GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 87)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
Issue 5 September 2011 Troubleshooting Preparations 12 - 1
12 Troubleshooting Preparations
Preliminary
Introduction This section provides information needed in preparation for locating and
interpreting visual indicators to help identify problems.
When replacing a part does not correct the problem or visual indicators
do not identify a defective part, notify Lineage Power Technical
Support.
Safety Review all safety instructions and warnings in the Safety section of the
GPS Installation Guide before troubleshooting the GPS 4848/100.
Warning
Hazardous ac and dc voltages and/or energy are present. Caution
should be exercised. Tools must be insulated to help prevent
accidental contact with live surfaces.
Coordinate all troubleshooting activities with other personnel that
may be working on the system.
Tools The following tools are necessary in order to troubleshoot the GPS
4848/100:
• 3/16-inch (5 mm) Allen-head wrench
• Insulated hand tools
• Calibrated digital voltmeter (DVM) 
(0.05% accuracy on dc scale)
• ESD wrist strap