Troubleshooting Chinacnczone Handheld Laser Cleaner: Quick Fixes for Common Alarms

Chinacnczone continuous handheld fiber laser cleaner are powerful tools for removing rust, paint, and contaminants efficiently and eco-consciously.

However, encountering an alarm can halt your workflow, here’s a clear guide to diagnosing and resolving the most common alarms:

1. Safety Clip Alarm

• Description: The safety clip isn’t making reliable electrical contact with the cleaning gun head or a metal object.

• Fix: This is usually simple! Ensure the safety clip is firmly clamped onto a clean, bare metal part of the workpiece or a dedicated grounding point near your work area. Good contact is essential.

2. Blowing Alarm (Air Assist Alarm)

• Description: The alarm light blinks, and the laser won't fire. This indicates insufficient air pressure for the assist system.

• Fix:

  1. Check your air compressor is running and connected properly.

  2. Look at the pressure gauge on the machine’s back. The pressure needs to be at least 0.1 MPa.

  3. If pressure is low, adjust the pressure-reducing valve knob to achieve 0.2-0.3 MPa (as per startup procedure). Ensure your compressor can deliver the required flow rate (15 L/min).

3. Cool System Alarm

• Description: The alarm light blinks, and the laser is disabled. This signals a problem with the water cooling system.

• Fix:

  1. Check Water Level: Look at the water level gauge on the chiller (usually on the back or side). If it's below the green mark, refill immediately with the correct coolant (distilled/deionized water + antifreeze if needed - see below).

  2. Check Water Flow: Ensure the water is circulating properly. Listen for the pump; check for kinks in the hoses; verify IN/OUT connections are correct. Air bubbles can sometimes cause issues – let the system run briefly to purge air.

  3. Restart: If the level is good and flow seems restored after checking, try restarting the machine.

  4. Persistent Alarm: If the alarm persists after the above steps, contact Scotle after-sales service.

4. Temperature Alarm

• Description: The system displays a high or low-temperature warning.

• Fix:

  1. Check Water Temp Gauge: Look at the chiller's display or temperature gauge. The ideal operating range for the coolant is typically 10°C to 28°C.

  2. High Temp (>28°C): Ensure the chiller is plugged in, powered on, and functioning correctly. Check for blocked air vents or filters on the chiller. Is the ambient room temperature too high? The chiller might be overloaded or faulty.

  3. Low Temp (<10°C): This usually occurs in cold environments. Ensure the correct coolant mixture is used to prevent freezing (see "Antifreeze Requirements" below). Verify the chiller's heating function (if equipped for dual temp) is working if ambient is very low.

  4. Restart: After addressing the temperature issue (e.g., letting coolant warm up/cool down), restart the machine.

  5. Persistent Alarm: If the temperature is within 10-28°C but the alarm remains, or you cannot resolve the temp issue, contact after-sales service.

5. Laser On Button Alarm (Light Output Button Alarm)

• Description: Occurs if the laser enable button on the front panel was left pressed before powering on the laser system.

• Fix:

  1. Power OFF the laser system completely.

  2. Ensure the laser enable button is in the released (out/off) position.

  3. Power the laser system back ON.

  4. Persistent Alarm: If the alarm clears but returns when you try to use the laser, or if it persists after step 3, contact after-sales service.

6. System Timer Alarm

• Description: Indicates an abnormality with the laser's internal clock.

• Fix: Contact Scotle after-sales service directly. This is not a user-serviceable alarm.

7. Lens Temperature Alarm

• Description: The temperature of the optical lenses (collimating, focus, protective) exceeds a safe threshold (default limit is typically 50°C), potentially causing damage. A warning appears on the screen and the light on the handheld gun may turn red.

• Fix:

  1. Stop Operation Immediately: Cease laser cleaning.

  2. Check Cooling: Ensure the main water chiller is operating correctly and coolant temperature is within range (10-28°C). Verify coolant flow.

  3. Allow Cooling: Let the laser head and lenses cool down significantly before attempting further use.

  4. Review Settings: If operating at very high power or duty cycles for extended periods, consider reducing settings. Ensure adequate airflow around the laser head.

  5. Persistent Alarm: If the alarm triggers quickly even after cooling and with good chiller operation, contact after-sales service. (Note: The alarm limit can be viewed/adjusted in the System Parameters menu under "Device paras" with password 666888, but altering it is generally not recommended without consulting support).

Crucial Coolant & Antifreeze Requirements (Prevents Alarms & Damage!):

• Standard Coolant: Distilled or Deionized Water. Replace monthly.

• Prevent Mold: Add 10% Ethanol (by volume) to the purified water to inhibit growth and pipe blockages.

• Cold Environments (0°C to -10°C): Use a 30% Ethanol solution. Replace every 2 months.

• Very Cold Environments (< -10°C): A dual-system water chiller (with heating function) is mandatory. Ensure the cooling system runs uninterrupted. Consult the manual/manufacturer for specific coolant mix guidance.

• Water Temp Setting: The chiller should typically be set to 25°C ±1°C.

• Long Storage: If the machine won't be used for an extended period, DRAIN ALL COOLANT from the laser and chiller. Stagnant water can cause irreparable damage.

Proactive Maintenance = Fewer Alarms:

• Regularly check coolant level and condition.

• Keep air filters clean.

• Ensure clean, dry compressed air at the correct pressure (0.2-0.3 MPa).

• Keep lenses clean using proper procedures (dust-free swabs, isopropanol).

• Visually inspect cables and hoses.

Chinacnczone continuous handheld fiber laser cleaner product link as below 

https://scotlelaser.com/collections/continuous-laser-clean-machine/products/bwt-1500w-2000w-3000w-laser-cleaning-machine-laser-rust-remove-oil-coating-paint