G-WEIKE LC Series, Руководство по эксплуатации, Страница: 57 / 75

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3.1.4.6 Equipment earthing
Safe earthing is strictly required for power supply system of CMA and PN serial laser
equipment. Power supply of users must satisfy safety regulations of the local government:
Fig3-20
·
L: Live line of 220V AC system. Safety electric switch is required for this line(The switch is
required to be mounted on the live line.)
·
N: it is popularly named as null line with the function of completing power supply
together with the live line.
·
E: Earthing line. All casings (earthing end) of electric parts are connected to this line to
ensure safety. Earthing resistance should be less than 5
Ω
.
Users are required to consult professional electric equipment installer (electrician), and have
the professional electric equipment installer check and determine if the earthing is reliable.
Attention: Poor earthing may cause high rate of failure to the equipment. in addition,
safety accident may also be caused. Our company shall not be liable for the
accidents and failure caused it.
if your power supply system is not with an earthing, it is a must for you to have professional
electric equipment installer mount a safety earthing net in the following method:
It is a must to use 2-4 pieces of 4x35x1500mm angle iron hammered into any wet place
surrounding the house as earthing. Distance between each two angle iron is 1m. And
then use a 3x30mm flat plate leads each angle iron out from earth surface to form a good
earthing net.
After completing the earthing net, measure earthing resistance with an apparatus, the
standard value is 3-5 0hm.
After measuring the resistance, connect one end of the RVV2.
5 ㎜ 2
copper core cable to
the eduction of the earthing net, one end is connected to the earthing of the carving
3.1.4.7
Removal of fixation block
At-ex-factory, to avoid unexpected impact during transportation, the equipment is
equipped
with fixation block on XY movement mechanism. During installation, they should be remowd.
Removal Of the fixation block is as shown in the figure below:
It is a must to remove the fixation block before inching of the machine.
Cutting head installation
At ex-factory, to ensure safety and prevent the laser head from being polluted during
Transportation, the cutting head [focus canister) of some types of machine are individually
packaged and kept. During installation of the equipment, they should be replaced back.