Miller S-74 Boom w/Drive Owner's Manual - Page 15
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3-1. Specifications
Type of Input
Welding Power
Power
Source Type
24 Volts AC
Constant Voltage (CV)
Single-Phase
DC With 14-Pin And
10 Amperes
Contactor Control
50/60 Hertz
Maximum Height With 4 ft (1.2 m)
Post
Vertical Lift Of Boom
4-1. Serial Number And Stock Number Label Location
The serial number and rating information for this product is located on the rear panel. For future reference, write serial number in space provided on
back cover of this manual.
4-2. Installing Swivel Into Pipe Post
Tools Needed:
3/4 in.
SECTION 3 − INTRODUCTION
Wire Feed Speed Range
Standard: 50 To 780 ipm
(1.3 To 19.8 mpm)
Optional High Speed: 92 To
1435 ipm (2.3 To 36.4 mpm)
8 ft (2.4 m) Boom
13 ft (3.9 m)
Horizontal to 60
Above Horizontal
SECTION 4 − INSTALLATION
2
1
Wire Diameter
Range
.023 To 5/64 in. (0.6
To 2 mm)
Max Spool Weight:
60 lb (27 kg)
12 ft (3.7 m) Boom
17 ft (5.2 m)
Horizontal to 60
Above Horizontal
5
4
3
Welding Circuit
Weight
Rating
12 ft (3.7 m):
100 Volts,
160 lb (73 kg)
750 Amperes, 100%
Duty Cycle
16 ft (4.9 m):
210 lb (95 kg)
16 ft (4.9 m) Boom
21 ft (6.4 m)
Horizontal to 60
Above Horizontal
1
Swingpak Base or CBC Cart
2
Pipe Post With Base
3
Steel Bolt
Secure as shown using as a mini-
mum 1/2 in. diameter SAE grade 5
steel bolts.
4
Swivel Assembly
Insert into pipe post. Lubricate
swivel.
5
Safety Collar
!
Do not remove until
instructed to.
ST-152 268-B
OM-252 045 Page 11