Daily Maintenance Guide for Laser Welding Machines

• Check the protective lens:
  Splatter during welding can easily contaminate the protective lens. Inspect it daily. If you find stains or dust on the lens, gently wipe it with a dedicated lint-free cloth and alcohol. Heavily contaminated lenses should be replaced immediately.
• Clean the laser head:
  Use a clean non-woven cloth to wipe the exterior of the laser head to prevent dust buildup that may affect heat dissipation and the optical path.
• Check the cooling system:
  • Water-cooled model: Check water level, and inspect hoses for leaks or kinks
  • Air-cooled model: Check whether the cooling fan is running properly and whether the air intake is blocked
• Check the welding torch and fiber cable:
  Ensure the torch switch is responsive and the fiber cable is not excessively bent or squeezed.

• Clean the entire machine:
  Use an air gun to blow dust from inside the cabinet, especially from the power supply and heat sinks.
• Check the chiller (water-cooled model):
  Verify the water temperature setting (recommended 25–30°C) and check whether the water is clear. If it appears cloudy or has sediment, replace it promptly.
• Check all connections:
  Ensure power cables, signal cables, and water hose connections are not loose.

• Replace cooling water (water-cooled model):
  It is recommended to replace distilled water or dedicated coolant once a month to prevent scale buildup in the pipes.
• Calibrate the optical path:
  If you notice welding trajectory deviation or power loss, perform optical path calibration.
• Inspect consumables:
  Including protective lenses, nozzles, ceramic rings, etc. Keep spare parts in stock to avoid production interruptions.

• ❌ Frequent power cycling during welding
• ❌ Blowing a dirty protective lens with an air gun
• ❌ Never replacing the water in a water-cooled chiller
• ❌ Excessively bending the fiber cable (recommended bending radius > 20cm)
• ❌ Leaving the machine powered on for long periods without use

Maintaining a laser welding machine is not complicated — the key is building good habits. Spending 5 minutes each day on inspection and 20 minutes each week on cleaning can significantly extend the machine's lifespan and reduce downtime. It is recommended to print the above checklist and post it next to the machine for operators to follow.