Bunn RL00006929 User Manual

OL & RL

(S/N RL00006929 & up)

INSTALLATION & OPERATING GUIDE

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

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

To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and

manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-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 thermal servers 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 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.

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.

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.

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CONTENTS

Introduction ................................................................2

User Notices ...............................................................3

Electrical Requirements ..............................................4

Plumbing Requirements .............................................4

Initial Set-Up ...............................................................5

Operating Controls ......................................................6

Coffee Brewing ............................................................7

Cleaning ......................................................................7

Troubleshooting ..........................................................8

Service ........................................................................12

Wiring Diagrams .........................................................26

INTRODUCTION

This equipment will brew a half-gallon batch of coffee into an awaiting decanter at the press of a button. The OL has two and the RL has ﬁve warmers to keep the beverage at the right temperature, on the RL one of which is capable of heating water to boiling. The brewer is only for indoor use on a sturdy counter or shelf.

USER NOTICES

Carefully read and follow all notices on the equipment and in this manual. They were written for your protection. All notices on the equipment should be kept in good condition. Replace any unreadable or damaged labels.

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

00831.0000

As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of the Food and Drug Administration (FDA), this equipment must be installed with adequate backflow prevention to comply with federal, state and local codes. For models installed outside the U.S.A., you must comply with the applicable Plumbing /Sanitation Code for your area.

00658.0000

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.

00656.0001

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37881.0000

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ELECTRICAL REQUIREMENTS

CAUTION - Do not connect the brewer to the power source until speciﬁed in Initial Set-Up.

L2 RED

200, 230 or

L1 BLACK

240V A.C.

MODELS OL15 & 20 require 2-wire, grounded service rated 120 volts ac, 15 or 20 amp respectively, single phase, 60 Hz.

MODELS OL35 & RL35 require 3-wire, grounded service rated 120/208 or 120/240 volts ac, 20 amp, single phase, 60 Hz.

CE REQUIREMENTS

• This appliance must be installed in locations where

it can be overseen by trained personnel.

• For proper operation, this appliance must be installed

where the temperature is between 5°C to 35°C.

• Appliance shall not be tilted more than 10° for safe

operation.

• An electrician must provide electrical service as speciﬁed in conformance with all local and national codes.

• This appliance must not be cleaned by water jet.

• This appliance is not intended for use by persons

(including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given instructions concerning use of this appliance by a person responsible for its safety.

• Children should be supervised to ensure they do not

play with the appliance.

• If the power cord is ever damaged, it must be replaced

by the manufacturer or authorized service personnel with a special cord available from the manufacturer or its authorized service personnel in order to avoid a hazard.

• Machine must not be immersed for cleaning.

MODELS OLA, RLA, OL35B & RL35B require 2-wire, ground-

ed service rated 240 volts ac or 200 volts ac, 20 amp single phase, 50 Hz.

MODEL OL25B requires 2-wire, grounded service rated 100 volts ac, 20 amp single phase, 50 Hz.

Electrical Hook-Up

Model OL15 has an attached cordset. Models OL20, OL35, & RL35, proceed as follows:

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. Remove the top panel and rotate the control thermostat knob fully counterclockwise to the “OFF” position and replace the panel.

4. Remove the rear panel, feed the cord through the strain relief, and connect it to the terminal block.

5. Connect the brewer to the power source and verify the voltage at the terminal block before proceeding. Replace the rear panel.

6. If plumbing is to be hooked-up later be sure the brewer is disconnected from the power source. If Plumbing has been hooked-up, the brewer is ready for Initial Set-Up.

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PLUMBING REQUIREMENTS

This brewer must be connected to a cold water system with operating pressure between 20 and 90 psi from a 1/2” or larger supply line. A shut-off valve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi to reduce it to 50 psi. The water inlet ﬁtting is 1/4” ﬂare.

NOTE - Bunn-O-Matic recommends 1/4” copper tubing for installations of less than 25 feet and 3/8” for more than 25 feet from the 1/2” water supply line. A tight coil of copper tubing in the water line will facilitate moving the brewer to clean the counter top. Bunn-O-Matic does not recommend the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type of device may restrict water ﬂow.

Plumbing Hook-Up

Model OL15 has an attached water strainer, proceed

to step 2.

Models OL20, OL35, & RL35, proceed as follows:

1. Remove the rear panel and bottom pan. Run the long piece of tubing from the strainer (supplied) under the brewer and attach it to the water inlet ﬁtting on the bottom bracket. Reinstall the bottom pan and rear panel.

2. Flush the water line and securely attach it to the 1/4” ﬂare ﬁtting on the strainer.

3. Turn on the water supply.

P1478

As directed in the International Plumbing Code of the International Code Council and the Food Code Manual of the Food and Drug Administration (FDA), this equipment must be installed with adequate backﬂow prevention to comply with federal, state and local codes. For models installed outside the U.S.A., you must comply with the applicable Plumbing /Sanitation Code for your area.

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INITIAL SETUP

CAUTION - The brewer must be disconnected from the power source throughout the initial setup, except when

speciﬁed in the instructions.

1. Remove the top panel.

2. Rotate the control thermostat knob fully counterclockwise to the “OFF” position and replace the panel.

3. Insert an empty funnel into the funnel rails.

4. Place a decanter containing a small amount of water on the warmer beneath the funnel.

5. Connect the brewer to the power source, place the On/Off brew station warmer switch the upper position, and momentarily press the start switch. Water will begin ﬂowing into the tank. When water stops ﬂowing into the tank, initiate a second and a third brew cycle. During this third brew cycle the tank will ﬁll to its capacity and the excess will ﬂow from the sprayhead, out of the funnel, and into the decanter.

NOTE - The On/Off brew station warmer switch must be in the upper position to initiate and complete a brew cycle.

6. Place the On/Off brew station warmer switch in the lower position.

7. Disconnect the brewer from the power source.

8. Remove the top panel.

9. Rotate the control thermostat knob fully clockwise to the “ON” position and replace the panel.

10. Connect the brewer to the power source 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.

11. Place an empty decanter under the funnel.

12. Place the On/Off brew station warmer switch in the upper position and momentarily press the start switch. Empty the decanter after water has stopped ﬂowing from the funnel.

13. Allow the water in the tank to reheat to the proper temperature.

14. Place an empty decanter on the warmer and press the start switch. Check the water volume in the decanter after water has stopped ﬂowing from the funnel. It should be 64 ounces.

15. If not, disconnect the brewer from the power source and remove the top panel.

16. Add or remove washers to the ﬂoat on the level switch as required. Adding washers increases the volume, removing washers decreases it. Replace the top panel, connect the brewer to the power source, start, and measure another brew cycle.

17. Repeat steps 13-16 until 64 oz water volume is achieved.

P1478

P1712

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OPERATING CONTROLS

A. On/Off Brew Station Warmer Switch

Placing the switch in the upper position supplies power to the brew station warmer and enables brewing. Placing the switch in the lower position cuts power to the brew station warmer and stops brewing. Stopping a brew cycle after it has been started will not stop the ﬂow of water into the funnel until the tank syphons down to its proper level.

NOTE - The On/Off brew station warmer switch must be in the upper position to initiate and complete a brew cycle.

B. On/Off Brew Station Warmer Indicator Lamp

Glows whenever the On/Off brew station warmer switch is in the upper position showing that the warmer is

on and that the automatic brew cycle can be started.

C. Start Switch

Starts a brew cycle when the On/Off brew station warmer switch is in the upper position.

MODEL OL

MODEL RL

D E

A B C

P1712

D. Upper Warmer Switch

Placing the switch in the upper position supplies power to the upper warmer. Placing the switch in the lower position cuts power to the upper warmer.

E. Upper Warmer Indicator Lamp

Glows whenever the upper warmer switch is in the upper position showing that the warmer is on.

F. Left Rear Warmer Rotary Switch

Rotating the knob to the “ON” position supplies power to the left rear warmer. Rotating the knob to the “OFF” position cuts power to the left rear warmer.

G. Left Front Warmer Rotary Switch

Rotating the knob to the “ON” position supplies power to the left front warmer. Rotating the knob to the “OFF” position cuts power to the left front warmer.

H. Right Front Warmer Rotary Switch

Rotating the knob to the “ON” position supplies power to the right front warmer. Rotating the knob to the “OFF” position cuts power to the right front warmer.

P1713

F G A B C H I

I. Right Rear Warmer Rotary Switch

Rotating the knob to the “ON” position supplies power to the right rear warmer. Rotating the knob to the “OFF” position cuts power to the right rear warmer.

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COFFEE BREWING

Start each brew cycle with an empty, clean, half-gallon decanter.

1. Insert a BUNN® ﬁlter into the funnel.

2. Pour the fresh coffee into the ﬁlter and level the bed of grounds by gently shaking.

3. Slide the funnel into the funnel rails.

4. Place the On/Off brew station warmer switch in the upper position.

5. Momentarily press the start switch.

6. 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.

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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 qualied service personnel.

• All electric components have 120 volt ac voltage on their terminals. Shorting of terminals or the application of external

voltages may result in equipment failure.

• Intermittent operation of electronic equipment is unlikely. Component 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 ttings 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 unless disconnected from the power source. Keep away from combustibles.

WARNING

• Exercise extreme caution when servicing electrical equipment.

• Disconnect the brewer from the power source when servicing, except when electrical tests are specied.

• Follow recommended service procedures

• Replace all protective shields or safety notices

Problem

Equipment will not operate.

Brew cycle will not start.

Probable Cause

1. No power or incorrect voltage

1. No water

2. Water Strainer

3. Water Level Switch and Overﬂow Safety Switch

Remedy

(A) Connect the brewer to the power source.

(B) Check the terminal block for the proper voltages.

Check plumbing and shut-off valves.

(A) Direction of ﬂow arrow must be pointing towards brewer.

(B) Remove the strainer and check for obstructions. Clear or replace.

Refer to Service - Water Level Switch and Overﬂow Safety Switch for testing procedures. See page 23.

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TROUBLESHOOTING (cont.)

Problem

Brew cycle will not start. (cont.)

Water ﬂows into ﬁll basin continuously (On/Off brew station warmer switch “OFF”).

Water ﬂows into ﬁll basin continuously (On/Off brew station warmer switch “ON”).

Probable Cause

4. On/Off Brew Station Warmer Switch

5. Start Switch

6. Relay

7. Solenoid Valve

1. Solenoid Valve

1. Start Switch

Remedy

Refer to Service - On/Off Brew Station Warmer Switch for testing procedures. See page 15.

Refer to Service - Start Switch for testing procedures. See page 17.

Refer to Service - Relay for testing procedures. See page 21.

Refer to Service - Solenoid Valve for testing procedures. See page 20.

Refer to Service - Start Switch for testing procedures. See page 17.

Water is not hot.

Decanter warmer is not hot.

1. Limit Thermostat

CAUTION

Do not eliminate or bypass limit thermostat. Use only B.O.M. replacement part #29329.1000

2. Control Thermostat

3. Tank Heater

1. Warmer Switches

Refer to Service - Limit Thermostat for testing procedures. See page

19.

Refer to Service - Control Thermostat for testing procedures. See page 13.

Refer to Service - Tank Heater for testing procedures. See page 22.

(A) The Warmer Switch(es) must be in the “ON” position for the warmer to operate.

(B) Refer to Service - Warmer Switch(es) for testing procedures. See pages 15 & 16.

2. Decanter Warmers

Page 10

Refer to Service - Warmers for testing procedures. See page 14.

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