Davey OZOMATIC OZONE GENERATORS - Manual (Page 3)

3
OZOMATIC
®
1. INTRODUCTION:
The Ozomatic unit produces ozone each time the unit is turned on. Usually, the Ozomatic will be cou-
pled to operate at the same time as the pump. The Ozone is produced by the reaction of ultraviolet
light on the oxygen content of air. This air/ozone mixture is then mixed with the water. There are
three methods of introducing ozone into the spa/pool water, rated for efficiency:
1. High Efficiency Injector (with or without Bypass)
2. Mini Footwell Injection
3. Air Venturi Injection
The design and construction of your pool or spa determines which method your installer will use. If
unsure, check with your pool/spa builder.
The Air Venturi system draws ozone into the water when the air intakes are screwed shut. You will
see bubbles entering the water through the spa/pool jets. It is important that during normal filtration
cycles the air intakes be left closed so that optimum ozone can enter the water. This is the least effi-
cient method.
The Mini Footwell system is a dedicated jet that is usually plumbed into the lower wall of the pool or
spa and when the pump runs it draws ozone into the water via a Venturi action. A fine mist of bubbles
can be seen coming from this jet when the pump is running. This system does not rely on the air in-
takes and runs independently. This is a moderately efficient system.
The High Efficiency Injector is usually in the form of a Bypass and the Bypass Injector will be in-
stalled near your filter and consists of a ball valve which is adjusted to allow a flow of approximately
8-10 on the optional Ozomatic flow gauge for models MOG 20 and MOG 60 and 16-20 for model
MOG 120. This is the optimum flow of air through the Ozomatic unit.
2. RUNNING TIME:
The amount of time that the filter runs each day is very important. The longer the filter runs, the more
debris that is removed from the water. The cleaner the water, the easier it is for the ozone to sanitize.
As you sit in the spa, your body gives off oils, fats, make-up, fine particles of skin, etc. Algae and
bacteria are also present in the water. Ozone will oxidise the contaminants provided the system is al-
lowed to operate for the correct amount of time. The running time will depend on the size of your spa
(i.e. its volume), the temperature of the water and the number of people who use it.
As a guide, the filter should be run for a minimum of 5 to 6 hours per day. Some systems use a
small circulator pump to run the spa 24 hours per day at a very low electrical cost. (Refer page
10)
NEVER RUN THE OZOMATIC VIA A THERMOSTAT CONTROL. When a spa is run un-
der a thermostat (temperature) control it will operate for a short period each hour. This is to
keep the water hot. The Ozomatic needs to operate for a minimum period of 2 hours at a time
to ensure that the spa water is turned over and mixed with the ozone. Also, constant stop/start
of the Ozomatic will decrease the useful life of the UV lamp inside the unit. In applications such
as this, it is possible for the Ozomatic to be plugged into a separate power outlet and left run-
ning 24 hrs a day. This enables the thermostat control to stop/start the pump as often as re-
quired without damaging the Ozomatic.