TM 5-6115-593-12TO 35C2-3-463-1Table 5-5. Automatic Control Module Troubleshooting (Operator/Crew Level)-ContinuedMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONStep 2. Connect a jumper wire between TB4-1 and TB4-5 on automatic control module.If generator set starts, automatic control module is probably at fault. Refer automatic control module to nexthigher level of maintenance.If generator set does not start, then it is most probably at fault (refer to paragraph 4-10).2.GENERATOR SET STARTS BUT OUTPUT DOES NOT CONNECT TO MAIN POWER BUSS WHEN NORMALPOWER FAILS (SINGLE UNIT OPERATION).Step 1. Check AC voltmeter and frequency meter on generator set or remote control module.If voltage or frequency is out of tolerance, (± 3 percent frequency, ± 10 percent voltage) then generator set ismost probably at fault (refer to paragraph 4-10).If voltage and frequency is within tolerances, proceed to next step.Step 2. Connect a jumper wire across TB3-1 and TB3-2 (assuming generator in suspect is connected to set #1terminals per ACM/GEN interconnection diagram).If generator set output connects to main power buss, automatic control module is most likely at faultproviding 120 V.A.C. is present at TB2-5. Refer automatic control module troubleshooting to next higherlevel of maintenance.If generator set out put does not connect to main power buss, then generator set is most probably at fault(refer to paragraph 4-10).Table 5-6. Automatic Control Module Troubleshooting (Organizational Level)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1.GENERATOR SET DOES NOT START WHEN NORMAL POWER FREQUENCY GOES OUT OF TOLERANCE(SINGLE UNIT OPERATION).5-17
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