Typical Mig Welding Connections And Settings - Miller Bobcat 250 Owner's Manual

14-18.
6-5.

Typical MIG Welding Connections and Settings

A. Solid Wire Applications
A. Solid Wire Applications
6
7
3/4 in.
wrench
crescent wrench
OM-249336 Page 32
nutdriver
chippinghammer
Complete Parts List available at www.MillerWelds.com
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Complete Parts List is available at www.MillerWelds.com
Typical MIG Welding Connections And Settings
2
5
1
8
3
4
9
Stop engine.
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This section provides general guide-
lines and may not suit all applications.
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The control panel shows the typical set-
tings for welding with 0.035 (ER70S-3)
solid wire, short circuit transfer. Use Ar-
gon-based shielding gas. Note Coarse
Range, Fine Control, and Weld Proc-
ess switch settings.
1 Work Clamp
2 Wire Feeder
3 MIG Gun
4 Gun Trigger Plug
5 Voltage Sensing Clamp
6 Gas Cylinder:
75/25 Argon-Based Gas for Short Circuit
Transfer; 80% Argon (Or Higher) for
Spray Transfer
7 Gas Hose
8 Quick Connector
9 Workpiece
Connect work cable to welding generator
Work terminal. Connect cable from wire
feeder to cable from welding generator Elec-
trode terminal.
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Be sure to use the correct size weld ca-
bles (see Section 5-9).
Loosen MIG gun securing knob. Insert gun
end through opening in feeder and position
as close as possible to drive rolls without
touching. Tighten knob.
See wire feeder manual for wire threading
procedure.
Insert gun trigger plug (item 4) into matching
receptacle and tighten threaded collar.
Connect gas hose from feeder to regulator
on cylinder.
Typical Control Settings For Short Circuit
Transfer Using .035 (ER70S-3) Solid Wire
And 75/25 Argon-Based Gas:
� Set Weld Process Selector switch to
Wire + (DCEP) position.
� Set Coarse Range switch to Wire (17-22
volts) Range position.
� Set Fine Control to obtain minimum
spatter.
� Set wire feed speed between 150-300
IPM.
Typical Control Settings For Spray Trans-
fer Using .035 (ER70S-3) Solid Wire And
80% Or Higher Argon-Based Gas:
� Set Weld Process Selector switch to
Wire + position.
OM-249336 Page 15
� Set Coarse Range switch to Wire (20-28
volts) Range position.
� Set wire feed speed between 320-500
IPM.
� Set Fine control to 3 and increase for
longer arc length.