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Water Screw Adjustment Valve/Fitting
The water screw adjustment valve is used to set the product mix ratio, but only as long
as the incoming water pressure is between 30-80 psi. Rotate the adjustment screw with
a standard medium or small blade screwdriver. Turning the screw clockwise will decrease
the water flow and counter-clockwise will increase water flow.
Note: If water source is not within the specification of water pressure requirement(s), a
water booster pump will need to be installed and adjusted to maintain the 30 to 80 psi requirement.
CO
Tank with Pressure Regulator
2
Alternate source used in conjunction with syrup CO
involved when setting the actual pressure because of product viscosities, length and positioning of lines (vertical or
horizontal). Optimal psi range is 40-80. A typical set point is 65 psi.
CO
Syrup Pump
2
See CO
Operated Bag-in-Box Pump brochure for technical product data.
2
Auto-Fill Circuit Board (Ultra-2 Only)
The auto-fill circuit board attaches to the back side of the main control board.
The attached auto-fill board will show additional features and service menus
when scrolling through programming menus. The additional menus relate to
the operation of the "Auger Refill On" system.
Model Ultra-1 control boards were developed at a later date and will already
have the auto-fill capability. The auto-fill board is not needed on the Ultra-1,
but the wiring harness identified as Q in the LAF instruction sheet will need
to be added in order for the "Auger Refill On" system to operate on Ultra-1
models that are not designed for auto-filling.
The "Enable Refill" menu found in programming will need to be turned on to
activate the refill automation when "Auger Refill On" is selected from the auger
switch.
System Functions and Operation
Auger Refill On System
The system maintains the level of product in the ULTRA hoppers with the use
of a level probe. Anytime the hopper drops below the level probe, the system
will automatically energize the corresponding syrup and water valve to refill
the hopper with product until it touches the level probe.
The refill system has a time limit and will display a "Refill Fault" message
when time has relapsed without satisfying the level probe. Once the set refill
time has elapsed without satisfying the level probe, the left or right hopper re-
fill fault will appear on the Ultra LCD screen and the hopper hood lights start
flashing as a visual indicator to alert the user of a fault message. The LCD
screen will prompt the user to press the "Ultra" switch to clear faults.
Example A: Bag-in-Box is empty and needs replacement.
Example B: Hopper level probe is not installed on the hopper after a cleaning
procedure.
pumps to move bag-in-box syrup product. Several factors are
2
Water Outlet
Syrup Outlet
Bunn-O-Matic Corporation
Level Probe
7
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