Specifications

2.3 Exhaust System Requirements
To properly exhaust fumes and smoke from the laser engraving system during
operation, it is necessary to provide an exhaust unit moving a minimum of 235 CFM at
6 inches of static pressure. Many industrial supply companies carry blowers that should
meet these requirements.
THROUGH OUR RESEARCH WE HAVE ESTABLISHED GUIDELINES ON THE PROPER
CFM RATINGS REQUIRED FOR THE EXHAUST SYSTEM. THESE RATINGS ARE BASED
ON THE MEASURED DISTANCE BETWEEN THE EXHAUST OUTLET ON THE LASER
SYSTEM AND THE INLET OF THE EXHAUST BLOWER. WE HAVE FOUND A SUITABLE
SUPPLIER FOR THIS TYPE OF EQUIPMENT IF YOU CHOOSE NOT TO USE THIS
SUPPLIER, PLEASE ENSURE THAT THE BLOWER THAT YOU PURCHASE MEETS OR
EXCEEDS THE FOLLOWING SPECIFICATIONS.
DISTANCE BETWEEN BLOWER AND
LASER
CFM RATING AT
6 INCHES STATIC PRESSURE
UP TO 10 FEET 235 @ 6 INCHES STATIC PRESSURE
10 - 20 FEET 410 @ 6 INCHES STATIC PRESSURE
21 - 30 FEET 535 @ 6 INCHES STATIC PRESSURE
31 - 40 FEET 625 @ 6 INCHES STATIC PRESSURE
The blower must be mounted on the OUTSIDE of the building either on the roof or on a
cement pad next to the building. Rigid duct work should be used between the blower
unit and the laser system. The exhaust tubing should be smooth walled and have as
few bends as possible. Use duct work with a diameter that matches the blower unit and
reduce the duct work to four inches just before the point where it attaches to the laser
system. Also consider installing a gate to control air flow and to close off the exhaust
from the outside environment when the laser is not in use. This is especially useful in
colder climates where it is not good to have cold air coming into the laser from the
outside. Do not connect the rigid duct work directly to the laser system. Use a short
piece of industrial grade, wire reinforced rubber tubing to connect the end of the gate,
or tubing, to the laser system. This will provide mobility and will dampen blower
vibrations. Do not use a very long piece because it’s spiral construction reduces air
flow. Install a hose clamp on both ends of the hose to prevent leaks and to prevent the
hose from slipping off.
We recommend installation of the exhaust system by a licensed contractor to meet
safety and local code requirements. Please contact a local air quality control specialist.
Having the blower wired to a wall switch, by a licensed electrician, in the same room
will make it easy to turn it off and on.
WARNING
Do not attempt to operate the laser engraving system without a properly
installed and operating exhaust system. Some materials when cut or
engraved can produce fumes that are hazardous in concentrated amounts.
12