4. Checks and Inspection
4 - 4
b) Operation procedure when a cooling tower is used
1. If a cooling tower is used, supply the cleaning liquid and circulate it for a certain amount of time.
2. Exhaust the cleaning liquid, and wash through with water to completely remove the liquid.
Caution
1) Follow the user’s own procedure to keep operators safe. (E.g. Wear protective goggles, apron
and gloves to prevent contact with the drained condensate.)
2) When the circulating method is selected, check leakage and pump pressure carefully before
cleaning to prevent leakage of the cleaning liquid.
3) When chemical cleaning is performed, the amount, time and treatment vary depending on the
type of cleaning liquid. Therefore, follow the operation manual of each type of cleaning liquid
when cleaning. Pay careful attention to the drainage.
4) Confirm the cleaning effect by the following methods.
- How much scale comes off.
- Confirm change (reduction) in the pressure drop of the facility water system with discharge
pressure of the pump.
タンク(ドラム缶等)
圧力0.1〜0.3ＭＰａ
水量20〜30 L/min
循環ポンプ
ホース
Fig. 2
Hose
Tank (drum can, etc.)
Circulating pump
Water quantity 20 to 30 L/min
Pressure 0.1 to 0.3MPa
な水位を確保する
あふれない程度で十分
Fig. 3
Maintain a sufficient water lever,
ensuring that it does not spill over.