Low clearance electric hoists, like other lifting equipment, may encounter various faults during operation. Here is a summary of common faults and their solutions:

Electric hoist does not work after startup:

Causes: The electric hoist may not be connected to the rated working voltage, which can be due to power failure, phase loss, or low voltage.

Solutions: Check if the power supply is on, inspect and repair the main and control circuits for damage, disconnection, or poor contact, and measure the motor input voltage with a multimeter or voltmeter to ensure it meets the rated voltage.

Abnormal noise during operation:

Causes: Abnormal noise may originate from the control circuit, motor, or reducer, and can be caused by faults such as poor contact of contactors, damaged bearings, or worn gears.

Solutions: Inspect and repair or replace faulty contactors in the control circuit, check and replace damaged bearings or gears in the motor, and ensure proper lubrication of the reducer.

Excessive slippage distance during braking:

Causes: This may be due to excessive wear of the brake ring, reduced pressure of the brake spring, oil contamination on the braking surface, or poor contact between the brake ring and the rear end cover cone.

Solutions: Adjust the brake bolt or replace the brake ring according to the hoist's instructions. Clean the braking surface with light gasoline if it is contaminated with oil. If the brake ring is loose or damaged, replace it. If the contact between the brake ring and the rear end cover cone is poor, repair or replace the relevant parts.

High motor temperature:

Causes: Overloading, damaged motor bearings, or non-compliance with the motor's rated duty cycle can all lead to high motor temperatures.

Solutions: Check if the hoist is overloaded and reduce the load if necessary. Inspect and replace damaged motor bearings. Ensure the motor operates in accordance with its rated duty cycle.

Inability to restart after stopping with a load suspended mid-air:

Causes: This may be due to low or fluctuating system voltage, or phase loss in the three-phase motor during operation.

Solutions: Wait for the voltage to return to normal before restarting. Check the power phase number if phase loss is suspected.

Failure to stop or continue running after reaching the limit position:

Causes: This may be due to welded contacts of the contactor, a malfunctioning limit switch, or incorrect installation or adjustment of the limit switch.

Solutions: Immediately cut off the power supply to force the hoist to stop. Inspect and repair or replace the contactor or limit switch after stopping.

Oil leakage from the reducer:

Causes: Oil leakage from the reducer may be due to poor assembly or failure of the sealing ring between the reducer body and cover, or loose connecting screws of the reducer.

Solutions: Disassemble, inspect, or replace the sealing ring. Tighten the connecting screws of the reducer after stopping.

Motor扫膛 (Motor stator and rotor contact):

Causes: This may be due to severe wear of the support ring on the motor shaft, displacement of the rotor core, or other reasons causing the conical rotor and stator gap to be too small.

Solutions: Replace the support ring, adjust the gap between the stator and rotor cones evenly, or send the motor for repair.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment