If the packing on a pump has just been replaced and it leaks slightly at startup, what should be done initially?

When a pump has just had its packing replaced and there is a slight leak at startup, monitoring for excessive leaking and adjusting appropriately is the best initial course of action. Newly installed packing can often require some time to properly settle and form a seal. It's not uncommon for there to be a small amount of leakage as the packing compresses and conforms to the shaft during initial operation.

By monitoring the situation, you can determine whether the leakage is within acceptable parameters or if it becomes excessive, which would require further action, like an adjustment of the packing. This approach allows for a more measured response and avoids unnecessary actions like replacing the packing again if the initial leak is minor and likely to correct itself with some operational time.

Other options might lead to unwanted consequences. Replacing the packing again immediately could be unnecessary if the issue is minor and transient. Ignoring the leakage altogether could lead to more significant problems if the leak worsens or if it indicates an underlying issue. Running the pump at full speed before ensuring everything is operating correctly could exacerbate any leaks and damage the pump or surrounding components. Thus, monitoring and adjusting as needed is the most prudent initial response.