Miller Electric 350 LX, 250 DX User Manual
Processes
TIG (GTAW)
Stick (SMAW)
Pulsed TIG (GTAW-P)
(Optional)
Input Power Requires 1-Phase Power
Amperage Range 250: 3 – 310 350: 3 – 400
Max. Open-Circuit Voltage
80 VDC
Rated Output 250: 250 A at 30 VAC, 40% Duty Cycle
200 A at 28 VAC, 60% Duty Cycle
350: 350 A at 34 VAC, 40% Duty Cycle
300 A at 32 VAC, 60% Duty Cycle
Weight Standard: 250: 378 lb (172 kg) 350: 496 lb (225 kg)
TIGRunner
®
: 250: 478 lb (217 kg) 350: 596 lb (270 kg)
Industrial Applications
Precision Metal Fabrication
Maintenance and Repair
Light and Heavy Manufacturing
Aerospace
Shipbuilding
Tube and Pipe
Automotive
Vocational
Quick
Specs
See page 2 for
additional features
Syncrowave
®
250 DX/350 LX
TIG/Stick Welding
Power Source
Issued April 2008 • Index No. AD/4.2
The Power of Blue®.
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
Web Site
www.MillerWelds.com
International Headquarters
Phone: 920-735-4505
USA FAX: 920-735-4134
Canadian FAX: 920-735-4169
International FAX: 920-735-4125
The balance control is adjustable to provide
additional oxide removal (more cleaning) or less
cleaning based on the condition of the material
being welded. See pg 2 for more information on
this feature.
Syncro Start
™
allows the choice of Soft, Standard
or Hot TIG starts based on the application, lead
lengths and tungsten size.
Dual inline high-frequency points provide
intense high frequency for arc starting and
stabilization. Internal machine components are
protected from HF interference with additional
grounding and filtering for extended product life.
Digital welding meters display both amperage
and voltage for viewing of the actual and preset
values for greater accuracy and repeatability in
your welding procedure.
Last procedure recall simplifies changing your
Syncrowave back and forth from aluminum TIG
to stainless TIG to stick welding. One switch
makes all the control panel changes.
Standard Machine
Syncrowave Complete
Package includes:
Syncrowave
®
Coolmate™3X cooler
No. 37 running gear
TIG torch kit with
accessories
Foot pedal
Four gallons of coolant
Power source is warranted for 3 years, parts and labor.
Original main power rectifier parts are warranted for 5 years.
2
AC Output: Balance Control
Additional Features
Pulsed TIG control lowers the heat input into
the part and reduces warping and distortion
(optional on 250 DX models).
TIGRunner™system packages with
Coolmate™3X cooler. A 3-gallon cooling
system equipped with a visual flow indicator
ensures that the coolant is flowing. An external
coolant filter stops foreign objects from entering
the water cooled torch cable for better flow and
longer life. Extended cooling capacity ensures
maximum productivity. 3-year cooler warranty.
Stick welding features such as Adaptive
Hot Start
™
provide good arc strikes without
sticking. Once welding, the DIG control makes
dynamic adjustments to the welder to ensure
smooth E7018 and deep penetration E6010.
Tilted operator interface and built-in consumable
drawer provide added convenience to your
welding experience.
Arc timer/cycle counter records actual welding
time and number of arc starts. Great for estimating
job costs.
Squarewave technology developed and
patented by Miller Electric in 1976. Squarewave
technology was developed to improve your weld
quality and make TIG welding easier. Miller
Squarewave technology provides arc stability
when welding aluminum, prevents arc
rectification and eliminates tungsten erosion.
Welding aluminum? Oxides that form on
aluminum melt at temperatures over 3700° F.
The aluminum material that is located under
this layer of oxide melts at 1200° F. The
Syncrowave’s AC Squarewave welding current
automatically removes the layer of oxide which
is necessary for producing high quality welds.
Do you have power fluctuations?
The Syncrowave compensates for power
fluctuation without changing your welding
parameters. Line voltage compensation
works on fluctuating power ±10%.
NEW!
Easy Load Dual Cylinder Rack
➡
minimizes cylinder lifting. (Cylinder not included.)
AC Balance Balanced Wave Function
4
3
2
1
0
Balanced
4
3
2
1
0
Penetration
4
3
2
1
0
Max.
Cleaning
5
5
Max.
5
6
7
Medium bead
8
9
10
6
Narrower bead
7
for fillet welds
8
9
10
6
7
Wide bead
8
9
10
Narrow bead, with no
visible cleaning
No Visible Cleaning
Wider bead and
cleaning action
Bead
Cleaning
Bead
Bead
Cleaning
Balanced Wave
50%
Electrode
Positive
50%
Electrode
Negative
More Heat into Work
32%
Electrode
Positive
68%
Electrode
Negative
Greatest Cleaning Action
55%
Electrode
Positive
Electrode
Negative
45%
3
Specifications (Subject to change without notice.)
Model
Syncrowave
250
Syncrowave
250 CE
220/400/
440/520
Syncrowave
350
All Models
Rated Output
250 A at 30 V,
40% Duty Cycle
225 A at 29 V,
40% Duty Cycle
250 A at 30 V,
40% Duty Cycle
350 A at 34 V,
40% Duty Cycle
Welding
Amp Range
3–310 A
3–400 A
Max
OCV
80 V
80 V
Input
Power
60 Hz,
1-Phase
50 Hz,
1-Phase
50 or
60 Hz,
1-Phase
50 or
60 Hz,
1-Phase
Amps Input at AC Balance, Rated Load
200V 220V 230V 400V 440V 460V 520V 575V KVA KW
110 — 96 — — 48 — 38 22 12
101 — 88 — — 44 — 35 20 10
— 100 — 55 50 — 42 — 22 12
146 120 128 66 60 65 51 50 30 14
Dimensions
H: 33-1/4 in (845 mm)*
W:22-1/2 in (572 mm)
D: 25 in (635 mm)**
with TIGRunner
®
H: 46 in (1168 mm)*
W:28-1/2 in (724 mm)
D: 40-1/2 in (1029 mm)**
H: 33-1/4 in (845 mm)*
W:22-1/2 in (572 mm)
D: 25 in (635 mm)**
H: 33-1/4 in (845 mm)*
W:22-1/2 in (572 mm)
D: 25 in (635 mm)**
with TIGRunner
®
H: 46 in (1168 mm)*
W:28-1/2 in (724 mm)
D: 40-1/2 in (1029 mm)**
Weight
378 lb
(172 kg)
478 lb
(217 kg)
378 lb
(172 kg)
496 lb
(225 kg)
596 lb
(270 kg)
Certified to both the Canadian and U.S. Standards for welding equipment.
Note: See pg 6 for power factor correction kit. *Add 3 in (76 mm) for lift eye. **Add 1-1/2 in (38 mm) for handle.
Performance Data
DUTY CYCLE CHART
500
450
400
350
300
250
200
150
WELDING AMPERES
100
50
10 20 30 40 50 60 70 80 90 100
Syncrowave 350 LX
Syncrowave 250 DX
% DUTY CYCLE
RATED OUTPUT
Loading...