The correct start-up of a Centrifugal pump is a key step to ensure its efficient and reliable operation. Ignoring critical steps may lead to immediate damage or long-term performance issues. Therefore, a systematic approach must be taken each time the Centrifugal pump is started. The following is provided for user reference.
1、A successful startup begins long before the power is switched on.
The first and most fundamental step is to ensure that the Centrifugal Pump is properly primed; the pump casing must be completely filled with the liquid to be pumped. Operating a Centrifugal Pump without prime, or “dry running,” can cause severe damage to the mechanical seals and impeller due to a lack of cooling and lubrication.
2、Following this, a thorough inspection of the isolation valves is necessary. The suction valve should be fully open, and the discharge valve should be partially or fully closed to minimize the load on the motor during startup. This practice reduces the inrush current, protecting the motor of the Centrifugal Pump from electrical stress.
3、Attention must also be paid to the alignment of the pump and motor, and the lubrication of bearings should be checked to ensure they are in good condition. Any unusual noise or vibration during the initial rotation, which can be checked by briefly turning the pump by hand, must be investigated before proceeding.
4、Once these pre-start checks are satisfied, the Centrifugal Pump can be started. After the motor is energized and the pump reaches its operational speed, the discharge valve should be opened gradually. This controlled opening allows the Centrifugal Pump to develop pressure smoothly and stabilizes the flow, preventing water hammer and sudden load changes on the system.
5、During this period, closely monitor the pump's parameters such as discharge pressure, motor current, and any unusual sounds or leaks.A stable reading indicates that the Centrifugal Pump is operating as intended.
In conclusion, adhering to a disciplined startup routine is not merely a recommendation but a requirement for maximizing the service life and efficiency of any Centrifugal Pump. This proactive approach prevents catastrophic failures and ensures continuous, smooth performance.
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