In order to make sure the single girder overhead crane can be operated safely and prolong its life, ZZHZ(zzhz.com) has very rich experience of producing overhead crane ; therefore, it can give some advice to us:
a. Pay attention to working condition and lubricating situation, if there are abnormal things or noises, we should stop and check. 
b. We should obey the nine principles strictly.
c. Two mechanisms can run at the same time in order to improve the working efficiency, but they don't start together. 
d. The goods shouldn't be lifted suddenly, the goods should be lifted 100-150mm when lifting until the lifting mechanism runs normally. 
e. It is prohibited to cut power by limit switch when running normally.
f. The reverse connection braking is prohibited strictly. 
g. When power stop suddenly or the voltage drop sharply, we should turn the controller to zero ,and cut off the power rapidly 
h. Don't check or adjust the parts when running normally 
i. It shouldn't be directed by many persons when running normally, but the driver should stop the crane when someone send the emergency stop signal.
j. The goods shouldn't be lifted in the air when having a rest. k. When two cranes lift one goods, we should distribute reasonably according to the rated lifting capacity.