In summer, many die-making factories face a common problem: the high temperature alarm of the water chiller causes the laser cutting machine to shut down unexpectedly. However, high-temperature alarms of water chillers in summer are not caused by hardware failures. They are common issues resulting from extreme ambient temperatures, blocked heat dissipation systems, and inadequate daily maintenance. This article clearly explains the core causes of high-temperature alarms and provides practical, efficient on-site solutions that machine operators can follow directly for troubleshooting.
I. Core Causes of Frequent High-Temperature Alarms in Summer
Water chillers are equipped with fixed temperature control protection thresholds, which serves as the safe operating limit for the unit. Here is a simple example: if the chiller is set to a cooling water temperature of 35°C with a temperature difference protection value of 5°C, the system will fail to dissipate heat normally when the ambient temperature reaches 40°C or above. As the water temperature continues to exceed the standard, the chiller will automatically trigger a high-temperature alarm and stop working to protect the core components from burnout.
In tropical and subtropical zones, summer temperatures remain high for a long time, and the indoor temperature of die-making workshops can easily exceed 40°C. Combined with dust accumulation and heat dissipation blockages generated during long-term chiller operation, these two overlapping factors lead to frequent high-temperature alarms.
II. Quick Solutions for High-Temperature Alarms
The following operations are simple and easy to implement without professional disassembly skills. Machine operators can complete the procedures independently to clear alarms and restore normal operation of laser die board machines quickly.
(Watch our step-by-step video to solve high-temperature alarms on the water chiller for laser cutting machines.)
Step 1: Replace purified water to ensure basic cooling performance
Purified water is the core medium for chiller cooling circulation. Long-term use without replacement will cause scale and impurity accumulation, block water pipes, reduce cooling efficiency, and aggravate high-temperature alarms. Drain the turbid residual water inside the chiller and refill it with new purified water to provide stable cooling for laser cutting machines.
Step 2: Remove machine covers to unblock heat dissipation channels
Stop the laser cutting machine and cut off the power supply first. Remove the three side panels of the chiller one by one and place them neatly on a clean and flat surface.
Step 3: Clean dust from the dustproof net with an air gun
Use an air gun to blow away all dust accumulated on the dustproof net of the side panels.
Step 4: Clean the cooling filter screen to eliminate heat dissipation blockages
Thoroughly clean the core heat dissipation filter screen of the chiller. Compared with the dustproof net, the filter screen has finer meshes and is more prone to accumulating stubborn dust. Repeatedly blow through the screen gaps with an air gun to ensure no blockages remain in the chiller heat dissipation system.
III. Long-Term Summer Prevention Tips to Avoid Recurring High-Temperature Alarms
- Daily Maintenance: Replace the chiller purified water every 30 days and clean the dustproof net and filter screen every 15 days to maintain unobstructed heat dissipation.
- Environmental Optimization: Place the chiller in a well-ventilated and shaded area and avoid direct sunlight exposure.
- Parameter Adaptation: Fine-tune the chiller temperature control parameters according to the maximum local summer temperature to match the ambient environment and prevent frequent alarms caused by overly low threshold settings.
More than 90% of high-temperature alarms on water chillers for laser cutting machines are caused by high ambient temperatures and blocked heat dissipation, rather than equipment faults. Timely dust cleaning and standardized daily maintenance can effectively solve frequent shutdown and alarm issues, ensuring continuous and stable operation of laser cutting machines.