Bunn SLCC-6 Installation & Operating Manual

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SLCC-6

INSTALLATION & OPERATING MANUAL

BUNN-O-MATIC CORPORATION

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.

POST OFFICE BOX 3227

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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.

BUNN and SSLC-6 are either trademarks or registered trademarks of Bunn-O-Matic Corporation.

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INTRODUCTION

This equipment dispenses hot beverages or soups on demand from powdered product. It is indoor use only on a sturdy counter or shelf.

TABLE OF CONTENTS

Introduction ............................................................................................................................................3

User Notices ...........................................................................................................................................4

Initial Set-up ...........................................................................................................................................5

Electrical Requirements ..........................................................................................................................5

Electrical Hook-up ...................................................................................................................................5

Plumbing Requirements .........................................................................................................................5

Plumbing Hook-up ..................................................................................................................................5

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

Installing Pump Tubing ........................................................................................................................... 8

Initial Fill & Heat ......................................................................................................................................9

Liquid Level Control ................................................................................................................................9

Rinse Alarm Feature ................................................................................................................................9

Programming The Dispenser ................................................................................................................10

Display Mode ..................................................................................................................................10

Program Mode ................................................................................................................................ 13

Priming The Concentrate Lines .............................................................................................................16

Draining The Hot Water Tank ................................................................................................................17

Operating The Dispenser .......................................................................................................................17

Carafe Dispense Mode ....................................................................................................................17

Hot Water Mode ..............................................................................................................................17

Cleaning And Preventive Maintenance ..................................................................................................18

Daily Rinsing ...................................................................................................................................18

Daily Parts Washing ........................................................................................................................18

Weekly Sanitizing ............................................................................................................................18

Weekly Parts Washing ....................................................................................................................19

Air Filter Cleaning ............................................................................................................................19

Replacing The Pump Tubing .................................................................................................................20

Calibrating The Dispenser ..................................................................................................................... 21

Troubleshooting Guide ..........................................................................................................................23

Field Calibration of the Concentrate Pumps ..........................................................................................25

Calibrating of the Concentrate Pumps .............................................................................................25

Calibration the Dispenser Flow Rate ................................................................................................26

Field Calibrating the Empty Product Warning ........................................................................................26

Field Adjustment of Powder Hoppers ..............................................................................................27

Electrical Wiring Schematics .................................................................................................................28

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This equipment must be installed to comply with the Basic Plumbing Code of the Building Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA). For models installed outside the U.S.A., comply with the applicable Plumbing /SanitationCode.

USER NOTICES

PLACE

CUP

HERE

RINSE ALARM

If all LED’S on control panel are flashing, and LED display shows “RINSE”, a rinse function is required to clear.

1. Place minimum 32 ounce container under dispense nozzles.

2. Place top switch in “RINSE” position.

3. Press any dispense switch on front door. Rinse will automatically dispense for 15 seconds, then stop

4. Place top switch in “NORMAL” position.

5. Discard rinse water and close door.

ALARMA DE ENJUAGUE

Si destellan todos los LED del panel de control y en la pantalla de LED aparece “RINSE” (ENJUAGAR), se requiere aplicar la función de enjuague para borrar la alarma.

1. Coloque un recipiente de 1 l (32 onzas) como mínimo debajo de las toberas de distribución

2. Coloque el conmutador superior en la posición “RINSE”.

3. Pulse cualquier interruptor de distribución de la puerta delantera. Se distribuye automáticamente el enjuague durante 15 segundos y luego se detiene.

4. Coloque el conmutador superior en la posición “NORMAL”.

5. Deseche el agua de enjuague y cierre la puerta.

Center container under dispense point. Keep hands away. All nozzles dispense HOT LIQUID. To stop rinse, press STOP button on door.

Centre el recipiente debajo del punto de distribución. Mantenga alejadas las manos. Todas las toberas distribuyen LÍQUIDO CALIENTE. Para detener el enjuague, pulse el botón STOP de la puerta.

ADVERTENCIA

The notices on this dispenser should be kept in good condition. Replace unreadable or damaged labels.

00656.0000

00986.0000

00870.0000

37881.0000

11646.0002

39474.0000

39591.0000

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INITIAL SET-UP

1. Apply the four non-skid pads from the parts box to the bottom of the legs.

2. Remove the drip tray assembly and drip tray bracket from the parts box.

3. Place a set of key holes in the drip tray bracket over the lower two screws in the panel below the hopper access door; push down gently and tighten screws.

ELECTRICAL REQUIREMENTS

CAUTION - The dispenser must be disconnected from the power source until speciﬁed in Electrical Hook-Up.

The dispenser can be wired to a 120V up to 240V ac, 50 or 60Hz power source, 2 wire with ground.

Refer to the dispenser’s dataplate for exact voltage requirements.

ELECTRICAL HOOK-UP

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. Connect the dispenser to the power source.

4. Place the main power switch in the "ON" position.

5. If plumbing is to be hooked-up later be sure the dispenser is disconnected from the power source. If plumb-

ing has been hooked-up, the dispenser is ready for Initial Fill & Heat.

PLUMBING REQUIREMENTS

This dispenser must be connected to a cold water system with operating pressure between 20 and 100 psi (138 and 690 kPa). This water source must be capable of producing a minimum ﬂow rate of 4.5 ﬂ. oz. (133.1 ml) per second. A shut-off valve should be installed in the line before the dispenser. Install a regulator in the line when pressure is greater than 100 psi (690 kPa) to reduce it to 50 psi (345 kPa). The water inlet ﬁtting is .25" (9.52

mm) ﬂare. NOTE - At least 18 inches (457 mm) of an FDA approved ﬂexible beverage tubing, such as reinforced braided

polyethylene or silicone, before the dispenser will facilitate movement to clean the countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the dispenser. The size and shape of the hole made in the supply line by this type of device may restrict water ﬂow.

This equipment must be installed to comply with the Basic Plumbing Code of the Building Ofﬁcials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA). For models installed outside the U.S.A., you must comply with the applicable Plumbing/Sanitation Code for your area.

NOTE - If a backﬂow prevented is required by code, a shock arrestor should be installed between backﬂow preventer

and dispenser. Installing the shock arrestor as close to the dispenser as possible will provide the best results.

PLUMBING HOOK-UP

1. Flush the water line and securely attach it to the ﬂare ﬁtting on the bottom of the dispenser.

2. Turn-on the water supply.

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OPERATING CONTROLS AND INTERFACE

1. Carafe Button: Momentary pushed to select carafe size dispense of coffee.

2. Stop Button: Momentary pushed to stop dispensing.

3. Hot Water Button: Push and Hold to dispense hot water.

4. Decaf Button: Momentarily pushed to select Decaffeinated coffee.

5. DBL SHOT Button: Momentarily pushed to select double shot of espresso, or extra strength coffee or coffee base specialty beverages.

6. Cup Size Buttons: Momentarily pushed to select beverage size to dispense.

7. Dispense Buttons: Momentarily pushed to dispense selected beverage.

8. Decaf reﬁll LED: Illuminates when left (Decaf) concentrate can needs replaced.

9. Coffee (Regular) reﬁll LED: Illuminates when right (Regular) concentrate can needs replaced.

10. Main Power Switch: Removes AC power to tank heater and control circuits.

11. Function Selector Switch: Allows the user to select different dispensing functions (Located behind the splash guard panel)

a. Rinse: Dispenses hot water only- Flushes the powder and coffee mixing chambers and dispense lines

and tips.

b. Prime: Dispenses concentrates only – Primes concentrate pumps. c. Normal: Normal dispense mode – Dispenses mixed product.

12. Mode Selector Switch: Allows the user to select different operating modes.

a. Run: Normal operating position. b. Night: Anti-pilfering mode that disables dispensing, but keeps heater and chiller operational. WARNING – The NIGHT Mode does not remove AC power from the dispenser. Disconnect power source before servicing the dispenser. c. Program: Enables programming and set up of the dispenser.

13. Programming Switches: Used in conjunction with the LED display to program and calibrate the dispenser to customer speciﬁc requirements.

a. Menu: used to scroll to the next menu screen. b. (+): used to increase the display value. c. (-): used to decrease the display value.

14. LED Display: Displays programming menus and fault messages.

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OPERATING CONTROLS (Continued)

8 4 1 5 2 6 3 6

14 11 12

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INSTALLING PUMP TUBING

1. Loosen the thumbscrews securing the tubing retainer plates to the pump bodies and set the retainer plates aside.

2. Depress the tension screws and remove them from the notch in the pump body, releasing the spring tension on the pump bands.

3. Apply lubricant (BUNN-O-Matic part no. M2531.0001) to the middle section of the new pump tubing.

4. Insert the free end of the pump tubes over the outlet ﬁttings in the bottom of the chiller cabinet as far as possible.

5. Carefully wrap the new tubing around the rotors, making sure that the elbows end up parallel to the rotor face.

6. Depress the tension screws and insert it in the notch in the pump body, reapplying spring tension on the pump bands.

7. Replace the tubing retainer plates and tighten the thumbscrews.

8. Open the product containers and insert the stainless steel drawtubes into the containers.

Note: Replacement Tube Kits can be purchased from BUNN-O-MATIC. Order part no. 39329.1000

9. Seat pump tubes into notches on product shelf drip pan as shown.

10. Prime the pumps. Refer to Priming the Concentrate Lines section.

Thumbscrew

Tension Screw

Remove Retaining Plate Release Spring Tension

Tension Screw

Tube Clamp

Install New Tubing Completed Installation

2.0”

Lubricate between arrows

Lubricate New Tube

2.0”

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INITIAL FILL & HEAT

1. Turn on the water supply and connect the dispenser to the power source.

2. Water will automatically ﬂow into the tank to the proper level and then shut-off. This will take less than ten

minutes.

3. A tank full of cold water will take approximately ﬁfty minutes for the water to heat at 120 volts, approximately

15 minutes at 240 volts.

4. Fill the hoppers with the dry product to be dispensed. Hot chocolate in the left hopper, powder milk product

in the right hopper.

5. The LED display on the control panel behind the door splash panel will alternately display the tank water

temperature and the cold shoe temperature.

LIQUID LEVEL CONTROL

The system automatically maintains the hot water tank’s level by energizing the reﬁll solenoid when the water level drops below the liquid level probe. If the system has not successfully reﬁlled in 15 minutes, a reﬁll error occurs. When a reﬁll error occurs, the reﬁll solenoid is de-energized. Once the cause of the reﬁll error has been investigated and cured, the system can be reset by both disconnecting (for at least 5 seconds) and then reconnecting the power to the machine.

RINSE ALARM FEATURE

Periodic rinsing of the mix chambers and dispense tips is essential for proper maintenance and optimum performance of the dispenser. The dispenser is shipped from the factory with the rinse timer enabled. The rinse timer automatically keeps track of the time since the dispenser was last run through a rinse sequence. If the dispenser detects that a rinse sequence has not been run for the desired time, all LEDs’ on the membrane switch on the front door will ﬂash, and "RINSE" will be displayed on the LED display behind the door splash panel.

Rinse Procedure:

1. Open the front door and place the Normal/Program/Rinse switch in the RINSE position.

2. Place a large container under the dispense nozzle. Press any dispense button on the front door. The LED

display above the programming buttons will begin counting down from 15. The rinse will terminate when the display reaches “0”.

3. Return the Normal/Program/Rinse switch to the NORMAL position, and close the front door.

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PROGRAMMING THE DISPENSER

MENU (-) (+)

Open the dispenser door to access the digital programming module with LED display. Two basic modes are available to the operator: Display Mode and Program Mode. To enter the Display Mode, Set the RUN/NIGHT/PROGRAM Switch to the RUN position. To enter the Program Mode, Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM position.

Display Mode: Used to view the current set-up values. Use the MENU button to scroll to the next display. NOTE: The display blanks out after two minutes of inactivity. Press the MENU button to activate the display.

LCD DISPLAY DISPLAY MODE DESCRIPTION

Home View

1 9 0

1 8 0

1 5 5

Tank Temperature

Set Tank Ready Temperature

Reﬁll Threshold

Alternates between Tank Temperature and Cold Shoe Temperature

Displays target Tank Temperature (°F)

Displays target Tank Lockout Temperature (°F)

Display tank Reﬁll Threshold

8 8

8 0

Left hopper motor

Right hopper motor

Displays default power setting for Left Hopper Motor

Displays default power setting for Right Hopper Motor

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PROGRAMMING (Continued)

MENU (-) (+)

LCD DISPLAY DISPLAY MODE DESCRIPTION

3 8

1 0

Decaf Dispense Ration

Regular Dispense Ration

Decaf Espresso Ration

Regular Espresso Ration

Displays Left Coffee Dispense Ration (XXX:1)

Displays Right Coffee Dispense Ration (XXX:1)

Displays Left Espresso Dispense Ration (XXX:1)

Displays Right Espresso Dispense Ration (XXX:1)

Empty Product Threshold

4 5 0

11.0

16.0

Small Cup Dispense Time

Large Cup Dispense Time

Displays Empty Product Threhold

Displays Small Cup Dispense time

Displays Large Cup Dispense time

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MENU (-) (+)

PROGRAMMING (Continued)

MENU (-) (+)

LCD DISPLAY DISPLAY MODE DESCRIPTION

Decanter Dispense Time

3 4

1.8

0.5

2 4

Powder Whipper Delay Off

Powder Auger Motor Delay on

Rinse Required time

Displays Decanter Dispense time

Displays Powder Whipper Motor Delay Off time

Displays Powder Auger Motor Delay On time

Displays hours for Rinse Required

Small Espresso Dispense time

3.0

6.0

Large Espresso Dispense time

"DBL SHOT" disable

Displays Small Espresso Dispense time

Displays Large Espresso Dispense time

Displays enable/disable selection of "DBL SHOT"

Displays Software Version # - Exits to home View After 3 sec.

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PROGRAMMING (Continued)

MENU (-) (+)

Program Mode: Used to change or enter new set-up values. To enter the Program Mode, Set the RUN/NIGHT/PROGRAM Switch to the PROGRAM position, the unit will display “__PPP” to indicate it is in the Program Mode. Use the MENU switch to scroll to the next display. Use the Increase (+) and Decrease (-) switch to adjust the values.

LCD DISPLAY PROGRAM MODE DESCRIPTION

Tank Temperature

1 9 0

1 8 0

1 5 5

r u n

Set Tank Ready Temperature

Reﬁll Threshold

Left hopper motor

Default = 190°F

Default = 180°F

Set tank reﬁll threshold Default = 155

Press any beverage dispense switch, left hopper motor will run for 10 seconds. Refer to Field Calibration of

Powder Hoppers

8 8

r u n

8 0

Left hopper motor

Right hopper motor

Set left hopper auger power level Default = 88

Press any beverage dispense switch, right hopper motor will run for 10 seconds. Refer to Field Calibration of

Powder Hoppers

Set right hopper auger power level Default = 80

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PROGRAMMING (Continued)

MENU (-) (+)

LCD DISPLAY PROGRAM MODE DESCRIPTION

Decaf Dispense Ration

3 8

1 0

Regular Dispense Ration

Decaf Espresso Ration

Regular Espresso Ration

Set Decaf Coffee Ratio Default = 38:1

Set Regular Coffee Ratio Default = 38:1

Set Left Espresso Ration Default = 10:1

Set Right Espresso Ration Default = 10:1

Empty Product Threshold

4 5 0

1 0

3 4

Small Cup Dispense Time

Large Cup Dispense Time

Decanter Dispense Time

Set Conductance Threshold Default = 450

Set Small Cup Dispense time Default=

11.0 seconds

Set Large Cup Dispense time Default=

16.0 seconds

Set Decanter Dispense time Default=

34.0 seconds

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PROGRAMMING (Continued)

MENU (-) (+)

LCD DISPLAY PROGRAM MODE DESCRIPTION

Powder Whipper Delay Off

2 4

Powder Auger Motor Delay on

Rinse Alarm Timer

Small Espresso Dispense time

Set Powder Whipper Motor Delay Off time Default = 1.8 seconds

Set Powder Auger Motor Delay On time Default = .5 seconds

Displays hours for Rinse Alarm Default = 24 hours

Set Small Espresso Dispense time. Default = 3.0 seconds

Large Espresso Dispense time

EnA

0 XX

"DBL SHOT" disable

Set Large Espresso Dispense time. Default = 6.0 seconds

Displays enable/disable selection of "DBL SHOT" Default = Enable

Displays Software Version # - Exits to Home View After 3 sec.

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PRIMING THE CONCENTRATE LINES

1. Open the dispenser door.

2. Select Prime on the Function Selector Switch and Run on the Mode Selector Switch.

3. Close the dispenser door.

4. Place a container under the dispense tip.

5. Activate the appropriate dispense button, (DECAF or COFFEE) until concentrate ﬂows from the dispense nozzle. Priming may take 10 to 20 seconds.

6. Open the dispenser door; select Normal on the Function Selector Switch.

Note: Concentrate may continue to drip out of dispense tip. The user may wish to Rinse (refer to Rinsing) the dispenser to clean out the remaining concentrate.

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DRAINING THE HOT WATER TANK

CAUTION - The dispenser must be disconnected from the power source throughout these steps

1. Disconnect the dispenser from the power source.

2. Open front door and place Main Power Switch in the OFF position and let the water in the tank cool before

draining.

3. Shut off and disconnect the incoming water supply.

4. Remove the drip tray and access panels below the door.

5. Pull the clamped end of the silicone tube out of the dispenser and direct it into a drain or a container large

enough to hold the volume of water in the tank, 4.0 gallons.

6. Make certain the shut off clamp is locked tightly on the tube, and then remove the snap type clamp and

plug from end of tube.

7. Carefully release the shut off clamp to let the water drain from the tank.

NOTE - The dispenser must be reﬁlled using the INITIAL FILL & HEAT steps before reconnecting to the power source.

OPERATING THE DISPENSER

Set the Function Selector Switch to NORMAL and the Mode Selector Switch to RUN

1. Simply place a cup on the drip tray beneath the center dispense nozzle.

2. Press the DECAF button if a decaffeinated beverage is desired.

3. Press the DBL SHOT button if an extra strength coffee based beverage is desired.

4. Select desired beverage size, small or large cup.

5. Press the button to dispense the desired beverage. Dispensing is portion controlled, and will automatically

stop when correct amount of beverage has been dispensed.

6. Pressing the STOP button in the center of the membrane switch will stop dispensing.

CARAFE DISPENSE MODE. Refer to Programming Functions to set up this volume

1. Place the appropriate size container beneath the dispensing tip.

2. Press the button with the decanter icon, and then press either DECAF or the COFFEE button to begin dis-

pensing.

3. The dispensing can be stopped at any time by pressing the STOP button.

HOT WATER MODE

1. Place a container under the dispense tip.

2. Press and hold the HOT WATER button to dispense hot water.

3. Remove the container.

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CLEANING & PREVENTATIVE MAINTENANCE

General Cleaning and Sanitizing Procedures Note: The BUNN¨ SLCC-6 dispenser incorporates a “user select-

able” rinse reminder feature, which ﬂashes the LED’s on the front panel when it is time to rinse.

Daily: RINSING

1. Open the front door and place the Normal/Program/Rinse switch in the RINSE position.

2. Place a ½ gal (2 liter) container under the dispense nozzle. Press any dispense button on the front door. The LED display above the programming switches will begin counting down from “15”. The rinse will terminate when the display reaches “0”.

3. Return the Normal/Program/Rinse switch to the NORMAL position, and close the front door.

Daily: PARTS WASHING

1. Remove and wash the drip tray and drip tray cover in a mild detergent solution. Rinse thoroughly.

2. Wipe the splash panel, dispense nozzles, door, and cabinet with a clean damp cloth.

Weekly: SANITIZING

1. Open the dispenser door and set the Function Switch to Prime and the Mode Selector Switch to Run.

2. Remove stainless steel drawtube from the product container and set the product container aside.

3. Place the stainless steel drawtube into a one-quart (1 liter) container of warm soapy tap water 140°F (60°C).

4. Place an empty container under dispense nozzle area and depress the corresponding dispense button (COF- FEE or DECAF) until the clean soapy water is dispensed from the dispense nozzle.

5. Repeat steps 3 and 4 with warm tap water 140°F (60°C) to rinse the soapy water from the pump tubing. Continue depressing the dispense switch until the water is clear, and no soapy water is being dispensed.

6. Prepare one-quart (1 liter) of sanitizing solution with at least 100 ppm of available chlorine in 120°F (48.9°C) water.

7. Repeat steps 3 and 4 with the sanitizing solution. Once sanitizing solution is being dispensed, release the dispense switch and allow the solution to sit for 5 minutes.

8. After the sanitizer has set in the lines for 5 minutes, repeat step 5 with warm tap water to ﬂush out the sanitizing solution.

9. Wipe the outside of the draw tube with a clean, damp cloth, and insert the drawtube into the product container and return it to the cabinet.

10. Repeat steps 1 through 9 for other dispense head.

11. Clean mixing/whipping chamber components, hoses and nozzles per Weekly: Parts Washing and Sanitiz- ing procedure.

12. Rinse machine per the Daily: Rinsing procedure.

13. Select Normal on the Function Switch and Run on the Mode Selector Switch.

14. Dispense coffee, Regular or Decaf, until the concentrate and water mixture appears at the dispense nozzle. Continue to dispense at least 12 ounce (355 ml) of concentrate/water mixture and discard.

Air Filter Cleaning Monthly cleaning of the air ﬁlter is recommended. Severe conditions may require more frequent cleaning.

1. From right side, reach under machine and snap ﬁlter retainer off of the fan guard.

2. Remove ﬁlter, rinse with water, pat dry, and replace in retainer

3. Snap ﬁlter and retainer assembly back onto fan guard.

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Weekly: Parts Washing and Sanitizing

1. Remove elbows from

both hoppers.

5. Remove frother disk from

shaft by pulling straight out.

2. Remove elbows from mixing chambers, twisting slightly to help release.

6. Rotate tab on mixing chamber base further counter clock wise, and remover from shaft by pulling straight out.

NOTE: Insure O-ring and shaft seal are in place during re-assembly.

3. Rotate tab at bottom of mixing chamber bases counter clock wise to release base.

7. Remove dispense hoses from dispense nozzle assembly.

4. Remove mixing chamber and steam collector by pulling straight out.

8. Clean all parts removed in warm soapy water. Use Bunn P/N 33685.0000 cleaning brush provided to clean bores and oriﬁces. Rinse in cold water.

9. Prepare one-gallon (3.8 liter) of sanitizing solution with at least 100 ppm of available chlorine in 120°F (48.9°C) water. Soak all cleaned parts in sanitizing solution for 5 minutes, then rinse thor-

10. Rinse cleaning brush, dip in sanitizing solution, and brush the bore of each of four dispense nozzles.

NOTE: Repeat this procedure for each nozzle sepa-

rately. oughly in cold water, and dry.

11. When reassembling parts, be sure to align arrow on frother disk with ﬂat on whipper motor shaft, and rotate tab on whipper base clock wise to the vertical position to lock mixing chamber.

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REPLACING THE PUMP TUBING

The pumps and tubing used in the dispenser are designed to give maximum performance and long life. However, the tubes are a wear item and must be replaced periodically. How long the tube last is dependent on usage and properties of the concentrate. Excessive wear will reduce the output of the pumps resulting in a weak mixed beverage. Bunn-O-Matic recommends replacing the Pump Tubing a minimum of once every 6 months or sooner if warranted. Refer to the Tube Replacement Instruction inside the Cabinet door.

Note: To avoid concentrate spills, rinse the pump tubing with warm tap water prior to removing the tubes, (Refer to steps 1 - 4 of the Weekly Sanitizing instructions).

1. Loosen the thumbscrews securing the tubing retainer plates to the pump bodies and set the retainer plates aside.

2. Depress the tension screws and remove them from the notch in the pump body, releasing the spring tension on the pump bands. Remove and discard pump tube assemblies.