Troubleshooting hoist way

Troubleshooting hoist way
1,  Hoist equipment  starts, the motor does not turn, can not lift heavy objects
⑴ excessive overloading, overloading is not allowed to use
⑵ voltage is lower than the rated voltage of more than 10%, such as the voltage returns to normal
⑶ faulty electrical appliances, wires disconnected or bad, repair electrical and line
⑷ brake wheel and the rear cover rust killed, do not open the brake wheel off, remove the brake wheel, cleaning corroded surfaces
⑸ motor sweep chamber at fault number nine treatment
⑹ wire too small, the replacement of lead
2, the brake is not reliable, down requirements over a distance
⑴ by braking ring wear, or other causes, the spring pressure is reduced, the spring pressure adjustment
⑵ brake cone ring and end cap is bad, remove the grinding
⑶ braking surface with oil, remove the cleaning
⑷ brake ring loose, replace the brake ring
⑸ pressure spring fatigue, replace the spring
⑹ couplings ran ineffective or stuck, check the coupling part
⑺ conical rotor runout excessive, adjusted according to the provisions
3,  Wire rope hoist  motor temperature is too high
⑴ overload to use, load shedding use
⑵ jobs too frequently, reducing the number of operations
⑶ brake gap is too small, running is not fully disengaged when the brake ring, equivalent to additional load. Readjust
4,  wire rope hoist  gearbox noise is too large
⑴ poor lubrication, demolition overhaul
5, start the motor hums
⑴ less power and phase motors, repair or replace the contactor
6, the weight rose to the sky, no longer starts after stopping
⑴ low voltage fluctuations, such as voltage recovery after the start
⑵ overload lifting, load shedding use
7, starts not stop, or to the limit position, still stop
⑴ AC contactor contact welding, quickly cut off the main power repair or demolition
⑵ stopper failure, for AC contactor
⑶ pick the wrong head stopper inside, repair limiter circuit
8, reducer oil spill
⑴ between the box and lid, seal assembly is bad or invalid damaged, repair or replace the seals removed
⑵ mounting screws not tightened, tighten the screws
⑶ excess fuel, according to the provisions refueling
9, the motor conical rotor or stator gap is too small to grazing (called sweep chamber)
Electric hoist manufactured products is not allowed to "sweep bore" happen "sweep bore" the main reason is: the motor shaft support ring wear, axial displacement of the rotor core, or a custom core displacement. Remove the replacement of the support ring, the stator and rotor cone a uniform gap between each side of

0.35 ~ 0.55mm (small motors small gap) or returned to the manufacturer in the overhaul.