Troubleshooting Challenge: Unexpected
2014-11-13 · The pump was driven by a 100-hp, 1800-rpm electric motor — a large HPU, but a fairly simple system. The system pressure was set to 2250 psig with an output flow of 75 gpm. The pump would run for 30 to 60 seconds at a time under pressure, but then all pressure would quickly drop to near 0 psig for 2 to 3 seconds.
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