Torque wrench considerations

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Speaking of torque wrenches, it is also a very popular installation tool. It belongs to the kind of mechanized construction tools. Maybe some of us are still unfamiliar with this tool, but for those who install it, Can be said to be easy to use, but after all, is a mechanical tool, when the torque wrench is used as long as it is inattentive, it is likely to hurt yourself, serious point of view, but also damage the tool is not necessarily, So when we use torque wrenches, we should pay more attention to avoid danger. The following is a summary of some considerations given by Chu Chengxiao. Please click on the download to view.
Torque wrench notes:
Before turning on the power, check whether the power supply voltage matches the nameplate of the product and if there is a grounding device. When the power supply voltage exceeds +10%, the voltage regulator should be used, otherwise it will affect the accuracy of the guarantee. Poor grounding can cause accidents.
The ambient temperature of the tool is -10°C to 40°C. If the temperature is too high or too low, the accuracy will be affected.
The initial torque of the screwed bolt must not be greater than 70% of the rated torque of the tool. Do not re-tighten bolts after reaching the rated torque.
When a tool is used to remove a bolt, its torque must not exceed the rated torque value. Under normal circumstances, this wrench is not a bolt that is tightened or has severe corrosion. Do not remove it with this wrench to avoid damage to the tool.
When changing the rotation direction, it must be done after the motor stops rotating. It is strictly prohibited to toggle the forward and reverse switches during operation. 6. When the wrench is automatically stopped, the switch can be released (If the switch is not turned off, the wrench will start automatically after 5 seconds) Wait 4-5 seconds before starting the wrench, or the wrench will not start.
Torque wrench operation precautions:
The size of the bolt diameter has a certain influence on the control accuracy. In the construction, the same type of bolt connection is used to pay the calibration torque value, and after a period of time, the inspection calibration should also be performed.
Turn idle for 3-5 minutes before starting work. If you find that the motor is sparking, the sound is abnormal, and the torque is unstable during the operation, check the machine immediately and do not take the sick job.
Regular cleaning and replacement of grease, generally after 5,000 times of operation, should be a cleaning and refueling, in order to extend the service life.
The power switches, carbon brushes, fuses on the controller, etc. on the main unit are all consumable parts and are prone to failure. They should be inspected and replaced in a timely manner.
If you find that the screws on the tool are loose during use, tighten them in time.
Do not lift the cable when carrying the tool, and take care to handle it gently to prevent shocks and bumps. When not in use should be placed in a ventilated and dry place. If moisture is found, it should be dried in time. Do not contact or store hazardous gases such as acids and alkalis

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