Basic Requirements - The Pool Owner; Use Of Minerals - Pool Controls Ozone Chemigem User Manual

Operation Following a Power Failure
The Ozone Chemigem unit comes with a timer function built into the operating software
and is backed-up by a Real-Time Clock (RTC) similar to those found in computers.
During a power failure the Ozone Chemigem will keep time and maintain AutoMode
functions. If a Filter Cycle is active when power is returned the pump will be turned ON
within 1 minute. The Ozone Chemigem will keep all its settings and will not need to be re-
programmed. The Ozone Chemigem is ideal for use in systems where repeated power
cuts occur, such as off-peak power circuits and Queensland's Tarriff33 system.
Basic Requirements – the Pool Owner
Your Ozone Chemigem maintains pool water biological safety by controlling the pH and the
ORP (sanitation level). It achieves this by dosing the necessary chemicals into the pool in a
controlled manner. The chemical drums must be checked on a regular basis – empty
drums will lead to poor balance and incorrect operation.
To achieve water safety effectively and efficiently there are other water balance factors that
must be maintained by the pool owner. The most important water balance factors are
described on the next page.
Failure to maintain these aspects of pool water balance can lead to poor water quality and
incorrect/unusual operation of the Ozone Chemigem unit.
In the case of incorrect or unusual operation the pool water must be tested and any
balance problems corrected. After this is done it may also be necessary to clean the Probe
– this is part of the unit maintenance, see page 21.
Minerals – can they be added to the pool?
Your Ozone Chemigem is compatible with minerals (magnesium and/or potassium
chlorides). Liquid chlorine will form small amounts of magnesium hydroxide which is a
flocculant. It is the magnesium hydroxide that acts to keep the water clearer than other
pools and also has the "transdermal health effects" claimed in literature.
As the potassium salt has no obvious benefit it is suggested that magnesium chloride only
need be added to the pool. A magnesium ion concentration of 100ppm is suggested as a
starting point. All magnesium chloride salts readily available are based around magnesium
flakes (the hexahydrate form). To add 100ppm simple use the following formula:
Weight of magnesium flakes = 0.8kg x volume (in 1000's Litres)
Example: a 30,000L pool will need 0.8 x 30 = 24kg
Note: magnesium sulphate (eg Epsom salts) are NOT RECOMMENDED.
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