Lincoln Electric LN-9F GMA Welder User Manual


 
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Poor arc striking with sticking or
"blast-offs", weld porosity, narrow
and ropy-looking bead, or electrode
stubbing into plate while welding.
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1. Verify that the welding techniques
or procedures being used are
proper. See "Gas Metal Arc
Welding Guide" (GS-100),
"lnnershield Production Welding
Guide" (N675), “Outershield
Procedure Guidelines” (GSP-70,
GSP-71), “Procedure Guidelines
for Pulsed Spray Welding” (GSP-
PULSE) or "How To Make
Submerged Arc Welders" (S604).
2. Check that the wire feed
acceleration setting is proper for
the process. See the topic
“Starting Characteristics" in the
Operation section for proper
acceleration setting.
3. Check that the Voltage Control
Response is properly set for the
power source and process. See
the topic "Voltage Control
Response" in the Operation
section and the appropriate
power source connection
diagram.
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If all recommended possible
areas of misadjustment have
been checked and the problem
persists, contact your local
Lincoln Authorized Field Service
Facility.
If for any reason you do not understand the test procedures or are unable to perform the necessary tests/repairs
safely, contact your ;>31;1DC8>A9I54695;4B5AE9356139;9CH before you proceed.
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Observe Safety Guidelines
detailed in the beginning of this manual.
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