How to Install a Replacement VESDA Filter Cartridge

December 11, 2024

Introduction

Knowing how to install a replacement VESDA filter cartridge is essential for an owner of any VESDA or Xtralis aspirating smoke detector (ASD) system. Arguably, the filter is the most important part of any VESDA system. It ensures that the detector maintains high sensitivity without activating any false alarms. To do this, the filter traps large particles from the air before it enters the detector. Consequently, VESDA systems may be used in harsh environments, where there might be excess pollution and moisture in the air. This worry-free detection solution operates insofar as you are diligent in maintaining your system and replacing your air filters. Like with any detector, maintenance is important. Over time, these filters can become clogged or contaminated with dust, debris, and other particles, which may reduce the system’s airflow, sensitivity, and performance. As such, we will outline how to replace your air filter for all your VESDA systems.

How Often Do VESDA Filters Need to Be Replaced?

Remember to replace your filters at least every two years. In addition, you may need to replace sooner depending on your detector’s environmental conditions. If your detector is in a relatively harmless location, then the filter may take longer to accumulate dust and debris. In this case, you may benefit from waiting the full two years before replacing your filter. Also, you must always replace your filter after an actual fire event due to filter contamination. Keep in mind that filters cannot be cleaned or refurbished, so you should always replace your old filters with new ones.

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How to Replace a VLP and VLS Filter Cartridge

The VESDA VSP-005 may be used to replace filter cartridges for the VESDA VLC, VLC marine, VLF, VLP, and VLS aspirating smoke detectors. Here are the steps to replacing a filter for the VESDA VLP and VLS:

Slide down and remove the air filter cover (A).
Unscrew the recessed Phillips head screw (B).
Pull out the air filter cartridge (C). This will stop the aspirator. If the aspirator does not stop, replace the filter switch.
Insert the replacement air filter cartridge (P/N: VSP-005).
Tighten the filter screw.
Replace the air filter cover.
Reset the filter counter using either the LCD Programmer or a PC running Xtralis VSC.

How to Install a VESDA VLC Filter Cartridge

Installing a filter cartridge for the VESDA VLC:

Open the front cover
Locate the air filter cartridge (A), inside the detector compartment.
Undo the recessed Philips head filter screw (B).
Lift out the air filter cartridge.
Insert a new air filter cartridge (A) (P/N: VSP-005).
Tighten the filter screw (B).
Using a PC only (applicable to RO version) or LCD programmer/HLI (Applicable to VN version only), reset the filter by entering your user level and PIN number to log on to the detector then Initiate the Reset Filter Settings command located under the device menu.
Close the detector.

How to Replace a VESDA VLF Filter Cartridge

Installing a filter cartridge for the VESDA VLF:

Push in the security tab and lift up the field service access door (A).
Set the detector to ‘Standby’ mode by pressing the Disable button for 6 seconds. The Disabled LED begins to flash rapidly. After releasing the Disable button the disabled LED will flash more slowly.
Undo the recessed retaining screw (C) and pull out the old filter (B).
Using your finger, firmly press the filter switch (D), in the filter recess of the detector, 5 times within 5 seconds to indicate to the detector that a new filter is about to be installed (see inset). A LED next to the serial interface will flash each time you push the filter switch, and will continue flashing once you have successfully pressed the switch 5 times in 5 seconds.
Insert the new filter (P/N: VSP-005) and tighten the retaining screw.
Press the disable button for 6 seconds to return the detector to normal operating mode.
Record the filter replacement date on the filter.
Close the field service access door.

How to Replace a Filter on the VESDA VEU/VEP/VES Units

On the new units, replacing a filter is as easy as changing an ink cartridge with the filter locking mechanism. Additionally, it is no longer necessary to turn off the 24V DC power to the detector when removing the filter. Once you replace the filter, you will hear the aspirator automatically shut down and start up again as needed.

The VESDA VSP-962 filter cartridge may be used for VEU/VEP/VES aspirating smoke detectors. Here are the steps for replacing a filter cartridge:

Use your tool or a thin screwdriver to open the trap door.
Once the door springs open, press in on the air filter cartridge (P/N: VSP-962) to dislodge it.
Pivot the filter to the left to remove it from the hinge.
Place the new filter back into the mechanism, and make sure it locks in with a “click”
When you hear the detector powering back on, shut the trap door.

Press down and pivot to remove the filter

How to Reset the VESDA Filter Counter

When you replace your filter cartridge, it is imperative that you also reset the ASD filter counter. The filter counter is used to monitor the condition of the filter. It tracks the number of particles that pass through the filter during the sampling process. Hence, this counter must be reset once the filter has been replaced to ensure accurate records are being maintained. By tracking filter contamination, the counter helps ensure that the VESDA system provides accurate and reliable smoke detection.

Always make sure you are replacing the filter when you reset your ASD’s filter counter. That is, don’t reset the counter if you haven’t replaced your filter. To reset your filter counter, attach an LCD programmer to the video port in your device. Alternatively, you can use a PC running Xtralis VSC. On the display, navigate to the system settings or maintenance settings. Locate the filter counter reset option, and reset the filter counter through the software interface. Lastly, after resetting the counter, verify that the filter status has been updated and reflects the new filter’s usage status.

An IT Engineer opening a fire panel next to a VESDA ASD in a server room.

Conclusion

By regularly replacing your VESDA filters and resetting the filter counter, you ensure that your smoke detection system continues to function as designed. ASD systems offer powerful benefits compared to other detection systems. By replacing your filters, you will continue to reap the benefits of your very early detection systems.

At FireAlarm.com, we understand the importance of fire and life safety compliance. Our expert team is ready to assist you with systems design, installation, inspection, and maintenance services tailored to your needs. Don’t compromise on safety—ensure your systems are up to date and effective. Reach out to us today to discuss how we can support you in achieving optimal fire safety in your building.