Nelweld Operations and Service Manual
- 50 -
Weld Quality Problems
Problem
Possible cause
Solution
Calibration value is incorrect
Adjust calibration value (F114) until correct current
is achieved.
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
Section 2.6
to ensure proper current and
time settings are being used. Reduce the current
setting and perform weld inspections as described in
Sections 2.7.4
, and
2.7.5
.
Plunge is too short.
Plunge is measured by the amount of stud
protruding beyond the bottom edge of the ferrule.
Consult
Section 2.6
to ensure proper plunge settings
are being used, and correct, if necessary.
Incorrect ferrule.
Ensure that the ferrule being used in the welding
process is the proper ferrule for the stud size and
application.
Weld appears “hot.”
Plunge dampening is too great.
If the gun is a Heavy Duty gun, it is equipped with
Tranquil Arc
®
. Back out the clear plastic plunge
dampener housing to decrease the free travel.
Time setting or current setting is
too low.
Check the stud burn-off. If the burn-off is much less
than what is typical for that diameter stud, the time
and current settings may not be correct. Consult
Section 2.6
to ensure proper current and time
settings are being used.
Correct the settings and perform weld inspections as
described in
Sections 2.7.4
and
2.7.5
.
Incorrect ferrule.
Ensure that the ferrule being used in the welding
process is the proper ferrule for the stud size and
application.
Insufficient gun lift.
Perform a Lift Check, as specified in
Section 4.5.14
.
Consult
Section 2.6
to ensure proper lift settings are
being used. Correct the lift to the proper setting if
the lift is improperly set.
Perform weld inspections as described in
Sections
2.7.4
and
2.7.5
.
Inconsistent gun lift.
Perform a Lift Check, as specified in
Section 4.5.14
,
several times. Consult
Section 2.6
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.
Consult
Section 2.6
to ensure proper plunge settings
are being used, and correct, if necessary.
Weld appears “cold.”
Plunge dampening is too little.
If the gun is a Heavy Duty gun, it is equipped with
Tranquil Arc
®
. Screw in the clear plastic plunge
dampener housing to decrease the free travel.
Содержание Nelweld 4000
Страница 58: ...Nelweld Operations and Service Manual 58 7 5 Declaration of Conformity...
Страница 59: ...Nelweld Operations and Service Manual 59 8 0 Diagrams and Parts Lists 8 1 Front Section Not shown...
Страница 61: ...Nelweld Operations and Service Manual 61 8 2 Base and Side Cabinet Section...
Страница 65: ...Nelweld Operations and Service Manual 65 8 4 Rear Cabinet Section...
Страница 67: ...Nelweld Operations and Service Manual 67 8 5 Wiring Diagram...
