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
5The motor makes a buzzing sound when starting.	（23) Poor contact of AC contactor	Repair or replace the contactor