shadowless lightscan betaken to adjust, repair, strengthening,straightening,replacementapproachtreatment.shadowless lightsabove situationiscaused bya common cause ofpump failure,not the whole story, in practice,the faultforthe actual analysis,the principlesto be followedthefirstoutside,do notblindlyoperating.shadowless lightsfor several reasons:electricrotor imbalance;couplingcombined withbad;bearingwearbending;shadowlesslightsrotating part of theloose parts, broken;pipebracketis not strongand other reasons.