T a b l e 4 - 8 . L o a d B a n k T r o u b l e s h o o t i n gMALFUNCTION1.2.3.4.5.6.Load bankdoesnotapply load to genera-tor set.Over temperaturereset switch doesnotremain engaged inONposition while inmanual load rejectmode.Over temperaturereset switch does notremain engaged inON positionwhile inautomatic load rejectmode.Load bank doesnotdisconnect fromgenerator set withrated kilowatt meterabove 30 W while inautomatic load rejectmode.Fanand motor ae-sembly notoperatingproperly.Indicator doesnotilluminate when loadback is in operation.PROBABLE CAUSEa.b-“c.a.b.c.d-“a.b.a.b.a.—b-“c.a.b-“c.Refer to malfunction 2and 3 below.Defective load selectorswitch.Defective wiring harness.Defective fan and motorassembly.Defective thermostatswitch.Defective over tempera-ture reset switch.Defective wiring.me as 2 above.If rated kilowatt meterwithin load limits of30 W, defective loadreject relay.Defective load rejectswitch.Defective wiring harness.Defective fan end motorassembly.Defective diodebridge.Defective wiring harness.Defective lamp.Defective light.Defective wiring harness.Corrective ACTIONa.b-“c.a.b-“c.d.a.b.a.b-“a.b-“c.a.b-“c.Refer to malfunction 2 and3 below,Test andreplace switch if defective. (Referto p a r a g r a p h 4 - 4 4 . )Repsir or replace wiring harness. (Referto p a r a g r a p h 4 - 4 3 . )Check fan and motor assembly for properoperation as in 5 below.Test switch andreplace if defective. (Refer top a r a g r a p h 4 - 4 7 . )Test switch and replace if defective, (Refer top a r a g r a p h 4 - 4 4 . )Repair or replace wiring. (Refer to p a r a g r a p h4 - 4 3 . )Same as 2 above.Test relay and replace if defective (higher levelof maintenance required).Test switch andreplace if defective. (Refer top a r a g r a p h 4 - 4 4 . )Repair or replace wiring harness. (Referto p a r a g r a p h 4 - 4 3 . )Test assembly andrefer to next higherlevel of maintenance, if defective,Test bridge and replace diode(s) if defective.(Higher level of maintenance required. )Repair or replace wiring harness. (Referto p a r a g r a p h 4 - 4 3 . )Test lamp snd replace if defective. (Refer top a r a g r a p h 4 - 4 4 . )Test light and replace if defective. (Refer top a r a g r a p h 4 - 4 4 . )Repair or replace wiring harness. (Referto p a r a g r a p h 4 - 4 3 . )4 - 3 7
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