BUNN 1SH Soft Heat Stand Instruction

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

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

1. Air pots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers and The rmofresh 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 specified 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 analysis – parts and labor for 4 years or 40,000 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, non periodic cleaning and descaling, equipment failures related to poor water quality, damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but not limited to user replaceable parts such as seals and gaskets. 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.
T HE 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. 392, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, Velocity Brew, A Partner You Can Count On, Air Brew, Air Infusion, Beverage Bar Creator, Beverage Profit Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brewer Control, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Tea At Its Best, The Horizontal Red Line, Ultra are either trademarks or registered trademarks of Bunn-O-Matic Corporation.

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 – 240 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 contact or a loose connection at a terminal or crimp.

WARNING

• Exercise extreme caution when servicing electrical equipment.
• Disconnect power source when servicing, except when electrical tests are specified.
• Follow recommended service procedures.
• Replace all protective shields or safety notices.

Problem

|

Probable Cause

|

Remedy

---|---|---
Server will not heat| 1. No power or incorrect voltage.| Be sure the stand is connected to the power source.
2. Circuit breaker| A) Check and reset if necessary
B) Refer to Service – Circuit breaker for test procedures. See page 4
3. Receptacle contact| Clean or replace. See page 5
4. Transformer| Refer to Service – Transformer for test procedures. See page 7
5. Rectifier| Refer to Service – Rectifier for test procedures. See page 6

SERVICE

This section provides procedures for testing and replacing various major components used in these stands 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 stands should be unplugged when servicing, except when electrical tests are required and the test procedure specifically states to connect the stand to the power source.

COMPONENT ACCESS
WARNING – Disconnect the stand 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 receptacle cover and the stand cover.

The receptacle cover is attached with four #6-32 truss head locking screws.
The stand cover is attached with four #6-32 truss head locking screws.

CIRCUIT BREAKER

Location
The circuit breaker(s) is located on the upper part of the receptacle bracket just above the spring contact receptacle(s) assembly

Test Procedures

1. Disconnect the stand from the power source.
2. Remove the wires from the circuit breaker.
3. Check for continuity between the circuit breaker terminals. Continuity must be present between the terminals.
   If continuity is present as described the circuit breaker is functioning properly.
   If continuity is not present as described, press reset button and repeat step

   3, if continuity is not present as described, replace the circuit breaker.

Removal and Replacement:

1. Remove the wires from the circuit breaker.
2. Compress the clips on the back side of the receptacle bracket and gently push the circuit breaker through the opening in the receptacle bracket.
3. Push the new circuit breaker into the opening in the receptacle bracket until the clips snap into position.
4. Reconnect the wires to the circuit breaker.
5. Refer to Fig. 3 when reconnecting the wires.

1. Remove the wires from the circuit breaker.
2. Compress the clips on the back side of the receptacle bracket and gently push the circuit breaker through the opening in the receptacle bracket.
3. Push the new circuit breaker into the opening in the receptacle bracket until the clips snap into position.
4. Reconnect the wires to the circuit breaker.
5. Refer to Fig. 3 when reconnecting the wires.

RECEPTACLE ASSEMBLY (SPRING CONTACT)

Location:
The receptacle assembly is located on the lower front of the receptacle bracket just below the circuit breaker.

Test Procedures:

1. Clean or replace spring contacts.
   Removal and Replacement:

2. Disconnect the stand from the power source.

3. Disconnect the wires from the receptacle assembly.

4. Remove the two #6-32 flat head screws securing the receptacle to the receptacle bracket.

5. Remove and discard receptacle.

6. Install new receptacle in the receptacle bracket and secure with two #6-32 flat head screws..

7. Refer to Fig. 5 and reconnect the wires.
   

RECTIFIER

Location:
The rectifier(s) is located inside on the right side of the stand housing just to the right of the transformer for 1SH Stand and on the right and left side of the stand housing for 2SH Stand.
Test Procedures:

1. Disconnect the stand from the power source.
2. Remove the red wire and the black wire from the rectifier.
3. Check the voltage across the (+) and (-) terminals on the rectifier with a voltmeter. Connect the stand to the power source. The indication must be 24 volts dc.
4. Disconnect the stand from the power source. If voltage is present as described, the rectifier is operating properly. If voltage is not present as described, refer to the stand wiring diagrams and check the stand wiring harness.
   

Removal and Replacement:

1. Disconnect the wires from the rectifier.
2. Remove the #6-32 truss head screw securing the rectifier to the stand housing.
3. Remove the rectifier and discard.
4. Install new rectifier in the stand housing and secure with a #6-32 truss head screw.
5. Refer to Fig 7 and reconnect the wires.
6. 

TRANSFORMER

Location :
The transformer(s) is located in the stand housing on the base plate.
Test Procedures:

1. Disconnect the stand from the power source.

2. Disconnect the black wire from terminal #5 and the white or red wire from terminal # 6.

3. Check the voltage across the black and white or red wire with a voltmeter. Connect the stand to the power supply. The indication must be:
   a.) 100 volts ac for two wire 100 volt models.
   b.) 120 volts ac for two wire 120 volt models.
   c.) 200 to 240 volts ac for two wire 200 or 240 volt models.

4. Disconnect the stand from the power supply.
   If voltage is present as described reconnect the wires and proceed to #5.
   If voltage is not present as described, refer to the wiring diagrams and check the stand wiring harness.

5. Disconnet the blue/black wires from terminals #7 and #12 on the transformer.

6. Check the voltage across terminal #7 and #12 of the transformer with a voltmeter. Connect the stand to the power source. The indication must be 24 volts ac.
   If voltage is present as described the transformer is operating properly.
   If voltage is not present as described, replace the transformer
   

Removal and Replacement:

1. Disconnect all the wires from the transformer.
2. Remove the four #6-32 screws securing the transformer and mounting strap to the stand housing.
3. Remove transformer and discard.
4. Install new transformer in the stand housing securing with four #6-32 screws and mounting strap.
5. Refer to Fig. 9 when reconnecting the wires.
   

SCHEMATIC WIRING DIAGRAM 1 SH STAND

100 or 120 VOLTS AC
2 WIRE + GND
SINGLE PHASE

SCHEMATIC WIRING DIAGRAM 2 SH STAND

SCHEMATIC WIRING DIAGRAM 1 SH STAND, 230V CE

SERVICE & REPAIR MANUAL
BUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: 217-529-6601 FAX: 217-529-6644

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