Yueming CMA1325C-B-A - Installing External Power; Equipment Grounding

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3.1.9 Installing external power
 Connect the outgoing wire to the chiller power;
 Connect the power cord of the air pump to the power supply;
 Connect the outgoing wire of exhaust fan 1 and exhaust fan 2 to the power of the two exhaust fans,
without distinguishing exhaust fans;
 Connect the main power line to 220V power of the factory; the connected voltage should be 220V,
otherwise the electronic components may be damaged;
 The main power switch controls the main power of the equipment. When the switch is pulled up, the
machine and the socket in the electrical box will be connected.
3.1.10 Equipment grounding
This equipment has proposed stringent requirements on the safe grounding of user power supply system,
which must comply with local safety standards:
 L: phase wire of 220V mains system; this wire must be provided with safe electrical switch (must be
installed in the phase wire).
 N: commonly known as the neutral line, supply power to electrical equipment with phase wire.
 E: safe ground wire, shells of all electrical equipment (grounding terminal) are connected to this wire to
ensure safety. Ground resistance should be less than 5Ω.
The user must consult the professional electrical installer (electrician), and the professional electrical installer
should check and confirm if the grounding wire is connected safely!
Attention
Poor grounding will lead to high equipment failure rate, and may lead to other accidents! Han's Yueming Laser does
not assume any responsibility and obligation for any resulting faults and accidents.
If there is no safe grounding wire in the power supply systems, be sure to follow the method below to install
safe grounding grid by professional electrical installer:
 The grounding device must be rooted into a humid place around the house with 2-4 pieces of
4*35*1500mm angle steel, every piece is 1m from others, and then unearth each of angle steel with
3*30mm flat iron and create a good grounding grid.
 Lay the ground grid and then measure its resistance to ground, which is 3-5 ohms typically.
 After measuring the resistance, connect to the outgoing terminal of the grounding grid with a piece of
RVV2.5mm2 copper wire, and the other end to the safe grounding wire of the cutting machine and the
grounding hole of the outlet, as shown below: