Electric wrench operating rules and operating precautions
? Inspection test and maintenance 1. The metal shell of the electric wrench should be reliably grounded, and the shell should have a regular inspection and test certificate, and within the validity period. 2. Check the tightening of the mounting screws on the body of the electric wrench. If the screws are loose, they should be retightened immediately, otherwise the electric wrench will malfunction. 3. Check that the handles on both sides of the hand-held electric wrench are intact, can be damaged without cracking, and the installation is firm. Precautions for operation of electric wrench 1. Confirm whether the power supply connected to the site matches the nameplate of the electric wrench. Whether there is a leakage protector. 2. Select the matching sleeve according to the size of the nut and install it properly. 3. Make sure that the switch on the electric wrench is turned off before powering on. Otherwise, the electric wrench will turn unexpectedly when the plug is inserted into the power outlet, which may cause personal injury. 4. If the working place is far away from the power source, when the extension cable is required, the extension cable with sufficient capacity should be installed and qualified. The extension cable should be elevated or pass through measures to prevent the cable from being damaged by rolling. 5. Try to find the supporting point of reverse force distance when using it to prevent the reaction force from hurting people. 6. When the carbon spark of the motor is found to be abnormal during use, the work should be stopped immediately, and the inspection and treatment should be performed to eliminate the fault. In addition, the carbon brush must be kept clean. 7. Standing on a ladder or working at a height should take measures for falling from a height, and the ladder should be supported by ground personnel.