Situations in which it is necessary to turn off power supply
1, In the case of an abnormality or an accident, or in the event of power failure, immediately turn off power supply.
2, In order to prevent accidents due to unintended start-up of the machine, carry out inspection, repair, or cleaning of the machine only after turning off power supply.
3, When drawing out the power supply plug, do it by holding the plug itself, not the cord.

Caution:
To turn off power supply means to turn off a power supply switch and then to draw out a power plug from a receptacle or to separate the power cable from the supply side. hereinafter the same.