Regular maintenance is crucial to ensure the longevity, performance, and safety of your Chinacnczone handheld laser welding machine.
Based on the official manual, this guide provides a comprehensive overview of daily maintenance practices to keep your machine in optimal condition.

1. Cooling System Maintenance
When to Add Antifreeze
The cooling system is vital for preventing overheating during operation. Here’s what you need to know:
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Coolant Type: Use purified water. It is recommended to use purified drinking water and replace it every month.
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Antifreeze Requirement:
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When the ambient temperature is between -10°C and 0°C, use a 30% ethanol solution by volume. Replace every two months.
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Below -10°C, a dual-system chiller with heating function is required.
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Mold Prevention: To avoid mold growth and pipe blockage, add 10% ethanol by volume when using purified water.
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Water Temperature Setting: Set the chiller to 25°C ± 1°C (no need to adjust in summer).
⚠️ Warning:
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Do not set the water temperature too high—it may cause laser malfunction.
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Do not set it too low—condensation can form inside the laser or optical cable, leading to irreversible damage.
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Always ensure the cooling system is running normally and the water temperature is stable before starting the laser.
2. Lens Cleaning
The protective lens at the front of the welding gun shields the focusing lens from spatter and debris. Regular cleaning is essential.
Tools Required:
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Dust-proof gloves or finger cots
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Polyester cotton swabs
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Absolute ethanol
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Rubber air blower or clean compressed air
Cleaning Steps:
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Wear Finger Cots: Use on the thumb and index finger of your left hand.
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Moisten Swab: Lightly spray absolute ethanol on a polyester cotton swab.
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Hold the Lens: Gently hold the edge of the lens—avoid touching the surface.
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Wipe Gently: Wipe in one direction only (e.g., bottom to top or left to right). Do not wipe back and forth.
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Blow Dry: Use clean compressed air to blow away any residue.
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Inspect: Ensure no ethanol, dust, or impurities remain on either side of the lens.
🔍 Frequency: Check the lens before each use. Clean as needed.
3. Lens Removal and Installation of Chinacnczone handheld laser welding machine
Lens replacement should be done in a clean, dust-free environment. Always wear dust-proof gloves.

Removing the Protective Glass:
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Pinch both sides of the drawer-style glass holder and gently pull it out.
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Rotate the protective glass cover 90 degrees and remove it.
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Take out the old protective glass.
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Clean the drawer and sealing ring. Replace the ring if damaged.
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Place the new or cleaned lens into the drawer (no front/back orientation).
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Reattach the cover and reinsert the drawer into the welding head.
📌 Note: Pay attention to the orientation when reinserting the drawer to avoid misalignment.

4. General Daily Checks
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Coolant Level: Ensure the water level is between ⅔ of the gauge.
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Gas Connections: Check for leaks and ensure gas purity (99.99%).
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Electrical Connections: Verify all cables are secure and undamaged.
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Safety Clip: Ensure it is properly attached to the workpiece (welding) or gun head (cleaning/cutting).

5. When to Seek Professional Help
If you encounter any of the following, contact technical support:
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Persistent cooling system alarms
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Lens damage beyond cleaning
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Error codes displayed on the laser source (e.g., red or yellow indicator lights)
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Unusual noises or performance issues