Nelweld Operations and Service Manual
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3.9.2 Stud and Work Leads – Stud Negative
Applications (straight polarity)
Most welding applications run with the stud
being negative (-). For these applications,
connect the stud gun weld cable to the gun
connector on the power source output panel
marked with a gun symbol. A grounding cable
must be run from the positive (+) power source
output panel connector to the work piece. The
work piece connection must be firm and secure.
Excessive voltage drops at the work piece
connection may result in unsatisfactory welding
performance.
3.9.3 Stud and Work Leads – Stud Positive
Applications (reverse polarity)
When positive stud polarity is required,
such as in some galvanized applications,
install as above, except reverse the
output connections at the power source, namely,
with the stud gun weld cable to the positive (+)
connector and grounding cable to the negative
(-) connector marked with a gun symbol.
“Stud positive” applications should only be
attempted with single gun machines. The
power source is not designed to operate two
outputs with one or both guns operating in
the “stud positive” mode.
Failure to observe this precaution may
result in a dangerous welding situation.
CAUTION
Summary of Contents for Nelweld 4000
Page 58: ...Nelweld Operations and Service Manual 58 7 5 Declaration of Conformity...
Page 61: ...Nelweld Operations and Service Manual 61 8 2 Base and Side Cabinet Section...
Page 65: ...Nelweld Operations and Service Manual 65 8 4 Rear Cabinet Section...
Page 67: ...Nelweld Operations and Service Manual 67 8 5 Wiring Diagram...