 seconds to access Level 3. During program modes, use the right hidden switch to advance forward through screens. Use left hidden switch to step backwards through screens.

VIEWING ASSET AND SERIAL NUMBERSPress left hidden switch to view Asset number. Press and release to view serial number. Press and release againto view the installed software version.

FACTORY BLOWOUT MODEWhen in the main screen, DO NOT press both left and right hidden switches at the same time. The display wread "FACTORY BLOWOUT" "ON/OFF".WARNING: NEVER activate this mode. It will open the brew and relvalves simultaneously. THIS IS FOR FACTORY USE ONLY! If you accidentally enter this screen, exit out of itby pressing the "ENABLE BREW ON/OFF" switch.

REVERSE FORWARD

VIEW ASSET/SERIAL # ENTER PROGRAMMING

PROGRAMMING LOCKOUT SWITCH (Mounted on main control board)

This switch can be set to prevent accessto Level 2. Turn "OFF" the switch to acceTechnician (Level 2). Once all the correct bresettings are programmed, the Technician canset the switch to the "ON" position to prohibanyone from changing the settings. With theswitch in the "ON" position, only Level 1 cbe accessed by store personnel. Technicianscan access Level 1 with the switch in eitheposition. To enter Levels 2, 3, & 4, press andhold right hidden switch.

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COMPONENT ACCESS

This section provides procedures for testing andreplacing various major components used in thisbrewer should service become necessary. Refer toTroubleshooting for assistance in determining thecause of any problem.

WARNING - Inspection, testing, and repair of electri-cal equipment should be performed only by qualiedservice personnel. The brewer should be unpluggedwhen servicing, except when electrical tests are re-quired and the test procedure specically states toplug in the brewer.

WARNING -Disconnect the brewer from the powersource before the removal of any panel or the replace-ment of any component.

All components are accessible by the removal ofthe top cover or warmer housing, front access paneland warmer plate(s).

Refer to wiring diagrams at the back of this manualwhen reconnecting wires.

FIG. 11-1 COMPONENT ACCESS

FIG. 11-2 COMPONENT ACCESS

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Location: The Control Board is located inside the top coverbehind the front face plate.

Test Procedures: The test procedures for the control board will varydepending upon the problems experienced by thebrewer. Refer to the Troubleshooting section whichis divided into three sections, Rell Circuit, HeatingCircuit, and Brewing Circuit.

Check for Power to board:1. Insert one meter lead in J1-pin 1 and the otherlead in J1-pin 2.2. With the power connected to brewer, the voltagereading to the board should be the line voltage ratedfor that model.If no voltage is present, check wiring to the board.If voltage is present, and brewer does not poweron, replace board.

Removal and Replacement:1. Disconnect brewer from power source.2. Disconnect the wires from the relay on the controlboard.3. Disconnect the 10-pin connector (main harness)and the 3-pin connector (level probe harness) fromthe control board.4. Disconnect the 10-pin connector (ribbon cable)from the control board.

FIG. 12-1 CONTROL BOARD

5. Remove the two screws and two nylon washersecuring the control board to the front face plate.6. Tilt the control board inward to clear the displasection.7. Place the bottom edge of the new control boardin the two cradles, tilt the board forward, and securewith the two screws and nylon washers to the fronface plate.NOTE: The nylon washers must be installed underthe heads of the two screws to prevent a possibleshorting of the control board circuits.8. Re-install wires & connectors.

BEFORE REPLACEMENT:If a triac or MOV is visibly burned, it was most likecaused by an external sources such as a shorted wireor damaged solenoid coil. Use the triac map below ttrace the circuit in question, and repair/replace the

component before replacing control board.

FIG. 12-2 TRIACS

CONTROL BOARD

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Triac Map:TH1 WarmerTH2/MOV-1 Brew solenoidTH3 WarmersTH4/MOV-2 Rell solenoidTH5 Main warmer

@ J1-7@ J1-10@ J1-4&8@ J1-5@ J1-6

TH5

TH4

TH3

TH2

TH1

M O V 2

M O V 1


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Faceplate Removal and Replacement:1. Disconnect brewer from power source.2. Disconnect the wires from the relay on the controlboard.3. Disconnect the 10-pin connector (main harness)and the 3-pin connector (level probe harness) from

the control board.4. Disconnect the 10-pin connector (ribbon cable)from the control board.5. Drain tank and disconnect/remove faucet.6. Remove the 3 nuts and 1 standoff from back sideof faceplate assembly.7. Remove faceplate and control board as an assemblyout the front opening.

FACEPLATE REMOVAL

FIG. 13-1 FACEPLATE REMOVAL

8. Remove the two screws and two nylon washersecuring the control board to the front face plate.9. Place the bottom edge of the new control board inthe two cradles and secure with the two screws andnylon washers to the front face plate.NOTE: The nylon washers must be installed underthe heads of the two screws to prevent a possibleshorting of the control board circuits.10. Re-install faucet assembly (if equipped).11. Re-install faceplate/board assembly.12. Re-install wires & connectors.

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Location:The Membrane Switch is located on the front faceplate.

Test Procedures:

There are two methods for testing the membraneswitch. The easiest method is to use the built in testmode. Refer to the Programing Section for ServiceTools/Test Switches. If for some reason you can't getinto the program modes, or brewer won't power up,

FIG. 14-1 MEMBRANE SWITCH

you can test it with an ohmmeter or continuity testerRefer to the schematic to trace the appropriate pins.

NOTE: Pin 1 is the static shield & will not provide areading to the other pins. There are two commonsin this circuit, pins 9 & 10.Disconnect brewer from power source before discon-necting ribbon cable from control board.

Removal and Replacement:1. Disconnect the ribbon cable from 10-pin connectoon the control board.2. Gently peel the membrane switch from the fronface plate assembly.4 Remove any adhesive that remains on the fronface plate.5. Remove the adhesive backing from the new membrane switch. Insert the ribbon cable through the slot

in the front face plate and apply the membrane switchto the front face plate.6. Connect the ribbon cable to the 10-pin connector othe control board making sure every pin on the controboard is inserted into the ribbon cable connector.

H e l p f u l H i n t

FIG. 14-2 MEMBRANE SWITCH CONTINUITY

MEMBRANE SWITCH

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Wrap a thin paper clip around each meter leadand extend past the tip by " - ". You may

need to sand off the clear coating on some clips!


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Location:The brew valve is located inside the top cover behindthe front face plate.

Test Procedures:1. Refer to the Programing Section for Service Tools/ Test Outputs/Brew Valve.2. Be sure brew funnel & server are in place before

activating valve.3. Check the valve for coil action. Turn on the valvewith the test mode. Listen carefully in the vicinity ofthe brew valve for a click as the coil pulls the plungerin.If no sound is heard as described, proceed to #4.If the sound is heard as described, there may be a blockage in the valve , hose, tank, or sprayhead. Dis- connect the brewer from the power source. Remove the valve and inspect for blockage, and de-lime all related areas.

4. Connect the voltmeter leads to the coil terminals.Turn on the valve with the test mode.NOTE: Due to the internally rectied coil, the indi-cation will be 120VAC all the time. Set the meterto DC volts. The indication should be 170VDC whenactivated. If the polarity of meter leads are reversed,reading will indicate -170VDC.(Double these readings for 240 volt coils)

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

observed, brew valve is defective. Replace valve antest again to verify repair.If voltage is not present as described, refer to Wiring Diagrams and check the brewer wiring harnessAlso check the control board and switch for propeoperation.

Removal and Replacement:1. Disconnect the brewer from the power source.2. Disconnect wires from the valve.3. Drain enough water from the tank so the watelevel is below the outlet.4. Remove hoses from the valve.5. Remove the two #8-32 nuts securing the valve tthe sprayhead panel.6. Install new valve using the two #8-32 nuts.7. Reconnect hoses to the valve and secure in placewith clamps.

FIG. 15-2 BREW VALVE

FIG. 15-1 BREW VALVE

BREW VALVE

Due to the internally rectied coil, do not attempt totest this type of coil with an ohmmeter. The readingwill be open or very high resistance, dependingon the polarity of your meter leads.

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Location:The brew valve is located inside the top cover behindthe front face plate.

Test Procedures:1. Refer to the Programing Section for Service Tools/ Test Outputs/Brew Valve.2. Be sure brew funnel & server are in place before

activating valve.3. Check the valve for coil action. Turn on the valvewith the test mode. Listen carefully in the vicinity ofthe brew valve for a click as the coil pulls the plungerin.If no sound is heard as described, proceed to #4.If the sound is heard as described, there may be a blockage in the valve , hose, tank, or sprayhead. Dis- connect the brewer from the power source. Remove the valve and inspect for blockage, and de-lime all related areas.

4. Connect the voltmeter leads to the coil terminals.Turn on the valve with the test mode.NOTE: Due to the internally rectied coil, the indi-cation will be 120VAC all the time. Set the meterto DC volts. The indication should be 170VDC whenactivated. If the polarity of meter leads are reversed,reading will indicate -170VDC.(Double these readings for 240 volt coils)

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

observed, brew valve is defective. Replace valve antest again to verify repair.If voltage is not present as described, refer to Wiring Diagrams and check the brewer wiring harnessAlso check the control board and switch for propeoperation.

Removal and Replacement:1. Disconnect the brewer from the power source.2. Disconnect wires from the valve.3. Drain enough water from the tank so the watelevel is below the outlet.4. Remove sprayhead and hose from the valve.5. Remove the nut securing the valve to the sprayheadpanel.6. Install new valve using the nut from step 5.7. Reinstall sprayhead and hose to the valve ansecure in place with clamps.

FIG. 16-2 OPTIONAL BREW VALVE

FIG. 16-1 OPTIONAL BREW VALVE

Due to the internally rectied coil, do not attempt totest this type of coil with an ohmmeter. The readingwill be open or very high resistance, depending onthe polarity of your meter leads.

OPTIONAL BREW VALVE (ON SELECT MODELS)

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FIG. 17-2 LEVEL PROBES

LEVEL PROBE SYSTEM

Location:The level probes are located inside the tank lid.

Operation:The level probes sense the water level in the tank

by the conductive minerals in the water groundingout the very low AC voltage applied to the probes. Thecircuit monitors the time it takes the water to dropthe distance from the short probe to the long probe.Proper "initial set up", and keeping mineral build upoff the probes/grommets, is required for this systemto operate properly. A brew abort feature is "built in".In the event that the drop in water level from the shortprobe to the long probe takes too long, the brew cyclewill abort and return to the main screen. This couldbe caused by: Mineral build up on probes/grommets(very hard water); probes shorting to top cover (verifythe mylar shield(s) are installed; plugged outlet (ie:sprayhead limed up); incorrect operator use with thepour over model (ie: pour in water and pressing "start"button)

Test Procedures:1. Enter programming level 2, scroll to "Rell".NOTE: This screen only reads the long probe (blue wire) andis used for setting the rell conductance threshold.Alternate: Scroll to "Service Tools".Then scroll to "LP1 & LP2". LP1 = short probe, LP2= long probe.

2. A high reading (approximately 255) indicates watis not touching, or not conductive enough to groundthe circuit. A low reading (0-2) indicates the probe igrounded.

Removal and Replacement:1. Disconnect the brewer from the power source andallow tank to cool.2. Remove nut, wire, and washers from probe.3. Pull probe straight up from grommet.4. When reinstalling, ensure long probe is connectedto the blue wire, and short probe is connected to thebrown wire.NOTE:Heavy mineral build up on probes could indicatthat the tank, lid, and grommets may need to be delimed as well.

FIG. 17-1 LEVEL PROBES

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REFILL VALVE - EARLY MODELS

Location:The rell valve is located inside the front of the

brewer.

Test Procedures:1. Enter programming level 2, scroll to "Service Tools"

then scroll to "Rell Valve".2. Briey activate the rell valve in the test mode.With a voltmeter, check the voltage across the coilwires.3. The indication must be 120 volts ac for two wire 120volt models and three wire 120/208 -240 volt modelsor 230 volts ac for two wire 230 volt models.If voltage is present, proceed to # 4.If voltage is not present, refer to Wiring Diagramsand check main wiring harness. If harness checksok, replace control board.4. Check the rell valve for coil action.Briey activatethe rell valve in the test mode and listen carefully nearthe rell valve for a"clicking" sound as the magneticcoil pulls the plunger in.If the sound is heard as described and water willnot pass through the rell valve, there may be ablockage in the water line before the rell valve or,the solenoid valve may require inspection for wear,and removal of waterborne particles.

If the sound is not heard as described, proceed to# 5.5. Disconnect the brewer from the power source6. Check for continuity across the rell valve coterminals.If continuity is not present as described, replacethe rell valve.If continuity is present as described, there could besome debris in the valve.

Removal and Replacement:1. Remove both wires from the rell valve.2. Verify that the white shutoff clamp between valvand tank is squeezed shut.3. Disconnect both water lines at the valve.4. Remove the two 1/4"-20 screws securing the valvto the component mounting bracket.5. Using the two 1/4"-20 screws, install the new valv

to the component mounting bracket.6. Securely fasten the water lines to the valve.7. Refer to wiring diagrams when reconnecting thwires.8. Install access panels and covers and refer to InitiaSet-up for rell and operation.

FIG. 18-2 REFILL VALVE

FIG. 18-1 REFILL VALVE

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REFILL VALVE - LATER MODELS

Location:The rell valve is located inside the front of the

brewer.

Test Procedures:1. Enter programming level 2, scroll to "Service Tools"

then scroll to "Rell Valve".2. Briey activate the rell valve in the test mode.With a voltmeter, check the voltage across the coilwires.3. The indication must be 120 volts ac for two wire 120volt models and three wire 120/208 -240 volt modelsor 230 volts ac for two wire 230 volt models.If voltage is present, proceed to # 4.If voltage is not present, refer to Wiring Diagramsand check main wiring harness. If harness checksok, replace control board.4. Check the rell valve for coil action.Briey activatethe rell valve in the test mode and listen carefully nearthe rell valve for a "clicking" sound as the magneticcoil pulls the plunger in.If the sound is heard as described and water willnot pass through the rell valve, there may be ablockage in the water line before the rell valve or,the solenoid valve may require inspection for wear,and removal of waterborne particles.If the sound is not heard as described, proceed to

# 5.5. Disconnect the brewer from the power source6. Check for continuity across the rell valve coterminals.If continuity is not present as described, replacethe rell valve.If continuity is present as described, there could besome debris in the valve.

Removal and Replacement:1. Remove both wires from the rell valve.2. Verify that the white shutoff clamp between valvand tank is squeezed shut.3. Disconnect both water lines at the valve.4. Remove the two 1/4"-20 screws securing the valvto the component mounting bracket.5. Using the two 1/4"-20 screws, install the new valvto the component mounting bracket.

6. Securely fasten the water lines to the valve.7. Refer to wiring diagrams when reconnecting thwires.8. Install access panels and covers and refer to InitiaSet-up for rell and operation.

FIG. 19-2 LATER REFILL VALVE

FIG. 19-1 LATER REFILL VALVE

Flow Control Body

Flow Control Washer

Strainer

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FIG. 20-1 DV TANK HEATERS

Location:The tank heaters are located inside the tank and securedto the tank bottom.

Test Procedures:1. With a voltmeter, check voltage across the white

wire (120V Models) or red wire (120/208-240VModels) from the terminal block and black wirefrom the control board. Connect brewer to thepower source. The indication must be 120 voltsac for two wire 120 volt models or 208-240 voltsac for three wire 120/208-240 volt models (duringa heating cycle).

2. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #3.If voltage is not present as described, refer to theWiring Diagrams and check wiring harness. If harnesschecks ok, replace control board.

3. Disconnect the wires from the tank heater termi-nals.

4. Check resistance value across tank heater terminalsand compare to chart.

If resistance is present as described, reconnect thewires, the tank heater is ok.

If resistance is not present as described, replace thetank heater.

NOTE-If any resistance is read between sheath andeither terminal, remove and inspect heater for cracksin the sheath.

TANK HEATERS

1425WSmallDia.

2268WLargeDia.

1425W-120V 10.103500W-240V 16.461850W-240V 31.143500W-200V 11.433000W-240V 19.202268W-240V 6.35

HEATER

Removal and Replacement:1. Remove the top cover or top warmer housing and

front access panel as previously described.2. Drain water from the tank.

3. Disconnect all the hoses from the tank.4. Disconnect the temperature probe from the top othe tank by pulling the probe from the grommet ithe top of the tank lid.

5. Remove both level probes from their grommets6. Disconnect the green wire from the top of th

tank.7. Disconnect the limit thermostat from the side o

the tank.8. Disconnect the two white wires from the tan

warmer blanket.

9. Disconnect the wires from tank heater terminals.10. Remove the four #8-32 nuts securing the tank to

the mounting brackets and remove the tank as-sembly.

11. Remove the eight #8-32 nuts securing the tank lidto the tank.

12. Remove the two hex nuts securing the tank heateto the bottom of the tank. Remove tank heater withgaskets and discard.

13. Install new tank heater(s) with gaskets to the bottom of the tank and secure with two hex nuts.

14. Install tank assembly onto mounting brackets andsecure in place with four #8-32 nuts.

15. Install tank lid and secure in place with eight #8-3nuts.

16. Connect the two white wires of the tank warmeblanket.

39132 04170

RESISTANCE

TERMINAL TO SHEATH - INFINITE (OPEN)


21/48Page 21

LIMIT THERMOSTAT

Location:The limit thermostat is located inside the top cover onthe front side of the tank.

Test Procedures:1. Disconnect the brewer from the power source.2. Disconnect the wires from the limit thermostat.3. With an ohmmeter, check for continuity acrossthe limit thermostat terminals.

If continuity is present as described, the limit thermostatis operating properly.If continuity is not present as described, replace thelimit thermostat.

Removal and Replacement:1. Remove the wires from limit thermostat termi-nals.

2. Carefully slide the limit thermostat out from underthe retaining clip and remove limit thermostat.3. Carefully slide the new limit thermostat into theretaining clip. Ensure the metal face has good contactwith tank.

FIG. 21-2 LIMIT THERMOSTAT

FIG. 21-1 TCO CHECK

THERMAL CUT OFF(230V MODELS ONLY)

Location:The TCO's are located under the tank at the heateconnections.

Test Procedures:1. Disconnect the brewer from the power source.2. Disconnect the TCO from the tank heater.3. With an ohmmeter, check for continuity acrosthe TCO as shown above.

If continuity is not present as described, replace themain harness.

39132 04170


22/48


23/48Page 23

Location:

The temperature probe is inserted through thetank lid assembly.Test Procedures:1. Disconnect the brewer from the power source.2. With a DC voltmeter, check voltage across the

two wires at J9 on control board (Black probe toblack wire, red probe to white wire. Refer to FIG18-2). Connect the brewer to the power source.The indication should beapproximately between4vdc cool to 1vdc at ready temperature.


If voltage is present as described, circuit is workingcorrectly, check limit thermostat (and TCO on 230Vmodels).If voltage is not present as described, proceed to

#4.

4. Disconnect temperature probe from J9 on controlboard. Check the resistance across the two ter-minals of the temperature probe. The indicationshould be approximately between 10.5K cool to870 at ready temperature.

If resistance is to specication, replace the controboard.If resistance is not to specication, replace the temperature probe.

Removal and Replacement:

1. Disconnect the brewer from the power source.2. Disconnect the two pin connector from J9 o

control board.3. Pull temperature probe out of it's grommet.4. Install in reverse order.

FIG. 23-1 TEMPERATURE PROBE

TEMPERATURE PROBE

FIG. 23-2 TESTING TEMPERATURE PROBE

39132 04170


24/48Page 24

Location:

The warmer element(s) is located under the warmerplate.

Test Procedures:1. Disconnect the brewer from the power source.2. With a voltmeter, check voltage across the two

wires at the warmer element with the "ON/OFF"switch in the "ON" position. Connect the brewerto the power source. The indication must be 120volts ac for two wire 120 volt models and threewire 120/208 and 120/240 volt models, or 230volts ac for two wire 230 volt models.


If voltage is present as described, proceed to #4.If voltage is not present as described, refer to WiringDiagrams and check wiring harness.

4. Check the resistance across the two terminals onthe warmer element. Refer to chart below.

If resistance is to specication, reconnect the two

wires to the warmer element.If resistance is not to specication, replace thewarmer 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 elemen

terminals.4. Remove the two #8-32 nuts securing the warme

element to the warmer plate.5. Securely install new warmer element.6. Reconnect the two wires to warmer element ter

minals.7. Securely install warmer assembly on the brewer

FIG. 24-1 WARMER ELEMENTS

WARMER ELEMENTS

100W-120V 144.0100W-220V 484.0100W-200V 400.0

WARMER RESISTANCE

TERMINAL TO SHEATH - INFINITE (OPEN

FIG. 24-2 WARMER ELEMENTS

39132 04170


25/48


26/48Page 26

MASTER ON/OFF SWITCH

FIG. 26-1 MASTER ON/OFF SWITCH

Location:The rocker switch is located on the left side of

the trunk behind the front access panel on someearlier models. The toggle switch on later models islocated on the back of the trunk.

Test Procedure:

1. Disconnect the brewer from the power source.2. Disconnect the wires from the power switch. With

the switch in the ON position, check for continuitybetween the upper and lower terminals on eachside of the switch.

There should be continuity between the two left ter-minals and between the two right terminals when ON,no continuity when OFF.

If continuity is not present as described, replace theswitch.

Removal and Replacement:1. Disconnect the brewer from the power source.2. Disconnect the wires from the power switch.3. Remove the switch mounting screws from the lef

side of trunk.4. Install new switch in trunk with the two 6-32 x

mounting screws.

L2 L1

FIG. 26-3 ROCKER SWITCH39132 05241

FIG. 26-2 TOGGLE SWITCH LOCATION


27/48


28/48Page 28

PROGRAMMING - LEVEL 3

SPRAY OZ/M: ##.#

(-) DONE (+)

Allows technician to calibrate after probe and/or control board replacement. Select "YES".NOTE: Tank temperature must be within range (192 - 208 F)

Insert an accurate thermometer approximately 10 into tank. Adjust thnumber on the right with +/- until it matches reading of thermometerSelect "DONE"

This screen allows adjustment of the lime compensation system whenBrewLOGIC is turned on.Range: 2 - 50. Default: 10% variation of brewed volume.

200 CAL 200

(-) DONE (+)

The remaining screens in Level 3 are just a convenient shortcut to thsame ones used in previous levels.

LP1 LP2 OZ 4.50

(-) DONE (+)

CAL TEMPERATURE

NO SENSOR? YES

(-) DONE (+)

% LimeAdjust OFF

CALIBRATE FLOW ?

NO YES

39132 03201

VIDEO CLIP: Calibrate Temp Click - >

VIDEO CLIP: Calibrate sprayhead owrate with BrewLogic on Click - >

VIDEO CLIP: Calibrate sprayhead owrate with BrewLogic off Click - >


29/48Page 29

PROGRAMMING FUNCTIONS LEVEL 4 - FLOW CHART

AXIOM

VERSION ##.##

SERIAL # TYPE

(-) AX00 (+)

AXIOM

VERSION ##.##

REVERSE FORWARD

(-) DONE (+)

AX00000000

ENTERING LEVEL 4

In case of board replacement, match the Data Plate information.AX00 - Standard Axiom with warmersAXAP - Axiom AirPot ServerAXTN - Not usedAXTS - Axiom Thermal ServerEP00 - Engineering Prototype

Scroll down (-) or up (+), to set the serial number of the machineNOTE:Starting from the right, each digit will control the next digilike an odometer.

AX00000000

(-) DONE (+)

(-) AX00 (+)

SERIAL # TYPE

39132 06230


30/48Page 30

A L L M O D E L S E X C E P T T W I N S

39132 04170


31/48Page 31

0 / 6 T W I N

39132 04170


32/48Page 32

4 / 2 T W I N

39132 04170


33/48Page 33

T W I N A P S

39132 04170


34/48Page 34

P1, P2, &P3 ARE

PINS OF APOLARIZEDTHREE-PIN

CONNECTOR.

SOL

SCHEMATIC WIRING DIAGRAMAXIOM

29077.0006D 02/09 2006 BUNN-O-MATIC CORPORATION

P2 P1

P1

FRONT WARMER

P3

BRN/BLK

VIO

WHI

REAR WARMER

TANK HEATER

WHI-14 Model 20RED-14 Model 35

BLU-14

BLU-14

"KEEP WARM" HEATER WHI

BREW STATION WARMER(CONTROLLED BY ON/OFF SW)

LIMITTHERMOSTAT

BRN/BLK

VIO

P2

P3

WHI/RED

WHI/RED

WHI

REAR WARMER

FRONT WARMER WHI

WHI

WHI

WHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

RELAY

J1-5

J1-10

BLK

BLK-14

BLK-14

BRN/BLK

BLK-14

BLK-14

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

120V AC 2 WIRE120/208V AC 3 WIRE120/240V AC 3 WIRE

SINGLE PHASE

YELWHI/VIO

WHI/VIO WHI/VIO

VIO

BLKWHI

YEL YEL

WHI

WHI

CONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

A6 D1 A3 D2 A4 D3 A5 B2 A2 A1

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE(LONG)

LEVEL PROBE(SHORT)

t

(NOTE ALL WARMERS ARE NOTAVAILABLE ON ALL MODELS!)

(LEFT WARMER)

(TOP OR RIGHT WARMERS)

J9-1 BLK

CONTROL SWITCH ASSY CODES2 WARMERS

ON LEFT2 WARMERS

ON TOP2 WARMERS

ON RIGHTBREW STATION A3 A3 A3LEFT FRONT A2LEFT REAR A1TOP FRONT A5TOP REAR A6RIGHT FRONT A5RIGHT REAR A6START BREW A4 A4 A4LEFT HIDDEN B1 B1 B1RIGHT HIDDEN B2 B2 B2DIGITAL D1 D1 D1BREWER D2 D2 D2

CONTROL D3 D3 D3

GREEN

BLK Model 20 & 35

L1 L2

B L K

B L K M o d e l 1 5

N

MAIN ON/OFF SWITCH(Late 20 & 35Models only)

WHI Model 15

R E D M o d e l 3 5

W H I M o d e l 1 5 & 3 5

W H I M o d e l 2 0

W H I M o d e l 2 0

REAR

WHI

WHI

WHI

WHIFRONT

BLK BRN/BLKBLK

BLK

OPTIONAL DUAL TOP WARMER ASSY

BLU/BLK

OPTIONAL DUAL TOP WARMER ASSY

1

3

2

1

3

2

39132 05270


35/48Page 35

39132 04170


36/48Page 36

P1, P2, &P3 ARE


CONNECTOR.

SOL

SCHEMATIC WIRING DIAGRAMAXIOM DV

29077.0008B 01/07 2006 BUNN-O-MATIC CORPORATION

P2 P1

P1

FRONT WARMER

P3

BRN/BLK

VIO

WHI

REAR WARMER

GRN

BLU-14


BRN/BLK

VIO

P2

P3

WHI/RED

WHI/RED

REAR WARMER

FRONT WARMER WHI

WHI

WHI

WHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

RELAY

J1-5

J1-10

BLK

BLK-14

BRN/BLK

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

120V AC 2 WIRE + GND120/208V AC 3 WIRE + GND120/240V AC 3 WIRE + GND

SINGLE PHASE

YELWHI/VIO

WHI/VIO WHI/VIO

VIO

BLKWHI

YEL YEL

WHI

WHI

CONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

A6 D1 A3 D2 A4 D3 A5 B2 A2 A1

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t


(LEFT WARMER)


J9-1 BLK


ON LEFT2 WARMERS

ON TOP2 WARMERS

ON RIGHTBREW STATION A3 A3 A3LEFT FRONT A2LEFT REAR A1TOP FRONT A5TOP REAR A6RIGHT FRONT A5RIGHT REAR A6START BREW A4 A4 A4LEFT HIDDEN B1 B1 B1RIGHT HIDDEN B2 B2 B2DIGITAL D1 D1 D1BREWER D2 D2 D2CONTROL D3 D3 D3

BLU-14

"KEEP WARM" HEATER

LIMITTHERMOSTAT

WHI

BLK-14WHI/VIO-14

BLK-14

WHI

WHI-14BLU-14

RED-14

TANK HEATER

1425WTANK HEATER

2268W

NL1 L2

W H I

B L K R

E D

SELECTORSWITCH

BLK-14

MAIN ON/OFF SWITCH(Late Models only)

39132 04170


37/48Page 37

39132 071111

29077.0012 obsolete, refer to 29077.0022


38/48


39/48Page 39

S C H E M A T I C W I R I N G D I A G R A M A X I O M T W I N 2 / 2

C O N T R

O L

S W I T

C H A

S S Y

C O D E S

2 W A R M E R

S

O N L E F T

2 W A R M E R

S

O N T O P

2 W A R M E R

S

O N R I G H T

B R E W

S T A T I

O N

A 3

A 3

A 3

L E F T F R

O N T

A 2

L E F T R E A R

A 1

T O P F R

O N T

A 5

T O P R E A R

A 6

R I G H T F R

O N T

A 5

R I G H T R E A R

A 6

S T A R T B R E W

A 4

A 4

A 4

L E F T H I D D E N

B 1

B 1

B 1

R I G H T H I D D E N

B 2

B 2

B 2

D I G I T A L

D 1

D 1

D 1

B R E W E R

D 2

D 2

D 2

C O N T R

O L

D 3

D 3

D 3

B R N

B L U

W H I

G R N

L E V E L P R

O B E ( L

O N

G )

L E V E L P R

O B E ( S H

O R T )

t

B L K

W H I - 1 4

R E D - 1

4 2 9 0 7 7 . 0 0 1 5 A 0 6 / 0 8

2 0 0 8 B U N N - O - M

A T I C

C O R P

O R A T I O N

T A N K H E A T E R

B L K - 1

8

W H I - 1 4

B L U - 1

4

B L U - 1

4

" K E E P W A R M " H E A T E R

W H I

B R E W

S T A T I

O N W A R M E R

L I M I T

T H E R M

O S T A T

W H I / R E D

W

H I / R E D

W H I

W H I

W H I

W H I

B L K

B

L K - 1

4

B L K - 1

4

W

H I / Y E L

B L K

W

H I /

G R N

W H I /

G R N

W

H I / B L U

W

H I

W

H I / B L U

C O U N T E R

( O P T I

O N A L )

B L K

R E D - 1

4

L 1

L 2

N

B L K

R E D

M

A I N

O N / O F F

S W I T

C H

( L a t e M o d e l s o n l y )

G R N

W H I

B L K - 1

4

C h a s s i s

G r o u n d

E a r t h

G r o u n d

1 2 0 / 2 0 8 V A C 3 W I R E +

G N D

1 2 0 / 2 4 0 V A C 3 W I R E +

G N D

S I N G L E

P H A S E

J 1 1 0 1 5

T R M 1

T R M 2

C O M

N . O .

T A N K H E A T E R

B L K - 1

8

P 1 , P 2 , &

P 3 A R E

P I N

S O F A

P O L A R I Z E D

T H R E E - P

I N

C O N N E C T O R

W H I

B L U - 1

4

B L U - 1

4


B R E W

S T A T I

O N W A R M E R

L I M I T

T H E R M

O S T A T

R E D / B L K

W H I

W H I

W H

I

W H

I

W H I

R E F I L L

B R E W

B L K B

L K - 1

4

B L K - 1

4

Y E L B

L K W H I /

G R N

W H I /

G R N

W H I / B L U

W H I

W H I / B L U

C O U N T E R

( O P T I

O N A L )

B L K

J 3 J 9

( T O P W A R M E R

S )

R I G H T

L E F T P

2

P 3

P 1

W H I

B L K - 1

4

B L K - 1

4

B L K - 1

8

J 2 1 5 1 0 1 3 1 2

J 1 1 0 1 5

T R M 1

T R M 2

C O M

N . O .

B R N

B L U

W H I

G R N

L E V E L P R

O B E ( L

O N

G )

L E V E L P R

O B E ( S

H O R T )

t

B L K

J 3 J 9 1 3 1 2

C O N T R

O L

S W I T

C H A

S S Y

B 1

S T A T I

C

S H I E L D

D 1

A 3

D 2

A 4

D 3

A 5

B 2

( N O T E

A L L W A R M E R

S A R E N

O T

A V A I L A B L E

O N A L L M

O D E L

S ! )

J 2

J 2 1 5 1 0

J 2

S O L

S O L

R E F I L L

B R E W

S O L

S O L

C O N T R

O L

S W I T

C H A

S S Y

B 1

S T A T I

C

S H I E L D

D 1

A 3

D 2

A 4

D 3

A 5

B 2

( N O T E

A L L W A R M E R

S A R E N

O T

A V A I L A B L E

O N A L L M

O D E L

S ! )

39132 04170


40/48Page 40


SOL

BLU-14

BLU-14

"KEEP WARM" HEATER

WHI/RED

WHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

J1-5

J1-10

BLK

BLK-14

BRN/BLK

BLK-14

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

YELWHI/VIOVIO

BLKWHI

CONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

D1 A3 D2 A4 D3 B2

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t

J9-1 BLK


ON LEFT2 WARMERS

ON TOP2 WARMERS


GRN

WHI

BLK-14 TANK HEATER WHI-14

RELAY

100V AC2 WIRE

SINGLE PHASE

MAIN POWERSWITCH

Chassis Ground Earth Ground

LIMITTHERMOSTAT

SCHEMATIC WIRING DIAGRAM AXIOM-APSNL1

RED

WHI

EMIFILTER

GRN/YEL

BLK

BLK

Chassis Ground

39132 12030


41/48Page 41

SCHEMATIC WIRING DIAGRAM AXIOM-APS

29077.0017A 10/08 2008 BUNN-O-MATIC CORPORATION

230 VOLTS CE2 WIRE + GND

SINGLE PHASE50 HZ

SOL

BLU-14

BLU-14


LIMIT

THERMOSTAT

WHI/RED

WHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

J1-5

J1-10

BLK

BLK-14

BRN/BLK

BLK-14

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

YELWHI/VIOVIO

BLKWHI

CONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

D1 A3 D2 A4 D3 B2

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t

J9-1 BLK


ON LEFT2 WARMERS

ON TOP2 WARMERS

ON RIGHTBREW STATION A3 A3 A3LEFT FRONT A2LEFT REAR A1TOP FRONT A5TOP REAR A6RIGHT FRONT A5RIGHT REAR A6START BREW A4 A4 A4LEFT HIDDEN B1 B1 B1RIGHT HIDDEN B2 B2 B2DIGITAL D1 D1 D1BREWER D2 D2 D2

CONTROL D3 D3 D3

L2L1

RED

WHI

EMIFILTER

GRN/YEL

BLK

BLK

WHI


THERMALFUSE

THERMALFUSE

RELAY

39132 04170


42/48Page 42

SOL

SCHEMATIC WIRING DIAGRAMAXIOM DV-APS/TC


BLU-14 WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

RELAY

J1-5

J1-10

BLK

BLK-14

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

120V AC 2 WIRE + GND120/208V AC 3 WIRE + GND120/240V AC 3 WIRE + GND

SINGLE PHASE

BLKWHI

J2-1

J2-6

J2-10

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t

J9-1 BLK


ON LEFT2 WARMERS

ON TOP2 WARMERS


BLU-14

"KEEP WARM" HEATER

LIMITTHERMOSTAT

WHI

BLK-14WHI/VIO-14

BLK-14

WHI

WHI-14BLU-14

RED-14

TANK HEATER

1425WTANK HEATER

2268W

NL1 L2

W H I

B L K R

E D

SELECTORSWITCH

BLK-14

MAIN ON/OFF SWITCH(Late Models only)

CONTROL SWITCH ASSY

B1

STATICSHIELD

D1 A3 D2 A4 D3 B2

GRN

Chassis Ground

Earth Ground

39132 04170


43/48Page 43

SOL

SCHEMATIC WIRING DIAGRAMSINGLE AXIOM - 15, 20 & 35


TANK HEATER

WHI-14 Model 20RED-14 Model 35

BLU-14

BLU-14


BREW STATION WARMER(CONTROLLED BY ENABLE BREW SW)

LIMITTHERMOSTAT

WHI/RED

WHI/RED

WHI

WHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

RELAY

J1-5

J1-10

BLK

BLK-14

BLK-14BLK-14

BLK-14

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

120V AC 2 WIRE120/208V AC 3 WIRE120/240V AC 3 WIRE

SINGLE PHASE

BLKWHI

CONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

A6 D1 A3 D2 A4 D3 A5 B2

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE(LONG)

LEVEL PROBE(SHORT)

t


J9-1 BLK

CONTROL SWITCH ASSY CODESBREW WARMER A3HALF A5FULL A6START BREW A4LEFT HIDDEN B1RIGHT HIDDEN B2DIGITAL D1BREWER D2CONTROL D3

GREEN

BLK Model 20 & 35

L1 L2

B L K

B L K M o d e l 1 5

N

MAIN ON/OFF SWITCH(Late 20 & 35Models only)

WHI Model 15

R E D M o d e l 3 5

W H I M o d e l 1 5 & 3 5

W H I M o d e l 2 0

W H I M o d e l 2 0

39132 04170


44/48Page 44

39132 06171


P1, P2, &P3 ARE


CONNECTOR.

SOL

P2 P1

P1

FRONT WARMER

P3

BRN/BLK

VIO

WHI

REAR WARMER

BLU-14

BLU-14



LIMIT

THERMOSTAT

BRN/BLK

VIO

P2

P3

WHI/RED

WHI/RED

WHI

REAR WARMER

FRONT WARMER WHI

WHI

WHI

WHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

J1-5

J1-10

BLK

BLK-14

BRN/BLK

BLK-14

WHI/GRN

WHI/GRN

WHI/BLU

WHI/BLU

YELWHI/VIO

WHI/VIO WHI/VIO

VIO

BLKWHI

YEL YELCONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

A6 D1 A3 D2 A4 D3 A5 B2 A2 A1

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t


(LEFT WARMER)


J9-1 BLK


ON LEFT2 WARMERS

ON TOP2 WARMERS


L2L1

RED

WHI

EMIFILTER

GRN/YEL

BLK

BLK

WHI


THERMALFUSETHERMALFUSE

RELAY


45/48


46/48Page 46

SCHEMATIC WIRING DIAGRAMAXIOM TWIN APS/TC


ONLEFT2 WARMERS

ONTOP2 WARMERS

ONRIGHTBREW STATION A3 A3 A3LEFT FRONT A2LEFT REAR A1TOP FRONT A5TOP REAR A6RIGHT FRONT A5RIGHT REAR A6START BREW A4 A4 A4LEFT HIDDEN B1 B1 B1RIGHT HIDDEN B2 B2 B2DIGITAL D1 D1 D1BREWER D2 D2 D2

CONTROL D3 D3 D3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t

BLK

29077.0023A 11/11 201 1 BUNN-O-MATIC CORPORATION

TANK HEATERBLK

WHI

BLU-14

BLU-14


WHI

WHI

LIMITTHERMOSTAT

WHI

CONTROL

PC

BOARD

BLK

BLK-14

BLK-14 WHI-14

BLK

WHI/GRN

WHI/RED

WHI

COUNTER(OPTIONAL)

BLK

GRN or GRN/YEL

BLK-14

Chassis Ground

Earth Ground

100-200 VOLTS AC230 VOLTS AC CE

2 WIRE + GNDSINGLE PHASE 50-60 HZ

J1

10

1

5

TRM 1TRM 2

COMN.O.

TANK HEATERBLK

BLU-14

BLU-14

"KEEP WARM" HEATER

LIMITTHERMOSTAT

WHI

WHI

WHI

WHI

WHI

WHI

REFILL

DISPENSE

CONTROL

PC

BOARD

BLK

BLK-14

BLK-14

BLK

WHI/GRN

WHI/GRN

WHI/BLU

WHI

WHI/BLU

COUNTER(OPTIONAL)

BLK

J3

J9

BLK-14

BLK

J21

5

10

1

3

12

J1

10

1

5

TRM 1TRM 2

COMN.O.

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t

BLK

J3

J9

1

3

12

J2 J21

5

10

J2CONTROL SWITCH ASSY

B1

STATICSHIELD

D1 A3 D2 A4 D3 B2

CONTROLPANEL

CONTROL SWITCH ASSY

B1

STATICSHIELD

D1 A3 D2 A4 D3 B2

CONTROLPANEL

SOL

SOL

REFILL

DISPENSEWHI/GRN

WHI/RED

SOL

SOL T H E R M A L

F U S E

THERMALFUSE

T H E R M A L

F U S E

THERMALFUSE

WHI

EMIFILTER

BLK

Chassis GroundCE ONLY

WHI

WHI

L1 L2 or N

B L K

R E D

o r

W H I

MAIN ON/OFF SWITCHOPTIONAL

WHI-14

B L K

R E D

o r

W H I

39132 10131


47/48Page 47

39132 071111


100-200 VOLTS

2 WIRE + GNDSINGLE PHASE

50/60 HZ

SOL

BLU-14

BLU-14

"KEEP WARM" HEATER

LIMIT

THERMOSTATWHI

WHI

WHI

WHI

SOL

REFILL

DISPENSE

J1-1

J1-5

J1-10

CONTROLPCBOARD

BLK

BLK-14

BLK-14

WHI/GRN WHI/GRN

WHI/BLU WHI/BLU

BLKWHI

CONTROL SWITCH ASSY

J2-1

J2-6

J2-10

B1

STATICSHIELD

D1 A3 D2 A4 D3 B2 A2 A1

J3-1

J3-3

BRN

BLU

WHI

GRN

LEVEL PROBE (LONG)

LEVEL PROBE (SHORT)

t

J9-1 BLK

CONTROL SWITCH ASSY CODES

ON/OFF A3

BREW A A1BREW B A2BREW C A7

START BREW A4LEFT HIDDEN B1RIGHT HIDDEN B2DIGITAL D1BREWER D2CONTROL D3

A7

WHI

WHI

EMIFILTER

GRN/YELBLK

BLK

WHI


THERMALFUSE

THERMALFUSE

RELAY

REDJ9-1 BLK BEEPER

L1 L2 or N

BLK

RED

MAIN ON/OFF SWITCH

SCHEMATIC WIRING DIAGRAM AXIOM TSTERMINAL BLOCK

+

-


48/48

T I C W I R I N G D I A G R A M A X I O M T W I N 4 / 2

C O N T R

O L

S W

I T C H A

S S Y

C O D E S

2 W A R M E R

S

O N L E F T

2 W A R M E R

S

O N T O P

2 W A R M E R

S

O N R I G H T

B R E W

S T A T I

O N

A 3

A 3

A 3

L E F T F R

O N T

A 2

L E F T R E A R

A 1

T O P F R

O N T

A 5

T O P R E A R

A 6

R I G H T F R

O N T

A 5

R I G H T R E A R

A 6

S T A R T B R E W

A 4

A 4

A 4

L E F T H I D D E N

B 1

B 1

B 1

R I G H T H I D D E N

B 2

B 2

B 2

D I G I T A L

D 1

D 1

D 1

B R E W E R

D 2

D 2

D 2

C O N T R

O L

D 3

D 3

D 3

L E V E L P R

O B E ( L

O N

G )

L E V E L P R

O B E ( S H

O R T )

t

W H I - 1 4

R E D - 1

4 2 9 0 7 7 . 0 0 2 6 A 0 2 / 1 2

2 0 1 2 B U N N - O - M

A T I C

C O R P

O R A T I O N

T A N K H E A T E R

B L K - 1

8

W H I - 1 4

P 1 , P 2 , &

P 3 A R E

P I N

S O F A

P O L A R I Z E D

T H R E E - P

I N

C O N N E C T O R

W H I

B L U - 1

4

B L U - 1

4


W H I

B R E W

S T A T I

O N W A R M E R

L I M I T

T H E R

M O S T A T

W H I / R E D

W H I / R E D

W H I

W H I

W H I

W H I

R E F I L L

S O L

D I S P E N

S E

S O L

B L K B

L K - 1

4

B L K - 1

4

B R N / B L K

B L K

W H I /

G R N

W H I /

G R N

W H I / B L U

W H I

W H I / B L U

C O U N T E R

( O P T I

O N A L )

V I O

B L K

R E D - 1

4

L 1

L 2

N

B L K

R E D

M A I N

O N / O F F

S W I T

C H

( L a t e M o d e l s o n l y )

G R N

( T O P W A R M E R

S )

R E A R

F R O N T

P 2

P 3

P 1

W H I

B L K - 1

4

C h a s s i s

G r o u n d

E a r t h

G r o u n d

1 2 0 / 2 0 8 V A C 3 W I R E +

G N D

1 2 0 / 2 4 0 V A C 3 W I R E +

G N D

S I N G L E

P H A S E

J 1 1 0 1 5

T R M 1

T R M 2

C O M

N . O .

T A

N K H E A T E R

P 1 , P 2 , &

P 3 A R E

P I N

S O F A

P O L A R I Z E D

T H R E E - P

I N

C O N N E C T O R

W H I

B L U - 1

4


B R E W

S T A T I

O N W A R M E R

L I M I T

M O S T A T

W H I

W H I

W H I

W H I

R E F I L L

S O L

D I S P E N

S E

S O L

B L K - 1

4 W H I / G R N

W H I / B L U

U N T E R

T I O N A L )

( T O P W A R M E R

S )

R E A R

F R O N T

P 2

P 3

P 1

W H I

B L K - 1

4

B L K - 1

8

B R N

B L U

W H I

G R N

L E V E L P R

O B E ( L

O N

G )

L E V E L P R

O B E ( S H

O R T )

t

B L K

J 3 J 9 1 3 1 2

C O N T R

O L

S W I T

C H A

S S Y

D 1

A 3

D 2

A 4

D 3

A 5

B 2

A 2

A 1

( N O T E

A L L W A R M

E R S A R E N

O T

A V A I L A B L E

O N A L L M

O D E L

S ! )

J 2 1 5 1 0

C O N T R

O L

S W I T

C H A

S S Y

B 1

S T A T I C

S H I E L D

A 6

D 1

A 3

D 2

A 4

D 3

A 5

B 2

A 2

A 1

( N O T E

A L L W A R M E R

S A R E N

O T

A V A I L A B L E

O N A L L M

O D E L

S ! )

J 2

Opis Kafeap

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