High vibration level of the pump motor
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Is a high vibration level when testing the pump motor alone directly related to the motor’s alignment? Could it be related to uneven stress at the four corner screws?
Check if the motor has soft feet
Does that mean one foot might not be level?
The maximum acceptable deviation is 0.05 mm. Measure the positions of all four bolts; the number of shims under each bolt of the motor should not exceed 5
By \"single motor,\" it means that there is no coupling in place. In such a case, even if there is a soft foot, it shouldn’t happen unless the connection isn’t properly secured. It is recommended to check the inside of the motor. If there is no load, motors that are not particularly large can rotate without foot bolts
3.4mm/S is also within the limit: lol
Test the motor alone or together with the pump? If the motor is tested separately, the vibration level should not be high even without the foot screws being tightened, unless there is a problem with the rotor shaft. If it is integrated with the pump, then check the pump for issues related to the bearings as well as the alignment between the motor and the pump
3.4? It’s not high; it’s within the normal range
Vibration is often the result of several factors acting simultaneously. In many units, the small pumps are installed without any alignment using backup wheels. Additionally, many factors such as foundation and cavitation need to be considered comprehensively.
The coupling of the motor is disconnected; this has nothing to do with alignment. Check whether there are any loose foot bolts, and also examine whether there are any problems with the motor bearings. Use a sound detector to check each location to see where the vibration is strongest