在重庆升降机加工装配或者维修等过程中不可避免的残留污染物，因而必须采取有效的净化措施，机件清洗净化应从加工制造的最初工序开始，每一工艺过程乎都需采取相应的净化措施，最后装配工序完成后的净化主要是清除装配时带入的污染物。

1、货梯系统组装完毕后需要进行全面的清洗以清除在系统组装过程中带入的污染物，组装后的系统采用流通法进行清洗即通过液流对机件内部残留污染物的冲刷作用，使污染物从附着表面并释放出来。
Wenzhou freight elevator after the system needs to be fully assembled cleaning system to remove contaminants into the assembly process, the assembled system cleaning that is scour the flow of parts through the internal circulation method using residual contaminants that pollute and was released from the attachment surface.

2、先将货梯系统较复杂精密的机件进行断开用旁路连通回路，然后根据具体情况可以利用系统的油箱和液压泵，接入高精度大纳污容量过滤器或外界专用的清洗装置，对系统进行清洗对于复杂的系统可分为几部分或几个回路分别清洗。
First Wenzhou Huoti relatively sophisticated mechanical systems were disconnected in communication with the bypass circuit, then the system can be used depending on the circumstances of the fuel tank and pump, the access precision dirt holding capacity of the filter or an external special cleaning means, cleaning system for complex systems can be divided into several parts or several circuits were cleaned.

3、货梯清洗一般采用与系统相适应的粘度较低的油液，并尽可能提高液流速度，以便使系统回路内的液流保持充分的状态清洗到一定程度后，将断开的机件接入系统继续进行循环清洗直到系统油液污染度达到规定的要求为止。
Wenzhou freight elevator after cleaning generally use a lower viscosity oil compatible with the system, and to maximize the flow rate so that the flow loop system is kept clean enough state to a certain extent, the disconnected parts connected cleaning cycle continues into the system until the system reaches a predetermined oil pollution requirement.