5
OPERATION
CAUTION: Use only the rated voltage indicated on the product information label. The
product information label is affixed on the case.
Place the ozone generator close to the point of use, in a clean and dry location free from dew,
condensation or high humidity. If applicable, locate your ozone generator well above the
waterline to prevent water entering the generator (see figure 1).
The HG-1500 ozone generator can produce 1 gram of ozone per hour from oxygen.
The air/oxygen inlet and ozone outlet ports are located on the rear panel of the generator. The
ports are bi-directional so either can be used as the inlet.
Connect one port to a suitable air or oxygen supply and the other to the ozone delivery system
with ozone compatible tubing. If a check-valve is required on the outlet side of the generator,
ensure that it is made from ozone compatible materials. Check valves that are not ozone
compatible must be placed on the air inlet side of the generator.
A typical system for ozonising with air requires:
•
A suitable diaphragm pump or oil-less compressor to deliver air at a flow rate between 1 and
15 litres per minute, at a maximum pressure of 3 psi, which is equivalent to a 2.0-meter (6.56
ft.) head of water. Suitable pumps are available from aquarium suppliers.
•
Ozone compatible 6mm tubing and fittings.
•
An in-line fine-particulate filter to remove dust, fitted before the air inlet port of the ozone
generator.
•
An adsorption-type air dryer may also be used to remove excess water vapour from the air to
limit the generation of nitrogen oxides.
•
For ozonising water, a typical system would also include a check valve and diffuser, or for
pools or spas, a venturi injection point (see figures 1 & 2).
If you use a diffuser, set its depth at no more than 2.0 meters (6.56ft.) below the level of the
water.
Many spas include a venturi to aerate the water to the nozzles. It is normally located between the
circulation pump outlet and the first nozzle. It may be possible to inject ozone into the spa water
at this point. Nevertheless, check with the manufacturer before making any modifications as it
may void your spa warranty.
Figure 2 shows a suitable position for a venturi for ozonising a swimming pool or spa. A venturi
normally creates a partial vacuum that may be sufficient to operate the ozone generator without
using an air pump. However, make sure you fit a check-valve as a precaution.
