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What to do if the high-pressure Roots blower cannot be started?
Release time:
2022-03-08
High-pressure Roots blowers generally have no issues when starting. If there is a failure to start, what could be the cause? Today, let's explore this. Confirm the power supply connection of the high-pressure Roots blower. Check that the external circuit of the high-pressure Roots blower is intact for power supply and control lines. Inspect for incorrect electrical wire connections according to the nameplate. Ensure that the metal connections are good. If the motor connection plug on the terminal block is loose, reconnect it according to the wiring nameplate instructions. If there is a disconnection in the connection line of the high-pressure Roots blower, contact the after-sales department; do not disassemble the motor for inspection without permission. Disconnection of the capacitor wiring or damage to the capacitor can lead to disconnection of the internal winding of the motor. ① The biting area of the Roots blower is too large. Generally, the normal biting area of the impeller of the Roots blower is about 2/3. If it exceeds this biting area, it will cause excessive biting force between the gears, leading to a failure of the blower to rotate. ② Rust condition of the Roots blower With prolonged use, if the Roots blower is not maintained properly, or if the medium being transported has a high moisture content, it can easily cause rust on the inner wall of the blower. In severe cases, the impeller and the wall or casing may rust together, or large areas may flake off due to rust, causing the impellers to jam. At this point, measures such as kerosene soaking or gasoline washing can be used to treat the rust, followed by readjusting the gap. ③ Foreign objects in the Roots blower During the operation of the Roots blower, if large particles are present in the transported medium, they can easily block parts of the cavity, preventing the blower equipment from rotating. At this time, we need to remove foreign objects from the blower cavity, check the gap between the impellers, and also check where the foreign objects have fallen to prevent the failure from occurring again. ④ Damage to the impeller of the Roots blower If the impeller of the Roots blower is damaged, it can cause the impellers to bite against each other and not rotate, leading to the blower not being able to turn. In this case, we should recheck. ⑤ Damage to the bearings of the Roots blower. When the bearings of the Roots blower are damaged, it can easily cause changes in the internal gaps of the blower, leading to impeller friction. In severe cases, it can prevent the blower from rotating, which is an indirect cause of the change in blower gaps and a common reason for the blower not being able to rotate. ⑥ Deformation of parts of the Roots blower. If this phenomenon occurs, it is often due to the poor quality of the purchased parts. Some blower equipment manufacturers excessively reduce costs, leading to substandard component strength. Different prices for the same model may indicate issues such as thickness of castings and overly thin shaft necks. Additionally, if the Roots blower equipment is left unused for a long time, it can also cause some deformation of the parts. ⑦ Damage to the motor of the Roots blower. When the motor of equipment that has been idle for a long time fails, the blower cannot rotate. At this point, we should check the motor and eliminate the fault.
High-pressure Roots blowers generally have no problem starting. If there is a failure to start, what could be the cause? Today, let's understand this.
- Confirm the power supply connection of the high-pressure Roots blower.
- Confirm that the external circuit of the high-pressure Roots blower is intact for power supply and control lines.
- Check for incorrect connections in the electrical wiring according to the nameplate.
- Confirm that the metal connections are good.
- If the motor wiring plug on the terminal block is loose, connect the plug according to the instructions on the wiring nameplate.
- If the connection line of the high-pressure Roots blower is broken, contact the after-sales department. Please do not disassemble the motor for inspection on your own.
- The capacitor wiring of the high-pressure Roots blower may be broken or the capacitor may be damaged, leading to a break in the internal winding of the motor.
① The biting area of the Roots blower is too large.
Generally, the normal biting area of the Roots blower impeller is about 2/3. If it exceeds this biting area, it will cause excessive biting force between the gears, resulting in the blower being unable to rotate.
② Rust condition of the Roots blower.
With the extension of usage time, if the Roots blower is not maintained properly, or if the medium being transported has a high water content, it can easily cause rust on the inner wall of the blower. In severe cases, the impeller and the wall or casing may rust together, or large areas may fall off due to rust, causing the impellers to jam. At this time, measures such as kerosene soaking and gasoline washing can be used to treat the rust of the blower, and then the gap should be readjusted.
③ Foreign objects in the Roots blower.
During the operation of the Roots blower, if large particles of the transported medium enter the cavity, it can easily block part of the cavity, causing the blower equipment to be unable to rotate. At this time, we need to remove the foreign objects from the blower cavity, check the gap between the impellers, and also check where the foreign objects have fallen to prevent the failure from happening again.
④ Damage to the impeller of the Roots blower.
If the impeller of the Roots blower is damaged, it will prevent the impellers from engaging and rotating, causing the blower to be unable to rotate. In this case, we should recheck.
⑤ Damage to the bearings of the Roots blower.
When the bearings of the Roots blower are damaged, it can easily cause changes in the internal gaps of the blower, leading to impeller friction. In severe cases, it may cause the blower to be unable to rotate. This is an indirect cause of the change in the blower's gaps and a common reason for the blower's inability to rotate.
⑥ Deformation of the parts of the Roots blower.
If this phenomenon occurs, it is mostly due to the poor quality of the purchased parts. Some blower equipment manufacturers excessively reduce costs, leading to substandard component strength. The same model may have different prices, which may indicate issues such as thickness of castings and overly thin shaft necks. Additionally, if the Roots blower equipment is left unused for a long time, it can also cause some deformation of the parts.
⑦ Damage to the motor of the Roots blower.
When the motor of equipment that has been idle for a long time fails, the blower cannot rotate. At this time, we should check the motor and then eliminate the fault.
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