At sites involving hydraulic oil cooling and lubricating oil heat exchange, procurement personnel are often asked: after this equipment is purchased, what routine maintenance is required, and which areas are prone to problems. The following provides an objective explanation in Q&A format regarding the key points for use and maintenance of the BXS-135 brazed stainless steel heat exchanger.
The plate material of this model is 304/316L stainless steel, the connection specification is DN50, the heat exchange area per unit is 4.5m², the overall dimensions are approximately 620×280×420mm, and the weight is approximately 48kg. Before placing a purchase order, it is recommended to verify the medium type, operating temperature, and pressure rating, confirm that the connection orientation matches the on-site piping, and reserve maintenance space. The brazed structure is compact overall; avoid applying additional torque to the connections during installation.
The focus is on medium-side cleanliness and pressure drop changes. If the pressure differential on the hydraulic oil or cooling water side increases, this usually indicates the presence of deposits in the flow channels, and cleaning should be scheduled. The cleaning agent composition must be compatible with 304/316L stainless steel; avoid chlorine-containing cleaning agents remaining in contact with the plates for extended periods at elevated temperatures. When confirming the medium type, technical engineers should also consider the effects of cleaning agent composition and operating temperature on the material.
During prolonged shutdown, drain the internal medium to prevent retained liquid from freezing and cracking the flow channels in low-temperature environments. Before resuming operation, check the connection seals and fastening status, pressurize gradually, and confirm there is no leakage before putting the unit into normal operating conditions.
This type of heat exchanger is suitable for hydraulic oil cooling, lubricating oil heat exchange, air conditioning condensation, and general industrial water-to-water heat exchange applications. Procurement personnel can work with technical staff to confirm the selection parameters based on on-site medium and temperature conditions.
