Common Faults and Adjustment of Electric Hoist

Release time:

24-04-09


Fault

The main reason

Processing method

1After starting, the motor does not rotate, and heavy objects cannot be lifted.

11) Excessive overload

Do not allow overload use

2) Voltage lower than rated voltage10More than%

Equal voltage returned to normal

3) The electrical appliance is faulty, resulting in disconnection or poor contact

Overhaul electrical appliances and lines

4) The brake wheel and the rear end cover are corroded and seized, and the brake wheel cannot be separated.

Remove the brake wheel and clean the rusted surface

52) Motor bore sweep

When the support ring is replaced, there is a symmetrical gap between the cone surfaces of the stator and rotor, and there is a symmetrical gap between each side. Each side is0.35-0.55mm (small motor gap is small) or send it back to the manufacturer for repair

22. The braking is unreliable, and the sliding distance exceeds the specified requirements

1) Poor contact between the brake ring and the conical surface of the rear end cover

Remove the grinding

2) The braking surface is oily

Remove cleaning

3) Loose brake ring

Replace brake ring

42) Pressure spring fatigue

Replace spring

52) The coupling is not working or stuck.

Check its connection part

 

3High temperature rise of motor

12) Overloading

Not allowed

2) Too frequent operation

PressFC30% work system

3) The brake clearance is too small, and the brake ring is not completely disengaged during operation, which is equivalent to additional load

Readjust the gap

42. Excessive noise of the reducer

14) Poor lubrication

Dismantling and maintenance

2) Excessive gear wear, excessive gap between teeth

3) Damaged gear

42) Bearing damage

5The motor makes a buzzing sound when starting.

12) Less phase of power supply and motor

Repair or replace the contactor

23) Poor contact of AC contactor