Troubleshooting of electric wire rope hoist
1, start the electric wire rope hoist, motor does not turn, can not lift heavy weights
The excessive overloading, not allowed to use overloading
The voltage than the rated voltage lower than 10%, such as voltage normal
The electrical fault, breaking of wire or poor contact, repair electrical appliances and circuit
The brake wheel and the rear end cover of corrosion killed off, the brake wheel is not open, remove the brake wheel, the cleaning of corroded surface
The motor sweep chamber, according to the fault number 9
The wire is too small, the replacement of lead
2, the brake is not reliable, gliding distance exceeds the specified requirements
As for the brake ring wear or other reasons, the spring pressure, the spring pressure adjustment
The brake ring and the rear cover cone bad contact, remove grinding
The braking surface has oil, remove for cleaning
The brake ring loose, replace the brake ring
The pressure spring fatigue, replace the spring
The coupling movement is ineffective or death card, check the connection part
The conical rotor movement is too large, in accordance with the provisions of regulation
3, motor overheating
The overload, load reduction using
The job is too frequent, reduce the number of processes
The brake clearance is too small, operation when the brake ring is not completely torn off, equivalent to the additional load. Re adjust
4, speed reducer noisy
The poor lubrication, disassembly and maintenance
5, start the electric wire rope hoist motor hum
The power supply and motor deficit, repair or replace the contactor
6, the weight to the air, can not start again after stopping
The low voltage fluctuations, voltage recovery after the restart
The overload lifting, unloading use
7, start the electric wire rope hoist can't stop, or to the limit position, still don't stop
The AC contactor contact welding, quickly cut off the total power overhaul or more
The limit device failure, for AC contactor
The limit device inside the head wrong, maintenance limiter circuit
8, reducer
Between the box body and the box cover, the sealing ring assembly is bad or failure damage, remove the repair or replace sealing ring
The screw connection not tighten, tighten the screws
The gas excess, according to the provisions of the gas
Between the 9 conical, motor rotor or stator gap is too small friction (called sweep chamber)
Factory products are not allowed to "sweeping", "the main reason sweep chamber" is: the motor shaft bearing ring wear, shift the axial direction of a rotor core, or custom core displacement. Remove the replacement of the bearing ring, a uniform gap between stator and rotor cone, each side is 0.35~0.55mm (small motor gap) or sent back to the factory maintenance.