Cooling Water Connection
Description  | |||
|---|---|---|---|
CWI  | Cooling water inlet  | CWO  | Cooling water outlet  | 
- Connect the cooling water connections (CWI / CWO) to the water supply.
 
Connection size:
- G1/2, ISO 228-1 (CWI / CWO)
 
- Make sure that the cooling water complies with the following requirements:
 
Supply capacity  | l/min  | 8 ... 16  | 
Water pressure  | bar (g)  | 1 ... 6  | 
Supply temperature  | °C  | +10 ... +30  | 
Required pressure differential across supply and return  | bar (g)  | 
  | 
Cooling water supply temperature in Fahrenheit degrees:
- +50 … +86 °F
 - To reduce the maintenance effort and ensure a long product lifetime, we recommend the following cooling water quality:
 
Hardness  | mg/l (ppm)  | < 90  | 
Properties  | Clean & clear  | |
PH value  | 7 ... 8  | |
Particle size  | µm  | < 200  | 
Chloride  | mg/l  | < 100  | 
Electrical conductivity  | µS/cm  | 
  | 
Free chloride  | mg/l  | < 0.3  | 
Materials in contact with the cooling water  | Stainless steel and cast iron  | |
NOTE
Water hardness unit conversion.
1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french degree)