Newly installed, overhauled, and retrofitted electric hoist should perform this test.
Lifting the loading of 1.1 times rated load, and the separate and linkage tests of lifting, braking, and large and small vehicles are carried out according to the working cycle and the allowable power-on duration of the motor, and the continuation is not less than 1h. The structure and mechanism of the electric hoist should not be damaged and the joints are not loose.
Lift the 1.1 times rated load and check the flexibility of the electric hoist mechanism and the reliability of the brakes. The test of each working condition shall not be less than 3 times, and each time the operation is stopped, the next start shall be carried out, and should pay attention to limit the acceleration, deceleration and limit the speed within the normal working range of the electric hoist. After unloading, check the mechanism and structural components for any abnormalities such as looseness and damage. The weight limiter connection or its action value must be restored after the test.
