A decrease in the reliability of ESP internal components due to aging factors normally causes ESP to be underperformance. Most of the ESP parts will reach its limit after 8 to 10 years of operation due to deterioration and wearing, thus degrading the ESP performance and results to deficiency of dust collection.

To bring back ESP to normal operating conditions,  it is rather necessary to renew aging ESP and have some performance improvement to ensure that all the internal parts inside the ESP are working together properly in order to deliver an efficient and effective ESP operating performance.