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SETUP
• If using hard duct, install flexible
connection between Dremel LC40 laser
cutter and any hard duct to isolate
vibration from duct and prevent duct
damage. Up to six inches of provided
Exhaust Hose may be used to create
flexible connection.
• 90-degree elbows must be at least 20
inches away from External Booster Fan.
If you are unsure how to setup the exhaust
duct, consult an HVAC professional.
4. Secure booster fan according to
manufacturer’s instructions. Installation
of the booster fan should be as close to
the discharge point as possible to
minimize leakage into the space from
positively pressurized ductwork.
5. Seal all seams and connections with
building code approved sealant or duct
tape.
Setting up Exhaust Management Method
C or D: Filtration Units
Exhaust management methods C and D
use a filtration unit (not supplied) to filter
the Dremel LC40 Laser Cutter exhaust.
When selecting a filtration unit be sure it is
suitable for use with laser cutters/
engravers. The filtration unit should be
Underwriters Laboratory listed. When
using an external filtration unit be sure to
choose correct ventilation option on the
Touch Screen during the Dremel LC40
Laser Cutter startup sequence. Choose a
well-ventilated area to set-up the Dremel
LC40 Laser Cutter and filtration unit.
Follow the manufacturer’s instructions for
changing filter(s) in filtration unit.
Items supplied with Dremel LC40 Laser
Cutter: (1) 10 ft. Exhaust Hose & (2) Hose
Clamps.
• Additional Items needed: Building code
approved sealant or duct tape, filtration
unit.
1. Set up filtration unit according to
manufacturer’s instructions and relevant
building and fire codes.
2. Supplied 10’ Exhaust Hose and Hose
Clamps may be used if compatible with
selected filtration unit.
3. Seal all seams and connections with
building code approved sealant or duct
tape.
Requirements for Exhaust Management
Method E: Commercial/Industrial
Mechanical Exhaust System
Connection of Dremel LC40 Laser Cutter
to a Commercial/Industrial Mechanical
Exhaust System should only be performed
by a trained HVAC professional. Exhaust
must be discharged outdoors and
installation must comply with all codes and
regulations for hazardous or noxious
exhaust ventilation systems. The design
flow rate of exhaust from the Dremel LC40
Laser Cutter must be a minimum of 90
cubic feet per minute (CFM). When using a
Commercial/Industrial Mechanical Exhaust
System be sure to choose correct
ventilation opt When using a Commercial/
Industrial Mechanical Exhaust System be
sure to choose correct ventilation option
on the Touch Screen during the Dremel
LC40 Laser Cutter startup sequence.
= Do not use for
Dremel LC40 Laser
Cutter.
Number of
Bends/Elbows
Allowable Duct Length (feet)
4" Diameter Duct 5" Diameter Duct
Flexible Duct Hard Duct Flexible Duct Hard Duct
Bend radius
at least 2*D
2 33 92 155 290
3 13 72 135 270
4
52 115 250
Bend radius
at least 1.5*D
2 13 72 135 270
3
42 105 240
4
12 75 210
Table 4: Allowable duct length and number of bends/elbows
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