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Connecting the Exhaust

In this manual, the term “exhaust” refers to either an exhaust fan or a filter unit and the term “exhaust” is used for simplicity. The important point is that it is mandatory that an exhaust unit or filter system is incorporated as part of your laser system. Never operate your laser system without a properly functioning exhaust.

The exhaust removes the dust, debris and smell from the engraving cavity and exhausts it to the outside of the building or to the filter unit. Prior to the installation of the laser system, you may need a contractor to install the exhaust system. The blower should be mounted outside your building for noise considerations. Ideally, the blower should not be more than twenty feet (6 meters) from the laser.

You should provide a metal duct (flexible aluminum or galvanized sheet metal) from the blower to the laser.

All Epilog Ascent 12/24 as well as 36 laser systems require an exhaust fan that is rated at a minimum of 350-400 CFM for external exhaust.

Epilog provides recommended exhaust flow rates (CFM) only for direct ventilation exhaust systems that are ported to the outside. Please note that this is also a recommendation and not a requirement, because factors such as length and type of tubing from the Epilog laser to the exhaust fan and from the exhaust fan to the outside of the building can produce significant losses on the true amount of air that is drawn from the Epilog laser.

Exhaust flow rates (CFM) for filter systems are not specified in this document. However, exhaust flow rates for filtration units will be lower than a direct ventilation exhaust system because filters are designed to be placed directly adjacent to the laser system and do not exhibit the air-flow losses that are typically found with direct exhaust fans.

Epilog has worked with most major filter manufacturers to recommend a specific filter system for each model of Epilog laser. Please contact your Epilog distributor to match a filter to the Epilog laser system you are using.

Note: Remember to put the blower switch for the laser system in an obvious and accessible place so it can be routinely switched on prior to using the engraver. Please connect the exhaust blower to the laser as shown on the following pages.

Remember, you may need a contractor to install the exhaust. This must be done PRIOR to installation of the laser system.

Warning: It’s important that either rigid or flexible metal ducting be used for all connections leading to and from the laser system and the exhaust fan. Vinyl, plastic, or any type of “soft” ducting is potentially flammable and should not be used unless provided by the filtration system manufacturer and made from fire-proof materials.

Fusion Ascent 12/24/36 Exhaust Setup

Fusion Ascent exhaust port highlighted

Epilog Exhaust/Filter Connections

There is one 4” (102mm) port attached to the back of the Fusion Ascent 12/24/36 laser systems.

Check your exhaust system for leaks. Most small leaks can be remedied with duct tape.

DO NOT OPERATE your laser with inadequate or leaking exhaust.

The drawings above show the typical exhaust setup. The left drawing shows the exhaust near the machine and the right drawing shows the exhaust fan on the roof. Where the exhaust fan is placed is a choice of personal preference. Some users like the exhaust fan outside because of noise considerations.

Air Assist Pump

Epilog’s optional Air Assist Pump is available to work with the included Air Assist features of the laser systems, directing a constant stream of air to your cutting surface to remove heat and combustible gases from the work area. The Air Assist Pump feeds 30 psi of air through the Air Assist structure.

The pump can be connected quickly to the machine via inlet and outlet ports on the compressor and the laser system. The Fusion Ascent systems have a port on the back of the machine to hook up an Air Assist Pump.

Air Assist compressor
Air compressor connection

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