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Operation safety technology for hand held electric tools [2015-12-01]

 
1 the use of cutting machines, grinding should be kept sharp, intact, correct installation, firm and reliable.
2 the use of grinding wheel machine, its speed is generally 10000r/min above, therefore, the quality of the grinding wheel and the installation of strict requirements. Before use, should check the wheel and connected to the interrogation of the cushion and stable installation, the nut is not too tight, any wet, deformation, crack, breakage, knock the edge notch or contact of oil and alkali of the grinding wheel are not allowed to use, and shall not be affected with damp grinding wheel piece can automatically drying using.
3 hand-held electric tools, high speed, vibration, work with the human body direct contact, so in the humid area or in the metal frame, pressure vessel, pipe and other electrical conductivity good place, must use double insulation or reinforced insulation electric tools.
4 the use of engineering plastics for the housing of the non metallic shell of the motor, electrical appliances, in the storage and use should be kept under pressure, moisture, and may not contact gasoline and other solvents.
5 inspection before the operation should meet the following requirements:
In order to ensure the normal use of hand-held electric tools, in hand before hand electric tools must be in accordance with the requirements of the following requirements:
(1) the housing, the handle does not appear crack, damage;
(2) cable wire and plug switch intact, normal, protective zero connection correct reliable;
(3) the protective cover of each department is complete and reliable, and the electrical protection device is reliable.
6 after starting the machine, should no-load operation. Should check and confirm the linkage of the machine tool and flexible. During the operation, force should be smooth, not too hard.
7 strictly prohibited overloading. In order to prevent the use of machine failure to achieve the purpose of extending the service life, the operation should pay attention to the sound and temperature rise, found abnormal should immediately stop check. At the time when the operation is too long, the machine temperature rise above 60, should stop, natural cooling and then line operation.
8. Operations shall not touch the cutting tool, mould and grinding wheel used in military, is found to be blunt, damage, should immediately stop repair or replacement, and then continue operating.
. hand held motor operated electric tools rely on the operator's hand to control, if wash in running process, lost control of the equipment, damage to the workpiece, equipment damage, and even cause personal injury. So the machine rotates, not to go.
10 the use of impact drill or hammer, should meet the following requirements:
(1) the work should grasp the electric drill or electric hammer handle, drilling first arrived in the working surface of the drill bit, and then start, forced to moderate, to avoid shaking; speed if a sharp decline should be reduction of force, prevent motor overload, prohibited the use of bar pressure;
(2) when drilling, the reinforcement in the concrete should be avoided;
(3) 40% electric hammer drill and intermittent working system, shall be continuously used for a long time;
(4) working aperture in the 25mm above, there should be stable with the operating platform, should be located around the fence.

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