Hilti FX 3-A Operating Instructions Manual page 26

Trouble or fault
Vapors are produced during
welding, residues are left or
the coating around the stud is
burnt.
High wear of the surfacing
tool.
Severe vibration of the sur-
facing tool.
Positioning of the surfacing
tool difficult.
The display shows 'F.04' and
the service indicator flashes.
The display shows 'F.03'.
The temperature indicator
flashes. The fault indicator on
the hand tool flashes.
16 English
Possible cause
Wrong H code selected on the
welding machine
Surface incorrectly prepared or
not free of contamination (residues
of the coating, of the surfacing
operation, oil film, etc.)
Hand tool not held perpendicular
to surface.
Incorrect settings on the drill /
driver used.
Weld position not marked with
center punch.
Surfacing at an angle or too deep
Weld position not marked with
center punch.
Hand tool not connected or is not
detected.
Tool temperature too high
Tool temperature too low
Action to be taken
▶ Select the H code that matches
the stud. → page 13
▶ Hold the hand tool vertical
and steady and maintain your
position throughout the welding
operation.
▶ Adhere to the necessary dis-
tances from edges. Adhere
to the specifications for posi-
tioning the ground clamp and
the hand tool (distance and
orientation).
▶ Prepare the surface correctly.
→ page 11
▶ Thoroughly clean an extensive
area of the surface after surface
preparation.
▶ Hold the hand tool exactly
perpendicular to the surface.
▶ Use only the recommended drill
/ driver with the recommended
settings. → page 11
▶ Mark the position with a center
punch before preparing the
surface. → page 11
▶ Keep the drill / driver perpendic-
ular to the surface throughout
the operation and stop the
surfacing operation as soon as
the required surface condition
is achieved. → page 11
▶ Mark the position with a center
punch before preparing the
surface. → page 11
▶ Connect the hand tool.
→ page 10
▶ If the hand tool is already
connected, disconnect the
connections to the welding
machine and reconnect the
hand tool. → page 10
▶ Check the ambient temperature
and lower it if possible.
▶ Allow the product to cool down.
Do not attempt active cooling of
the product!
▶ Check the ambient temperature
and raise it if possible.
▶ Operate the product in a warmer
ambient temperature.
2302420
*2302420*