Bunn Liquid Autofill Kits User manual

BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: [phone] FAX: [phone]
37570.0002A 08/11 ©2011 Bunn-O-Matic Corporation
ULTRA-1 & 2
INSTRUCTIONS FOR INSTALLING
LIQUID AUTOFILL KITS
INTRODUCTION
These instructions are for installing the Liquid Autofill Kits on Autofill ready ULTRA-1 and ULTRA-2 cold drink dispensers.
INSTRUCTIONS
1. Unplug machine from power source before removing any panels.
2. Drain both hoppers and clean the machine if needed before proceeding.
5. With a standard screwdriver and a
hammer, punch out the hole needed
for the level probe. Repeat this step
for all barrels.
4. Remove both motor covers and locate
.50" round knock out in top right area
ofplasticdrummount.Discardscrews.
3. Remove hoppers, drip tray, both side
panels and front panel.
(Continued)
KIT CONTENTS ULT-2 ULT-1
A. 37567.0000 1* - Circuit Board, ULTRA 2 Auto-Fill
B. 37962.0001 1* - Wire Harness, AF Kit
C. 36329.0000 2 2 Tie, Cable-Nylon BLK 4.04"
D. 43120.xxxx 2 1 Cover Assy, Motor LAF-BLK
E. 38055.0003 2* 1 Probe Assy, LAF
F. 34362.0003 4* 2 Bushing .156" ID x .490" OD x .12" Flg
G. 00973.0000 4* 2 Nut, KEPS #6-32
H. 43131.0000 2 1 Bracket, Motor Cover Support
I. 43145.0000 2 1 Bracket, Motor Cover Mounting
J. 00970.0000 8 4 Nut, KEPS #8-32
K. 02308.0000 4 2 Screw, Pan Head, Slotted w/serr. #8-32 x .38"
L. 38129.0017 4 2 Hose, Braided .25 ID x 11.0" Lg
M. 21275.0006 8 4 Clamp .406/.504" Dia.
N. 01317.0000 4 2 Screw, Truss Head, Slotted #8-32 x .50"
O. 44194.0000 - 1 Wire Harness (Not Auto-fill Ready)
P. 44195.0000 - 1 Wire Harness (Auto-fill Ready)
* Not included in all kits.

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10. Remove top nut off of grounding stud
in the base of the machine, add on the
greengroundingwirefromthenewhar-
ness and reinstall the nut onto the stud.
Make sure that all the other grounding
wires remain on the ground stud.
9. Plug wire harness (B) into Auto Fill
board connector and route wires in
front of drain tube and back into the
machine.
8. Reinstall the main board into the
machine using the original mounting
screws.
11. Route Pink and Tan wires up to level
probes. To ease wire harness installa-
tion, remove both auger motors.
Note: valve connection wire colors –
right is red and white, left is blue and
white.
37570.2 081811
(Continued)
INSTRUCTIONS (Continued)
7. Connect Auto Fill board to J-12 on the
main board. Be sure to snap the plastic
stand off’s completely into the main
board.
6. Remove 4 screws holding in the main
circuit board.
On ULTRA-1 Models, proceed to Step 12.
For ULTRA-1 Models not Auto-fill ready:
12. Disconnect main wiring harness from
circuit board. Insert pink wire from
Harness (Q) into terminal #6.
13. Insert red wire from Harness (Q) into
terminal #18.
NOTE: The pin terminal must be oriented
correctly to be inserted fully. After inserting
these connections, pull lightly on the wires
to insure they do not come out.
• Route new harness back into machine
along with the main harness.
14. Locate white wire on new harness with
piggy-back style spade connection.
Remove white wire from refrigerant
valve and connect piggy-back connec-
tor from new harness onto refrigerant
valve. Reconnect white wire from
main harness onto the new piggy-back
connector. Route remaining portion of
new harness toward the back of the
machine.

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17. Install level probe assembly into hole
and secure with nuts provided (G).
18. Position wire and connector away from
metal bracket as shown. Attach using
nuts provided. Pink is the right probe
and Tan is the left probe. Reinstall mo-
tors using original screws.
INSTRUCTIONS (Continued)
For ULTRA-1 Models that are Auto-fill ready:
15. Locate unused white and red auto-fill
valve wire connections tied in a bundle
on the main wiring harness. Carefully
cut wire tie to free the bundle.
16. Connect white and red wires from the
new harness (R) to white and red wires
repectively on the main harness. Route
the new harness toward the back of the
machine.
37570.2 081811
19. Remove the two lower motor bracket
screws and align new bracket in place.
Attach with new screws (K ) provided.
20. Install larger metal bracket as shown.
Route light connection wires above
plastic boss to keep from being pinched
under the new mounting bracket. Route
torque sensor wires away to keep from
being pinched under metal mounting
bracketSecurewith4nuts(J) provided.
21. Connect harness to each new motor
cover assembly with Auto Fill, then
mount motor cover to machine with
new screws (N ) provided.
Hint: Align the motor cover in at the
top, then snap the bottom in place.
(Continued)

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24. Reinstall front and side panels.
23. Connect syrup supply lines from BIB
system. Connect water lines from
source. NOTE: Connection points for
these are marked on the rear of the
motor cover.
INSTRUCTIONS (Continued)
22. Using supplied cable tie (C), attach the
new harness to the main harness to
keep away from the condenser fan.
• Supply water pressure requirement is
50 – 80 psi.
Syrup supply is to be 30 – 80 psi.
Plumbing & Water Pressure Requirements
(Continued)
28. Installcustomer suppliedpump system.
Turn on pump system andwater supply.
Check all tubing connections for leaks.
37570.2 081811
26. Route the tubes from the motor cover
together and connect to hopper fitting.
25. Install hoppers onto machine and
slide probes onto hoppers into slots
provided.
27. Slide hopper fitting into place in the
slot on the hopper.

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INSTRUCTIONS (Continued)
37570.2 081811
29. Apply power to machine and turn on water and syrup supply. Refer to the Programming section of this manual in the Refill
Threshold section to check refill for proper operation.
30. At the threshold screen, with no product in the hopper, confirm the number on the left (top) of the screen is around 250. The
number on the right of the screen is factory set to 155. The factory set point should not need any adjustment.
31. After confirming that both hoppers are reading about 250 for the threshold, proceed to the next screen to test the refill circuit.
32. At the test refill screen, select yes.
33. The Activate Valve screen will allow you to test the pumping and refill circuit. Press and hold the ULTRA button to activate the left
refill system. Confirm that the left side is filling when the ULTRA button is pressed. Release the ULTRA button to stop the filling
process. Repeat this process for the right side by pressing the ICE button to test. Check for leaks at the hoses while pumping
system is running.
34. Run each side until water and product are flowing freely.
35. Take a sample from each side (directly from the tubes going into the hopper) to check for proper brix ratio.
Set up and calibration:
36. Make adjustments to the brix/ratio by turning the screw/valve adjuster on the
water side at the top of the motor cover (at right). Turning the screw clockwise will
decrease the water flow. Counter-clockwise will increase the water flow. The flow
rate on the syrup side is not adjustable.
37. Once the testing is complete, exit the programming menu.
38. The auto fill feature can be turned on by pressing the auger button for each side until
the display reads “AUGER REFILL ON”.
NOTE: Some models also include a “Delay Refill” option. This feature is used to dose in
small amounts of new product while delaying between doses. This can help the already
frozen product from becoming deluted and not ready to serve. These delay and fill times
are to be determined and set based on each application as desired by the end user.