CHIEF MULTISPOT M25AL Manuel D'instructions page 6

• "Stud Material" parameter.
• "Base Material" parameter.
• "Spring Force" parameter.
newly changed value will appear on the display and next to
it an arrow pointing downward if the value was decreased
or upward the value was increased.
Based on the choices made, the force and voltage to be
used will be indicated on the display.
6
The value can be changed by
means of the knob Q.
Note: if the force on the gun
is changed from the pro-
posed value, we recommend
adjusting this value. The
It is possible to change the voltage by means of the knob
G, whereas the force displayed on the scale P can be
changed by means of the knob Q.
• "Language" parameter.
• "Measure system" parameter.
• "LCD contrast" parameter.
• "Factory setup" parameter.
4 OPERATING PRINCIPLE OF WELDING THREADED
STUD BOLTS WITH CONTACT POINT START-UP
(Fig. 3)
The stud bolt is inserted in the clamp X (phase 1), then
positioned and pressed with its start-up contact directly
against the surface of the sheet metal to be welded (phase
2). The spring of the gun presses the stud bolt against
the metal, the start command begins sending current
which melts the start-up contact, and the electrical arc
is propagated along the entire surface of the stud bolt
(phase 4) pushed against the metal surface. The molten
metal solidifi es, thereby welding the stud bolt (phase 5).
The gun must be extracted in perfect alignment with the
bolt to avoid deforming the clamp, and thus ensuring its
long life-span (phase 6).
The value can be changed
from 0 to 100% by means of
the knob G.
This function enables you
to increase or reduce the
brightness of the display A.
"ON" can be selected by
turning the knob G and
pressing it briefl y;
message "Factory Done"
will appear to confi rm that
the reset was successful.
the