Reason 1: The free chlorine is destroyed by solar radiation.
Measure: If necessary, use stabilized chlorine .
Reason 2: A high organic load.
Measures: Increased fresh water supply, sludge removal.
Reason 3: The filter is not working properly.
Measure: Filter backwashing, flocculation.
Reason 4: high water temperature.
Measure: higher dosage.
Effect: Possible damage to health .
Reason: Slurry dosing system defective, incorrect manual dosing .
Measure: Wait until the chlorine value has dropped by itself or eliminate free chlorine.
Effect: typical indoor pool odor, skin and eye irritation .
Reason 1: high organic load .
Measures: Increased fresh water supply, sludge removal.
Reason 2: Filter is not working properly.
Measure: Filter backwash flocculation .
Reason 3: free chlorine too low .
Measure: Increase dosage .
Effect: Lime precipitation Corrosion
Reason: low acid capacity (Ks4.3 )
Measure: Increase acid capacity (Ks4.3 )
Impact: The use of acidic treatment agents in conjunction with low acid capacity .
Reason: The filling water has a low acid capacity and/or calcium hardness .
Measure: Measure the acid capacity and calcium hardness and correct depending on the result.
Effect 1: Poor disinfection effect
Reason: A high acid capacity .
Measure: Reduce the acid capacity .
Effect 2: Lime precipitation
Reason: When using calcium or sodium hypochlorite .
Measure: If necessary, switch to an organ. Chlorine preparation. Determine acid requirement and dose pH reducer in higher concentration.
Reason 1: Lime precipitation .
Measure: If necessary, reduce pH value, increase filling water supply to reduce calcium hardness. Further measures Do not use sulphuric acid or sodium hydrogen sulphate in conjunction with calcium hypochlorite.
Reason 2: Hardening agent (organic )
Measure: Rush sludging, add flocculant, run circulation pump.
Reason 3: A colloidal impurity
Measure: Regulate pH value, add flocculant, run circulation pump.
Reason 4: An impaired filter function .
Measure: Cleaning, descaling, filter sand
Reason 5: Flocculant residues(AI )
Measure: Dosing of flocculant too high or at an unfavorable point. Check pH value and correct if necessary.
Reason: Traces of metal from the filling water.
Measure: Check filling water quality.
Reason: Iron content of the filling water.
Measure: Raise the pH value to 7.6 and add flocculant. Run the circulation pump. As a general rule: no chlorine in the skimmer.
Reason: Manganese content of the filling water.
Measure: Raise the pH value to 7.6 and add flocculant. Run the circulation pump. As a general rule: no chlorine in the skimmer.
Reason: Traces of copper .
Measure: Add flocculant, run circulation pump.
Reason: Is caused either by copper-containing agents or by corrosion on copper parts.
Measure: Add flocculant, run circulation pump.
Reason: Algae growth (e.g. during thunderstorms )
Measures: Rush sludging, addition of an algaecide .
Reason: Due to deposits of hardening agents in hard water (limescale) .
Measure: Empty the pool, use a limescale remover. For prevention: maintain pH value 7.0-7.4, use hardness stabilizer.
Reason: Due to strong foaming algicide in the water, residues of overwintering agent, surfactants from cleaning agents in the water.
Measure: Add defoamer, increase fresh water supply. For prevention: Use foam-free algaecide, use correct cleaning agents.
Reason: Formation of heavy metal sulphides in the film surface .
Measure: Clean the film with a special film cleaner. For prevention: Do not use algaecides containing copper and silver.
