When using electric hoist abnormal sound stage how to do?

Stage electric hoist is used because of the time is too long or used improperly, often abnormal sounds, not only to a certain extent affect the use, but also affect the work efficiency, according to different abnormal sound stage  lift hoist  can determine fault, the following detailed description of your .

(1) abnormal noises occur in the control loop, issued a "hum" noise, usually contactor fails to deal with fault contactor maintenance, overhaul can not be replaced, treatment, self-noise elimination.
(2) Stage electric  manual block  motor makes any abnormal noise, immediately stop and check whether the motor running single phase, or bearing damage, coupling axis errors and "sweep chamber" faults, these will make the motor abnormal noise, different faults location and sound level and sound a difference,

Single-phase operation, the entire issue of regular motor suddenly strong suddenly weak "buzzing" sound; while the bearing is damaged when the bearing near the issue along with the "thump - thump" of the "buzzing" sound. The coupling axis errors, or when the motor slight sweep chamber, the entire motor makes high "buzzing" sound, when not accompanied by shrill voice. In short, the difference should be based on the noise, to find fault, for itemized repair and restore normal performance of the motor when the motor fault untreated, prohibit the use of gourds.
(3) the stage  Wire rope hoist  abnormal noise from the gearbox issue, reducer fails, then should stop to check, first determine the reducer gearbox or bearing on whether to raise the oil prior to use, whether to use periodic replacement of oil, If no lubrication required, reducer will not only generate excessive "buzzing" sound, but also excessive wear or damage gears and bearings.