When draining the medium during shutdown, if the equipment temperature has not dropped close to ambient temperature, rapid cooling will cause uneven contraction of plates or gaskets, which is a common operational risk in on-site maintenance. The BR-85 plate-and-frame heat exchanger provides corresponding structural design and operating guidelines for such issues.
This model has a single-plate heat transfer area of 0.85 square meters, a maximum handling capacity of approximately 200 cubic meters per hour, and a design pressure of 1.0 MPa. It is suitable for HVAC, district heating, process cooling, and other systems. If the medium needs to be drained after shutdown, wait until the equipment temperature drops close to ambient temperature before operating, to avoid uneven contraction of plates or gaskets caused by rapid cooling.
Record inlet and outlet temperatures, pressures, and flow rates every shift; check clamping bolts for looseness every week; compare pressure drop and temperature difference trends every month. Use data trends to judge scaling or leakage risks and arrange cleaning or maintenance in a timely manner.
Before disassembly, confirm that the system has been depressurized and loosen the clamping bolts in a diagonal sequence. Clean plates with a soft brush and neutral cleaning agent to avoid scratching the surface. When replacing gaskets, check that the grooves are clean and ensure proper installation. For long-term shutdown, drain the medium and keep the equipment dry.
