Screw air compressor shows that the host is not balanced

Screw air compressor display host imbalance may have the following reasons:

1. power issues

1. unbalanced voltage or large power supply fluctuation: This may be due to power supply problems in the peripheral power grid. Use a multimeter to measure the input voltage. Under normal circumstances, the error of the three-phase input voltage should be kept within 10%. If the input voltage is unbalanced, it may directly cause the current imbalance fault.
2. Poor contact of one phase of contactor: This will also affect the current balance. If the current measured by the clamp ammeter is unbalanced, but the voltage display is normal, the problem may be in the contactor. In this case, replacing the contactor may solve the problem.

2. motor problem

1. motor current unbalance: This may be caused by a problem with the motor winding or rotor, excessive internal loss of the motor, or bearing wear. It can be judged by checking whether the three-phase winding of the motor is normal.
2. Excessive motor load: Excessive load may cause voltage imbalance. In this case, the load should be reduced as much as possible, such as turning off some less commonly used equipment or reducing the load power.

3. controller or current transformer fault

failure of the controller or current transformer may also cause the screw air compressor host to be unbalanced. It is necessary to check whether the controller and current transformer are normal. If the actual measured current is normal, but the panel shows a fault, this may be due to the current transformer detection fault. At this time, the relevant parameters need to be calibrated in the control panel.

4. wiring problems

1. the wiring port is loose or the wire is not compressed.: This will also cause the air compressor host to be unbalanced. Need to check whether the power supply, wiring port is loose, whether the wire is tight. If loose or poor contact is found, it needs to be tightened or rewired.
2. Incorrect power supply wiring problems such as phase loss or open circuit. If the failure is caused by a power supply problem, the power line needs to be repaired.

5. installation and maintenance issues

1. installation Issues: For example, the foundation is not strong or uneven, causing the host to vibrate during operation, thereby affecting its balance. It is necessary to reinforce the foundation or adjust the position of the host to ensure that it is in a stable and horizontal position.
2. Improper maintenance: Some parts inside the main engine of the screw air compressor, such as bearings, gears, etc., may be worn or damaged due to long-term use or improper maintenance, resulting in unbalanced operation of the main engine. The main engine of the screw air compressor should be maintained and maintained regularly, and the worn and damaged parts should be checked and replaced.
3. Lubrication system problems: If the lubricating oil is insufficient or of poor quality, it may also cause the imbalance of the main engine. The oil level and quality of the lubricating oil should be checked regularly and replenished or replaced in time.

6. other factors

the main shaft of the screw air compressor may be bent due to the influence of external force, or there is a bending degree in the manufacturing process, which is also an important reason for the imbalance of the main engine. It needs to be repaired or replaced according to the actual situation, and to ensure the correct installation of the main shaft during the installation process.

If the screw air compressor has a host imbalance fault, it can be judged and processed according to the above points. If you cannot solve the problem, it is recommended to contact professional maintenance personnel for maintenance.