ClearWater CD15/O2, Installation & Maintenance Manual

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6
Ozone Generator
The ozone generator houses the ozone reaction chamber(s), power supply and all electrical systems directly related to
the production of ozone. Ozone is produced when the feed gas is exposed to a high voltage electrical current inside the
reaction chamber.
Air Preparation
The ClearWater Tech ozone system is fed with oxygen enriched dry air. Corona discharge ozone generators are much
more effective, produce more ozone and require far less maintenance when the air preparation unit is included. The air
preparation system separates the majority of the nitrogen from the feed gas, creating oxygen enriched air while also low-
ering the dew point of the feed gas. Moist feed gas (air) will cause nitric acid to form inside the generator which decreas-
es ozone production and if not removed, will cause corrosion and eventual failure of the generator’s internal components.
The ability of the ozone generator to produce ozone is drastically decreased when the dew point rises above -80°C.
Electrical Interlock Box
The electrical interlock box is a multifunction electrical enclosure. It houses the main terminal strip for the service discon-
nect, booster pump (or control switch), motor control interlock (MCI), ORP interlock (or optional ozone monitor interlock)
and the vacuum interlock. The enclosure also acts as the air preparation monitoring station, controlling the amount of
intake air and monitoring the vacuum.
Injector Manifold (optional)
The ozone gas is drawn into the water line by means of a venturi injector manifold. This allows the ozone to be injected
into the water under a vacuum condition, which is the safest, most efficient technology available. The venturi utilized in
the injector manifold operates via a pressure differential (much like a carburetor). The amount of ozone drawn into it de-
pends on the water flow and pressure on the inlet and outlet sides. A pressure differential of at least 25 psi must be main-
tained between the well (or booster pump) and system back pressure for the venturi to operate correctly. Proper function
of the venturi/ozone system will occur only if the pressure differential is maintained. For highest efficiency, at least 10” of
vacuum at the venturi suction port and 25 psi at the venturi outlet must be maintained. ClearWater Tech stocks a com-
plete line of high-efficiency venturi injectors from 4-100 GPM.
Contacting Vessel (optional)
To maximize the effectiveness of ozone, it must be thoroughly mixed and have adequate time to react with the contami-
nants in the water before returning to usage or further processing. The contacting vessel is designed to achieve this
necessary mixing and contact time. A variety of contacting vessels are available for different applications from ClearWater
Tech.
Booster Pump (optional)
ClearWater Tech Model M-15/O2 and P-20/O2 ozone systems may include a booster pump. A variety of booster pumps
are available from ClearWater Tech to match different applications.