Total TIRLI2002, Руководство пользователя

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14
Proper tightening torque for high tensile bolt
1. Tightening time (second) 2. Tightening torque
Work indications
Keep the tool pointed directly at the bolt or nut.
Use the appropriate drill bit for the screw/bolt head you wish to use.
When tightening an M8 or smaller screw, choose a suitable impact force and carefully
adjust the pressure on the switch trigger so that the screw is not damaged.
If the impact force is too strong or if you over-tighten the screw or the tip of the
screwdriver bit, it may cause chain damage, overload or the like. Before starting your
job, always do a trial run to determine the proper tightening time for your screw.
If the tool is used continuously until the battery cartridge is discharged, let the tool rest
for 15 minutes before proceeding with a new battery cartridge.
After fixing, always check the tightening torque with a torque wrench.
Tightening torque is affected by a wide variety of factors, including the following:
• When the battery cartridge is almost fully discharged, the voltage will drop and
the tightening torque will decrease.
• Screwdriver bit or socket bit
o
If the correct size of bit is not used, the tightening torque will be reduced.
• Screw
o
Although the tightening torque coefficient and the kind of screw are the
same, the proper tightening torque will be different depending on the
diameter of the screw.
o Although the diameters of the screws are the same, the proper tightening
torque will vary depending on the screw and its length.
• The way the tool is clamped or the driving position material to be clamped will
affect the tightening torque.
• Running the tool at low speed will cause a reduction in tightening torque.