When using a plate heat exchanger for juice heating, the heat exchanger should be placed as close as possible to the evaporator, shortening the pipeline for juice and juice vapor to reduce temperature drop. Control the inlet valve in front of the heat exchanger as the inlet valve of the evaporator (i.e. no valve control between the heat exchanger and the evaporator), to avoid additional pressure or even water hammer in the heat exchanger when the inlet valve of the evaporator is turned down. When the amount of juice intake decreases, its steam (or hot water) valve should be turned down at the same time to avoid excessive temperature and pressure inside the device.

The connecting pipelines of plate heat exchangers should be properly treated. To prevent the weight of the pipeline and the tension or thrust caused by thermal expansion and contraction from acting on its connecting flange, the connecting pipeline of the heat exchanger should be equipped with a 90 ° elbow. It should have a drain valve before the steam inlet valve. Before starting up, the accumulated water and dirt in the pipe should be drained to prevent water hammer and the introduction of dirt during startup. Material pipes should be equipped with bypass and valves, and bottom pipes should be installed at low points. And there should be a joint for water pressure testing. Before use, check the water pressure of both sides of the channel separately.

Each connecting pipe should be equipped with a thermometer and pressure gauge. When heating with steam, the temperature of the condensed water should only be slightly lower than the steam temperature (calculated at saturation). If the decrease is too large, it indicates that there is water accumulation in the reactor, which will significantly reduce its heat transfer performance. The heat exchanger should be equipped with good condensate removal equipment.

The multiple plates of the plate heat exchanger are compressed into a whole through the end caps on both sides and multiple bolts. One end cover is fixed on the rack and used to connect pipelines, while the other end cover can move along the guide rail during assembly and disassembly. When all materials flow in a one-way manner, the four pipes for the inlet and outlet of hot and cold fluids are connected to fixed end caps, which facilitates management and installation. At this point, all four corners of the board have large circular holes that run through from beginning to end.