Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
50
Problem
Possible Cause
Solution
Weld appears
COLD
Not enough gun lift.
Perform a Lift Check, as specified in
Basic Procedure
,
several times. Consult
Lift Distance and Plunge Distance
Parameters
to ensure proper lift settings are being used. If lift
results are inconsistent, disassemble and clean the gun.
Too much plunge.
Plunge is measured by the amount of stud protruding beyond
the bottom edge of the ferrule. Too much plunge will keep
the gun from lifting. Consult
Lift Distance and Plunge
Distance Parameters
to ensure proper settings are being
used. Correct the plunge to the proper setting if the plunge is
improperly set.
Stud HANGS-UP
during the weld
Plunge is too short.
Plunge is measured by the amount of stud protruding beyond
the bottom edge of the ferrule. Consult
Lift Distance and
Plunge Distance Parameters
to ensure proper lift settings are
being used. Correct the lift to the proper setting if the lift is
improperly set.
Mechanical bind in
accessories or ferrule.
Position the foot or ferrule grip of the gun so that the stud is
centered in the ferrule opening. If the stud is off-center, it can
restrict the plunging motion of the stud during welding.
Time setting or current setting
is too high.
Check the stud burn-off. If the burn-off is much greater than
what is typical for that diameter stud, the time and current
settings may not be correct. Consult
Setting Current and
Reading the Current Display
to ensure proper current and
time settings are being used. Correct the settings and
perform weld inspections as described in
Inspection and
Testing of the Weld
.
Summary of Contents for ArcCharger N550C DOMESTIC
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