Idle operation of pumps, overload, fan overload, and issues with idle running.

It was the pump that was damaged; it was overloaded. The fan wasn’t running at no load, but it was overloaded

No load means idling, while overload can damage the motor, as the operating parameters are not within the appropriate range.

It is the pump that gets damaged at the pump outlet; pump overload can be explained in this way: a person can only lift 50 pounds of weight, but if they are asked to lift 30 pounds, it’s easy for them. But asking him to pick out 70 jin of items was quite difficult, so he got tired and started sweating. Fever

It is the pump that gets damaged at the pump outlet; pump overload can be explained in this way: a person can only lift 50 pounds of weight, but if they are asked to lift 30 pounds, it’s easy for them. But asking him to pick out 70 jin of items was quite difficult, so he got tired and started sweating. Fever

1. During idling, the load is at its lowest, so the work done is minimal; as a result, the motor is under the least strain and is not damaged； As for pumps, they don’t necessarily get damaged; idling in itself is not a problem. The issue lies in the problems that arise from idling, such as idling with a medium present, which causes the medium to heat up continuously, leading to overheating, vaporization, and cavitation ； If it runs without a medium, it will wear out the machine seal or packing, leading to component wear and subsequent leaks ； The pump will be damaged only when these problems occur; it may not get damaged even if these problems do not arise. 2. Overloading of a pump means operating it beyond its capacity, at high power levels. For a motor, this high power is represented by the product of voltage and current; therefore, overloading equals high power, which in turn equals high current. 3. I have some disagreement with the person above me regarding this issue. I think there are no-load and overload conditions. No-load condition refers to when the valve is closed and no effective work is being done; this is considered no-load. It’s similar to the situation when a centrifugal pump is started with its outlet valve closed – that too is a no-load condition. And overload is also possible. Overload refers to exceeding the motor’s capacity to bear load. Using a motor that is too small may lead to overload; changes in process conditions can cause variations in air volume and air pressure, which may also result in overload.

No load means idling; the pump gets damaged in this case, while the motor is damaged under overload conditions.