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1.8 Diode Laser Maintenance

Proper maintenance ensures consistent performance, longer lifespan, and safe operation of your YUMI L Series (Lasers).


1.8.1 Cleaning the Optics

LaserGRBL Work Area Preview

Frequency: Weekly

Steps: 1. Power off the machine and unplug it. 2. Remove the laser head cover if needed. 3. Clean the lens and mirrors gently with a lint-free cloth or lens paper. 4. Use isopropyl alcohol if necessary. 5. Avoid touching optics with bare fingers.


1.8.2 Checking the Laser Module

Frequency: Monthly

Steps: 1. Inspect the laser module for dust or damage. 2. Ensure the module is securely mounted. 3. Check connectors and cables for wear. 4. Verify cooling system is operational.


1.8.3 Air Assist (If Installed)

Belt Tension Adjustment

Frequency: Weekly

Steps: 1. Check that the pump is working. 2. Inspect tubing for blockages or cracks. 3. Clean the nozzle.


1.8.4 Safety Checks

Frequency: Before each session

Steps: 1. Verify key switch. 2. Check enclosure integrity. 3. Ensure proper ventilation and airflow.


1.8.5 Belt Tension Check

Belt Tension Adjustment

Frequency: Every 2โ€“3 months (or if accuracy issues appear)

Steps: 1. Power off the machine.
2. Gently press the belts (X and Y axis) at the midpoint โ€” they should be firm but not overly tight.
3. If the belt feels too loose (sags more than ~3โ€“4 mm), adjust the belt tensioner.
4. Ensure both sides are equally tensioned to avoid skewed movement.
5. Inspect belts for wear, fraying, or missing teeth. Replace if damaged.


1.8.6 Enclosure Maintenance (If Installed)

L-A4 Enclosure

Frequency: Monthly

Steps: 1. Inspect the fabric and zipper for wear, dust, or damage.
2. Clean transparent panels (if present) with a soft cloth to keep good visibility.
3. Check the zipper runs smoothly; clean it if debris is stuck.
4. Ensure the enclosure is stable and properly positioned around the machine.
5. Verify ventilation is not obstructed and airflow is maintained.


1.8.7 Tips for Longevity

  • Keep optics clean.
  • Avoid exceeding recommended power for materials.
  • Give breaks during long operations.
  • Store machine in a dry, dust-free environment.