VP17
VP17B
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
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 paper
copy of the required Illustrated Parts Catalog mailed via U.S. Postal Service.
10860.0000E 04/07 ©1996 Bunn-O-Matic Corporation
www.bunnomatic.com
INTRODUCTION
This equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It is only for indoor use
on a sturdy counter or shelf.
WARRANTY
Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects in material and workmanship existing at the time of manufacture and appearing within one year from the
date of installation. In addition:
1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material
and workmanship for three years from the date of installation.
2.) Bunn warrants the compressor on refrigeration equipment to be commercially free from defects in material and workmanship for two years from the date of installation.
3.) Bunn warrants that the grinding burrs on coffee grinding equipment will grind coffee to meet original
factory screen sieve analysis for three years from date of installation or for 30,000 pounds of coffee, whichever
comes first.
This warranty does not apply to any equipment, component or part that was not manufactured by Bunn or
that, in Bunn’s judgement, has been affected 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 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.
The Buyer shall give Bunn prompt notice of any claim to be made under this warranty by telephone at (217)
529-6601 or by writing to Post Office Box 3227, Springfield, Illinois, 62708-3227. If requested by Bunn, the
Buyer shall ship the defective equipment prepaid to an authorized Bunn service location. If Bunn determines, in
its sole discretion, that the equipment does not conform to the warranty, Bunn shall repair the equipment with no
charge for parts during the warranty period and no charge for labor by a Bunn Authorized Service Representative
during the warranty period. If Bunn determines that repair is not feasible, Bunn shall, at its sole option, 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, AS
SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, 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.
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.
#12364.0000
#00833.0000
Page 10860 061501
USER NOTICES (cont.)
! WARNING
Fill water tank before turning - on thermostat or connecting appliance
to power source.
Use only on a properly protected
circuit 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 SOURCE
# 00658.0000
00831.0000F 3/98 ©1998 BUNN-O-MATIC CORPORATION
# 00831.0000
CAUTION
WA R M E R S A N D S U R FA C E S A R E H O T
POUR IN WATER ONLY
#02763.0000
#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
Page 10860 040307
ELECTRICAL REQUIREMENTS
CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up.
The brewer has an attached cordset and requires 2-wire grounded service rated 120 volts ac, 15 amp, single
phase, 60 Hz.
WHITE
NEUTRAL
100V.A.C.
L1 BLACK
"B" models require 2-wire,
grounded service rated 100 volts
ac, 20 amp, single phase, 50 Hz.
Proceed as follows:
P2185
Electrical Hook-Up (Model "B" Only)
CAUTION – Improper electrical installation will damage electronic components.
1. An electrician must provide electrical service as specified.
2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
3. Place the heater switch, located on the left front of the control panel on "B" Models, in the "OFF" (lower)
position.
4. Remove the front panel beneath the sprayhead.
5. Feed the cord through the strain relief and connect it to the terminal block.
6. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Replace the front panel.
INITIAL SET-UP
CAUTION - The brewer must be disconnected from the power source throughout the initial set-up, except when
specified in the instructions.
1. Insert an empty funnel into the funnel rails.
2. Place an empty decanter under the funnel.
3. On "B" Models, place the heater switch of the brewer in the "OFF" (lower) position and connect the brewer to
the power source.
4. Pour three pitchers of tap water into the screened area on top of the brewer. Allow approximately two minutes
between pitchers for water to flow into the tank. While the third pitcher of water is entering the tank, the tank
will fill to capacity and the excess will flow from the sprayhead, out of the funnel, and into the dispenser.
5. When the flow of water from the funnel stops, place the heater switch of the brewer in the "ON" (upper) position and wait approximately twenty minutes for the water in the tank to heat to the proper temperature. Some
water will drip from the funnel during this time; this is due to expansion and should not occur thereafter.
6. Pour one pitcher of tap water into the screened area on top of the brewer.
7. After water has stopped flowing from the funnel, allow the water in the tank to reheat to the proper temperature.
8. Empty the decanter. The brewer is now ready for use in accordance with the coffee brewing instructions.
Page 10860 061501
COFFEE BREWING
1.
2.
3.
4.
5.
6.
Insert a BUNN® filter into the funnel.
Pour the fresh coffee into the filter and level the bed of grounds by gently shaking.
Slide the funnel into the funnel rails.
Place an empty dispenser beneath the funnel.
Pour one pitcher of tap water into the screened area on top of the brewer.
When brewing is completed, simply discard the grounds and filter.
CLEANING
1. The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all
surfaces on Bunn-O-Matic equipment.
2. Check and clean the sprayhead. The sprayhead holes must always remain open.
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 of spring should be visible. Saw back and forth five or six
times.
NOTE – In hard water areas, this may need to be done daily. It will help prevent liming problems in the brewer
and takes less than a minute.
Page 10860 041797
TROUBLESHOOTING
A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems
encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic
Technical Service Department.
• Inspection, testing, 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
PROBLEM
PROBABLE CAUSE
REMEDY
Brew cycle will not start
1. No water
Check fill basin for obstructions.
2. No power or incorrect voltage
to the brewer
(A1) Be sure the brewer is connected to the power source.
(A2) Check the terminal block
for 100 volts on "B Series" brewers across the white and black
terminals.
Water is not hot
(B) Check circuit breakers or
fuses.
1. Tank Heater Switch (VP17B and
Early Model VP17)
Refer to Service - Tank Heater
Switch for testing procedures.
See page 14
2. Limit Thermostat
CAUTION - Do not eliminate or
bypass limit thermostat. Use only
replacement part #29329.1000
Refer to Service - Limit Thermostat for testing procedures. See
page 11
3. Control Thermostat
Refer to Service - Control Thermostat for testing procedures.
See page 10
Page 10860 061501
TROUBLESHOOTING (cont.)
PROBLEM
PROBABLE CAUSE
REMEDY
Water is not hot (cont.)
4. Tank Heater
Refer to Service - Tank Heater for
testing procedures. See page 13
Inconsistent beverage level in
dispenser
1. Syphon System
The brewer must be level or
slightly lower in front to syphon
properly.
2. Lime Build-up
CAUTION - Tank and tank components should be delimed regularly
depending on local water conditions. Excessive mineral build-up
on stainless steel surfaces can
initiate corrosive reactions resulting in serious leaks.
Inspect the tank assembly for
excessive lime deposits. Delime
as required.
1. Lime Build-up
CAUTION - Tank and tank components should be delimed regularly
depending on local water conditions. Excessive mineral build-up
on stainless steel surfaces can
initiate corrosive reactions resulting in serious leaks.
Inspect tank assembly for excessive lime deposits. Delime as
required.
2. Control Thermostat
Refer to Service - Control Thermostat for testing procedures.
See page 10
1. Syphon System
The brewer must be level or
slightly lower in front to syphon
properly.
2. Lime Build-up
CAUTION - Tank and tank components should be delimed regularly
depending on local water conditions. Excessive mineral build-up
on stainless steel surfaces can
initiate corrosive reactions resulting in serious leaks.
Inspect the tank assembly for
excessive lime deposits. Delime
as required.
Spitting or excessive steaming
Dripping from sprayhead
Page 10860 090800
TROUBLESHOOTING (cont.)
PROBLEM
PROBABLE CAUSE
REMEDY
Beverage overflows dispenser
1. Dispenser
The dispenser must be completely
empty before starting a brew
cycle.
Weak beverage
1. Filter Type
BUNN® paper filters must be used
for proper extraction.
2. Coffee Grind
A fine or drip grind must be used
for proper extraction.
3. Sprayhead
A six-hole stainless steel sprayhead must be used for proper
extraction.
4. Funnel Loading
The BUNN® paper filter must be
centered in the funnel and the
bed of ground leveled by gentle
shaking.
5. Water Temperature
Place an empty funnel on an empty
dispenser beneath the sprayhead.
Initiate a brew cycle and check the
water temperature immediately
below the sprayhead with a thermometer. The reading should not
be less than 195°F (91°C). Adjust
the control thermostat to increase
the water temperature. Replace if
necessary.
Dry coffee grounds remain in the
funnel
1. Funnel Loading
The BUNN® paper filter must be
centered in the funnel and the
bed of grounds leveled by gently
shaking.
Brewer is making unusal noises
1. Tank Heater
Remove and clean lime off the tank
heater. See page 13
Cool beverage serving temperature
1. ON/OFF Warmer Switch(s)
Refer to Service - ON/OFF Warmer
Switch for testing procedures. See
page 12
2. Warmer Element(s)
Refer to Service - Warmer Element for testing procedures. See
page 16
Page 10860 090800
SERVICE
Contents
This section provides procedures for testing and
replacing various major components used in this
brewer should service become necessary. Refer to
Troubleshooting for assistance in determining the
cause of any problem.
WARNING - Inspection, testing, and repair of electrical
equipment should be performed only by qualified service personnel. The brewer should be unplugged when
servicing, except when electrical tests are required and
the test procedure specifically states to plug
Control Thermostat............................................. 10
Limit Thermostat................................................. 11
ON/OFF Switch.................................................... 12
Tank Heater......................................................... 13
Tank Heater Switch............................................. 14
Warmer Elements............................................... 16
Wiring Diagrams................................................. 17
in the brewer.
COMPONENT ACCESS
WARNING - Disconnect the brewer from the power
source before the removal of any panel or the replacement of any component.
All components are accessible by the removal of
the top cover and front inspection panel and warmer
assemblies.
The top cover is attached with one #4-40 screw.
The front inspection panel is attached with four
#6-32 screws.
The warmer assembly is attached with three #4-40
screws.
FIG. 1 COMPONENT ACCESS
Page P1160.40
10860 090800
SERVICE (cont.)
7. Disconnect the brewer from the power source.
CONTROL THERMOSTAT
If voltage is present as described, reinstall the capillary
tube into the tank to the line 4.5" above the bulb, the
control thermostat is operating properly.
If voltage is not present as described, replace the
thermostat.
P1161.40
FIG. 2 CONTROL THERMOSTAT
Location:
The control thermostat is located inside the trunk
on the left side of the component bracket.
Test Procedures:
1. Disconnect the brewer from the power source.
2. With a voltmeter, check the voltage across the
blue wire on the control thermostat and the white
wire on the tank heater. Connect the brewer to the
power source. The indication must be:
a) 100 volts ac for two wire 100 volt models.
b) 120 volts ac for two wire 120 volt models.
3. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to the Wiring
Diagrams and check the brewer wiring harness.
Removal and Replacement:
1. Remove wires from control thermostat leads.
2. Remove the thermostat capillary bulb by firmly
pulling up on the capillary at the tank lid. This will
disengage the grommet from the tank lid.
3. Remove the one #8-32 screw securing the control thermostat to the component bracket in the
trunk.
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 the
tank lid and press the grommet firmly and evenly
so that the groove in the grommet fits into the tank
lid.
6. Carefully bend the capillary tube so that the tube
and bulb inside the tank are in the vertical position.
NOTE - The capillary tube must be clear of any electrical termination and not kinked.
7. Using one #8-32 screw secure the control thermostat to the component bracket inside the trunk.
8. Refer to Fig. 3 when reconnecting the wires.
9. Adjust the control thermostat as required.
4. Gently remove the capillary bulb and grommet
from the tank.
5. With a voltmeter, check the voltage across the black
wire of the control thermostat and the white wire
on the tank heater when the control thermostat is
turned "ON" (Fully clockwise). Connect the brewer
to the power source. The indication must be:
a) 100 volts ac for two wire 100 volt models.
b) 120 volts ac for two wire 120 volt models.
6. Voltage must not be present when the thermostat
is turned to the "OFF" position.
BLU to BLU Lead from
Limit Thermostat
BLK to BLK Lead from
Tank Heater
P1263
FIG. 3 CONTROL THERMOSTAT TERMINALS
Page 10
10860 090800
SERVICE (cont.)
Removal and Replacement:
1. Remove all wires from limit thermostat terminals.
2. Carefully slide the limit thermostat out from under
the retaining clip and remove limit thermostat.
3. Carefully slide the new limit thermostat into the
retaining clip.
4. Refer to Fig. 5 when reconnecting the wires.
LIMIT THERMOSTAT
FIG. 4 LIMIT THERMOSTAT
P1161.40
Location:
The limit thermostat is located inside the rear of
the hood on the tank lid.
BLU to BLU Lead from
Control Thermostat
BLK to Terminal Block or Tank Heater Switch
Test Procedures:
1. Disconnect the brewer from the power source.
2. Disconnect the blue and black wires from the limit
thermostat.
3. With an ohmmeter, check for continuity across
the limit thermostat terminals.
P1800
FIG. 5 LIMIT THERMOSTAT TERMINALS
If continuity is present as described, the limit thermostat
is operating properly.
If continuity is not present as described, replace the
limit thermostat.
Page 11
10860 061501
SERVICE (cont.)
ON/OFF WARMER SWITCH
If voltage is not present as described, refer to the Wiring
Diagrams and check the brewer wiring harness.
5. With the black wire removed, remove the wire from
the lower terminal.
6. Check for continuity across the center and lower
terminal with the switch in the "ON" (upper) position. Continuity must not be present when the
switch is in the "OFF" (lower) position.
If continuity is present as described, reconnect the
black wire to the center terminal and the remaining
wire to the lower terminal.
If continuity is not present as described, replace the
switch.
ONE LOWER WARMER
Removal and Replacement:
1. Remove the wires from the switch terminals.
2. Remove front 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 front end cap.
6. Refer to Fig. 7 when reconnecting the wires.
TWO WARMERS
THREE WARMERS
P1166.40
FIG. 6 ON/OFF WARMER SWITCHES
Location:
The ON/OFF warmer switch(es) are located on the
front of the hood.
WHI to Lower Warmer
Test Procedure:
1. Disconnect the brewer from the power source.
2. Viewing the switch from the back, remove the
white wire from the upper terminal and the black
wire from the center terminal.
3. With a voltmeter, check the voltage across the
white wire and the black wire. Connect the brewer
to the power source. The indication must be:
a) 100 volts ac for two wire 100 volt models.
b) 120 volts ac for two wire 120 volt models.
4. Disconnect the brewer from the power source.
Terminal #1 (See Chart
Below)
BLK to Terminal Block
or Tank Heater Switch
P1918
Connect wire to Terminal #1 as follows:
Lower Warmer...................................................... WHI/RED
One Upper Warmer (Rear)............................................. VIO
Two Upper or Side Warmers
(Front)....................................................................BRN/BLK
(Rear)............................................................................. VIO
FIG. 7 ON/OFF SWITCH TERMINALS
If voltage is present as described, reconnect the white
wire and proceed to #5.
Page 12
10860 061501
SERVICE (cont.)
TANK HEATER
P1161.40
FIG. 8 TANK HEATER
Location:
The tank heater is located inside the tank and
secured to the tank lid.
Test Procedures:
1. Disconnect the brewer from the power supply.
2. With a voltmeter, check the voltage across the black
and white wires on the tank heater. Connect the
brewer to the power source. The indication must
be:
a) 100 volts ac for two wire 100 volt models.
b) 120 volts ac for two wire 120 volt models.
3. Disconnect the brewer from the power source.
2. Disconnect the black wire on the limit thermostat
from the tank heater switch and disconnect the
blue wire from the limit thermostat to the control
thermostat.
3. Disconnect the black wire and the white wire from
the tank heater terminals.
4. Remove sprayhead and the hex nut securing the
sprayhead tube to the hood. Set aside for reassembly.
5. Remove the eight #8-32 nuts securing the tank lid
to the tank.
6. Remove the tank lid with limit thermostat, sprayhead tube and tank heater
7 Remove the two hex nuts securing the tank heater
to the tank lid. Remove tank heater with gaskets
and discard.
8. Install new tank heater with gaskets on the tank
lid and secure with two hex nuts.
9. Install tank lid with limit thermostat, sprayhead
tube 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 Limit
Thermostat and Control Thermostat sections in
this manual when reconnecting wires.
13.Install fill basin, secure with tank inlet fitting and
gasket.
14. Refer to Fig. 9 when reconnecting the tank
heater wires.
If voltage is present as described, proceed to #4
If voltage is not present as described, refer to the Wiring Diagrams and check wiring harness.
4. Disconnect the black wire and the white wire from
the tank heater terminals.
5. Check for continuity across the tank heater terminals.
If continuity is present as described, reconnect the
wires, the tank heater is operating properly.
If continuity is not present as described, replace the
tank heater.
NOTE- If the tank heater remains unable to heat, remove
and inspect heater for cracks in the sheath.
Removal and Replacement:
1. Remove the tank inlet fitting securing the fill basin
to the tank lid, remove fill basin and tank inlet
gasket. Set all three parts aside for reassembly.
Page 13
WHI to WHI Lead on
Power Cord (120V
Models)
WHI to Terminal Block
(White Insert) (100 V
Models)
BLK to Control
Thermostat
FIG. 9 TANK HEATER TERMINALS
P1163
10860 090800
SERVICE (cont.)
If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to the Wiring
Diagrams and check the brewer wiring harness.
TANK HEATER SWITCH (VP17B and early model
VP17)
5. Check for continuity between the black wire removed from the limit thermostat and the black insert
on the terminal block, with the tank heater switch
in the "ON" (upper) position. Continuity should not
be present in the "OFF" (lower) position.
VP17 MODELS (Early Models)
VP17B MODELS
If continuity is present as described, the tank heater
switch is operating properly.
If continuity is not present as described, replace the
tank heater switch.
P1161.40
P1319.40
FIG. 10 TANK HEATER SWITCH
Location:
On Early VP17 Models the tank heater switch is
located on the rear of the brewer on the upper left side
of the trunk.
On VP17B Models the tank heater switch is located
on left side of the control panel.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Disconnect the black wire from the limit thermostat.
3. With a voltmeter, and with the tank heater switch in
the "ON" (upper) position check the voltage between
the black wire removed from the limit thermostat
and the white wire on the tank heater. Connect the
brewer to the power source. The indication must
be:
a) 100 volts ac on two wire 100 volt models.
b) 120 volts ac on two wire 120 volt models.
4. Disconnect the brewer from the power source.
Removal and Replacement: (VP17)
1. Remove the tank inlet fitting securing fill basin to
the tank lid. Remove fill basin and gasket. Set all
three parts aside for reassembly.
2. Remove sprayhead and hex nut securing sprayhead
tube to the hood. Set aside for reassembly.
3. Disconnect the wires on the limit thermostat and
the tank heater.
4. Gently pull the thermostat sensor and grommet
from the tank lid.
5. Insert a tube to the bottom of the tank and syphon
ALL of the water out.
6. Gently reinstall the thermostat sensor and grommet in the tank lid.
7. Remove the two #8-32 screws securing the tank
assembly to the hood.
8. Lift tank and components out as an assembly and
set aside for reassembly.
9. Disconnect the two black wires from the tank heater
switch.
10.Remove the plastic facenut, hex facenut and the
switch indicator/guard bracket that secures tank
heater switch to the brewer. Remove switch and
discard.
11.Insert new tank heater switch through the hole in
the upper left rear of the trunk and secure with
switch indicator/guard bracket, hex facenut and
plastic facenut.
12.Reconnect the two black wires the tank heater
switch terminals.
Page 14
10860 061501
SERVICE (cont.)
TANK HEATER SWITCH (cont.)
13.Set tank assembly inside the hood on mounting
brackets and secure with two #8-32 screws.
14.Reconnect the wires to the limit thermostat, tank
heater and the control thermostat. Refer to Limit
Thermostat, Tank Heater and Control Thermostat sections in this manual when reconnecting
wires.
15.Secure the sprayhead tube to the hood using hex
nut.
16.Install sprayhead.
17.Install fill basin, inlet gasket and secure to tank lid
with tank inlet fitting.
18.Refer to Fig. 11 when reconnecting the wires.
BLK to Limit Thermostat
BLK to Terminal
Block (Black Insert)
P1135
FIG. 11 TANK HEATER SWITCH TERMINALS
Removal and Replacement: (VP17B)
1. Remove the tank inlet fitting securing fill basin to
the tank lid. Remove fill basin and gasket. Set all
three parts aside for reassembly.
2. Disconnect the two black wires from the tank heater
switch.
3. Remove the plastic facenut, hex facenut and the
switch indicator/guard bracket that secures tank
heater switch to the brewer. Remove switch and
discard.
4. Insert new tank heater switch through the hole
in the lower left of the control panel and secure
with swtich indicator/guard bracket, hex facenut
and plastic facenut.
5. Reconnect the two black wires the to the tank
heater switch terminals.
6. Install fill basin, inlet gasket and secure to tank lid
with tank inlet fitting.
7. Refer to Fig. 11 when reconnecting the wires.
Page 15
10860 090800
SERVICE (cont.)
WARMER ELEMENT(S)
If continuity is not present as described, replace the
warmer element.
Removal and Replacement:
1. Remove the three #4-40 screws securing the
warmer assembly to the brewer.
2. Lift the warmer assembly from the brewer.
3. Disconnect the two wires from the warmer 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 terminals.
7. Securely install warmer assembly on the brewer.
8. Refer to the illustration below when reconnecting
the wires.
P1164
Location:
The warmer element(s) is located under the warmer
plate.
Test Procedures:
1. Disconnect the brewer from the power source.
2. With a voltmeter, check voltage across the white
wire to the power cord and the white/red, brown/
black or violet wire to the "ON/OFF" switch, with
the "ON/OFF" switch in the "ON" (upper) position.
The indication must be:
a) 100 volts ac for two wire 100 volt models.
b) 120 volts ac for two wire 120 volt models.
3. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #4.
If voltage is not present as described, refer to Wiring
Diagrams and check brewer wiring harness.
WHI/RED to ON/OFF Switch (One Lower Warmer)
BRN/BLK to ON/OFF Switch (to Front Warmer or
Side Warmer)
VIO to ON/OFF Switch (Top Rear Warmer or Rear
Side Warmer)
WHI to WHI Lead on Power Cord (120V Brewers)
WHI to Terminal Block (100V Brewers)
FIG. 13 WARMER ELEMENT TERMINALS
P1167
4. Check the continuity across the two terminals on
the warmer element.
If continuity is present as described, reconnect the
white wire and white/red, brown/black or violet wires
on the warmer element.
Page 16
10860 121101
SCHEMATIC WIRING DIAGRAM
VP17-1/-2/-3
GRN
L1
LIMIT
THERMOSTAT
BLK
N
SW. & THERMOSTAT
BLU
BLK
TANK HEATER
WHI
1320W
50W
WHI
ON/OFF SWITCH
BLK
WHI
"KEEP WARM" HEATER
WHI
WHI/RED
WHI
LOWER WARMER
VP17-2 TOP WARMER ASSY
BLK
VIO
WHI
P3
WHI P1 WHI
VIO
REAR WARMER
ON/OFF SWITCH
VP17-3 2 SIDE WARMERS
BLK
BRN/BLK
WHI
NOT USED ON LATE MODELS
WITH SIDE WARMERS
BRN/BLK
FRONT WARMER
ON/OFF SWITCH
BLK
VIO
WHI
WHI
VIO
REAR WARMER
ON/OFF SWITCH
120 VOLTS AC
2 WIRE + GND
SINGLE PHASE
WHI
10862.0003H 09/06 ©1997 BUNN-O-MATIC CORPORATION
Page 17
10860 061501
SCHEMATIC WIRING DIAGRAM
VP17-1/-2/-3
L1
READY INDICATOR
BLU
HEATER
SWITCH
BLK
BLK
LIMIT
THERMOSTAT
BLK
SW. & THERMOSTAT
BLU
BLK
TANK HEATER
WHI
"KEEP WARM" HEATER
WHI/RED
BLK
WHI
WHI
VIO
P3
WHI P1 WHI
VIO
REAR WARMER
ON/OFF SWITCH
2 TOP or SIDE WARMERS
BRN/BLK
WHI
P2 BRN/BLK
FRONT WARMER
ON/OFF SWITCH
BLK
WHI
LOWER WARMER
1 TOP WARMER
BLK
WHI
WHI
ON/OFF SWITCH
BLK
N
GRN
BLK
VIO
P3
WHI P1 WHI
WHI
VIO
REAR WARMER
ON/OFF SWITCH
AUXILIARY OUTLET (NOT AVAILABLE ON VP17-3)
BLK
120 VOLTS AC 2 WIRE
SINGLE PHASE
WHI
GRN
200 WATT MAXIMUM
10862.0000B 9/00 ©1995 BUNN-O-MATIC CORPORATION
Page 18
10860 061501
SCHEMATIC WIRING DIAGRAM
VP17B-1/-2/-3
L1
READY INDICATOR
BLU
HEATER
SWITCH
BLK
BLK
LIMIT
THERMOSTAT
BLK
BLK
SW. & THERMOSTAT
BLU
BLK
TANK HEATER
WHI
WHI
WHI
ON/OFF SWITCH
BLK
N
GRN
"KEEP WARM" HEATER
WHI
WHI/RED
WHI
LOWER WARMER
1 TOP WARMER
WHI
BLK
VIO
P3
WHI P1 WHI
VIO
REAR WARMER
ON/OFF SWITCH
2 TOP or SIDE WARMERS
WHI
NOT USED ON LATE MODELS
WITH SIDE WARMERS
BLK
BRN/BLK P2 BRN/BLK
FRONT WARMER
ON/OFF SWITCH
BLK
VIO
P3
WHI P1 WHI
WHI
VIO
REAR WARMER
ON/OFF SWITCH
AUXILIARY OUTLET (NOT AVAILABLE ON VP17-3)
WHI
BLK
100 VOLTS AC
2 WIRE + GND
SINGLE PHASE
GRN
200 WATT MAXIMUM
(EARLY MODELS ONLY)
10862.0002G 09/06 ©1997 BUNN-O-MATIC CORPORATION
Page 19
10860 061501
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