Mechanical hydraulic oil plate heat exchanger in normal use, should always record the temperature and pressure state parameters, check the device working conditions; always check the plate heat exchanger sealing position to observe whether there is leakage and take relief, clamping and other measures . Exceed 150 ℃ or corrosive, flammable media, the proposed increase in the thin sheet metal beams on both sides of the protection device. Shall be recorded before removing the plate distance between the two clamping plates, when assembled to prepare for re-clamped to the size. Available water will wash the plate or chemical cleaning agents, use a soft brush should not use steel brushes.