Miller Syncrowave 250 DX

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OM-363 Page 35

SEL

H-2

(CE Nameplate)

H‐4E

SEL

H4L

4T Momentary

(See Section 4-6)

SEL

4T (See Section 4-6)

H-4

SEL

Mini Logic (See Section 4-6)

Front Panel

Main Page

Table of Contents3
Section 1 − Safety Precautions - Read before Using7
Symbol Usage7
Arc Welding Hazards7
Additional Symbols for Installation, Operation, and Maintenance9
California Proposition 65 Warnings10
Principal Safety Standards10
EMF Information10
Section 2 − Definitions11
Warning Label Definitions11
WEEE Label (for Products Sold Within the EU)11
Symbols and Definitions12
Section 3 − Installation13
Serial Number and Rating Label Location13
Selecting a Location13
Dimensions and Weights14
Cooler Specifications14
Welding Power Source Specifications14
Duty Cycle and Overheating16
Volt-Ampere Curves17
Weld Output Terminals and Selecting Cable Sizes19
Remote 14 Receptacle Information20
Shielding Gas Connections and 115 Volts AC Duplex Receptacle20
TIG Connections with a Two-Piece Air-Cooled Torch21
TIG Connections with a One-Piece Air-Cooled Torch21
Front Panel Display for TIG HF Impulse DCEN (Direct Current Electrode Negative)22
Front Panel Display for TIG AC23
Optional Cooler Connections24
Stick Connections25
Front Panel Display for Stick DCEP (Direct Current Electrode Positive)26
Front Panel Display for Stick AC27
Electrical Service Guide28
Placing Jumper Links30
Connecting Input Power31
Section 4 − Operation32
Controls (350 LX Nameplates Shown)32
Output Selector Switch34
Process Control34
Amperage Control34
Output Control36
4T Momentary, and Mini Logoic Trigger Operation (Requires Optional Sequence Controls)38
Reconfiguring Trigger Hold for 4T and Mini Logic Control40
Selecting TIG Starting Characteristics Using Syncro-Startt Technology42
Start Mode44
Balance/Dig Control45
Preflow Time Control46
Pulse Controls (Standard on 350 LX Models, Optional on 250 DX Models)48
Sequence Controls (Optional)49
Initial Time Control and Initial Amperage Control50
Final Slope Control and Final Amperage Control51
Spot Time Control51
Timer/Cycle Counter52
Resetting Unit to Factory Default Settings (All Models)53
Section 5 − Maintenance54
Routine Welding Power Source Maintenance54
Routine Maintenance54
Circuit Breaker CB154
Adjusting Spark Gaps55
Section 6 − Troubleshooting56
Voltmeter/Ammeter Help Displays56
Troubleshooting the Welding Power Source57
Routine Maintenance for Optional Cooler58
Troubleshooting the Optional Cooler58
Coolant Maintenance and Oiling Motor59
Section 7 − Electrical Diagram60
Section 8 − High Frequency63
Welding Processes Requiring High Frequency63
Incorrect Installation63
Correct Installation64
Section 9 − Selecting and Preparing a Tungsten for DC or Ac Welding65
Selecting Tungsten Electrode (Wear Clean Gloves to Prevent Contamination of Tungsten)65
Preparing Tungsten Electrode for Welding with Phase Control Machines65
Section 10 − Guidelines for Tig Welding (Gtaw)66
Positioning the Torch66
Torch Movement During Welding67
Positioning Torch Tungsten for Various Weld Joints68
Section 11 − Parts List70
Section 12 − Parts List for Optional Cooler78
Options and Accessories82

Miller Syncrowave 250 DX - Page 41

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