Bunn IMIX-3S+ Installation & Operating Manual page 5

PLUMBING REQUIREMENTS
This dispenser must be connected to a cold water system with operating pressure between 20 and 90 psi from a
1⁄2" or larger supply line. A shut-off valve should be installed in the line before the dispenser. Install a regulator
in the line when pressure is greater than 90 psi to reduce it to 50 psi. The water inlet fitting is 1⁄4" flare.
NOTE - Bunn-O-Matic recommends 1⁄4" copper tubing for installations of less than 25 feet and 3⁄8" for more
than 25 feet from the 1⁄2" water supply line. At least 18 inches of an FDA approved flexible beverage tubing,
such as reinforced braided polyethylene or silicone, before the dispenser will facilitate movement to clean the
countertop. Bunn-O-Matic does not recommend the use of a saddle valve to install the dispenser. The size and
shape of the hole made in the supply line by this type of device may restrict water flow.
This equipment must be installed to comply with the International Plumbing Code of the International
Code Council and the Food Code Manual of the Food and Drug Administration (FDA). For models installed
outside the U.S.A., you must comply with the applicable Plumbing/Sanitation Code for your area.
NOTE - If a backflow preventer is required by code, a shock arrestor should be installed between backflow pre-
venter and dispenser. Installing the shock arrestor as close to the dispenser as possible will provide the best
results.
NOTE - Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed
and maintained in accordance with federal, state and local codes.
PLUMBING HOOK-UP
1. Flush the water line and securely attach it to the elbow fitting on the bottom of the dispenser.
2. Turn on the water supply.
INITIAL FILL & HEAT
1. Turn on the water supply and connect the dispenser to the power source.
2. Water will automatically flow into the tank to the proper level and then shut-off. This will take less than ten
minutes. A tank full of cold water will take approximately eighty minutes for the water to heat on 120 volt
versions, and forty minutes on 120/240 volt versions.
3. Fill the hopper(s) with the dry product to be dispensed.
LIQUID LEVEL CONTROL
The system automatically maintains the hot water tank's level by energizing the refill solenoid when the water
level drops below the liquid level probe. If the system has not successfully refilled in 10 minutes, a refill error
occurs. When a refill error occurs, the refill solenoid is de-energized. Once the cause of the refill error has been
investigated and cured, the system can be reset by either disconnecting (for at least 5 seconds) and then recon-
necting the power to the machine, or by entering one of the program modes (see Programming Modes.)
RINSE TIMER
The dispenser is shipped from the factory with the rinse timer disabled. To enable the rinse timer, refer to Pro-
gramming the Dispenser and select yes in the "Rinse Alarm ?" screen; set timer to the desired time and exit the
programming mode.
When enabled, the rinse timer automatically keeps track of the time since the dispenser was last run through a
rinse sequence. If the dispenser detects that a rinse sequence has not been run for the desired time, a message
will appear on the LCD display. If the Lockout is set, after an additional 4 hours, a rinse cycle has still not been
run, the LCD display will display a message, and the hopper drives will be disabled until a rinse sequence has
been run.
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