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American Dispensing Company
88 Currant Road / Fall River, MA 02720-4781
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Water is then stored in an atmospheric water tank, sealed except for an air vent which is protected from dust
and airborne bacteria by a submicron air filter.
When your customer selects a vend, water will be pumped through a combination sediment/carbon POLISH-
ING FILTER which removes any remaining taste and sediment, and an ULTRAVIOLET (U.V.) STERIL-
IZER which sterilizes the water.
To keep the stored water fresh and sterilized, the water in the storage tank is recirculated through the polishing
filter and the U.V. sterilizer periodically.
Safety is our prime concern and it is designed into the machine. At the inlet and outlet of the R.O. membrane,
a comparator reads the total dissolved solid rejection rate, an indicator of the performance of the membrane.
If the rejection rate falls below a certain level, the microprocessor will shut the machine down. The same logic
applies to the U.V. sterilizer, where a true U.V. sensor continually monitors the disinfecting power of the light
and shuts down the machine when the U.V. level is not high enough.
There is also overflow and leakage protection. The sensors are located on the base of the machine, in the
drain tank of the dispensing bay and in the water storage tank. These sensor detect overflow or leakage and
will shut off whatever components are necessary.
C. WATER SUPPLY
The following conditions are required for optimum performance:
WARNING: FEED WATER MUST COME FROM INSPECTED, APPROVED WATER
SYSTEMS ONLY. SOURCE MUST BE MICROBIOLOGICALLY SAFE
DRINKING WATER.
1. MINIMUM PRESSURE/INLET FLOW RATE
Four gallons a minute at 35 psi back pressure or the equivalent of nine gallons per minute at a free
flowing 1/2” N.P.T. outlet at the intended location of the machine. This test should be conducted
with all other equipment connected to the same water line running to reflect true flow.
2. MAXIMUM WATER PRESSURE
The maximum water pressure is 80 psi. Install a pressure regulator if incoming water pressure may
exceed this level. High inlet pressure will irreparably damage filter housing and cause leaks in the
system.
3. TEMPERATURE
This machine should be kept in an environment between 40 and 108º F. Exposing the machine to
freezing temperatures will irreparably damage the components.
4. MINERAL CONTENT
Pretreatment of incoming water is recommended if hardness exceeds 150 ppm or 9 grains per gallon,
or if iron levels exceed .05 ppm. Membrane will still function with high mineral content water, but yield
will drop substantially, membrane cleaning is required more frequently, and membrane life will be
shortened significantly, increasing overall operating costs.