Personal protection when using electric drill
1. Wear a protective mask when working face up. Wear protective glasses when drilling pig iron castings to protect your eyes.
2. Drill holder should be properly installed.
3. When working, the drill is in a hot state, so it should be careful to burn the skin.
4. When drilling a hand-held electric drill with a diameter of more than 12mm, use a handgun drill with a side handle.
5. Fall measures should be taken when working on a ladder or at a high place. The ladder should be supported by ground personnel.
Precautions should be paid before operation
1. Check whether the power supply connected onsite matches the nameplate of the electric drill. Whether there is leakage protection device.
Drill bit and gripper should be fit and properly installed
3. Make sure that the switch on the electric drill is switched on. Otherwise, the electric drill will turn unexpectedly immediately when the plug is inserted into the power socket, which may cause personal injury.
4. If you need to extend cables in a place far from the power supply, install qualified extension cables with sufficient capacity. If the cable extends through the pedestrian corridor, it should be elevated or take measures to prevent the cable from being crushed and damaged.
Correct operation of electric drill
1. Drilling holes on metal materials should be first used in the position of being drilled to hit the ocean.
2. When drilling larger holes, drill with a small drill bit in advance, and then drill with a large drill bit.
3. If it is necessary to drill on metal for a long time, cooling measures can be taken to keep the drill sharp.
4. Drill cuttings produced during drilling are strictly prohibited to be cleaned directly by hand, and special tools should be used to clean the cuttings.
Maintenance and inspection
1. Check the drill bit: the use of dull or bent drill bit will make the overload surface of the motor abnormal and reduce the working efficiency. Therefore, if such situation is found, it should be replaced immediately.
2. Check the fastening screws of the electric drill body: check the fastening condition of the mounting screws of the electric drill body before use. If the screws are loose, tighten them immediately, otherwise it will lead to the failure of the electric drill.
3. Check the carbon brush: the carbon brush on the motor is a consumable. Once the wear exceeds the limit, the motor will fail.
4. Check the protection grounding cable: The protection grounding cable is an important measure to protect personal safety, so class ⅰ appliance (metal shell) should be regularly checked that the shell should have good grounding