Bunn JDF-4S User Manual download pdf (Page 14)

FIG 17 Adjusting Water Flow

Using 1/4" allen wrench

Mix Ratio Adjust water ﬂow rate to: Product Brix %

(water + concentrate)

2+1 *3.0 ﬂ. oz (89 ml) Prune Juice 16.0%

per 3-second test Other *

Orange Juice 11.8%

4+1 Pineapple Juice 12.8%

Cranberry Fruit Cocktail 14.0%

*3.0 ﬂ. oz (89 ml) Grapefruit Juice 10.6%

per 3-second test Lemonade

5+1 Apple Juice 12.0%

Fruit Punch

Grape Juice 13.0%

3+1 through 7+1 Other *

Above 7+1 *4.0 ﬂ. oz (118 ml) Other *

per 3-second test

High Viscosity Juice 3.0 ﬂ. oz (89 ml) As Required -

per 3-second test

*Maximum ﬂow rate may be less depending on the water pressure supply at each location.

Note: Information for speciﬁc products listed in this table is to be used for reference only. Consult the product label for

exact mix ratio and/or brix %. See product label for target brix %.

Water Flow Testing and Adjustment

NOTE: Purge all dispense stations to remove air from water line before making initial

adjustments.

1. Place a graduated measuring cup or the large chamber of the empty brixing cup

(BUNN-O-MATIC part number 33095.0000) under the appropriate dispense nozzle.

Place the Program switch in the ON position.

2. Press and release the desired “Product Dispense Switch” three times.(On Portion

Control models, use the plus/stop switches)

3. The selected position will dispense water (no concentrate) only for 3 seconds.

4. Measure the water dispensed. Suggested target is 3 ounces (1 ounce per second

ﬂow rate.

5. Adjust the water ﬂow rate Fig 17, (clockwise to increase ﬂow rate; counterclockwise

to decrease ﬂow rate) to the corresponding product mix ratio. Chart below provides

general brix instructions.

ADJUSTMENT & OPTIONAL SETTINGS

P3586

6. Repeat steps 1 through 5 as necessary until the correct water ﬂow rate is achieved.

7. Repeat steps 1 through 5 for the remaining dispense positions.

8. Place the Program switch back into the OFF position.

Pump Speed Adjustment

1. Disconnect the dispenser from the power source.

2. Remove the drip tray.

3. Remove the two screws securing the splash panel and remove the splash panel

4. Locate the adjustment knobs on the circuit board.

NOTE: Start with the adjustment dial in the nine o'clock position.

5. Turn the adjustment knobs clockwise to increase speed and counterclockwise to decrease speed.

NOTE: If splashing occurs while dispensing, reduce water ﬂow rate. Then re-adjust pump speed to achieve proper ratio/

brix target.

6. The knob positions directly correspond to dispense station locations.

NOTE: Some 2S models have 4 adjustment knobs on the circuit board. For these models use the two left most knobs to

make pump speed adjustments. Left most being station #1 (left side dispense) and left center being station #2 (right side

dispense).

7. Reinstall the splash panel and drip tray and reconnect the dispenser to the power source.

44744.2 110813

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Bunn JDF-4S User Manual Page 14

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