SECTION 3: Trouble Shooting GuideA. When any problem occurs the first thing to do is check all fuses that are involved in the trouble area. A blown fusecan cause unusual operations and metering indications that are difficult to define.B. The next thing to do is measure voltages at component terminals and thereby determine if the component isfunctioning. For instance, there should be 120 volt at terminals 1 & 2 on the undervoltage relays when the generatoris running to keep the breaker from shunt tripping. If the voltage is present and yet the breaker shunt trips, theundervoltage relay is probably faulty.C. The following trouble shooting guide will be helpful:SYMPTONCHECKCAUSE&REMEDYGenerator breaker shuntFuse F1, 2, 4Fuse blown, replacetrip off and voltmeterdoes not read on V1-2while generator isrunning, frequency meternot working properly.Generator breaker shunt120 VAC at UVRReplace UVR if 120trip while engine isvolts is on terminalsrunning (no reverse1 & 2power)Relay BR not operatingJumper terminalsproperlyTBS-3,4 for Generator1. TBS-3,4 forGenerator 2. TBS-5, 6for Generator 3.If jumper correctsproblem replace relax.BRTrip shore powerbreaker off if it isOn.Shore power breakerCheck that allJumper TED4-7 towill not closeGenerator breakersTBS-9. If breakerare offcloses a "b" contactin one of theGenerator breakersis open. Check each"b" contact onTBB 1,2,&3 terminals4 & 6Check phaseChange leads onrotationshore power forproper rotation.
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