BUNN | JDF-4S - Annual Cleaning Checklist

Annually: Check water level in ice bath. Top off if needed.

Annually: Replace Pump Tubing

1. Open dispenser door.

2. Remove all product containers and place them in a refrigerated (35-40 degrees F [1.6-4.4 degrees C]) environment. Disconnect all connections to ambient products from the bottle adapter.

3. Rinse all dispense stations using steps outlined in “DAILY RINSE PROCEDURE”.

4. Disconnect dispenser from power source.

5. Remove the dispense platform cover.

6. Disconnect the dispense platform water line(s) from the supply line inside the refrigerated cabinet and disconnect the wiring connection(s) from the cabinet receptacle(s).

7. Remove the mounting screw(s) securing the dispense platform(s) to the cabinet .

8. Pull the dispense platform(s) completely out of the cabinet and place it on a flat work surface.

9. Close the dispenser door.

10. Remove the 4 screws securing the pump head.

11. Gently pull the pump head apart.

12. Gently pull the pump tube from around the pump’s rotor.

13. Release the clamps securing the old pump tubing to the plastic elbows.

14. Pull the plastic elbows from the old pump tubing, and discard the old pump tubing.

15. Insert the plastic elbows into the new pump tubing and secure it with the clamps.

16. Gently wrap the new pump tubing around the pump’s rotor.

17. Reassemble the pump housing onto the platform assembly.

18. Repeat steps 10 through 17 for the remaining pump(s).

19. Replace the dispense platform(s) into the refrigerated cabinet, making sure to reconnect all electrical and water connections.

20. Replace the dispense platform cover.

21. Turn power on to dispenser.

22 Install containers of rinse water, run each station and check for leaks. Repair leaks as necessary.

23. Replace product shelf and product containers. Reconnect any connections to ambient product containers.

24. Prime the pumps as described in “PRIMING” in the Initial Fill Section.

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

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

7. Repeat steps 1 through 5 for the remaining dispense positions
8. Place the Program switch back into the OFF position.

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. 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. 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.

: 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.

Annually: Check water level in ice bath. Top off if needed.

Annually: Replace Pump Tubing

1. Open dispenser door.

2. Remove all product containers and place them in a refrigerated (35-40 degrees F [1.6-4.4 degrees C]) environment. Disconnect all connections to ambient products from the bottle adapter.

3. Rinse all dispense stations using steps outlined in “DAILY RINSE PROCEDURE”.

4. Disconnect dispenser from power source.

5. Remove the dispense platform cover.

6. Disconnect the dispense platform water line(s) from the supply line inside the refrigerated cabinet and disconnect the wiring connection(s) from the cabinet receptacle(s).

7. Remove the mounting screw(s) securing the dispense platform(s) to the cabinet .

8. Pull the dispense platform(s) completely out of the cabinet and place it on a flat work surface.

9. Close the dispenser door.

10. Remove the 4 screws securing the pump head.

11. Gently pull the pump head apart.

12. Gently pull the pump tube from around the pump’s rotor.

13. Release the clamps securing the old pump tubing to the plastic elbows.

14. Pull the plastic elbows from the old pump tubing, and discard the old pump tubing.

15. Insert the plastic elbows into the new pump tubing and secure it with the clamps.

16. Gently wrap the new pump tubing around the pump’s rotor.

17. Reassemble the pump housing onto the platform assembly.

18. Repeat steps 10 through 17 for the remaining pump(s).

19. Replace the dispense platform(s) into the refrigerated cabinet, making sure to reconnect all electrical and water connections.

20. Replace the dispense platform cover.

21. Turn power on to dispenser.

22 Install containers of rinse water, run each station and check for leaks. Repair leaks as necessary.

23. Replace product shelf and product containers. Reconnect any connections to ambient product containers.

24. Prime the pumps as described in “PRIMING” in the Initial Fill Section.

: 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.

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

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

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

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

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. 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. 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.

: 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.