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
NOTE
Water hardness unit conversion.
1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french degree)