河源龙川长城4524冷冻机油-美孚齿轮油销售

　　真空吸入法‌:先用真空泵将系统抽至真空状态（约 98kPa-100kPa），利用负压通过软管将冷冻油吸入压缩机或系统中。此方法能有效避免空气混入，是目前较常用的规范操作 。

　　‌直接加注法‌:在压缩机停机并排出制冷剂后，拆下压缩机，从加油口直接倒入新油。适用于更换压缩机或大修时的场景 。

　　‌高压侧/低压侧加注‌:通过歧管压力表组的高压或低压软管接口，在特定阀门控制下吸入冷冻油。操作时需精确控制阀门开关，防止吸入空气Vacuum suction method: First, use a vacuum pump to evacuate the system to a vacuum state (about 98kPa-100kPa), and use negative pressure to suck the refrigeration oil into the compressor or system through a hose. This method can effectively avoid air mixing and is currently a commonly used standardized operation.

　　Direct filling method: After the compressor is stopped and the refrigerant is discharged, remove the compressor and pour new oil directly into the filling port. Suitable for scenarios involving compressor replacement or major repairs.

　　High pressure side/low pressure side filling: Inhale refrigerant oil through the high or low pressure hose interface of the manifold pressure gauge group under specific valve control. Accurate control of valve switches is required during operation to prevent air intake