Note the operating conditions of 220V voltage and the order of switching power supply
Power failure - electricity - lock - seal ground - warning signs
Off the electricity ------- pull the security ground ------- Li Ming signs pull off the line ------ operation
Check the operation is correct to complete the task ------ demolition of insurance grounding ------- remove the warning card pull off the line ------ power
220v are low-voltage circuit, there is no provision, as long as the attention of several points:
1, do not touch the live part directly.
2, if you want to live work, you must ensure that the human body and the earth insulation (standing on the bench or insulation pad). Can not touch FireWire and Neutral Line at the same time.
3, the normal operation of the order: to use the switch off the circuit, first pull the sub-gate and then pull the total gate, the first joint gate and then sub-gate.
Line maintenance sequence:
Power off - pull the security ground - proof signs pull off the line - operation - review the operation is correct to complete the task - remove the insurance ground - remove the warning card pull off the line - power
