EVOTEK EFDL9 Duplex Filter Instruction Manual

About this manual

This manual describes the EVOTEK EFDL9 duplex hydraulic filter and its components, such as the vent, drain, pressure‑equalization line, flow direction lever and differential pressure indicator. It provides safety precautions for handling the filter during operation, emphasizing the need to relieve pressure before opening the filter bowl.

Step‑by‑step instructions are given for switching the flow direction, opening the pressure‑equalization valve, venting the bowl, removing the dirty element, cleaning the bowl and installing a new filter element. The same procedure applies to both the left and right filter bowls, allowing filter changes without interrupting the hydraulic system. This manual is written in Chinese.

What's inside

• Exchange of filter elements
• Safety precautions
• Operation steps
• Component identification
• Pressure equalization procedure

Specifications

Frequently asked questions

How can the filter elements be exchanged without stopping the system?

Open the pressure‑equalization ball valve, switch the flow direction lever, close the ball valve, vent the bowl, remove the dirty element, clean the bowl and install a new element.

What must be done before opening the cover screws?

The pressure in the filter bowl must be fully relieved by opening the vent before the cover screws can be opened.