Bunn Coffee Maker VPR-APS Service Manual
VPR-VPS
SERIES
SERVICE & REPAIR MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
41667.0000A 10/08 ©2008 Bunn-O-Matic Corporation
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) All equipment other than as specified below: 2 years parts and 1 year labor.
2) Electronic circuit and/or control boards: parts and labor for 3 years.
3) Compressors on refrigeration equipment: 5 years parts and 1 year labor.
4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis:
parts and labor for 3 years or 30,000 pounds of coffee, whichever comes first.
These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by
it will be commercially free of defects in material and workmanship existing at the time of manufacture and
appearing within the applicable warranty period. This warranty does not apply to any equipment, component or
part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect,
alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is
conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone
at (217) 529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227; 2) if requested by
BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior
authorization from BUNN that the defective equipment is under warranty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR
ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN
are not authorized to make modifications to this warranty or to make additional warranties that are binding on
BUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and
should not be relied upon.
If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its
exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts
and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective
components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace
the equipment or refund the purchase price for the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF
THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S
SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.
In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales,
loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute
equipment, facilities or services, or any other special, incidental or consequential damages.
BrewWISE, BrewLOGIC, BrewWIZARD, BUNN Gourmet Ice, BUNN Pour-O-Matic, BUNN, Bunn-OMatic, Bunn-OMatic, BUNNlink, BUNNserve, BUNN Espress, DBC, Dr. Brew, Dual, EasyClear, EasyGard, Easy Pour, FlavorGard,
Gourmet Ice, Gourmet Juice, High Intensity, IMIX, Infusion Series, Quality Beverage Equipment Worldwide,
The Mark of Quality in Beverage Equipment Worldwide, My Café, PowerLogic, Safety-Fresh, Scale-Pro, Single,
Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, System III, ThermoFresh, 392, AutoPOD,
AXIOM, Beverage Profit Calculator, Beverage Bar Creator, BrewMETER, BUNNSERVE, BUNNsource, Coffee At Its
Best, Cool Froth, Digital Brewer Control, Intellisteam, Nothing Brews Like a BUNN, Pouring Profits, Pulse Wave,
Signature Series, Silver Series, Smart Heat, Tea At Its Best, The Horizontal Red Line, Titan, Ultra, are either
trademarks or registered trademarks of Bunn-O-Matic Corporation.
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41667 100908
INTRODUCTION
This equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It can be
easily configured for 120V 15 amp, 120/208V 20 amp or 120/240V 20 amp. The brewer may have
a hot water faucet for allied beverage use. It is only for indoor use on a sturdy counter or shelf.
CONTENTS
Warranty ......................................................................................................... 2
Contents .......................................................................................................... 3
Troubleshooting .............................................................................................. 4
Component Access ......................................................................................... 7
Control Thermostat ......................................................................................... 8
Limit Thermostat (VPR - VPS) ...................................................................... 10
ON/OFF Switch (Warmers) ............................................................................ 11
Tank Heater .................................................................................................. 12
Thermal Cut-Off (VPRA - VPSA) ................................................................... 13
Warmer Elements.......................................................................................... 14
Wiring Diagrams ........................................................................................... 15
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41667 102708
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,andrepairofelectricalequipmentshouldbeperformedonlybyqualiedserviceperson-
nel.
• Thisbrewerisheatedatalltimes.Keepawayfromcombustibles.
WARNING – • Exerciseextremecautionwhenservicingelectricalequipment.
• Unplugthebrewerwhenservicing,exceptwhenelectricaltestsarespecied.
• Followrecommendedserviceprocedures
• Replaceallprotectiveshieldsorsafetynotices
PROBLEM
Water is not hot
Spitting or excessive steaming
PROBABLE CAUSE
1. Limit Thermostat or Thermal
Cut-Off
CAUTION - Do not eliminate or
bypass limit thermostat/thermal
cut-off. Use only BOM replacement part.
2. Control Thermostat
3. Tank Heater
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.
REMEDY
Refer to Service - Limit Thermostat or Thermal Cut-Off for
testing procedures. See page 10
or 13
Refer to Service - Control Thermostat for testing procedures.
See page 9
Refer to Service - Tank Heater for
testing procedures. See page 12
Inspect the tank assembly for
excessive lime deposits. Delime
as required.
2. Control Thermostat
Page 4
Refer to Service - Control Thermostat for testing procedures.
Inspect the tank assembly for
excessive lime deposits. Delime
as required.
41667 102708
TROUBLESHOOTING (cont.)
PROBLEM
Dripping from sprayhead
Beverage overflows dispenser
Weak beverage
PROBABLE CAUSE
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.
1. Dispenser
1. Filter Type
2. Coffee Grind
REMEDY
Excessive lime deposits. Delime
as required.
The dispenser must be completely empty before starting a
brew cycle.
BUNN® paper filters must be used
for proper extraction.
A fine or drip grind must be used
for proper extraction.
3. Sprayhead
4. Funnel Loading
5. Water Temperature
A six-hole stainless steel sprayhead must be used for proper
extraction.
The BUNN® paper filter must be
centered in the funnel and the
bed of grounds leveled by gentle
shaking.
Place an empty funnel on an empty
dispenser beneath the sprayhead.
Pour-in a pitcher of tap water and
check the water temperature immediately below the sprayhead
with a thermometer. The reading
should not be less than 195°F.
Adjust the control thermostat to
increase the water temperature.
Replace if necessary.
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TROUBLESHOOTING (cont.)
PROBLEM
Dry coffee grounds remain in
the funnel
Brewer is making unusal noises
Cool beverage serving temperature
PROBABLE CAUSE
1. Funnel Loading
2. Sprayhead plugged
1. Tank Heater
1. ON/OFF Warmer Switch
2. Warmer Element(s)
REMEDY
The BUNN® paper filter must be
centered in the funnel and the
bed of grounds leveled by gently
shaking.
Clean/verify that sprayhead holes
are not plugged.
Clean lime off the tank heater.
Refer to Service - ON/OFF
Warmer Switch for testing procedures.
Refer to Service - Warmer
Element(s) for testing procedures.
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41667 102708
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