FAQ-Henan Feima Lifting Machinery Co., Ltd.

In order to ensure the reliability and service life of the electric hoist, the hoist must be lubricated and maintained regularly: 1. For newly installed, overhauled and reused for more than one year, the electric hoist should be tested according to the relevant installation test run before use; 2, in the process of use to carry out daily inspection, monthly inspection, annual inspection; 3, should pay attention to the use of wire rope, maintenance, and scrap; 4, for each inspection to have a written detailed registration record and take measures. 5, during maintenance, replacement parts should be the same as the original material and performance; 6, structural parts in welding, operation and use of materials should meet the quality standards of the original structure; 7, electric hoist in the working state, is not allowed to carry out maintenance; 8, the above inspection items refer to the relevant provisions and requirements.

2021-11-09

The gap between the conical rotor and the stator of the motor is too small to collide (called "sweeping bore")

The main reason for the treatment method is that the factory products are not allowed to "sweep the bore". The main reason for the occurrence of "sweep the bore" is: the support ring on the motor shaft is seriously worn, the rotor core is axially displaced, or the stator core is displaced to replace the support ring, so that there is a uniform gap between the cone surfaces of the stator and rotor, with each side being 0.035~0.55mm (small gap for small motors) or sent back to the manufacturer for repair.

2021-11-09

Oil leakage of reducer

The main reason is to deal with (1) between the box body and the box cover, the sealing ring is poorly assembled or failed and damaged. Remove, repair or replace the sealing ring (2) The connecting screw is not tightened and the screw is tightened.

2021-11-09

After starting, it cannot be stopped, or when it reaches the limit position, it still does not stop.

The main reason treatment method (1) AC contactor contact welding (2) limiter failure quickly cut off the total power disassembly maintenance or replacement of AC contactor

2021-11-09

The heavy object is lifted in mid-air and cannot be started again after parking.

The main reason is that the voltage is too low or fluctuates greatly, and the voltage returns to normal before starting.

2021-11-09

Motor buzzing when starting

Treatment of main causes (1) few phases of power supply and motor (2) poor contact of AC contactor maintenance or replacement of contactor

2021-11-09

Reducer too loud

The main reason treatment method (1) poor lubrication (2) excessive gear wear, the gap between teeth is too large (3) gear damage (4) bearing damage disassembly and maintenance

2021-11-09

Temperature rise of motor is too high

The main reason treatment method (1) overload use is not allowed (2) operation is too frequent according to FC30% working system (3) brake clearance is too small, the brake ring is not completely disengaged during operation, which is equivalent to readjusting the clearance with additional load.

2021-11-09

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