Troubleshooting guide

JDF Silver Series Training Manual
8
Calibration Process
The following process needs to be completed for all dispense stations.
Step 1: Identify the desired mix ratio for the product being used, (usually found on the product container), and mark
the product ratio on the total dispense ratio chart.
Step 2:Conductwaterowtesttodetermineknownvolumeofwaterdispensed.
Step 3: Perform total dispense test to determine total volume of water and product dispensed.
Step 4: Use the total dispense ratio chart to determine if total dispense matches the ratio target.
Step 5: Make pump speed adjustment if total dispense does not match desired ratio target.
Theproceduresforconductingawaterowtest,andtotaldispensetestareexplainedindetailbelowalongwiththe
procedure for making a pump speed adjustment.
Water Flow Testing and Adjustment
Tools Required:
• 64 ounce pitcher (BUNN P/N: 04238.0000) or graduated measuring cup (BUNN P/N: 33095.0000).
Step 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.
Step 2: Press and release the desired “Product Dispense Switch” three times. (On
Portion Control models, use the plus/stop switches)
Step 3: The selected position will dispense water (no concentrate) only for 3 seconds.
Step 4: Measure the water dispensed.
Step5:Adjustthewaterowratewitha1/4allenwrench,(clockwisetoincreaseow
 rate;counterclockwisetodecreaseowrate)tothecorrespondingproductmix
ratio as follows:
*Maximumowratemaybelessdependingonthewaterpressuresupplyateachlocation.
Note:Informationforspecic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 %.
Step6:Repeatsteps1through5asnecessaryuntilthecorrectwaterowrateisachievedandrecordthetotal
dispensed water for each dispense station.
Step 7: Repeat steps 1 through 5 for the remaining dispense positions.
Step 8: Place the Program switch back into the OFF position.
Mix Ratio Adjust water flow rate to: Product Brix %
(water + concentrate)
2+1 *3.75 fl. oz (111 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%
*4.0 fl. oz (118 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 2.25 - 3.0 fl. oz (66.5 - 89 ml) As Required -
per 3-second test