Operational precautions for spiral plate heat exchangers

Precautions for operating spiral plate heat exchangers: 1. The operating parameters set by the user should be within the ranges specified in the table; if not, calculations must be performed using the actual parameters before selecting the appropriate model. 2. The pipeline system should be cleaned before installation and use; no sediment or debris should remain, and the circulating water must be softened. 3. During operation, the valve on the low-temperature side should be opened first, followed by the valve on the high-temperature side; use under no circumstances at pressures above the specified limit. 4. The equipment must be filled with water to seal it during shutdown.

1. For equipment installation, it is necessary to have engineering and technical personnel familiar with the system’s processes provide guidance, and the installation procedure should be determined in accordance with the requirements outlined in the instructions or design drawings. During installation, consideration should be given to making use of the pipeline layout as much as possible to accommodate thermal expansion, and the installation must be horizontal and aligned to minimize additional stresses, thereby avoiding any adverse effects on the equipment. Connect the pipes correctly according to the requirements of the diagram. 2. The pipeline system should be cleaned before installation; no mud, debris, or other impurities should remain in it ； Check whether the heat exchanger was damaged during transportation. 3. After the equipment is installed, a hydrostatic test is conducted on the equipment alone or in conjunction with the system. Thoroughly inspect all connection points. 4. After the hydrostatic test is completed, insulate the heat exchangers that require insulation. 5. The circulating water must be softened or treated with chemicals. Minimize the likelihood of scaling to extend the service life. In the event of scaling, chemical cleaning methods can be used to clean and remove the scale. 6. When starting up, the low-pressure valve should be opened first, followed by the high-pressure valve ； The order is reversed when shutting down. Minimize the pressure difference between the two channels. Try not to keep a single channel of the heat exchanger under pressure for an extended period. 7. It must not be operated under excessive pressure or temperature. Overpressure operation causes the greatest damage to heat exchangers and is prone to triggering safety accidents. 8. When not in use for an extended period, the contents inside the heat exchanger should be drained, dried with compressed air, and then stored.