What are the maintenance items of electric wrenches?
Collective：1., pay attention to check the access voltage, if the voltage is unstable, you need to add voltage regulator.2., pay attention to check the wrench power cord, can not be damaged.3., pay attention to the appearance of fastening screws are loose.4. double insulated tools do not need earthing, and non double insulation tools are connected with earth leakage protector.5. single-phase series motor, pay attention to carbon brush wear, change in time.
At present, there are many types of electric wrenches on sale in the market, and the maintenance items are really different.
Check hand-held electric wrench, both sides of the handle are intact, not cracked, damaged, firmly installed
