Big Loss Field Balancing
We were requested to witness field balancing on a primary air fan being performed by third party. They were using handheld vibration data collector. Our engineer installed temporary vibration sensors at both drive end (DE) and non-drive end (NDE) bearings of the fan plus a phase marker sensor and used multiple channels portable vibration analyzer for data collection. Once the unit was started, rubbing was clearly identified in just a few minutes and informed operator to stop