Lincoln Electric WIRE FEED MODULE IM 513-B - Manual (Page 20)

– 20 –
OPERATING INSTRUCTIONS
Additional Safety Precautions
The output terminals are energized when the
engine is running. The CV output will be de-ener-
gized only if WFM mode switch is in remote posi-
tion.
WIRE FEED MODULE OPERATION
Output
For constant voltage welding, place the CC/CV mode
switch in the CV position. Connect the wire feeder to
the CV negative output terminal and connect the work
to the positive standard output terminal. For electrode
positive, reverse the output leads. The negative stan-
dard output terminal is not used for CV welding of
either polarity. Refer to diagrams section to determine
the correct connection to the remote control recepta-
cle.
When the WFM is in the “CV” mode, the maximum
auxiliary power will be reduced by 25%. To obtain
maximum auxiliary output, place the CC/CV switch in
the CC position.
If the current rating of the welder is exceeded, a ther-
mostat will reduce the output voltage to approximately
5 volts. The thermostat will reset automatically as the
machine cools. If the thermostat trips, lower the wire
feed speed and output voltage or reduce Duty Cycle.
Controls
The output voltage is set with the voltage control dial
mounted on the control panel. Set the “Current
Range Selector" to the “190-120” position for optimum
welding characteristics. Changing the "Current Range
Selector” affects arc characteristics. Setting the
“Current Range Selector” one position to the right of
the "190-120” position will give a softer arc. If this
switch is placed one position to the left from the "190-
120” set point, the machine will produce a crisp arc
characteristic. The setting of the “Fine Current
Adjustment" has no effect on the operation in “CV”
mode.
For Coarse Current Control on the SAE-300 see oper-
ator manual.
Recommended Processes
Refer to latest Lincoln Bulletins on (Gas Metal Arc
Welding) and (Innershield Welding) with the fol-
lowing electrodes:
.030” Super Arc L-50, 56 with C-25 or CO
2
Gas
.035” Super Arc L-50, 56 with C-25 or CO
2
Gas
.045” Super Arc L-50, 56 with C-25 or CO
2
Gas
.068” NR-203MP
5/64” NR-203MP
5/64” NR-207
5/64” NR-203Nil%
MAINTENANCE
Engine Speed Adjustments
Any increase in the engine RPM by changing the
governor setting or overriding the throttle linkage
will cause an increase in the A.C. auxiliary volt-
age. If this voltage goes above 140 volts, the con-
trol circuits of the WFM and wire feeders will be
damaged. The engine governor setting is pre-set
at the factory -- do not adjust above RPM specifi-
cations listed in the engine welder operating man-
ual.
WARNING
CAUTION
TROUBLESHOOTING CHART
Have qualified personnel do the maintenance and
troubleshooting work. Turn the engine off before
beginning to troubleshoot.
WARNING