Flow alarms of water chiller in handheld laser welding or laser cleaning machines can interrupt operations and affect performance. These alarms often indicate issues with the water cooling system or wiring. This article outlines the main causes of flow alarms and provides clear, actionable solutions to resolve them effectively.

Primary Causes of Flow Alarms

1. Low Water Level or Water Chiller Alarm: The water chiller may have insufficient water or an internal fault that triggers an alarm.
2. Feature Enabled Without Wiring: The flow monitoring feature is enabled, but no wiring is connected to relay the signal.
3. Incorrect Wiring: Faulty or improper wiring can lead to false flow alarms.

Step-by-Step Solutions

1. Check the Laser Machine Water Chiller for Alarms

Problem:
The water chiller, which is essential for cooling the system, may trigger alarms due to a low water level or internal faults. These issues can cause the handheld laser machine to display a flow alarm.

Solution:

• Step 1: Inspect the water chiller’s alarm codes displayed on its panel.
• Step 2: Refer to the water chiller’s user manual to identify the specific fault indicated by the code.
• Step 3: Resolve the fault as per the manual’s guidance, such as refilling the water reservoir if the water level is low.

Ensuring the water chiller is operating correctly is critical for maintaining adequate cooling and avoiding flow alarms.

2. Verify the Signal Wiring Between the Water Chiller and the System

Problem:
If the water chiller’s alarm signal is not properly wired to the handheld laser machine’s system, or if the feature is enabled without any wiring, the system will trigger a flow alarm.

Solution:

• Step 1: Check if the water chiller alarm signal is connected to the laser system. If no connection exists, either connect the wiring or disable the feature in the system settings.
• Step 2: Confirm that the functionality set in the water chiller matches the system’s requirements. The system and water chiller must communicate seamlessly to avoid false alarms.

Proper signal wiring ensures accurate detection of water chiller alarms and prevents unnecessary flow alerts.

3. Inspect and Correct Wiring for the Flow Alarm

Problem:
Incorrect wiring between the water chiller and the handheld laser machine can cause false alarms or prevent the flow alarm function from working properly.

Solution:

• Step 1: Confirm that the water chiller is connected to the normally open port.
• Step 2: Ensure that the flow alarm port is configured to receive a -24V signal.
• Step 3: If any wiring errors are found, reconnect the wires to the correct terminals, ensuring proper signal flow.

Accurate wiring is essential for reliable operation of the flow monitoring system.

Get Supports from Rayno Laser

Flow alarms in handheld laser welders and cleaners are often caused by low water levels, misconfigured settings, or improper wiring. By systematically addressing these causes, you can quickly resolve the issue and restore smooth operation.

• Regularly monitor and maintain the water chiller to prevent low water level or internal faults.
• Ensure that the water chiller is correctly wired and that its settings align with the system’s requirements.
• Double-check all wiring connections to guarantee proper signal flow and avoid false alarms.

By following these steps, users can effectively troubleshoot and resolve flow alarms, minimizing downtime and ensuring the machine’s performance. If issues persist, consider consulting the manufacturer or a qualified technician for further assistance.