Davey OZOMATIC OZONE GENERATORS - Manual (Page 6)

6
VENTURI AIR SUCTION
The Venturi air suction method is accomplished by connecting the Ozomatic to the Venturi air line of the spa.
This system is easy where access to the air lines is available but on existing spas might not be possible. The
main drawback with this system is that the ozone is only drawn into the spa when the air controls are closed.
When they are opened, the amount of ozone drawn into the spa decreases dramatically. This system is the least
efficient injection method.
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VENTURI AIR SUCTION SYSTEM
OZONE AIR LINE
- MUST BE DOUBLE LOOPED AND
CONNECTED ABOVE WATER LEVEL
Locate the Ozomatic Unit outside or underneath the spa skirting so that it is close to the spa air line and the
operating light can be seen.
Install the Tee and hose barb.
Form a double loop of ozone hose and secure it above the water level.
Note: There is a non-return valve on the ozone hose. Blow into the hose to ensure ozone will be able to
flow in the correct direction. The non-return valve is designed to operate under pressure and it is possible
for water to seep past it when no pressure is applied; hence the loop is an extra safeguard to stop water
entering the Ozomatic.
Close the air controls and turn the pump on. Ensure that a bubble mist is entering the spa from at least one
of the jets. Place a finger over the end of the Ozone hose and ensure that the air entering the spa is being
drawn through the hose. Connect the hose to the Ozomatic.
Note: The air control must be kept closed when the spa is operating during its normal filter cycle. If it is
not, air will be drawn in through the air control and you will not produce any ozone, nor will you be
ozonating the spa water.
Plug the Ozomatic into the power outlet (that controls the pump) and ensure that the operating light is on.