Change or Install Your Coalescing Filter Element
When it comes to keeping your air compressor running smoothly, maintenance is key. One crucial component that requires regular attention is the coalescing filter. This filter plays a vital role in removing oil vapor from compressed air, ensuring clean and efficient operation.
Whether you’re working with a rotary screw compressor or a reciprocating compressor, the process of replacing a coalescing filter remains the same. In this guide, we’ll walk you through the steps to safely and effectively replace it.
Safety First: Lockout Tagout Protocol
Before you begin, safety should always come first. Ensure you have the necessary personal protective equipment (PPE) and that your workspace is free from hazards.
This blog details how to change or install a coalescing filter element on your air compressor step-by-step. Before beginning, you should always have the required personal protective equipment, and you should ensure the equipment is properly de-energized before performing any maintenance. The procedures demonstrated in this blog and in our "how to" video at the end of the page are intended for trained and qualified air compressor maintenance technicians. This blog is for educational purposes only.
Step 1: Lockout Tagout
- Turn off the power to the compressor.
- Engage the lockout tagout mechanism, ensuring the system cannot be accidentally powered on during maintenance.
- Pro Tip: Notice how our technician turns away as he locks out the handle—this helps prevent injuries in case of an unexpected arc flash.
- Check that the panel is securely locked before proceeding.
- Isolate the air system by turning the air supply valve to the off position.
- Attempt to power up the unit to confirm that it is truly disconnected.
- Verify the power is off by checking the control panel.
Step 2: Relieve Air Pressure
- Using a wrench, loosen the sump pressure monitoring line.
- Tap the connection to ensure there is no residual air pressure in the unit.
- Check the pressure gauge—it should read zero before proceeding.
Step 3: Replace the Coalescing Filter
- Bleed the air pressure from the bottom of the coalescing filter housing.
- Remove the housing bottom by unscrewing it.
- Take out the old coalescing filter element.
- Install the new coalescing filter.
- Reattach the bottom of the housing, hand-tightening it securely.
Step 4: Powering the System Back Up
- Carefully remove the lockout tagout mechanism.
- Turn away while powering the panel back on—again, this reduces the risk of arc flash.
- Gradually turn the air supply valve back to the "on" position.
Final Thoughts
Congratulations! You’ve successfully replaced your coalescing filter and ensured your air compressor is running efficiently. Routine maintenance like this helps extend the life of your equipment, prevents costly downtime, and keeps your operations running smoothly.
Need help with compressor maintenance? Air Compressor Services has you covered! Whether you need expert advice or replacement parts, we’re here to help.
Contact us today to learn more about our maintenance solutions!