Miller Electric Welder S 74 User Manual

S-74 MPa Single Feeder Features  
PosifeedWire Drive Assembly Features  
(Synergic Pulsed MIG when connected to the Invision 350 MPa)  
24 VDC high-torque, permanent-magnet motor.  
Quick-change drive rolls.  
Quick-release, calibrated drive-roll pressure adjustment arm allows drive roll change  
without losing spring preload setting.  
Four sealed ball bearing all-gear-driven drive-roll carriers for smooth, positive and  
accurate wire feed with long uninterrupted service life.  
Easy loading and threading of welding wire without having to release the drive-roll  
pressure arm.  
Solid-state speed control and brake circuit eliminates the need for electrical/  
mechanical relays and increases service life.  
Uses Miller standard 1-5/8 in (41 mm) diameter drive rolls.  
Quick-connect for all Miller guns.  
Covered drive rollseasy access, heavy-duty, molded composite cover over  
drive assembly.  
Floating positive drive systems provide trouble-free feeding on a variety of wires.  
Tool-less rotatable drive assembly  
allows operator to rotate the drive  
housing, eliminating severe bends in the  
wire feed path which reduce gun liner  
life. Also aids in feeding difficult wires.  
Dual tension control adds flexibility  
for the operator to fine-tune the  
pressure on the wire independently  
when feeding a variety of wires.  
(Use with CV  
Power Sources.)  
Specifications  
(Subject to change without notice.)  
Input Power  
Electrode Wire Diameter Capacity  
Wire Speed  
Dimensions  
Net Weight  
24 VAC, 10 A, 50/60 Hz  
.023–5/64 in (0.6–2 mm)  
50–780 IPM (1.3–19.8 m/min)  
Optional High Speed Motor:  
90–1440 IPM (2.3–36.6 m/min)  
H: 14 in (356 mm)  
W: 12 in (305 mm)  
D: 26-1/2 in (673 mm)  
58 lb (26 kg)  
Control Panel  
1
2
1. Voltage Display Meter  
2. Wire Speed Display Meter  
3. Wire Feed Speed Select  
4. Trigger Hold  
5. Voltage Select  
6. Jog/Purge  
3
4
5
6
S-74 MPa  
24V Wire Feeder  
4
 

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