| Trouble |
Cause |
Remedy |
| Rise in cooling water temperature |
1.Excessive or inadequate cooling water |
1.Adjust to the specified flow. |
| 2.Irregular flow of air. |
2.Improve ventilation. |
| 3.Re-circulation of air from tower outlet. |
3.Improve ventilation. |
| 4.Irregular rotation of sprinkler pipes. |
4.Remove dirt and scale. |
| 5.Improper flow of air from fan. |
5.Adjust the angle of fan blades. |
| 6.Blocking of the Fills. |
6.Clean the blocked area. |
| Abnormal water flow |
1.Blocking of the sprinkler pipe holes. |
1.Clean sprinkler pipes. |
| 2.Blocking of strainer mesh. |
2.Remove strainer and clean. |
| 3.Water level decrease in the water basin. |
3.Adjust float valve or rapid water make up system. |
| 4.Improper selection of water circulating pump. |
4.Replace the pump with proper capacity. |
| Noise and vibration |
1.Fan blade tips touching casing. |
1.Adjust the fan mounting. |
| 2.Bending of fan shaft. |
2.Adjust bend at special shop. |
| 3.Loose bolts. |
3.Tighten loose bolts. |
| 4.Motor's bearing damage. |
4.Repair or replace motor. |
| 5.Damage in fan and/or motor fan. |
5.Replace fan. |
| Excessive current flow |
1.Drop in voltage. |
1.Check supply voltage. |
| 2.Irregularities in the angles of the fan blades. |
2.Make careful adjustment. |
| 3.Damage in motor. |
3.Repair or replace motor at manufacturer. |
| 4.Overload through excessive air flow. |
4.Adjust fan blades angles. |
| Water carry over |
1.Irregular rotation of sprinkler pipes. |
1.Adjust the angle of the sprinkler pipes and check the sprinkler head. |
| 2.Blocking of the fill. |
2.Eliminate blockage at the upper edge of the fill. |
| 3.Improper installation of eliminator. |
3.Improve & repair eliminator. |
| 4.Excessive circulating water. |
4.Adjust the water flow with valve. |
| 5.Excessive air flow. |
5.Adjust fan blades angles. |
