Methods, steps, and precautions for reinstalling plate heat exchangers

Assemble it in the same way you disassembled it; the key is to do it evenly, ensuring that the bolts are tightened evenly.

Is there a good way to secure the washer better to the plate so it doesn’t move during installation?

Previously, butter was used for securing it, but now it’s simpler – transparent tape is used instead.

Thank you, we have tried both methods； But later on, leakage occurred due to washer displacement; we are now trying to apply 502 glue in spots to see if that will work.

Do not use 502; it is a quick-drying adhesive that becomes too hard after drying, which affects the sealing effect. You can use an adhesive like 206 instead.

Use 303 glue, or ask the manufacturer if there are clip-on gaskets that don’t require glue; request glue from the manufacturer

There are several things to keep in mind when reinstalling a plate heat exchanger: 1. Before disassembly, use a tape measure to determine the thickness of the heat exchanger, that is, the thickness of the plate layers; when reinstalling, make sure the dimensions are the same. Don’t over-tighten it. 2. The gasket should be coated with glue so that it won’t come loose easily; relying solely on those holes is not sufficient. 3. When disassembling, it is best to arrange the plates in a specific order and not disrupt that order. When installing, also do it in order to ensure the passages are correct. 4. Pay attention to the first and last plates; be careful not to get them mixed up when installing, as these two are different from the others. 5. When tightening, apply torque simultaneously on the two diagonal sides. It’s better to tighten both sides together.

The poster should have a heat exchanger manufacturer come to clean it; manufacturers are more professional, and attempting to do it oneself can easily lead to leaks