3. Maintenance
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CO2 Laser Machine © 2018 Laguna Tools 8/27/2018
EN
Diameter / Material / Focal Length
Purpose
20mm / PVD ZnSe / 25.4mm
Optimized for engraving
20mm / PVD ZnSe / 50.8mm
General Use (Standard Lens)
20mm / PVD ZnSe / 101mm
Optimized for cutting or on round surfaces without
Rotary attachment.
Installing/Removing Focal Lens
Tools Need:
N/A
1. Unscrew the assembly by loosening the (3) head assembly set and remove from
the Laser head. You may need to move the Z-axis down for clearance.
2. Unscrew the lense removal set(4) from (8) nozzle to expose the (7) locking nut.
3. Carefully remove the lock ring with a small rod (a screwdriver will work).
4. Change or clean the focal lens as needed. To clean:
a) Using a microfiber cloth and alcohol or appropriate glass lens cleaner, gently
wipe the surface. To clean the mirrors, the same method is advised.
5. Re-assembly the assembly as shown. Note that the convex side of the lens is
facing up.
3.3 Troubleshooting
Behavior
Possible Causes
Possible Solutions
Laser machine will not turn
on
1.
Breaker is on defeated position
2.
Improper input power
1.
Flip Breaker Switch
2.
Confirm Power supply meets Machine
Specifications
All systems are powered
but Laser will not fire
1.
Interlock Switch (door sensor)
defeated
2.
Chiller Alarm defeated
3.
Water is flowing in the wrong
direction
1.
Close door, inspect switch
2.
Troubleshoot Chiller Unit
3.
Confirm direction of water flow (should
be with direction of laser beam, towards
first mirror)
Laser fires but does not
process work surface or
quality of process is poor
1.
Mirror is not aligned
2.
Focal distance is not set
correctly
3.
Incorrect Focal Lens
4.
Focal Lens is dirty
5.
Non-compatible material
1.
Perform mirror alignment procedure
2.
Adjust focal spacing to 7mm from work
surface.
3.
Use lens with 50.8mm focal length
4.
Clean focal lens and ensure that the Air
Assist System is working.
5.
No soln.
3.4 FAQ
Q: What materials can the CO2 Laser machine cut/engrave?
A: The processing capabilities of laser machines are distinguished by the
wavelength of the laser beam and the power output of the laser tube. CO2 Lasers
can cut and engrave most materials other than metals. By contrast, Fiber Lasers are
engineered to produce a laser beam that can process metals. The 40watt CO2 laser
can cut and engrave most polymers and polymer composites: plastics, woods,
leathers, fabrics, papers, etc. It can also engrave several surfaces that it cannot cut,
including anodized or coated metals, glass and stone. Please see Appendix 4, CO2
Laser Machine Single Pass Parameters for RDWorks, for a sample of what this
machine can process. The operator must consider hazardous and problematic
byproducts of some of these polymers. For example, polycarbonate should not be
cut because it produces a toxic gas that can be harmful to the operator and will
damage components of the laser machine. See the safety section for other
hazardous materials and always check the Material Safety Data Sheet (MSDS) prior
to cutting any questionable materials.
Q: How often do I need to change the Laser Tube?
A: The Laser Tube is classified as a consumable part and has a rated lifespan of
5000 hours of use. However, several variables affect the lifespan of the laser tube,
like the power setting used and the quality of water coolant used. NOTICE: Only
deionized or distilled water should be used with the chiller/laser tube cooling
system.
Q: How often do I need to change the water in the chiller unit, and can I leave the
water in the laser tube when not in use?
A: The water should be changed on a monthly (30 days) basis. The water can be left
in the tube as long as the water cannot freeze. If you are operating this laser in
