TM 10-5411-201-14T.O. 35E4-178-1Section II.TROUBLESHOOTING PROCEDURES4-4.GENERAL .This Section contains organizational troubleshootinginformation for locating and correcting common malfunctions which may developin shelter electrical system.WARNINGThe shelter contains voltages that are dangerous ifcontacted.Take appropriate precautions when trouble-shooting.Before performing continuity checks orreplacing electrical components, make sure thatelectrical power is disconnected from circuit involved.4-5.TROUBLESHOOTING.Each malfunction for an individual component or unitis listed in paragraph 4-6.The malfunction is followed by a list of tests orinspections which help to determine probable causes and corrective actions totake.The tests or inspections and corrective actions are to be performed inthe order listed in the table.All malfunctions that may occur and all testsor inspections and corrective actions may not be listed.If a malfunction isnot listed or is not corrected by corrective action, notify your supervisor.Unless otherwise noted, when troubleshooting operation of shelter electricalsystem, all switches and circuit breakers shall be placed in operatingpositions with power connected.The electrical system schematic diagram(4-46) and wire list (4-47) are located at the end of Chapter 4, Section III.4-6.ORGANIZATIONAL MAINTENANCE TROUBLESHOOTINGMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1.NO POWER DISTRIBUTION TO SHELTER.Step 1.Check that outside power is properly connected to serviceentrance on power entry panel, check general condition ofcable and connectors.Test operation of power entrypanel.a.Replace defective wiring (paragraph 4-8).b.Replace defective connectors (paragraph 4-8).Step 2.Test operation of main circuit breaker and wiring(paragraph 4-7).a.Replace defective wiring (paragraph 4-7).b.Replace defective circuit breaker (paragraph 4-7).4-2
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