Can the sealing performance of the motor be improved on its own?
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The fans in the cooling towers of our company’s wastewater recycling system operate in a steam and water environment. This was not taken into account during the initial selection process, nor was the supplier aware of it; the fan motors use motors with an IP44 protection rating. The old motors get damaged due to exposure to water, which is really annoying. I was wondering if it’s possible to improve these motors in some way. What are everyone’s opinions?
Just replace it with a fan motor designed specifically for cold water towers; such motors are available from cold water tower manufacturers.
Definition of IP protection rating: IP stands for Ingress Protection. The first digit of the rating, such as IP6_, indicates the dust protection level (6 means no dust can enter; see the table below). The second digit, such as IP_5, indicates the water protection level (5 means protection against water sprays; see the table below). Protection against solid particles – The first digit defines this aspect: 0 means no protection. No special protection. 1 Protects against solid foreign objects with a diameter of 50 mm and larger. Objects with a large protective surface area, such as hands (not protected against deliberate intrusion). 2 Protects against solid foreign objects with a diameter of 12mm and larger. Protects fingers or other objects with a length of no more than 80 mm. 3 Protection against solid foreign objects with a diameter of 2.5 mm and larger. Tools, metal wires, etc., with a protective diameter or thickness exceeding 2.5 mm. 4 Protection against solid foreign objects with a diameter of 1.0 mm and larger. Metal wires or strips with a protective thickness greater than 1.0 mm. 5 Protect against dust. It is impossible to completely prevent dust from entering, but the amount of dust that gets in will not affect the normal operation of the equipment. 6 Dust-proof. No dust enters. Preventing liquid intrusion – The second digit defines the description: 0 means no protection. No special protection. 1 Protection against water droplets (vertically falling water droplets). 2 Protection against water droplets when the device is tilted at 15 degrees. Vertically falling water droplets should not cause damage. 3 Protect against splashing water. Water splashing at 60 degrees from either side of the vertical line should not cause damage. 4 Protection**. When the device is tilted 15 degrees from its normal position, aiming at it from any direction **should not cause damage. 5 Protection against water jets. Water jets directed at the device from any direction should not cause damage. 6 Protection against large waves. Large waves or strong water jets entering the equipment should not cause damage. 7 Protection against water immersion. When immersed in water under the defined pressure and time, no amount of water that could cause damage should penetrate. 8 Protection against flooding. The device can be submerged in water for extended periods under the conditions specified by the manufacturer. The test method for the waterproof test (IP_5) and the main test condition definitions are as follows: Test method – The inner diameter of the nozzle is 6.3 mm, and it is placed at a distance of 2.5–3 m from the test sample. Flow rate: 12.5 l/min ±5%. Test duration: – 1 min/m2, but at least 3 minutes in total. Testing conditions – Spray the test sample from every feasible angle. Select IP65 for the motor based on your operating conditions
Thank you! The most effective solution is indeed to replace the motor, but then these three will be wasted!