Comments on: Compressed air fail: Extra audit benefits /compressed-air-fail-extra-audit-benefits/ Tips, Trends, Resources, News and Information Thu, 24 Apr 2025 18:09:25 +0000 hourly 1 https://wordpress.org/?v=7.1.2 By: William Ketel /compressed-air-fail-extra-audit-benefits/#comment-475973 Thu, 24 Apr 2025 18:09:25 +0000 /?p=9247#comment-475973 The photo brings out the same problem I found a while ago: The overload relay/sensor was tripping for one of the five identical 10 HP, 3-phase feed pumps for a high pressure hydraulic system. The users had simply been adjusting the trip levels to keep running.Without shutting down, a clamp on ammeter revealed quite different currents among the three phases. Tightening the clamp nut almost a whole turn on one lug solved the problem.The foreman/supervisor had been clueless about the simple cause.

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