1. Determine the wiring method: explosion-proof floor drain wiring should follow the "line to line, line to the ground, ground to ground" principle, that is, the explosion-proof floor drain on the terminal were connected to the yellow and green ground, zero line and fire wire in the power distribution box.
2. Pre-operation check: before connecting, should first check the floor drain itself whether there is damage, deformation and other conditions to ensure that its appearance is intact; at the same time, should also check the explosion-proof floor drain model and rated operating voltage and other parameters of the external power supply is consistent.
3. Connection of equipment: first connect the yellow and green ground wire to the explosion-proof floor drain grounding column, and fixed with screws; and then connect the zero line and the fire line to the other two terminals in turn, and fixed with screws.
4. Confirmation of the connection: after the completion of the connection, should be reconfirmed that the screws on the terminal has been tightened to prevent short circuit or loose lines; at the same time, should also check the shell of the ground leakage leakage phenomenon.
5. Test equipment: after the connection is completed, should also use a voltmeter and other related equipment for testing to ensure that it is connected correctly and can work properly. Before testing, all items and other debris should be removed from the floor drain, so as not to affect the test results.
The above are the specific steps and precautions for the correct connection method of the explosion-proof floor drain, if you do not know the relevant knowledge and skills in the operation process, you should ask the professionals to operate and operate in strict accordance with the relevant regulations and standards to ensure safety and reliability.