Omtech USB3020B User manual

USB3020B
Desktop Laser Engraver
User Manual
V20221212
Read Carefully Before Use
Keep for Future Reference

Thank you for choosing our laser equipment.
Your CO₂ laser engraving machine is intended for personal and professional use. When used in accordance with these
instructions, it comprises a Class 1 laser system but some components remain EXTREMELY dangerous. Never disable
the preinstalled safety devices and always use your laser safely and responsibly.
Read this manual carefully before operation. It covers the details of correct installation, adjustment, maintenance,
and—most importantly—safe operation of your new laser. It is intended to be used in conjunction with your engraving
software manual, as the software typically does not only provide image design but also serves as an alternative interface
for the laser settings and machine controls. You and any other users of this device should thoroughly understand BOTH
manuals before attempting to operate the laser.
Keep both manuals for future reference and provide them to ANYONE who will install, operate, maintain, or repair this
machine. Both manuals should be included if this device is given or sold to a third party.
If you have any questions after reading these manuals, please contact us and our support department will address your
concerns as soon as possible.
PREFACE

CONTENTS
1. Introduction ................................................................................................................................................1
1.1 General Information..............................................................................................................................1
1.2 Symbol Guide.......................................................................................................................................2
1.3 Designated Use.....................................................................................................................................2
1.4 Technical Specifications .......................................................................................................................3
1.5 Components..........................................................................................................................................4
2. Safety Information......................................................................................................................................8
2.1 Disclaimer.............................................................................................................................................8
2.2 General Safety......................................................................................................................................8
2.3 Laser Safety..........................................................................................................................................9
2.4 Electrical Safety..................................................................................................................................10
2.5 Material Safety ...................................................................................................................................10
3. Installation................................................................................................................................................12
3.1 Overview ............................................................................................................................................12
3.2 Location Selection ..............................................................................................................................12
3.3 Unpacking ..........................................................................................................................................12
3.4 Water Cooling System ........................................................................................................................13
3.5 Exhaust System...................................................................................................................................14
3.6 Electrical Grounding...........................................................................................................................14
3.7 Main Power Connection .....................................................................................................................15
3.8 Initial Testing......................................................................................................................................15
3.9 Control Computer Setup .....................................................................................................................16
4. Operation..................................................................................................................................................19
4.1 Overview ............................................................................................................................................19
4.2 General Instructions............................................................................................................................19
4.3 Instructions for Specific Materials ......................................................................................................23
5. Maintenance .............................................................................................................................................26
5.1 Overview ............................................................................................................................................26
5.2 Regular Maintenance.......................................................................................................................... 26
5.3 Laser Path Alignment..........................................................................................................................28
5.4 Parts Replacement .............................................................................................................................. 32
5.5 Troubleshooting.................................................................................................................................. 32
5.6 Disposal ..............................................................................................................................................33
6. Contact Information.................................................................................................................................. 33

1
1 Introduction
This manual is the designated user guide for installation, setup, safe operation, and maintenance of your desktop laser
engraver. It is divided into six chapters covering general information, safety instructions, installation steps, operation
instructions, maintenance procedures, and contact information.
ALL personnel involved in the installation, setup, operation, maintenance, and repair of this machine should read and
understand this manual, particularly its safety instructions. Some components are extremely high voltage and/or produce
powerful laser radiation. Substandard performance and longevity, property damage, and personal injury may result from
not knowing and following these instructions.
Your laser engraver works by emitting a powerful laser beam from a glass tube filled with insulating carbon dioxide
(CO₂). The laser beam reflects off three mirrors and passes through a focus lens, after which the focused light can etch
designs into certain substrates. The first mirror is fixed near the end of the laser tube, the second mirror travels along the
machine's Y axis, and the third mirror is attached to the laser head that travels along the X-axis. Because some dust from
the engraving process settles on the mirrors, they require frequent cleaning. They also require periodic readjustment
using their attached positioning screws to maintain proper laser path alignment. A water cooling system—typically a
pump or chiller—must be used with this engraver to dissipate the heat produced by the laser tube. Similarly, an exhaust
system—typically either an external vent or a dedicated air purifier—must be used to remove the dust and gases
produced by the engraving process.
With low intensity use, the provided laser tube has an average lifespan around 2000 working hours before requiring
replacement. The provided power supply should also last around 2000 hours under similar conditions. However,
constantly running your laser above 70% of its maximum rated power can significantly shorten their service lives.
It is recommended to use 10–70% of the full rated capacity to enjoy optimal performance and longevity.
Note that this is a high-voltage device and, as a safety precaution, it is recommended to only touch its components with
one hand at a time during use.
Note that the active laser is invisible to the human eye. Never operate this device while any cover is open to avoid
potentially permanent injury.
Note also that the water cooling system and exhaust system are both absolutely essential to the safe use of this device.
Never operate the engraver without both of these systems working correctly. Cooling water should always be kept clean
and around room temperature, and the exhaust system should always comply with all applicable laws and regulations for
the workplace and environmental air quality.
1.1 General Information

2
This machine is intended for use engraving signs and other consumer products on applicable substrates. This laser can
process a wide variety of materials, including wood and cork, paper and cardboard, most plastics, glass, cloth and
leather, and stone. It can also be used with some specially coated metals. Use of this system for non-designated
purposes or materials is not permitted.
The system must be operated, maintained, and repaired by personnel familiar with the field of use and the dangers of
the machine. The material being engraved must be deemed safe for laser exposure, including its reflectivity,
conductivity, and potential for creating harmful or combustible fumes, etc.
Laser beams are dangerous. The manufacturer and/or seller bear(s) no responsibility and assume(s) no liability for any
improper use of this device or any damage or injury arising from such use. The operator is obliged to use this desktop
laser engraver only in accordance with its designated use, the other instructions in its manuals, and all applicable local
and national laws and regulations.
1.3 Designated Use
The following symbols are used on this machine’s labeling or in this manual:
These items present a risk of serious property damage or personal injury.
These items address similarly serious concerns with regard to the laser beam.
These items address similarly serious concerns with regard to electrical components.
These items address similarly serious concerns with regard to fires.
Protective eyewear should be worn by anyone around this machine during operation.
This product is sold in conformity with applicable EU regulations.
This product contains electrical components that should not be disposed of with regular garbage.
1.2 Symbol Guide

33
1.4 Technical Specifications
Model USB3020B
Laser Tube
Diameter 1.96 in.
Length 27.56 in.
Focal Lens
Diameter 0.47 in.
Thickness 0.08 in.
Focal Length 2 in.
Mirror
Diameter 0.79 in.
Thickness 0.12 in.
Input Power 110–120 V~ 60 Hz
Power Consumption 350W
Rated Power 40W
Expected Service Life
at <40% / 40–70% / >70% Power 2000/1200/600 hr.
Laser Wavelength 10640 nm
Processing Area 8×12 in.
Max. Processing Speed 13.8 ips
Min. Engraving Depth 0.008 in.
Max. Engraving Depth 0.12 in.
Max. Resolution 1000 dpi
Min. Line Width 0.02 in.
Precision ±0.01 in.
50 mm
700 mm
12 mm
2 mm
50.8 mm
20 mm
3 mm
200×300 mm
350 mm/s
0.2 mm
3 mm
0.51 mm
±0.25 mm
Required Operating
Environment
Max. Humidity <70%
Temp. Range 40–95°F
Provided Operating Software LaserDRW, CorelLaser
Supported Operating Software K40 Whisperer, Inkscape
Supported Image Formats .ai, .bmp, .dxf, .emf, .gif, .hpgl, .jpeg, .pdf, .plt, .png, .rd,
Graphic Operating Modes Raster, Vector, Combined
CE, FDA
Net Weight 26 kg
5–35°C
57 lb.
.svg, .tiff, .tga, .wmf

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1.5 Components
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Main Parts
A. Cover—The cover provides access to the main bay for placing and retrieving materials, as well as fixing the laser
path alignment and other maintenance. Power to the laser is automatically cut when the cover is opened.
B. Viewing Window—This acrylic window allows you to monitor the engraving process but only partially absorbs
the high infrared laser and is NOT otherwise protected against it. Always use protective eyewear when observing
the active laser and never stare at it for extended periods.
C. Warnings—These notices supplement the Safety Information chapter of this manual. Read them carefully before
using the machine and contact our customer service or tech support teams if you have any questions or concerns.
D. Temperature Gauges—These monitor the temperature of your laser power source and the tube’s cooling water in
degrees Celsius (±3°C). Do not allow either reading to exceed 38°C. If the temperatures approach this value, stop
work and allow your device to cool before further use.
E. Ammeter—This shows the amount of current being used by the laser tube.
F. Emergency Stop—This button immediately cuts all power to the laser tube in the event of an emergency.
G. Control Panel—The control panel offers hands-on control of your laser’s intensity and includes a manual trigger
for testing and troubleshooting.
H. Caster Wheels—The front wheels include locks to hold the engraver in place.
I. USB Port—This connects to your control computer and its engraving software.
J. Vent—This vent helps keep your engraver’s electrical components from overheating. Do not block it with any
objects and remove any dust that might accumulate.
K. Rear Access Door—This door opens to the laser bay, holding the laser tube and its connections.
L. Laser Tube—This CO₂-filled glass tube is mounted on brackets and immobile. Its connection to the laser power
supply is extremely high voltage and extremely dangerous.
M. Water Sensor—This device provides the reading for the control panel’s water temperature gauge.
N. Power Socket—This socket connects to your main power supply. Be sure that the supply is stable and matches the
voltage on the label above the socket.
O. Ground Connection—This socket must be connected to a safe electrical ground (see §3.6) if your location does
not have a well-grounded 3-prong outlet.
P. Connection Sockets—These sockets connect to your water pump if needed and air assist if a different laser head
with an air assist outlet is installed. It is recommended, however, to use a separate plug on a different fuse for these
devices.
Q. Exhaust Fan—This fan pulls out gases and airborne debris from the worktable, sending it through your vent to a
window or air purifier.
R. Water Tubes—The blue line brings cooling water from your pump or chiller to keep your laser tube cool and stable
and the other line returns it.

Laser Path
A. Laser Tube—This CO₂-filled glass tube is mounted on brackets and immobile. Its connection to the laser power
supply is extremely high voltage and extremely dangerous.
B. 1st Mirror—This adjustable-angle mirror is fixed in place to transfer the engraving laser from the tube to the 2nd
mirror.
C. 2nd Mirror—This adjustable-angle mirror moves with the X-axis rail to allow the laser beam to travel along the
Y axis.
D. Y-Axis Rail—The Y-axis rail supports the movement of the X-axis rail up and down the workbed.
E. X-Axis Rail—The X-axis rail holds the 2nd mirror and supports the movement of the laser head left and right
across the workbed.
F. Laser Head—The laser head holds the 3rd mirror, the focus lens, and the red dot guidance.
G. 3rd Mirror—This adjustable-angle mirror moves with the laser head to allow the laser beam to travel along the
X axis.
H. Focus Lens—This lens directs and focuses the laser to the material.
I. Workbed—The removable workbed is equipped with a holding clamp to hold irregular-shaped objects in place
and a vented level board for regular-shaped products. For removal instructions, see §4.2.
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Laser Tube
Focus Lens (4)
Mirror
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Mirror
2
Mirror
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Control Panel
A. Temperature Gauges—These show the temperature of
the laser’s power supply and cooling water system in
degrees Celsius (±3°C). Do not allow either reading to
exceed 38°C.
B. Ammeter—This shows the amount of current being used
by the laser tube.
C. Emergency Stop—This button immediately cuts all
power to the laser in the event of an emergency.
D. Laser Power Display—This displays the current power
of the laser as a percentage of its maximum intensity.
Adjust this setting accordingly to process various materi-
als. For most materials, an intensity between 20% and
60% is optimal. When aligning the laser beam, you
should use a setting around 11% for safety reasons.
E. 10/1/0.1—These buttons are used to adjust the laser’s
power in increments of 10%, 1%, and 0.1% respectively.
As expected, + increases the power by the matching
increment and − decreases the power by the matching
decrement. Again, running your laser tube above 70%
power can significantly shorten its service life.
F. Laser ON/OFF—This switch controls the power to the
laser tube. Turn it on after and turn it off before the main
power switch.
G. Laser Test Button—This button fires the laser manually.
H. Indicator—This light shines when the laser is active.
I. ON/OFF—This is the main power switch. When
switched to ON, the laser head should move to the top left
corner of the main bay.
Internal Wiring
A. Temperature Sensor—This sensor provides the reading
for your control panel’s “Power” temperature display.
B. Laser Power Supply—This device transforms standard
electricity into the extremely high voltage charge necessary
for the laser tube.
C. Terminals—These terminal blocks hold your wiring in
place for easier part replacement when needed.
D. Motherboard—This circult board controls the engraving
process, responding to commands from your engraving
software or the machine’s control panel.
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8
2. Safety Information
2.1 Disclaimer
Your engraver may differ somewhat from those shown in this manual due to options, updates, etc. Please contact
us if your engraving machine came with an outdated manual or if you have any other questions.
2.2 General Safety Instructions
• Your device should come with safety precaution labels such as those seen below:
If any labels are missing, illegible, or become damaged, they must be replaced.
• Use this laser engraving device only in accordance with all applicable local and national laws and regulations.
• Use this device only in accordance with this instruction manual. Ensure that this manual is included with this device
if it is ever given or sold to a third party.
• DO NOT operate continuously for longer than 2 hours. Stop for at least 30 minutes between uses.
• DO NOT leave this device unattended during operation. Observe the device throughout
operation. If anything seems to be operating strangely, immediately cut off ALL power to the
machine and contact either our customer service or your dedicated repair service. Similarly,
ensure the device is FULLY turned off (including by means of the emergency stop switch) after
each use.
• DO NOT allow minors, untrained personnel, or personnel suffering from a physical or mental impairment that
would affect their ability to follow this manual and the software manual to install, operate, maintain, or repair this
device.
• Any untrained personnel who might be near the device while it is in operation MUST be informed that it is
dangerous and fully instructed on how to avoid injury during its use.
• Always keep a fire extinguisher, water hose, or other flame retardant system nearby in case of
accidents. Ensure that the local fire department's phone number is clearly displayed nearby. In the
case of a fire, cut electrical power before dousing the flame. Familiarize yourself with the correct
range for your extinguisher before use. Take care not to use the extinguisher too close to the flame,
as its high pressure can produce blowback.

2.3 Laser Safety Instructions
When used as instructed, this machine comprises a Class 1 laser system safe for users and bystanders. However the invisible
engraving laser, the laser tube, and its electrical components remain EXTREMELY dangerous. Used or modified without
care, they can cause serious property damage and personal injury including but not limited to the following:
• The laser will easily burn nearby combustible materials
• Some working materials may produce radiation or harmful gases during processing
• Direct exposure to the laser will cause bodily harm including serious burns and irreparable
eye damage
As such,
• DO NOT modify or disassemble the laser and do not use the laser if it has been modified or disassembled by
anyone except trained and skilled professionals. Do not modify or disable this device's provided safety features.
Dangerous radiation exposure and other injuries may result from the use of adjusted, modified, or otherwise
incompatible equipment.
• NEVER leave any part of the machine open during operation. Never interfere with the laser beam, do not place
any part of your body in any part of the laser path during operation, and never attempt to view the laser directly
with the naked eye. When risking exposure to the laser beam, take measures to protect yourself from potentially
reflected laser beams, including the use of personal protective equipment such as protective eyewear specially
designed to filter the specific wavelength of your engraver's laser with an optical density (OD) of 5+.
• DO NOT stare or allow others to stare continuously at the laser beam during operation even when wearing
protective eyewear.
• ONLY use this engraver if its automatic shutoffs are working properly. When you first set up this engraver, and
if you subsequently notice any problems, test them (see below) before undertaking any other work. Do not
continue use if the shutoffs do not occur. Turn off the device and contact customer service or your repair service.
Never disable these shutoffs.
• DO NOT, under ANY circumstances, use this laser engraver if the water cooling system is not working correct-
ly. Always activate the water cooling system and visually confirm that water is flowing through the entire system
before turning on the laser tube. If using the provided water pump, ensure that it is placed in a tank full of cool
or tepid distilled water. Do not use ice water or allow the water to become hotter than 100°F (38°C). For best
results, keep it between 60–70°F (15–21°C). Replace heated water or add sealed bottles of frozen water to cool
it while never allowing the system to run without water or allowing the water to become colder than 50°F (10°C).
Immediately stop use if the water cooling system malfunctions.
• DO NOT allow the laser power supply to exceed 100°F (38°C). If the supply approaches this temperature, cease
operation for at least 30 minutes to allow it to cool.
• DO NOT use generic coolant or antifreeze in your cooling water, as they may leave corrosive residues and solidify
inside your hoses and piping, causing malfunctions and even explosions. Use custom laser-safe formulations or use
and store your engraver in a climate-controlled area.
• DO NOT leave potentially combustible, flammable, explosive, or corrosive materials nearby where they could
be exposed to the direct or reflected laser beam.
• DO NOT use or leave sensitive EMI equipment nearby. Ensure the area around the laser is free of strong
electromagnetic interference during any use.
• ONLY use this machine for working the materials described in the Material Safety section of this manual. The
laser settings and engraving process must be properly adjusted for specific materials.
• Ensure the area is kept free of other airborne pollutants, as these might pose a similar risk of reflection,
combustion, etc.
9

2.4 Electrical Safety Instructions
• ONLY use this device with a compatible and stable power supply with less than 5% fluctuation in its voltage.
• DO NOT connect other devices to the same fuse, as the laser system will require its full amperage. Do not use
standard extension cords or power strips. Use only surge protectors rated over 2000J.
• ONLY turn on the power to this device when it is well-grounded, either via a firm connection to
a 3-prong outlet or via a dedicated grounding cable firmly connected to the ground cable
connection on the machine’s rear. Do not use an ungrounded 3 to 2 prong adapter. The device's
grounding should be checked regularly for any damage to the line or loose connections.
• The area around this laser engraving device should be kept dry, well ventilated, and environmentally
controlled to keep the ambient temperature between 40–95°F (5–35°C). For best results, keep
the temperature at 75°F (25°C) or below. The ambient humidity should not exceed 70%.
• Do not handle the water pump (or the water in which it is submerged) while it is attached to its power supply. Place
it in water before connecting it to power and disconnect it from power before removing it.
• Adjustment, maintenance, and repair of the electrical components of this device must be made ONLY by trained
and skilled professionals to avoid fires and other malfunctions, including potential radiation exposure from
damage to the laser components. Because specialized techniques are required to test the electrical components of
this marking system, such testing is recommended only by the manufacturer, seller, or repair service.
• Unless otherwise specified, ONLY undertake adjustment, maintenance, and repair of the device when it is turned
off and disconnected from its power supply. Always wait for the laser tube to fully cool before performing any
cleaning of its surfaces or other adjustment.
2.5 Material Safety Instructions
• Users of this laser engraving machine are responsible for confirming that processed materials can withstand the
heat of the laser and will not produce any emissions or byproducts either harmful to people nearby or in violation
of local or national laws or regulations. In particular, do not use this device to process polyvinyl chloride (PVC),
teflon, or other halogen-containing materials under any circumstances.
• DO NOT use high power settings at very low speeds when engraving highly flammable materials.
Instead, use more repetitions of your design at low power settings to achieve a similar effect. Use
of a pressurized air assist can also help avoid flames and charring.
• Users of this laser engraver are responsible for ensuring that every person present during operation has sufficient
PPE to avoid injury from the emissions and byproducts of the materials being processed. In addition to the protective
laser eyewear described above, this may require goggles, masks or respirators, gloves, and other protective outer
clothing.
• DO NOT ever use this laser engraver under any circumstances if the exhaust system is not working properly. Always
ensure that the exhaust system can remove the dust and gas produced by the engraving process in accordance with all
applicable local and national laws and regulations. Immediately stop use and clean or repair the system if the exhaust
fan or vent pipe begins making more noise than usual or otherwise malfunctions.
• Users must exercise special caution when working with conductive materials as the buildup of their dust and
ambient particles may damage electrical components, cause short circuits, or produce other effects, including
reflected laser radiation.
10

This machine can be safely used with the following materials:
Plastics
• Acrylonitrile Butadiene Styrene (ABS)
• Nylon (Polyamide, PA, etc.)
• Polyethylene (PE)
• High-Density Polyethylene (HDPE, PEHD, etc.)
• Biaxially-Oriented Polyethylene Terephthalate (BoPET, Mylar, Polyester, etc.)
• Polyethylene Terephthalate Glycol (PETG, PET-G, etc.)
• Polyimide (PI, Kapton, etc.)
• Polymethyl Methacrylate (PMMA, Acrylic, Plexiglass, Lucite, etc.)
• Polyoxymethylene (POM, Acetal, Delrin, etc.)
• Polypropylene (PP, etc.)
• Styrene
Other
• Cardboard
• Ceramics, including Dishes, Tile, etc.
• Glass
• Leather
• Paper & Paperboard
• Rubber
• Stone, including Marble, Granite, etc.
• Textiles, including Cotton, Suede, Felt, Hemp, etc.
• Wood, including Cork, MDF, Plywood, Balsa, Birch, Cherry, Oak, Poplar, etc.
See §4.3 for the recommended parameters for the most commonly engraved materials.
This machine CANNOT be used with the following materials or with any materials which include them:
• Artificial Leather containing Hexavalent Chromium (Cr[VI]), due to its toxic fumes
• Astatine, due to its toxic fumes
• Beryllium Oxide, due to its toxic fumes
• Bromine, due to its toxic fumes
• Chlorine, including Polyvinyl Butyral (PVB) and Polyvinyl Chloride (PVC, Vinyl, Cintra, etc.), due to its toxic
fumes
• Fluorine, including Polytetrafluoroethylene (Teflon, PTFE, etc.), due to its toxic fumes
• Iodine, due to its toxic fumes
• Metals, due to their conductivity and reflectivity
• Phenolic Resins, including various forms of Epoxy, due to their toxic fumes
• Polycarbonate (PC, Lexan, etc.), due to its toxic fumes
For all other materials, if you are unsure about its safety or laserability with this device, seek out its material safety
data sheet (MSDS). Pay especial attention to information about safety, toxicity, corrosiveness, reflectivity, and
reaction(s) to high heat. Alternatively, contact our support department for further guidance.
11

3.1 Installation Overview
A complete working system consists of the laser engraving machine, its exhaust system, a water tank (not included) with
a pump (included), and a USB cable connected to a control computer with the enclosed engraving software. Users can
also configure other additional accessories to suit their needs.
Use only the hardware, wiring, and power sources that came with or are compatible with this device.
Installing equipment that your device is not designed to work with can lead to poor performance,
shortened service time, increased maintenance costs, property damage, and personal injury.
Please note the specific requirements of your system's installation. Every customer must understand these notes
before installation to execute a proper setup and achieve safe laser performance. If you have any installation
questions or problems, contact our technicians and customer support team.
Any auxiliary equipment must be adjusted to the base machine. Queries may be directed to the dealer or manufacturer
of such equipment.
3.2 Location Selection
Prior to assembling your laser engraver, select an appropriate location for its use.
Be sure that it meets all of the requirements discussed in the Safety Information above. The location should be stable,
level, dry, and climate-controlled to ensure an ambient temperature of 40–95°F (5–35°C) and an ambient humidity of
under 70%. In particular, the temperature and humidity together should not be close to the dew point. It is also advisable
to use a windowless room or to use blinds and/or curtains to avoid exposure to the potential additional heat of direct
sunlight. The location should be free of dust and other airborne pollutants and well ventilated enough to process any
fumes produced by the engraving process in accordance with all applicable laws and regulations. Depending on the
materials to be processed, this may require the construction of a dedicated ventilation system. It should be kept away
from children, sensitive EMI devices, and combustible, flammable, explosive, or corrosive materials. Remove any items
that might block the side vent. The power cord should be plugged into a compatible and stable power source via a
grounded 3-prong outlet. No other item should be drawing current from the same fuse. There should be fire-fighting
equipment nearby, and the local fire department's phone number should be clearly displayed.
It is highly recommended to have an extra work table nearby in order to avoid placing objects on or directly adjacent to
the machine, which could become a fire or laser hazard.
3.3 Unpacking Your Engraver
Your engraving machine arrives in a controlboard box with its accessories (including this manual) packaged on top
of your engraving machine. Install the caster wheels if you wish to use them. Check that you have received all of the
following: a power cord, a ground wire, a USB cable, a USB flash drive with engraving software included, a water
pump and water piping, an exhaust pipe with a hose clamp, a tube of silicone sealant, an acrylic focusing tool, a
ceramic testing resistor, a roll of double-sided tape, and this manual. Carefully remove any foam packaging material
and nylon ties from the laser tube and axes. You may keep the packaging in case of a future return but, if you do
dispose of it or any accessories, be sure to do so in compliance with applicable waste disposal regulations.
3. Installation
12

3.4 Water Cooling Installation
The provided water pump is essential to your engraver's performance and longevity. When this laser works
without a properly maintained cooling system, its glass tube WILL explode from excess heat.
NEVER touch or adjust your engraver's water supply while the pump is connected to its power supply.
To install your pump, fill a dedicated tank with distilled water. The tank should always hold at least 2 gallons (7.5L) of
water. Using deionized or tap water will gradually degrade the quality of your engraver and may even cause dangerous
mineral buildup in the cooling system. NEVER use generic antifreeze for the same reason. Use custom laser-safe
formulations or use and store your engraver in a climate-controlled area.
Connect the blue hose that came preinstalled on your engraver directly to your pump and completely submerge the
pump in your water tank. Place the other tube into the tank in such a way that the returning water flows into the tank
without splashing or other problems.
Connect the water pump to its power supply. For best results, use a power outlet on a separate fuse from the engraver
itself. If no such outlet is available, the pump can also be plugged into a dedicated socket located on the back of the
engraver. Once the plug is plugged in, water should begin to run through your machine and back into your tank.
ALWAYS obtain visual confirmation that the water is flowing through the laser tube before starting your laser.
NEVER allow the water in the tank to become too hot to cool the laser. Heat damage can occur quickly and severely
shorten the life of the laser tube. Periodically check the water’s temperature on the built-in digital display. For best
results, keep it between 60–70°F (15–21°C). If the water begins to come near 104°F (40°C), replace it with cooler water.
Either replace it in stages or turn off the laser during this process: never allow the laser to operate without a constant
flow of cooling water. It is also possible to add sealed bottles of frozen water to your tank to keep the water cool but
never allow the water to become ice cold itself, as this could shatter the heated glass CO₂ tube as well.
As an alternative to manually adjusting the water in your tank, you may also use an industrial water chiller to supply
temperature-controlled water to your machine. We recommend the CW-3000 9L chiller (not included). If using it with
this engraver, follow its separate manual and plug it into an outlet on a separate fuse from the engraver itself.
Remember to periodically check the laser power source’s temperature on the built-in digital display, ensuring that it
never exceeds 100°F (38°C). If the laser power source approaches this temperature, shut down the engraver and let it
rest for at least 30 minutes.
13
Inlet
Outlet

3.6 Electrical Grounding
This device employs a powerful laser. As discussed in the Safety Information above, it is extremely high voltage
and potentially dangerous, so users must securely ground it to avoid the buildup of static electricity. Using a standard
3-prong outlet will provide sufficient grounding. If you do not have access to a 3-prong outlet, you MUST use the
grounding cable and ensure its proper connection. The far end of the cable should be securely connected to a metal
rod driven at least 8 feet (3 m) deep into soil located at least 5 feet (1.5 m) from the machine. The resistance along
the line should be no greater than 5Ω.
Poor grounding WILL cause equipment failure and create a serious electrical shock hazard. The manufacturer
and/or seller bear(s) no responsibility and assume(s) no liability for any damage, accidents, or injuries
caused by bad grounding connections.
3.5 Exhaust System Installation
Install the provided exhaust pipe on the fan, as shown below. The pipe can be expanded to a full length of
about 5 feet (1.5 m). The other end of the pipe should be connected to a dedicated purifier or (if the fumes
are not harzardous and meet local and national air safety standards) placed out a window.
NEVER operate the machine in a closed room and NEVER operate the laser if the vent is not purifying or
removing the fumes produced by the target material. Research materials before use and never operate the
laser on any (such as PVC, teflon, or other halogen-containing substances) that can produce corrosive,
hazardous, or even deadly fumes.
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Solid Bar
Ground Cable
8 Feet (3 m)

3.7 Main Power Connection
Confirm that the labeling beside the connection socket on the machine matches your power supply. Connect one
end of the main cable to the connection socket and the other end to a grounded outlet. Under NO circumstances
should you switch on the device if the voltages do not correspond.
Fluctuation along the line should be less than 5%. If this is exceeded, the fuses will blow. They are located in the
connection socket and are accessible from the exterior. Similarly, do not connect this device to standard extension
cords or power strips. Connect it directly to a grounded outlet or use a surge protector rated over 2000J.
3.8 Initial Testing
Emergency Stop
Because of the risk of fire and other hazards during engraving, this engraver includes a large and easy-to-reach
emergency stop button near the control panel. Press it down to stop the laser tube instantly.
When your engraver arrives, its e-stop should be pressed down and must be pulled up to allow the laser to function.
You should test that it works properly before conducting ANY other work with your machine. Start the water cooling
system, place a piece of laserable scrap material on the workbed, close the cover, and press the laser test switch to
fire the laser. Hit the emergency stop button and observe whether the laser stops instantly. If the laser continues to
fire, the emergency stop is not working and must be replaced before the engraver can be used. Turn off the machine
and contact customer service.
Cover Shutoff (Interlock)
Because of the risk of blindness, burns, and other injury from direct exposure to the invisible engraving beam, this
device also shuts off the laser automatically when the protective cover is raised during operation.
After ensuring that the emergency stop button works, you should also test that the cover shutoff works properly before
conducting any other work on your machine. Start the water cooling system, place a piece of laserable scrap material on
the workbed, close the cover, and press the laser test switch to fire the laser. Release the button. Taking care not to
expose yourself to seeing or being hit by any possible reflected laser light, open the cover as little as possible and attempt
to fire the laser again. If the laser fires, the automatic shutoff is not working and must be repaired before the engraver
can be used. Turn off the machine and contact customer service.
Laser Path Calibration
Although our factory calibrates your entire system during assembly, it is possible for the laser tubes, the focus lens,
and/or one or more of the mirrors to be jostled out of alignment during shipment. As such, it is recommended that you
perform an optical alignment test as part of setting up your machine. Be especially mindful NOT to look at the laser
directly during this initial process. See the Maintenance section below for step-by-step guidance.
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3.9 Control Computer
See your software manual for details on the requirements for the control computer. The control computer should
be connected using the provided USB cable via the port marked "PC". If you choose to use your own USB cable,
do not use one longer than 15 feet (4.5 m) to avoid possible interference on the line.
Install LaserDRW onto this computer from the flash disk provided in your accessories pack. For details on this
installation, consult the software’s separate manual.
Familiarize yourself with the software’s image design features and laser control settings before using it to operate
your device. The software should be correctly configured but if it does not automatically work with your engraver,
go to its main toolbar and select Engrave.
Select Device Initialize and the following menu should open:
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The "Mainboard" and "Device ID" fields should match your machine. These numbers are located on the engraver’s
motherboard. To check them, first turn off and unplug your engraver. Unscrew and open the control panel.
The motherboard should be located along the front wall of this compartment.
Find the device ID in the white box along one side of the board. Find the mainboard ID in the text on the other end
of the board.
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