Electric wrench is in the power supply or battery powered wrench, is a tool which is used to tighten the bolt. When using electric wrench absolutely don't want to pull (with short, impulse force, because yank will produce an impulse, at the moment stop hard, screw or bolt may have turned her head. Pollutants can interfere with precise torque value. If there are pollutants parts and screw hole, will not be able to have the correct torque value. To introduce the use electric wrench the note below)The tool before turning on the power supply, need to check the switch in the off state can be inserted. )Confirm the site to connect power and voltage electric wrench are needed whether conform to, whether there is leakage protector to pick up. )According to the size of nut choose match sleeve, and properly installed. )High voltage is too low are unfavorable use. )Should not be simplified as a hammering tool use. )Don't increase in hand rocker cover strength after rod or lever. )Electric wrench metal case need reliable grounding. )Check up electric wrench mounting screw fastening, if found that the screw is loose, needs to be tightened again immediately. )Check whether the hand-held electric wrench on both sides of the handle is in good condition, installation is firm. )Standing on a ladder work or high homework should take measures to prevent a fall. )If workplaces in far away from the location of the power supply, extension cable, you need to use, installation capacity enough qualified extension cable.
