Bunn Coffee Maker Manual

8/6/2019 Bunn Coffee Maker Manual

1/19

OPERATING & SERVICE MANUAL

BUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227PHONE: (217) 529-6601 FAX: (217) 529-6644

www.bunnomatic.com

VP17

VP17B

10860.0000E 04/07 1996 Bunn-O-Matic Corporation

To obtain the Illustrated Parts Catalog, visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE,and the quickest way to obtain the catalog. Contact Bunn-O-Matic Corporation at 1-800-286-6070 to obtain a papercopy o the required Illustrated Parts Catalog mailed via U.S. Postal Service.


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Page 2

INTRODUCTIONThis equipment will brew a hal-gallon batch o coee into an awaiting dispenser. It is only or indoor use

on a sturdy counter or shel.

WARRANTY

Bunn-O-Matic Corp. (Bunn) warrants the equipment manuactured by it to be commercially ree rom de-

ects in material and workmanship existing at the time o manuacture and appearing within one year rom thedate o installation. In addition:1.) Bunn warrants electronic circuit and/or control boards to be commercially ree rom deects in material

and workmanship or three years rom the date o installation.2.) Bunn warrants the compressor on rerigeration equipment to be commercially ree rom deects in mate-

rial and workmanship or two years rom the date o installation.3.) Bunn warrants that the grinding burrs on coee grinding equipment will grind coee to meet original

actory screen sieve analysis or three years rom date o installation or or 30,000 pounds o coee, whichevercomes rst.

This warranty does not apply to any equipment, component or part that was not manuactured by Bunn orthat, in Bunns judgement, has been aected by misuse, neglect, alteration, improper installation or operation,

improper maintenance or repair, damage or casualty.THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR

ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHERMERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees o Bunnare not authorized to make modications to this warranty or to make additional warranties that are binding onBunn. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties andshould not be relied upon.

The Buyer shall give Bunn prompt notice o any claim to be made under this warranty by telephone at (217)529-6601 or by writing to Post Oce Box 3227, Springeld, Illinois, 62708-3227. I requested by Bunn, theBuyer shall ship the deective equipment prepaid to an authorized Bunn service location. I Bunn determines, inits sole discretion, that the equipment does not conorm to the warranty, Bunn shall repair the equipment with no

charge or parts during the warranty period and no charge or labor by a Bunn Authorized Service Representativeduring the warranty period. I Bunn determines that repair is not easible, Bunn shall, at its sole option, replacethe equipment or reund the purchase price or the equipment.

THE BUYERS REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THESALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, ASSPECIFIED HEREIN, TO REPAIR OR, AT BUNNS SOLE OPTION, REPLACEMENT OR REFUND.

In no event shall Bunn be liable or any other damage or loss, including, but not limited to, lost prots, lostsales, loss o use o equipment, claims o Buyers customers, cost o capital, cost o down time, cost o substituteequipment, acilities or services, or any other special, incidental or consequential damages.

USER NOTICESCareully read and ollow all notices in this manual and on the equipment. All labels on the equipment shouldbe kept in good condition. Replace any unreadable or damaged labels.

10860 061501

#12364.0000

#00833.0000


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Page 310860 04030

# 00831.0000

# 00658.0000

USER NOTICES (cont.)

#02763.0000

WARNING!Fill water tank before turning - on -thermostat or connecting applianceto power source.Use only on a properly protectedcircuit capable of the rated load.

Electrically ground the chassis.Follow national/local electrical codes.Do not use near combustibles.

FAILURE TO COMPLY RISKS EQUIPMENT

DAMAGE, FIRE, OR SHOCK HAZARD

READ THE ENTIRE OPERATING MANUAL

BEFORE BUYING OR USING THIS PRODUCT

THIS APPLIANCE IS HEATED WHENEVER

CONNECTED TO A POWER SOURCE00831.0000 F 3/98 1998 BUNN-O-MATIC CORPORATION

CAUTION WARMERS AND SURFACES ARE HOT

POUR IN WATER ONLY

#37881.0000

To reduce the risk of electric shock,do not remove or open cover.No user-serviceable parts inside.

Authorized service personnel only.Disconnect power before servicing.

#37881.0002


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Page 4

ELECTRICAL REQUIREMENTS

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

The brewer has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, singlephase, 60 Hz.

Electrical Hook-Up (Model "B" Only)CAUTION Improper electrical installation will damage electronic components.1. An electrician must provide electrical service as specied.

2. Using a voltmeter, check the voltage and color coding o each conductor at the electrical source.3. Place the heater switch, located on the let ront o the control panel on "B" Models, in the "OFF" (lower)

position.4. Remove the ront panel beneath the sprayhead.5. Feed the cord through the strain relie and connect it to the terminal block.6. Connect the brewer to the power source and veriy the voltage at the terminal block beore proceeding. Re-

place the ront panel.

INITIAL SET-UP

CAUTION - The brewer must be disconnected rom the power source throughout the initial set-up, except whenspecied in the instructions.

1. Insert an empty unnel into the unnel rails.2. Place an empty decanter under the unnel.3. On "B" Models, place the heater switch o the brewer in the "OFF" (lower) position and connect the brewer to

the power source.4. Pour three pitchers o tap water into the screened area on top o the brewer. Allow approximately two minutes

between pitchers or water to fow into the tank. While the third pitcher o water is entering the tank, the tankwill ll to capacity and the excess will fow rom the sprayhead, out o the unnel, and into the dispenser.

5. When the fow o water rom the unnel stops, place the heater switch o the brewer in the "ON" (upper) posi-tion and wait approximately twenty minutes or the water in the tank to heat to the proper temperature. Somewater will drip rom the unnel during this time; this is due to expansion and should not occur thereater.

6. Pour one pitcher o tap water into the screened area on top o the brewer.7. Ater water has stopped fowing rom the unnel, allow the water in the tank to reheat to the proper tem-

perature.8. Empty the decanter. The brewer is now ready or use in accordance with the coee brewing instructions.

"B" models require 2-wire,grounded service rated 100 voltsac, 20 amp, single phase, 50 Hz.Proceed as ollows:

10860 061501

100V.A.C.

WHITE

NEUTRAL

L1 BLACK

P2185


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Page 5

COFFEE BREWING

1. Insert a BUNN lter into the unnel.2. Pour the resh coee into the lter and level the bed o grounds by gently shaking.3. Slide the unnel into the unnel rails.4. Place an empty dispenser beneath the unnel.5. Pour one pitcher o tap water into the screened area on top o the brewer.

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

CLEANING

1. The use o a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended or cleaning alsuraces on Bunn-O-Matic equipment.

2. Check and clean the sprayhead. The sprayhead holes must always remain open.3. With the sprayhead removed, insert the deliming spring (provided) all the way into the sprayhead tube

When inserted properly, no more than two inches o spring should be visible. Saw back and orth ve or sixtimes.

NOTE In hard water areas, this may need to be done daily. It will help prevent liming problems in the breweand takes less than a minute.

10860 04179


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Page 6

TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies or the most likely problemsencountered. I the problem remains ater exhausting the troubleshooting steps, contact the Bunn-O-MaticTechnical Service Department.

Inspection, testing, and repair o electrical equipment should be perormed only by qualied service person-nel.

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

Intermittent operation o electronic circuit boards is unlikely. Board ailure will normally be permanent. Ian intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at aterminal or crimp.

Solenoid removal requires interrupting the water supply to the valve. Damage may result i solenoids areenergized or more than ten minutes without a supply o water.

The use o two wrenches is recommended whenever plumbing ttings are tightened or loosened. This willhelp 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 rom 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 saety notices

PROBLEM

Brew cycle will not start

Water is not hot

PROBABLE CAUSE

1. No water

2. No power or incorrect voltage

to the brewer

1. Tank Heater Switch (VP17B andEarly Model VP17)

2. Limit ThermostatCAUTION - Do not eliminate orbypass limit thermostat. Use onlyreplacement part #29329.1000

3. Control Thermostat

REMEDY

Check ll basin or obstructions.

(A1) Be sure the brewer is con-

nected to the power source.(A2) Check the terminal blockor 100 volts on "B Series" brew-ers across the white and blackterminals.

(B) Check circuit breakers oruses.

Reer to Service - Tank HeaterSwitch or testing procedures.

See page 14

Reer to Service- Limit Thermo-stat or testing procedures. Seepage 11

Reer to Service - Control Ther-mostat or testing procedures.See page 10

10860 061501


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Page 7

TROUBLESHOOTING (cont.)

PROBLEM

Water is not hot (cont.)

Inconsistent beverage level in

dispenser

Spitting or excessive steaming

Dripping rom sprayhead

PROBABLE CAUSE REMEDY

4. Tank Heater

1. Syphon System

2. Lime Build-upCAUTION - Tank and tank compo-nents should be delimed regularlydepending on local water condi-tions. Excessive mineral build-upon stainless steel suraces caninitiate corrosive reactions result-ing in serious leaks.

1. Lime Build-upCAUTION - Tank and tank compo-nents should be delimed regularlydepending on local water condi-tions. Excessive mineral build-upon stainless steel suraces caninitiate corrosive reactions result-ing in serious leaks.

2. Control Thermostat

1. Syphon System

2. Lime Build-upCAUTION - Tank and tank compo-nents should be delimed regularly

depending on local water condi-tions. Excessive mineral build-upon stainless steel suraces caninitiate corrosive reactions result-ing in serious leaks.

Reer to Service- Tank Heater otesting procedures. See page 13

The brewer must be level o

slightly lower in ront to syphonproperly.

Inspect the tank assembly oexcessive lime deposits. Delimeas required.

Inspect tank assembly or exces-sive lime deposits. Delime asrequired.

Reer to Service - Control Ther-mostat or testing proceduresSee page 10

The brewer must be level oslightly lower in ront to syphonproperly.

Inspect the tank assembly oexcessive lime deposits. Delimeas required.

10860 09080


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Page 8

TROUBLESHOOTING (cont.)

PROBLEM

Beverage overfows dispenser

Weak beverage

Dry coee grounds remain in theunnel

Brewer is making unusal noises

Cool beverage serving tempera-ture

PROBABLE CAUSE REMEDY

1. Dispenser

1. Filter Type

2. Coee Grind

3. Sprayhead

4. Funnel Loading

5. Water Temperature

1. Funnel Loading

1. Tank Heater

1. ON/OFF Warmer Switch(s)

2. Warmer Element(s)

The dispenser must be completelyempty beore starting a brewcycle.

BUNN paper lters must be usedor proper extraction.

A ne or drip grind must be usedor proper extraction.

A six-hole stainless steel spray-head must be used or properextraction.

The BUNN paper lter must becentered in the unnel and thebed o ground leveled by gentleshaking.

Place an empty unnel on an emptydispenser beneath the sprayhead.Initiate a brew cycle and check thewater temperature immediatelybelow the sprayhead with a ther-mometer. The reading should not

be less than 195F (91C). Adjustthe control thermostat to increasethe water temperature. Replace inecessary.

The BUNN paper lter must becentered in the unnel and thebed o grounds leveled by gentlyshaking.

Remove and clean lime o the tank

heater. See page 13

Reer to Service- ON/OFF WarmerSwitch or testing procedures. Seepage 12

Reer to Service - Warmer Ele-ment or testing procedures. Seepage 16

10860 090800


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Page 9

SERVICE

This section provides procedures or testing andreplacing various major components used in thisbrewer should service become necessary. Reer toTroubleshootingor assistance in determining thecause o any problem.

WARNING - Inspection, testing, and repair o electrical

equipment should be perormed only by qualied ser-vice personnel. The brewer should be unplugged whenservicing, except when electrical tests are required andthe test procedure specically states to plug

in the brewer.

COMPONENT ACCESS

WARNING - Disconnect the brewer rom the powersource beore the removal o any panel or the replace-ment o any component.

All components are accessible by the removal othe top cover and ront inspection panel and warmerassemblies.

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

The ront inspection panel is attached with our#6-32 screws.

The warmer assembly is attached with three #4-40

screws.

Contents

Control Thermostat ............................................10Limit Thermostat................................................11ON/OFF Switch ...................................................12Tank Heater ........................................................13Tank Heater Switch ............................................14

Warmer Elements...............................................16Wiring Diagrams ................................................17

P1160.40

10860 09080

FIG. 1 COMPONENT ACCESS


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Page 10

P1263

Location:The control thermostat is located inside the trunk

on the let side o the component bracket.

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

blue wire on the control thermostat and the whitewire on the tank heater. Connect the brewer to thepower source. The indication must be:a) 100 volts ac or two wire 100 volt models.b) 120 volts ac or two wire 120 volt models.

3. Disconnect the brewer rom the power source.

I voltage is present as described, proceed to #4.I voltage is not present as described, reer to theWiringDiagramsand check the brewer wiring harness.

4. Gently remove the capillary bulb and grommetrom the tank.

5. With a voltmeter, check the voltage across the blackwire o the control thermostat and the white wireon the tank heater when the control thermostat isturned "ON" (Fully clockwise). Connect the brewerto the power source. The indication must be:a) 100 volts ac or two wire 100 volt models.b) 120 volts ac or two wire 120 volt models.

6. Voltage must not be present when the thermostatis turned to the "OFF" position.

P1161.40

SERVICE (cont.)

CONTROL THERMOSTAT 7. Disconnect the brewer rom the power source.

I voltage is present as described, reinstall the capillarytube into the tank to the line 4.5" above the bulb, thecontrol thermostat is operating properly.I voltage is not present as described, replace thethermostat.

Removal and Replacement:1. Remove wires rom control thermostat leads.2. Remove the thermostat capillary bulb by rmly

pulling up on the capillary at the tank lid. This willdisengage the grommet rom the tank lid.

3. Remove the one #8-32 screw securing the con-trol thermostat to the component bracket in thetrunk.

4. Slide the grommet to the line 4.5" above the bulb

on the new capillary tube.5. Insert the capillary bulb through the hole in thetank lid and press the grommet rmly and evenlyso that the groove in the grommet ts into the tanklid.

6. Careully bend the capillary tube so that the tubeand bulb inside the tank are in the vertical posi-tion.

NOTE - The capillary tube must be clear o any electri-cal termination and not kinked.

7. Using one #8-32 screw secure the control thermo-stat to the component bracket inside the trunk.

8. Reer to Fig. 3 when reconnecting the wires.9. Adjust the control thermostat as required.

FIG. 2 CONTROL THERMOSTAT

FIG. 3 CONTROL THERMOSTAT TERMINALS10860 090800

BLU to BLU Lead romLimit Thermostat

BLK to BLK Lead romTank Heater


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Page 11

SERVICE (cont.)

10860 06150

LIMIT THERMOSTAT

P1161.40

FIG. 4 LIMIT THERMOSTAT

Location:

The limit thermostat is located inside the rear othe hood on the tank lid.

Test Procedures:1. Disconnect the brewer rom the power source.2. Disconnect the blue and black wires rom the limit

thermostat.3. With an ohmmeter, check or continuity across

the limit thermostat terminals.

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

Removal and Replacement:1. Remove all wires rom limit thermostat termi-

nals.2. Careully slide the limit thermostat out rom unde

the retaining clip and remove limit thermostat.3. Careully slide the new limit thermostat into the

retaining clip.4. Reer to Fig. 5 when reconnecting the wires.

P1800

BLK to Terminal Block or Tank Heater Switch

BLU to BLU Lead romControl Thermostat

FIG. 5 LIMIT THERMOSTAT TERMINALS


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Page 12

I voltage is not present as described, reer to theWiringDiagramsand check the brewer wiring harness.

5. With the black wire removed, remove the wire romthe lower terminal.

6. Check or continuity across the center and lowerterminal with the switch in the "ON" (upper) posi-

tion. Continuity must not be present when theswitch is in the "OFF" (lower) position.

I continuity is present as described, reconnect theblack wire to the center terminal and the remainingwire to the lower terminal.I continuity is not present as described, replace theswitch.

Removal and Replacement:1. Remove the wires rom the switch terminals.2. Remove ront end cap.3. Compress the clips inside the hood and gently

push the switch through the opening.4. Push the new switch into the opening and spread

the clips to hold switch in the hood.5. Reinstall ront end cap.6. Reer to Fig. 7 when reconnecting the wires.

P1918

SERVICE (cont.)

ON/OFF WARMER SWITCH

Location: The ON/OFF warmer switch(es) are located on theront o the hood.

Test Procedure:1. Disconnect the brewer rom the power source.2. Viewing the switch rom the back, remove the

white wire rom the upper terminal and the blackwire rom the center terminal.

3. With a voltmeter, check the voltage across thewhite wire and the black wire. Connect the brewerto the power source. The indication must be:a) 100 volts ac or two wire 100 volt models.b) 120 volts ac or two wire 120 volt models.


I voltage is present as described, reconnect the whitewire and proceed to #5.

P1166.40

FIG. 6 ON/OFF WARMER SWITCHES

FIG. 7 ON/OFF SWITCH TERMINALS

10860 061501

ONE LOWER WARMER

TWO WARMERS

THREE WARMERS

WHI to Lower Warmer

BLK to Terminal Blockor Tank Heater Switch

Terminal #1 (See ChartBelow)

Connect wire to Terminal #1 as follows:

Lower Warmer ..................................................... WHI/REDOne Upper Warmer (Rear) ............................................ VIOTwo Upper or Side Warmers(Front) ...................................................................BRN/BLK(Rear)............................................................................ VIO


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SERVICE (cont.)

10860 09080

TANK HEATER

P1161.40

Location:

The tank heater is located inside the tank andsecured to the tank lid.

Test Procedures:1. Disconnect the brewer rom the power supply.2. With a voltmeter, check the voltage across the black

and white wires on the tank heater. Connect thebrewer to the power source. The indication mustbe:a) 100 volts ac or two wire 100 volt models.b) 120 volts ac or two wire 120 volt models.


I voltage is present as described, proceed to #4I voltage is not present as described, reer to the Wir-ing Diagramsand check wiring harness.

4. Disconnect the black wire and the white wire romthe tank heater terminals.

5. Check or continuity across the tank heater termi-nals.

I continuity is present as described, reconnect thewires, the tank heater is operating properly.I continuity is not present as described, replace thetank heater.NOTE- I the tank heater remains unable to heat, removeand inspect heater or cracks in the sheath.

Removal and Replacement:1. Remove the tank inlet tting securing the ll basin

to the tank lid, remove ll basin and tank inletgasket. Set all three parts aside or reassembly.

2. Disconnect the black wire on the limit thermostatrom the tank heater switch and disconnect theblue wire rom the limit thermostat to the controthermostat.

3. Disconnect the black wire and the white wire romthe tank heater terminals.

4. Remove sprayhead and the hex nut securing thesprayhead tube to the hood. Set aside or reas-

sembly.5. Remove the eight #8-32 nuts securing the tank lid

to the tank.6. Remove the tank lid with limit thermostat, spray

head tube and tank heater7 Remove the two hex nuts securing the tank heate

to the tank lid. Remove tank heater with gasketsand discard.

8. Install new tank heater with gaskets on the tanklid and secure with two hex nuts.

9. Install tank lid with limit thermostat, sprayheadtube and tank heater using eight #8-32 hex nut.10. Secure spayhead tube to hood using a hex nut.11. Install sprayhead.12. Reconnect the wires to the limit thermostat

tank heater and control thermostat. See LimiThermostatand Control Thermostatsections inthis manual when reconnecting wires.

13. Install ll basin, secure with tank inlet tting andgasket.

14. Reer to Fig. 9 when reconnecting the tank

heater wires.

FIG. 8 TANK HEATER

P1163FIG. 9 TANK HEATER TERMINALS

BLK to ControlThermostat

WHI to WHI Lead onPower Cord (120VModels)WHI to Terminal Block(White Insert) (100 VModels)


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Page 14

Location:On Early VP17 Models the tank heater switch is

located on the rear o the brewer on the upper let sideo the trunk.On VP17B Models the tank heater switch is located

on let side o the control panel.

Test Procedure:1. Disconnect the brewer rom the power source.2. Disconnect the black wire rom the limit thermo-

stat.3. With a voltmeter, and with the tank heater switch in

the "ON" (upper) position check the voltage between

the black wire removed rom the limit thermostatand the white wire on the tank heater. Connect thebrewer to the power source. The indication mustbe:a) 100 volts ac on two wire 100 volt models.b) 120 volts ac on two wire 120 volt models.


I voltage is present as described, proceed to #5.I voltage is not present as described, reer to theWiringDiagramsand check the brewer wiring harness.

5. Check or continuity between the black wire re-moved rom the limit thermostat and the black inserton the terminal block, with the tank heater switchin the "ON" (upper) position. Continuity should notbe present in the "OFF" (lower) position.

I continuity is present as described, the tank heaterswitch is operating properly.I continuity is not present as described, replace thetank heater switch.

Removal and Replacement: (VP17)1. Remove the tank inlet tting securing ll basin to

the tank lid. Remove ll basin and gasket. Set allthree parts aside or reassembly.

2. Remove sprayhead and hex nut securing sprayheadtube to the hood. Set aside or reassembly.

3. Disconnect the wires on the limit thermostat andthe tank heater.

4. Gently pull the thermostat sensor and grommetrom the tank lid.

5. Insert a tube to the bottom o the tank and syphonALL o the water out.

6. Gently reinstall the thermostat sensor and grom-

met in the tank lid.7. Remove the two #8-32 screws securing the tank

assembly to the hood.8. Lit tank and components out as an assembly and

set aside or reassembly.9. Disconnect the two black wires rom the tank heater

switch.10. Remove the plastic acenut, hex acenut and the

switch indicator/guard bracket that secures tankheater switch to the brewer. Remove switch and

discard.11. Insert new tank heater switch through the hole inthe upper let rear o the trunk and secure withswitch indicator/guard bracket, hex acenut andplastic acenut.

12. Reconnect the two black wires the tank heaterswitch terminals.

TANK HEATER SWITCH (VP17B and early modelVP17)

P1161.40VP17 MODELS (Early Models)

VP17B MODELS P1319.40

SERVICE (cont.)

FIG. 10 TANK HEATER SWITCH

10860 061501


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Page 15

SERVICE (cont.)

13. Set tank assembly inside the hood on mountingbrackets and secure with two #8-32 screws.

14. Reconnect the wires to the limit thermostat, tankheater and the control thermostat. Reer to LimitThermostat, Tank Heater and Control Thermo-

statsections in this manual when reconnectingwires.

15. Secure the sprayhead tube to the hood using hexnut.

16. Install sprayhead.17. Install ll basin, inlet gasket and secure to tank lid

with tank inlet tting.18. Reer to Fig. 11 when reconnecting the wires.

Removal and Replacement: (VP17B)1. Remove the tank inlet tting securing ll basin to

the tank lid. Remove ll basin and gasket. Set allthree parts aside or reassembly.

2. Disconnect the two black wires rom the tank heaterswitch.

3. Remove the plastic acenut, hex acenut and theswitch indicator/guard bracket that secures tankheater switch to the brewer. Remove switch anddiscard.

4. Insert new tank heater switch through the holein the lower let o the control panel and secure

with swtich indicator/guard bracket, hex acenutand plastic acenut.5. Reconnect the two black wires the to the tank

heater switch terminals.6. Install ll basin, inlet gasket and secure to tank lid

with tank inlet tting.7. Reer to Fig. 11 when reconnecting the wires.

TANK HEATER SWITCH (cont.)

P1135

FIG. 11 TANK HEATER SWITCH TERMINALS

10860 09080

BLK to Limit Ther-mostat

BLK to TerminalBlock (Black Insert)


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Page 16

WARMER ELEMENT(S)

P1167

SERVICE (cont.)

Location:The warmer element(s) is located under the warmer

plate.

Test Procedures:1. Disconnect the brewer rom the power source.

2. With a voltmeter, check voltage across the whitewire to the power cord and the white/red, brown/black or violet wire to the "ON/OFF" switch, withthe "ON/OFF" switch in the "ON" (upper) position.The indication must be:a) 100 volts ac or two wire 100 volt models.b) 120 volts ac or two wire 120 volt models.


I voltage is present as described, proceed to #4.

I voltage is not present as described, reer to WiringDiagramsand check brewer wiring harness.

4. Check the continuity across the two terminals onthe warmer element.

I continuity is present as described, reconnect thewhite wire and white/red, brown/black or violet wireson the warmer element.

P1164

I continuity is not present as described, replace thewarmer element.

Removal and Replacement:1. Remove the three #4-40 screws securing the

warmer assembly to the brewer.2. Lit the warmer assembly rom the brewer.3. Disconnect the two wires rom the warmer element

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

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.8. Reer to the illustration below when reconnecting

the wires.

FIG. 13 WARMER ELEMENT TERMINALS

WHI to WHI Lead on Power Cord (120V Brewers)WHI to Terminal Block (100V Brewers)

WHI/RED to ON/OFF Switch (One Lower Warmer)BRN/BLK to ON/OFF Switch (to Front Warmer orSide Warmer)VIO to ON/OFF Switch (Top Rear Warmer or RearSide Warmer)

10860 121101


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Page 1710860 06150

SCHEMATIC WIRING DIAGRAM

VP17-1/-2/-3

10862.0003H 09/06 1997 BUNN-O-MATIC CORPORATION

WHI

WHIWHI

WHI

WHI

WHI

LOWER WARMER

N

WHI

120 VOLTS AC

2 WIRE + GND

SINGLE PHASE

BLK BRN/BLK BRN/BLK

BLK VIO VIO

VP17-3 2 SIDE WARMERS

1320W

BLK

TANK HEATER

L1GRN

BLK BLU

SW. & THERMOSTAT

ON/OFF SWITCH

WHI/RED

"KEEP WARM" HEATER

50WWHI

BLK

LIMIT

THERMOSTAT

WHI

REAR WARMER

WHI

WHIP3 P1

VIOBLK

VP17-2 TOP WARMER ASSY

VIO WHI

ON/OFF SWITCH

ON/OFF SWITCH

ON/OFF SWITCH

NOT USED ON LATE MODELSWITH SIDE WARMERS

FRONT WARMER

REAR WARMER


18/19

Page 1810860 061501


VP17-1/-2/-3

10862.0000B 9/00 1995 BUNN-O-MATIC CORPORATION

P2

P1FRONT WARMER

WHI

WHI

P3

WHI

BRN/BLK

VIO

WHI

REAR WARMER

WHI

WHI

LOWER WARMER

N

WHI

120 VOLTS AC 2 WIRESINGLE PHASE

BLK BRN/BLK

BLK VIO

2 TOP or SIDE WARMERS

AUXILIARY OUTLET (NOT AVAILABLE ON VP17-3)

BLK

TANK HEATER

L1GRN

BLK

HEATERSWITCH

BLK BLU

READY INDICATOR

BLU

SW. & THERMOSTAT

ON/OFF SWITCH

WHI/RED

"KEEP WARM" HEATER

WHI

BLK

LIMITTHERMOSTAT

BLK

WHI

REAR WARMER

WHI

WHIP3 P1VIOBLK

1 TOP WARMER

VIO WHI

GRN

200 WATT MAXIMUM

WHIBLK

BLK

ON/OFF SWITCH

ON/OFF SWITCH

ON/OFF SWITCH


19/19


VP17B-1/-2/-3

10862.0002G 09/06 1997 BUNN-O-MATIC CORPORATION

P2

P1FRONT WARMER

WHI

WHI

P3

WHI

BRN/BLK

VIO

WHI

REAR WARMER

WHI

WHI

LOWER WARMER

N

WHI

100 VOLTS AC

2 WIRE + GNDSINGLE PHASE

BLK BRN/BLK

BLK VIO

BLK

TANK HEATER

L1GRN

BLK

HEATERSWITCH

BLK BLU

READY INDICATOR

BLU

SW. & THERMOSTAT

ON/OFF SWITCH

WHI/RED

"KEEP WARM" HEATER

WHI

BLK

LIMITTHERMOSTAT

BLK

WHI

REAR WARMER

WHI

WHIP3 P1VIOBLK

1 TOP WARMER

VIO WHI

GRN

200 WATT MAXIMUM

WHIBLK

BLK

ON/OFF SWITCH

ON/OFF SWITCH

ON/OFF SWITCH

2 TOP or SIDE WARMERS

NOT USED ON LATE MODELSWITH SIDE WARMERS

AUXILIARY OUTLET (NOT AVAILABLE ON VP17-3)

(EARLY MODELS ONLY)

Date post:	07-Apr-2018
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Bunn Coffee Maker Manual

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