Hilti SI­-AT-­A22 Mode D'emploi Original page 16

Parameters in adaptive operating mode
Type of threaded fastener (short
@
name for fastener)
Material grade / quality
;
Diameter (optional)
=
The illustration shows the layout of the operating parameters on the display.
Type of threaded fastener
Parameters for various types of threaded fastener are saved ex-works in the
torque module.
The fastener shown must correspond to the fastener used.
Further information can be found in the quick-start guide of the SI-AT-A22
and in the operating instructions of the fastener you use.
5.6.2 "Tightening" operating mode
In this operating mode a total of 30 torque settings are available. The setting
to be selected for a particular type of fastener depends on the diameter of
the fastener and the specified torque. The setting has to be determined step
by step on the basis of these data.
For the "Tightening" operating mode, the display shows the following:
The number to the right of the threaded-fastener symbol shows the selected
setting.
5.6.2.1 Determining the required setting for the "Tightening" operating
mode
1.
ATTENTION: Before starting to tighten a threaded fastener, always
check that the mating faces of the components to be joined are seated
flat against each other and that the nut has been screwed down until it
is seated against the component.
2. Use a low setting for initial tightening of the fastener.
▶ Start the step-by-step process with as low a setting as possible, to
avoid the possibility of overtightening and damaging the fastener.
3. Use a calibrated torque wrench to check the torque applied to the
fastener.
For repeatable torquing of two or more identical fasteners, make
sure that all torquing conditions remain unchanged. A change in
torquing conditions can necessitate a change to a different stage.
Result 1 / 3
The specified tightening torque of the fastener to be tightened was not
achieved.
▶ Back off the fastener and set the torque module to a higher stage.
10 English 2124681
*2124681*