Cooling towers are very effective air washers. Atmospheric dust able to pass through the air inlet will enter the circulating water or air pollution, such cases as corrosion, scale and algae growth which impeded the performance of air conditioning equipments are surprisingly increasing. To prevent such trouble, it is not enough to depend entirely upon chemicals or equipments. Check the water quality and also on environment factors as well.

1.	Make quality analysis of circulating water and supplementing water and take appropriate action to control the quality.
2.	When the trouble is anticipated owing to the condensed circultion water, we recommend the use of chemicals, periodic blow down to keep the operation within the regulate water quality.
3.	For scale and alpha, clean with chemicals.
4.	Use strainer or filter depending on quality and mixture of the water.

Operating Hours and Condensation of Circulating Water Conditions

R	Circulating water quality 30 m3/h
E	Evaporation Loss quality 1% (0.3 m3 /h)
C	Carry over loss 0.1% (0.003 3 m/h)
B	Forced low 0%, 0.1%, 0.4%
H	Maintaining water 2m3 (c.t pit, piping and condenser incl.)
Nmax	condensation ration
Note	Normal condensation is about 3 fold

Note: Above table indicates in case of packaged. Chilling unit and turbo type compressor (131/min/RT. 37°C-32°C-27°C) For general calculation method, refer to 7.5 Relationship between Condensation Multiple (N) and Supply Water Volume (M).

Water treatment must be supplied and / or applied by a professional in the field in order to avoid fill damage. It is the user's/ owner/s responsibility to treat the water in order to stop biological contaminants and avoid among other bacterium, the legionnella bacteria, which is known to cause legionnaire disease.