Installation manual
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TROUBLESHOOTING
Troubleshooting
Note: If the chlorinator and pump are running it is normal for a cloud of small bubbles to 
be produced in the cell, indicating chlorine is also being produced.
Problem A
Water looks clean but no chlorine residual reading.
To test for chlorine residual, switch on the filtration system and adjust the Clearwater to 
60% output. After a few hours take a water sample from the pool. Test this water with 
your test kit. Chlorine residual should measure between 1 and 3 ppm.
REMEDY:
·  Adjust total alkalinity to 100-120 ppm.
·  Adjust the pH within the range 7.2 – 7.6.
·  Make sure your cell is clean.
·  Check cyanuric acid (stabilizer) level. 
·  Increase the setting of the output control.
·  Increase the running time of the pump, filter and chlorinator. Make sure that the filter  
  is clean and functioning properly.
·  Add salt if indicated by ‘Add Salt’ light. Do not operate the Clearwater until all the salt  
  has dissolved as this will cause damage to the unit. 
Use chlorine stabilizer (cyanuric acid) to protect chlorine residual.
This chemical acts as a sun-screen for chlorine and prevents chlorine from being too 
quickly destroyed by the sun. Chlorine stabilizer is essential to prolong the life of chlorine 
in the pool water. It should be added following the manufacturer’s instructions to achieve a 
level of 30- 100 ppm depending on geographical climate. Refer to stabilizer chart.
Use of algaecides
Although not normally needed with a Clearwater chlorinator, algaecides may be used. Al-
ways follow manufacturer’s instructions for treatment. Overdosing the pool with any type 
of algaecide may reduce residual chlorine measurements/reading. If this occurs, you must 
manually shock pool water with liquid chlorine (sodium hypochlorite) until a measurable 
free chlorine residual reading is obtained.










