How to Install Air Water Separators & Oil Coalescing Filters

In compressed air systems, air water separators (traditionally referred to simply as water separators) are mechanical devices designed to remove liquids, bulk water and oil, and particulates in the air or gas.?

Moisture separation commonly uses changes in direction and velocity. However, air water separators are not dryers, and any cooling of the air after passing through a separator will result in additional liquids being dropped out of the compressed air.?

In activated carbon and oil coalescing filters, air passes through a media, filtering out oil vapors and fine particulates.

When it comes to placement in the compressed air system, water separators are recommended to be installed after intercoolers, aftercoolers, prior to most air dryers, and directly at the point of use. This allows the air water separator to remove bulk liquids.

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2 Options for Filtration Systems or Component Installation

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When it comes to filtration systems and adding a component, there are two likely options you will find.

1. The first option is to mount a filter or new component directly in line and use as a main line filter with the air system. When doing this, be certain your air piping brackets are capable of supporting the filter weight.

2. The second option is to use the Tsunami universal mounting bracket. When choosing this option, it is important to use the proper hardware. Secure the bracket to the wall and if a stud is located in the area you are mounting the bracket, make sure to attach it to the stud, then attach the filter to the bracket using the mounting bolts supplied with the kit.?

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Installation Tips For Air Filters

There are a few things to remember when installing air water separators and oil coalescing filters. The first is that any type of alteration from the original design may cause failure in operating parameters so it is best to avoid altering the filtration system.?

Before any installation or maintenance, it is vital to release the system pressure.?

Once that has been accomplished remember to:

1. Always install the filtration system as close as possible to point of use, and as far away as possible from the compressor and any aftercoolers.
2. Always install the system with the arrows indicating the direction of airflow.??
3. Use only appropriate thread sealant on all connection fittings unless otherwise specified.?
4. Make sure not to over-tighten threaded connections as this may result in stripping of the threads and may cause leaking.?
5. Any air dryers present must be installed after the filters.

The maximum operating pressure is 250 PSI and the maximum operating temperature is 175° F. Any deviation from the maintenance instructions could result in operating failure. Likewise, exceeding flow rates can be detrimental to the operation of your system.??

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Maintenance for the Air Water Separator

Before maintenance efforts can begin, be sure to release system pressure. Once the system is depressurized, you can move on with the project at hand. Begin by removing the tube from the filter head. Hold the filter head and rotate the tube counter-clockwise.?

Remove the bottom baffle, the filter element, and the top adapter, if applicable.

Clean stainless steel mesh with soapy water or replace the entire element with a service kit. If washing the element, take note that you do not overstretch the mesh during reassembly, causing the element to be wrapped too tightly. Once that is complete, you can begin putting the filter element and hardware in place. Do this in reverse order from the previous steps.?

Tighten the baffle until the filter element can no longer spin freely. Do not over tighten!?

Finally, reinstall the outer tube by rotating clockwise onto the filter head and then slowly pressurize the unit.?

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Maintenance for the Oil Coalescing Filter

Regular maintenance is required to maximize the longevity and performance of all your filters. Routine replacement of the second stage oil coalescing filter and the third stage activated carbon filter elements every six months ensures maximum performance.

The oil coalescing and activated carbon filters follow the same element replacement routine.?

1. Unscrew the tube from the Tsunami filter head.
2. Remove the baffle from the threaded rod.?
3. Slide the old element off and replace it with the new element. Make sure there is a proper seal between the top element adapter and the filter head.
4. Tighten the baffle until snug. Do not overtighten!
5. Finally, screw the Tsunami outer tube onto the filter head and pressurize your system. You’re good to go!

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Bring Your Questions to the Experts

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While the installation process may be easily understood, some questions or issues may arise once you get into the process. For more information, these installation manuals are available:

1. Tsunami Air Filters & Packages
2. Single User Breathable Air System
3. Multi-User Breathable Air System

These manuals provide more detailed directions and tips on what to avoid. You can also discuss any lingering concerns with a Tsunami Compressed Air Solutions expert today.

This post first appeared on the Tsunami blog at https://www.gosuburban.com/tsunami/blog/how-to-install-air-water-separators-oil-coalescing-filters