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FREEFLO Salt Chlorinator Owner’s Manual
Foreword
Congratulations on purchasing a Pentair Onga FREEFLO Salt Chlorinator for your swimming pool.
This system is designed for robust reliability and easy operation to give you many years of trouble
free service.
Please read the instructions thoroughly before operating your unit. If you have any concerns or
require any further assistance, then please do not hesitate to contact our friendly staff or any of
our Pentair distributors.
Chemicals
It is important to note that the Pentair Onga FREEFLO Salt Chlorinator does not maintain the
water chemistry of your swimming pool water; it simply produces chlorine from a mild salt
solution. To ensure that your chemical balances are within the guidelines listed below you should
also have your water tested regularly at your local pool shop to encourage a sparkling clean
healthy pool.
PH 7.2 – 7.4
Total Alkalinity 90ppm – 150ppm
Cyanuric Acid 40ppm – 65ppm
Salt 4000ppm
Chlorine 1.5ppm – 2.0ppm
Calcium hardness: 200-400ppm
For the best chlorine results in a balanced pool a salt level of 4000 parts per million (ppm) is
required. This is easily achieved by using the formula below or approximately 20kg of salt per
every 5000 litres.
For example:
Pool volume = Length x Width x Average Depth x 1000
= 9m x 4m x 1.5m x 1000
= 54000 litres
Salt required = Pool Volume x 4 (salt level required, 4000ppm)
1000
= 54000 x 4 / 1000 = 216kg
Or 11 x 20kg bags of pool salt
NB: Before adding salt to your swimming pool, please make sure your Pentair Onga FREEFLO
Salt Chlorinator is switched off to avoid overload damage. THIS WILL VOID ALL WARRANTY.
It is recommended to manually add chlorine to your swimming pool on initial startup as a Salt
Chlorinator is designed to maintain chlorine levels and not run for unnecessary long hours to
try to build an acceptable chlorine level. The manual addition of chlorine may also be required
for unforeseen situations where your swimming pool has required a high chlorine demand, for
example after large bather load.
PENTAIR ONGA FREEFLO SALT CHLORINATOR
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