Study Guide Answer Key

Here are the answers to the Jan. 31, 2022 edition of TPO's Exam Study Guide: What condition may occur if old packing not removed completely, before repacking a pump?The answer to this question is B, shaft scoring. When changing the packing on a pump, it is imperative to remove all old packing from the pump before installing new packing. Shaft scoring will occur if this not done. This will lead to premature pump failure and leakage. Proper pump packing is vital for proper pump operation and maintenance. Replacing a shaft or pump can be a costly repair/replacement. What mA signal should an operator expect if