9
TIGHTENING AND LOOSENING OF BOLTS OR NUTS
TIGHTENING AND LOOSENING OF BOLTS OR NUTS
• Beware of non-xed, freely rotating reaction arms or of rotating impact sockets.
• Loose clothes, long hair, cables, etc. are always to be kept away from the danger/rotation
area. When the machine is put into operation, it is mandatory to wear ear protection, safety
shoes and safety goggles.
• Never leave a running RAPTOR Series Torque Wrench unattended and always be ready to
switch off the machine if necessary. Maintain a safety distance of arm length.
• Always place the impact socket or hex driver snugly onto the screw or nut/bolt. Faulty screw
or nut/bolt connections may result in exceeding the mechanical stress limit of the material,
causing it to break. Parts that splinter off may cause bruises or even life-threatening injuries.
• Due to emission of an air-oil mixture, a breathing mask must be worn, especially when
working over the head and in tight, secluded spaces.
When torquing and untorquing fasteners, always hold/position the RAPTOR Series Torque Wrench in
line with the fastener axis to avoid damage to the application. See Figure 1 on the following page.
The indicated calibrated torque settings have to be considered only as a guideline. Because of
variations in pressure and/or air ow, as well as other application issues, deviations from the
calibration certicate may be necessary. Due to the CFM required, when the tool is running at free
speed, it may not be possible to set the regulator to the desired pressure due to air pressure drop off.
The CFM requirement is lower once the tool is under load, so if this happens, set the regulator to the
desired PSI without the tool running. Try tightening down the fastener and check the PSI when the
tool stalls. If the tool stalls at the PSI setting, the desired torque has been reached. If it has stalled
before, try adjusting regulator higher until the correct stall PSI is reached.
WARNING
NOTICE
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