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Gun trigger works and arc can be
struck. Unit then shuts down while
welding, or voltage output too low to
establish arc (LN-9 ACTUAL VOLTS
meter reading is low, zero or
negative when trigger is closed).
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1. Check to see if the wire feeder or
power source "Electrode Polarity"
switches are set properly. Set
Polarity Switches in proper
position. See the topic
"Electrode Polarity Switch" in
the Operation section.
2. Check to make sure lead #21 has
continuity (zero ohms) to the work
piece.
3. Check that the power source
voltage control is set for
REMOTE. R3S or DC-power
source voltage control switch
must be set to REMOTE.
4. Check that the LN-9 GMA control
cable leads or weld cables are
properly connected to the power
source. Refer to the connection
diagram for the LincoIn power
source being used.
5. Check to see if the 1/8 A fuse on
Voltage P.C. board is blown. If it
is, determine cause of fuse
blowing.
6. Determine whether the welding
power source is able to supply
SET voltage. If not, reset the
output range controls of the
power source so it can supply
SET voltage.
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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>A9I54695;4B5AE9356139;9CH before you proceed.
-($&(%"#)
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Observe Safety Guidelines
detailed in the beginning of this manual.
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