General Operation/Pool Chemistry; Setting The Right Chlorine Output And Filtration Time; Stabiliser; Ph Level - Astralpool APR-3 Serie Instrucciones De Funcionamiento

5.0 General Operation/Pool Chemistry

5.1 Setting the Right Chlorine Output and Filtration Time

Your APR Chlorinator must be run every day to ensure that your pool is correctly sanitised. As
the sun dissipates chlorine, running times are higher in the summer compared to the winter.
AstralPool recommend that you initially run you chlorinator at maximum output.
Summer
You should set your Chlorinator to operate for 8 to 10 hours per day. Ideally, run it for 4-5
hours in the morning (say 8-12pm) and 4-5 hours in the evening (say 6.00-11pm).
In extremely hot weather it may be necessary to extend the running time if you find that the
free chlorine level is too low.
Winter
You should set your Chlorinator to operate for 6 to 8 hours per day. Again, running it in the
morning and evening is preferable.
Checking Chlorine Level.
Ideally, check you Chlorine level after the morning operating period. The free chlorine
residual level should be somewhere between 1 and 3 part per million. Increase or decrease the
output of the Chlorinator to get the right residual chlorine level. It may also be necessary to
adjust the operating period if you are running at minimum or maximum output.

5.2 Stabiliser

As previously mentioned, sunlight rapidly dissipates the amount of free chlorine in your pool.
Chlorine stabiliser greatly reduces this effect.
Without stabiliser, you may need to run your Chlorinator and filtration system up to 16 hours
per day longer!!!
Keep the Stabiliser reading between 30 and 60ppm.

5.3 pH Level

You should keep your pH level between 7.0 and 7.4 for fibreglass pools and 7.2 to 7.6 for other
pools.

5.4 Total Alkalinity

The ideal range is between 80 and 120 ppm.

5.5 Salt Level

Although salt is not consumed by the Chlorinator, salt is lost during backwashing, and when
your pool overflows due to rain or splashing. The correct salt level is important to cell life and
the effective operation of your chlorinator. Salt level should be maintained around 4,000ppm
but should never be allowed to fall below 3,000ppm.
A typical pool of around 50,000 litres requires 200kg of salt to initially set-up the pool to
4,000ppm.
A low salt level warning is indicated on your APR Chlorinator if the salt level drops. If Low
Salt is indicated, check again in 24 hours and then if it is still indicated, add two 25kg bags of
APR Salt Chlorinator (V3) Page 11