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Introduction to the Maintenance Knowledge of Centrifugal Fans

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How to clean the centrifugal fan

The centrifugal fans fail during operation mostly because the operators did not conduct a comprehensive inspection before using the equipment and did not clean the equipment in time after using the equipment later.

If the centrifugal fan is not cleaned, it will have an impact on future use. Many operators who can operate do not necessarily know how to clean. If you don't know how to clean it, it will definitely cause trouble.

How to clean the dust inside the centrifugal fan?

1. The wind wheel can be washed with low-pressure fine water column. When washing, make the wind wheel face down and the end cover face up, just clean the surface of the wind wheel, and do not put it directly into water or other liquids;

2. The fan cannot be disassembled and cleaned. Because of the sealing characteristics of the fan, the inside of the fan does not need to be cleaned;

3. After cleaning the centrifugal fan, wipe the wind wheel with a dry cloth to keep it dry and avoid the equipment from being damp;

4. If you want to prevent failures in the cleaning operation, you must take the correct cleaning method and clean the centrifugal fan regularly.

What are the maintenance methods of centrifugal fans?

The long-term operation of the centrifugal fan is inseparable from reasonable maintenance. However, in the process of maintenance, due to various uncertain factors, it is easy to lead to unsatisfactory maintenance results. What are the maintenance methods of the centrifugal fan?

1. The centrifugal fan needs to keep the air duct unblocked during operation. The power of the centrifugal fan will be overloaded when the air volume is small. Be careful not to use it for a long time in a sealed environment with an insufficient air supply. The current should be regularly monitored.

2. Before using the centrifugal fan, it is necessary to carry out the necessary test run on the fan. This process is to ensure the operation of the fan without failure, and the effectiveness of the fan is guaranteed to the greatest extent.

3. If the fan has not been used for a long time and now is used again, it is necessary to check whether the various parts of the fan are still firm. Once any looseness is found, it must be fastened in time. In this way, during the trial operation of the fan, it will not be unable to use normally due to the loosening of the fan components.

4. Before starting the fan, check whether there are any parts in the centrifugal fan and the pipeline that hinder the rotation. If there is any, it should be removed before starting.

5. After the fan is commissioned and no problems are found, it is put into use. It is necessary to observe the condition of the centrifugal fan regularly. Once an abnormality is found, it must be stopped for inspection immediately.

The difference between PBM IP44 and IP55 protection-grade products

IP is the abbreviation of Ingress Protection and the IP level is the protection level against the intrusion of foreign objects by the electrical equipment shell, mainly referring to the protection against solids and liquids, drafted by the International Electrotechnical Association IEC (International Electro Technical Commission), is an important indicator of the safety protection of electrical equipment.

centrifugal fans

The first number after IP is the dustproof level

Rating

Protection status

Meaning

Level 0 dustproof

No protection

No dustproof ability

Level 1 dustproof

Prevent solid foreign objects with a diameter not less than 50mm

Prevent spherical objects with a diameter of 50mm from entering the shell

Level 2 dustproof

Prevent solid foreign objects with a diameter not less than 12.5mm

Prevent spherical objects with a diameter of 12.5mm from entering the shell

Level 3 dustproof

Prevent solid foreign objects with a diameter not less than 2.5mmm

Prevent spherical objects with a diameter of 2.5mmm from entering the shell

Level 4 dustproof

Prevent solid foreign objects with a diameter not less than 1.0mm

Prevent spherical objects with a diameter of 1.0mm from entering the shell

Level 5 dustproof

Dust-proof status

It can basically prevent dust from entering the shell. If there is dust, the amount of dust must not affect the normal operation and safety of the equipment

Level 6 dustproof

Dust isolation status

Completely prevent dust from entering

The second number after IP is the waterproof level

Rating

Protection status

Meaning

Level 0 waterproof

No protection

No waterproof capability

Level 1 waterproof

Prevents vertical dripping

Vertical dripping does not affect on the product

Level 2 waterproof

Prevents vertical dripping when the housing is tilted at 15°

No effect when water drips from all sides of the housing within 15°

Level 3 waterproof

Showerproof

No effect when water drips from all sides of the housing within 60°

Level 4 waterproof

Splash-proof

No effect of splashing water in all directions of the housing

Level 5 waterproof

Anti-spray

No effect of spraying water in all directions of the housing

Level 6 waterproof

Anti-intense water spray

No effect of strong spraying water in all directions of the housing

Level 7 waterproof

Anti-soaking

Immersed in 1 meter of water depth, after the specified time, no effect

Level 8 waterproof

Anti-high water pressure immersion

Immersed in a depth of more than 2 meters, after continuous immersion, no effect

Level 9 waterproof

Anti-high temperature/high- pressure water spray

Spray high temperature/high-pressure water in all directions of the enclosure with no effect

 

IP55 fans

From the above introduction, we can see that IP55 is higher than IP44 protection level, because the larger the number, the higher the protection level. Therefore, in terms of protection level, IP55 is relatively superior. If customers have certain requirements for the use of centrifugal fans, we can use products with a higher level of IP55 or even IP66. PBM can customize products, and we will carry out waterproof experiments and salt spray tests according to the customer's requirements, the sample will be sent to the customer only after meeting the requirements.

PBM

Contact us for premium centrifugal fans

PBM is a China mainland EC(Electronically Commutated) brushless motor manufacturing and technology consulting company offering an extensive range of EC motors, fans and intelligent ventilation solutions for air-moving precisely and constantly with maintenance-free throughout the life cycle of products in the last decades. If you are in need of waterproof EC fans, please kindly contact us today! 

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