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To prevent flow alarms and equipment damage after adding coolant to an industrial chiller, it's essential to remove air from the water pump. This can be done using one of three methods: removing the water outlet pipe to release air, squeezing the water pipe to expel air while the system is running, or loosening the air vent screw on the pump until water flows. Properly bleeding the pump ensures smooth operation and protects the equipment from damage.
After adding coolant and restarting the industrial chiller, you may encounter a flow alarm. This is usually caused by air bubbles in the piping or minor ice blockages. To resolve this, you can open the chiller's water inlet cap, perform an air purge operation, or use a heat source to increase the temperature, which should automatically cancel the alarm.
Water Pump Bleeding Methods
When adding water for the first time or changing the coolant, it is essential to remove air from the pump before operating the industrial chiller. Failure to do so may damage the equipment. Here are three effective methods to bleed the water pump:
Method 1 — 1)Turn off the chiller. 2)After adding water, remove the water pipe connected to the low-temperature outlet (OUTLET L). 3)Allow air to escape for 2 minutes, then reattach and secure the pipe.
Method 2 — 1)Open the water inlet. 2)Turn the chiller on (allowing water to start flowing) and repeatedly squeeze the water pipe to expel air from the internal pipes.
Method 3 — 1)Loosen the air vent screw on the water pump (be careful not to remove it completely). 2)Wait until air escapes and water begins to flow. 3)Tighten the air vent screw securely. *(Note: The actual location of the vent screw may vary depending on the model. Please refer to the specific water pump for the correct positioning.)*
Conclusion: Proper air purging is crucial to ensure the smooth operation of the industrial chiller water pump. By following one of the above methods, you can effectively remove air from the system, preventing damage and ensuring optimal performance. Always select the appropriate method based on your specific model to maintain the equipment in peak condition.
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