How to Clean an Evaporative Air Cooler?

With the continued high temperatures of summer, Evaporative Air Coolers (commonly known as eco-friendly air conditioners) have become essential temperature control devices in many factories, workshops, and large supermarkets. However, many users have found that after a period of use, the airflow seems to decrease, and there may even be an unpleasant odor. This is usually due to excessive dust accumulation on the evaporative cooling pad or water tank.

I. Why Clean Evaporative Air Coolers Regularly?

Since evaporative air coolers work by drawing in outdoor air and filtering it with water for cooling, dust, pollen, and other foreign objects in the air easily adhere to the internal evaporative cooling pad (cooling water curtain). If not cleaned regularly:

• Decreased Cooling Effect: Clogged pores in the cooling pad reduce water evaporation efficiency.
• Increased Energy Consumption: Increased motor load leads to higher electricity costs.
• Unpleasant Odors: Long-term water and dust accumulation can cause bacterial growth.
  
  

II. Standard Cleaning Procedure: Only Five Steps

Before starting cleaning, always disconnect the power supply to ensure safe operation.

1. Disassemble the evaporative cooling pad (core step)

The four sides of an Evaporative Air Cooler are typically composed of evaporative cooling pads. Press the latches and gently lift and pull out the evaporative cooling pad assembly.

2. Deep rinse the evaporative cooling pad

Use a hose of clean water to rinse from the inside out. Note: Do not use a high-pressure water gun, as this may damage the fiber structure of the evaporative cooling pad. If there is heavy buildup, you can soak and rinse it with a specialized environmentally friendly air conditioning cleaner.

3. Clean the bottom water tank

Open the drain valve to drain any remaining wastewater. Wipe away any sediment and scale at the bottom of the water tank with a cloth. Ensure the float valve is flexible to prevent water supply failure due to blockage.

4. Clean the filter and housing

If your model has a front dust filter, remove and clean it. Simply wipe the housing with a damp cloth to maintain the appearance of the equipment and prevent corrosion.

5. Reassemble and check the self-cleaning function

Reassemble the dried evaporative cooling pad. After powering on, it is recommended to first activate the Evaporative Air Cooler's “automatic cleaning” mode (if your model supports it) to perform a final internal flush using the circulating water system.

III. Maintenance Tips: How to Extend Equipment Lifespan?

• Automatic Cleaning Setting: It is recommended to set the automatic cleaning frequency to once every 8-12 hours.
  
  
• Drying Before Shutdown: Before long-term shutdown, turn off the water pump and run the fan function alone for 15 minutes. This will dry the evaporative cooling pads and effectively prevent mold growth.
  
  
• Regular Professional Inspection: For evaporative air coolers installed in large-scale projects, it is recommended to contact the manufacturer for a comprehensive system inspection every spring and summer.
  
  

Mastering the cleaning methods for evaporative air coolers not only makes indoor air fresher but also significantly improves cooling efficiency and extends equipment lifespan. As an energy-saving and environmentally friendly cooling option, proper maintenance makes your investment more valuable.