A commutationem spark rationes varietur, oportet esse in numerosis factoribus, inveniat pelagus ratio, potest emundare culpa, amplio in reversing. Reprehendo sicco commutatione deterioration ratio. Vocavit solet reversing conditionibus normalize reprehendo et temperatio, in reversing accidente curatio modum communiter in DC motricium moderatoris, ejus principium est ut sequitur. In a dc motor controller was put into operation or in the operation of the past, the reversing has been is normal, but in the later operation process, gradually deteriorate or sudden deterioration, show in front of the deterioration of the reversing motor controller, the sliding contact, the structure of the motor controller and motor controller parts work is normal. Quidam pars in processus of motricium moderatoris est currens, in operationem condicionem mutata, aut elit mutationes, quae destrui in illapsum contactus, mutavit normalis statu reversing et ducunt ad deteriorem reversing. Si haec factores, quod afficit commutating motricium moderatoris ducere comprehensive inspectionem et temperatio, ut eius potest restituere originali normalis statu, reversing scilicet potest normalis. Test ad reversing ad normalization est DC motricium moderatoris ad reversing causam accidentis et troubleshooting de communi modum, quod includit in sequentibus principalis items: I. Resistit mensurae inter duo commutator. Commutator pendulum ad metimur III. Peniculus in neutrum reprehendo IV infra. Peniculus Poli pice, drama et crack reprehendo et temperatio V. Peniculus et Peniculus Opus perficientur probat