Industrial Dehumidifier Kosmen Maintenance Guide

Kosmen Đà Nẵng
Published: 14/07/2025, 14:00 - Updated at 14/07/2025, 14:10

An industrial dehumidifier is a vital device for maintaining ideal humidity levels in production environments. Like other electronic devices, regular maintenance is essential to ensure optimal performance and prolong the machine's lifespan. Over time, dust accumulation can reduce dehumidifying efficiency, increase power consumption, and lead to malfunction. This article provides step-by-step maintenance instructions and important usage tips.

1. Periodic Maintenance Guide

 Note: Always turn off the machine and unplug it before starting any cleaning process to ensure safety.

Basic Maintenance Steps:

Step 1: Clean the air filter – This is the part that accumulates the most dust and directly affects airflow into the machine. It should be removed and cleaned regularly using clean water or a vacuum cleaner.

Step 2: Protect the sensors – Cover the sensors during cleaning to prevent water or physical impact from damaging them.

Step 3: Clean the evaporator and condenser coils – Use water to remove accumulated dust, grease, and mold. This helps improve heat exchange efficiency and ensures clean air output.

Step 4: Clean the water tray, drain pump, and drain hose – Make sure wastewater drains properly to avoid odor buildup or issues affecting the machine.

Step 5: General inspection – A technician team should check components such as the compressor, fan motor, thermal relay, and capacitor to ensure the machine runs smoothly and reliably.

Industrial Dehumidifier Maintenance Guide in Just 5 Easy Steps

Industrial Dehumidifier Maintenance Guide in Just 5 Easy Steps

Notes When Performing Maintenance on Industrial Dehumidifiers

To keep the dehumidifier operating efficiently, users should clean basic components regularly every 1–2 months. However, for more advanced technical tasks, it is essential to have support from professional technicians to ensure safety and prolong the device’s lifespan.

Below are the components customers can clean themselves:

Cleaning the pre-filter:

  •  Remove the filter from the machine.
  • Use a vacuum cleaner or rinse with water (for washable filter types).
  • Allow it to dry completely before reinstalling.
  •  Clean every 1–3 months depending on dust levels in the environment.

Cleaning the water tank (Applicable for Kosmen KM-90S):

  • Unplug the machine and remove the water tank.
  •  Empty the tank, then rinse with water and mild soap.
  • Dry thoroughly to prevent mold, then reattach it properly.

Wiping the machine’s exterior:

  • Use a soft damp cloth to wipe off dust and dirt from the outer casing.
  • Avoid using harsh cleaning chemicals.

Cleaning the water tray, drain hose, and drain pump (if applicable):

  • Gently check and clean to avoid clogs in the drainage system.
  • Ensure water drains smoothly without causing odor or leakage.

Components that require professional technician service:

  • Cleaning the evaporator and condenser coils: These are critical heat exchange parts that require precise handling. Do not disassemble or spray water on them, as it may damage internal electrical components.
  • Protecting the sensors: During deep cleaning, technicians will cover the temperature and humidity sensors to prevent damage.
  • Full system inspection: Includes checking the compressor, fan motor, thermal relay, capacitor, control board, etc., to detect and resolve potential issues early.

Recommendation:

Perform deep maintenance every 6 months or follow the service schedule from the warranty center to ensure your dehumidifier operates efficiently, saves energy, and maintains long-term durability.

2. Routine Maintenance Schedule

Component

Every 1–3 Months

Every 12 Months

Air Filter

Clean the filter

 

Compressor

Check vibration and operating temperature

Check electrical cables for damage or looseness

Heat Exchanger

Clean ducts and accessories

Clean evaporator and condenser thoroughly

Fan

Check operation and noise levels

Lubricate, balance as needed

Seal

Check for cracks

Replace if worn or cracked

Thermostat

 

Test temperature and humidity sensors

Sensor

Wipe with dry cloth

Calibrate or replace if inaccurate

3. Important Notes – Please Read Carefully

Installation Guidelines:

  • Place the machine upright on a flat, stable surface.
  • Maintain minimum clearance: 30cm from walls or heat sources, 80cm at the air intake, and 300cm at the air outlet.
  • Do not block air intake or exhaust.

Electrical Connection Guidelines:

  • Must be installed by a qualified technician and comply with local electrical standards.
  • Do not exceed the rated voltage/frequency listed on the label.
  • Power supply variation should not exceed ±10%.
  • A circuit breaker and grounding are required.
  • Use a fuse rated 10A–16A / 250V and standard electrical cables. Do not use damaged cords.

4. Usage Precautions

Placement and Conditions:

  • For indoor use only. Do not use inside cars, boats, or closets.
  • After transporting or cleaning, let the machine stand for 1 hour before plugging it in.

Electrical Safety:

  • Do not share the power outlet with high-power appliances.
  • Avoid strong impacts or dropping the machine.
  • Do not unplug while the machine is operating; always turn it off via the control panel first.

Things to Avoid:

  • Do not spray water, flammable chemicals, or insecticides on the machine.
  • Do not immerse the machine in water or place it in excessively damp areas.

For Children and the Elderly:

  • Children above 8 years old and elderly individuals may use the machine under supervision.
  • Do not allow children to play with or clean the machine unsupervised.

5. Error Code Explanation

Error Code Meaning Solution

E1The ambient temperature sensor is malfunctioning.Replace the temperature sensor to resume normal operation.
E2The ambient humidity sensor is malfunctioning.Replace the humidity sensor to allow accurate humidity detection and control.
E3Phase sequence error, phase loss, or incorrect power line connection. (This error does not apply to 220V units and typically occurs with industrial models.)Contact your supplier to check and correct the power phase sequence.
E4Wastewater tank is full.Remove the tank, empty the water, and reinstall it properly.
E5High voltage protection is activated.Contact your supplier to check the refrigerant (gas) pressure.
E6Low voltage protection is activated.Contact your supplier to check the refrigerant (gas) pressure.
HIAmbient humidity is too high (above 95%).Ensure all doors and windows are properly closed.
LOAmbient humidity is too low (below 30%).It is not recommended to use the dehumidifier at this time. Turn off the unit and restart it when necessary.
HLAmbient temperature is too high or too low.Use the dehumidifier only within the temperature range of 5°C to 38°C.

6. Troubleshooting Guide

Issue

Cause

Solution

Machine does not operate

Power loss, blown fuse, full tank

Check power, replace fuse, empty tank

Low dehumidifying performance

Wrong settings, blockage, extreme temperature

Adjust settings, remove obstacles, close windows

Not dehumidifying on restart

Compressor protection delay

Wait 3 minutes, then restart

Water leakage

Loose or clogged drain hose

Tighten and clean the drainage system

Condensation on casing

High ambient temperature and humidity

Normal – unit will defrost automatically

Slight vibration on start/stop

Mechanical movement during switching

Normal phenomenon

Contact Support:

  • Head Office: No. 27B, Street No.12, Hiep Binh Ward, Ho Chi Minh City
  • Hanoi Office: NV 4.7, Cau Buou New Urban Area, Thanh Liet Ward, Hanoi City
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  • Hotlines: Northern Region: 0766 899 799 - Southern Region: 0965 210 874 - Central Highlands: 0961 061 076 - 0935 696 695 (Central Vietnam)
  • Website: kosmen.com.vn