1. Check the components such as fishhook, chain and bolt to make sure they are in good condition before use.

2. Make sure the goods' weight not exceed the crane limit, do not use two machines to lift one good at the same line.

3. The lifter chain should be hanger vertically, the down steel beam is prohibited to turn between two chains according to two-lifter chain machine and the hoisting height of goods couldn't exceed the crane limit height

4. Strictly prohibit people to walk under it when it works

5. The supply voltage frequency must accord with the name plate limit, under the nominal frequency, the pressure couldn't under 90% of the limit.

6. The machine should avoid to be drenched, also it is unfit for lifting goods with poison、corrosion 、high temperature or voltage、flammability and explosibility,the working environment should accord:temperature -25 C~ +40 C, humiolity < 90%

7.When it is lifting, It should be arranged and operated by special person. after hoisting, try to empty running in order to check if the connection, hoisting chain or fishhook are in gear, then put in to use .the process should be observed by special person for every machine ,who should examine if the scaffold touched the wall, the hoist has exceptional noise or the chain has locked for every minute, it must be stopped as soon as you find such problems.

1. Every year, a person who is familiar with machine structure should clean and Keep the product cleaning, make it safekeeping and prevent to be affected with damp and cauterization.

2. Work with coal oil, add butter on the gear and axletree to make them lubricant and change 90# engine in the reducer.

3.When the two gears arc to be fixed write a "0" on them, and make them on the same beeline.

3. Don't change any part of the machine at will because they are arranged in reason.

4. After examining and repairing, you should have idling and load tries to make sure the machine is gear before reused it.

ON

Trouble circs

Trouble reason

Eliminate methods

First

Doesn't work when it is emoty rumlirtg

1.One way cut off on three way machine

2.Electrical source voltage is too low.

3.Chain locked.

4.There are sundries in machine.

1.Check the fuse and electrical source.

2.Check the pressure.

3.Check if the spring and axial pore be locked.

4.Make the chain in sequence.

5.Eliminate the sundries.

Second

Doesn't move when it is load

1.The stator around circle cut off.

2.Over loading.

1.Check the resistance and electrical source.

2.Check the weight of goods and electrical machine load current.

Third

Electric machine super heater

1.Electrical source voltage is too low or too high.

2.Electric machine is over loading.

3.Hydraulic buffer stop works too slowly.

1.Check the electrical source Voltage.

2.Check the load current of electric machine.

3.Check if spring and axial pore be flexible.

Fourth

Load with too much noise

1.The machine can't work well together with the reducer.

Retooling reducer and electrical machine.

Fifth

The chain can't lift goods

.idler pulley has been broken which caused by crumpled chain.

Change the idler pulley.

Sixth

Brake failure.

1.The brake ring has been fretted badly.

2.Spring can't work.

3.Friction surface is not neat.

1.Change the brake ring.

2.Adjust the spring.

3.Clear the friction surface..