What can be caused by impeller imbalance or damage?

A. Vibration
B. Overheating
C. Overpressurization
D. Leakage


A. Correct. Common causes of vibration and surging include impeller imbalance or damage, worn bearings, piping pulsation, a misaligned shaft, damaged couplings, and bearing or seal damage.
B. Incorrect. Compressor overheating can be caused by a loss of cooling, improper lubrication, uncooled recycling, or valve malfunction.
C. Incorrect. Compressor overpressurization can occur if the valves associated with the compressor are incorrectly closed or blocked.
D. Incorrect. Leaks are not caused by impeller imbalance or damage.

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