Why The Screw Air Compressor head rotor is rusty？

How to avoid screw air compressor head rotor rusty？

This is the Solutions when the rotor of the screw machine is rusty. In order to avoid the loss of production due to rusting of your screw machine, the following precautions are taken.

First, we need to know why the screw main unit accumulates water:

1 Friends who have used air conditioners know that the air conditioner has a drain pipe. Normally, the air conditioner can discharge 20-25 liters of water in one night. This water is the moisture in the atmosphere condensed by the air conditioner compressor.

2 When the screw machine is running, the compressed air also contains condensed water in the atmosphere. When the machine is running continuously, the oil temperature gradually rises to 80℃, and the condensed water in the oil begins to evaporate, and the water is discharged into the air storage tank with the compressed air.

3 Due to the selection or the extremely small gas consumption of the user, the operating loading rate of the screw machine is seriously low, which causes the screw machine oil temperature to fail to reach above 80℃ for a long time, and the oil begins to deteriorate and emulsify, causing the rotor in the main unit to rust and get stuck.

Solution

1 Appropriately extend the unloading time of the air compressor (no-load delay), and artificially raise the oil temperature to above 85℃ (90℃ is most suitable) for operation.

2 Before and after the air compressor is installed, the user's gas usage should be fully understood. A return visit must be made to new customers one week after installation to check the customer's actual operating rate and observe the oil status. This is very important!

3 When the gas consumption is small, the condensed water in the oil and gas barrel should be drained regularly after the screw machine is shut down for 6 hours until the oil is seen flowing out. (How often the discharge is determined by the use environment of the screw machine)

4 For users with particularly small gas consumption, adjust the opening temperature of the cooling fan appropriately.

5. Drain the water in the oil and gas pipe once a week. Draining method: open the oil and gas barrel drain valve before starting the machine in the morning until a small amount of lubricating oil flows out, and close the valve.

6. If there is water accumulation, oil emulsification, rotor rusting and other situations that cause machine damage, the factory will not provide warranty! Please check regularly

7. For permanent magnet machines, set the lower limit frequency higher (80%-90% of the upper limit frequency, the factory setting is about 40%), and increase the speed so that the internal temperature reaches 80 degrees-90 degrees when the air compressor is operating normally.

9. Release the air, increase the air output of the air compressor and increase the load of the air compressor, so that the internal temperature of the air compressor rises to 80-90 degrees.

10. Check whether there is water in the oil and the operating temperature of the air compressor (80-90 degrees) every day