How often is the maintenance of the heat exchanger required?

1. Regular inspection
Visual inspection: It is usually recommended to perform a visual inspection every 6 months to ensure that all parts are normal and there is no damage or blockage.
Comprehensive inspection: Perform a more comprehensive inspection and necessary maintenance at least once a year.
2. Cleaning
Fluids with better water quality and less dirt: The cleaning cycle can be half a year to one year.
Fluids with poor water quality and more dirt: The cleaning cycle can be three months to half a year.
Fluids containing corrosive media or prone to scaling: The cleaning cycle should be adjusted according to actual conditions.
3. Water quality management
If water is used as a cooling medium, it is necessary to regularly check the water quality, including hardness, pH value and contaminant content. This is usually done every 6 months.
4. Replace the coolant
For systems using coolants such as ethylene glycol, it is recommended to replace the coolant every 6 months and check its concentration and pH value.
5. Electrical and control system inspection
Check the electrical connections and control system to ensure that there are no loose or damaged wires and that the control system is operating normally.
6. Fastener inspection
Check all fasteners regularly to ensure that they are not loose, usually every 6 months.
7. Maintenance under special circumstances
If the heat exchanger has problems such as reduced heat transfer efficiency, increased pressure drop, leakage, etc., it should be cleaned and maintained in time.
8. Industry standards
According to the requirements of the "Regulations on Safety Technical Supervision of Pressure Vessels" and combined with the production conditions of the enterprise, the maintenance cycle of shell and tube heat exchangers is generally 2 to 3 years.