Hilti FX 3-A Operating Instructions Manual page 41

4. Screw the stud holder you need into the hand tool, tightening the stud holder clockwise to the specified
tightening torque. When the required tightening torque is reached the torque screwdriver disengages
with haptic and acoustic feedback.
Technical data
Tightening torque for stud holder
Materials
S­BT 1⁄4" torque screwdriver - 5 Nm
For more information on the stud holders, consult the operating instructions that accompany the
studs.
5. Set the shielding ring on the bayonet connector on the hand tool and twist it clockwise until it engages.
5.5 Connecting hand tool and ground lead
CAUTION
Risk of damage due to incorrect connecting sequence.
▶ To prevent damage, make the connections in the correct sequence.
1. Make sure that the welding machine is switched off.
2. Connect the current connector of the hand tool to the minus current socket and latch it in position by
turning it clockwise.
3. Connect the control connector of the hand tool to the welding machine and latch it in position by turning
it clockwise.
4. Connect the connector of the ground cable to the plus current socket and latch it in position by turning it
clockwise.
5. Check that all connections are fully latched.
The hose of the hand tool must be filled with inert gas before work starts.
When you disconnect the hose package after use, fit the protective caps on to the connections
after disconnecting.
5.6 Preparing workpiece and connecting ground clamp 7,
WARNING
Risk of injury by dusts that are hazardous to health! Dust from surface coating and metal can be
hazardous to health.
▶ Depending on the type of coating to be removed, wear a dust mask or respiratory protection, as
necessary.
▶ Comply with the locally applicable regulations for occupational health and safety.
CAUTION
Risk of corrosion due to inadequate corrosion protection! Surfacing can expose the workpiece to
corrosion.
▶ Establish corrosion protection in accordance with your national and local requirements and in accordance
with jobsite specifications.
▶ Hilti offers a sealing washer in combination with the F­BT­MR SN stud. The prepared surface and the
stud are protected against corrosion by the sealing washer. Check usability in accordance with your
national and local requirements and in accordance with jobsite specifications. For more information
contact Hilti Service.
1. Use a center punch to mark the position where the stud is to be welded on.
▶ Comply with the minimum distances between studs and from edges.
*2302408*
6
2302408
5 Nm
8
English 31