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TIG 250 AC-DC
Snap-On TIG 250 AC-DC Welder Manuals
Manuals and User Guides for Snap-On TIG 250 AC-DC Welder. We have
1
Snap-On TIG 250 AC-DC Welder manual available for free PDF download: Service Manual
Snap-On TIG 250 AC-DC Service Manual (37 pages)
Brand:
Snap-On
| Category:
Welding System
| Size: 1 MB
Table of Contents
Table of Contents
2
1 General Information
3
Introduction
3
General Service Policy
3
Safety Information
3
Electromagnetic Compatibility
3
2 System Description
4
Introduction
4
Technical Specifications
4
Description of TIG 250 AC/DC Power Source
4
3 Maintenance
7
Periodic Inspection, Cleaning
7
Operating Sequences
7
Control Panel Commands and Signals
7
Power Source TIG Operation
8
Troubleshooting
10
The Power Source Does Not Start, Control Panel off
10
Power Source Powered, Control Panel On, Fan (45) Stopped
12
System Powered, Display and Signals Do Not Show the Correct Values
13
The Start Button Produces no Effect
15
In TIG Mode, no Gas Flows from the Torch
16
In TIG Mode, Gas Flows from the Torch, the Arc Does Not Strike (no High Frequency)
17
In Open Circuit Operation, the Output Voltage Is Not Regular
19
In Resistive Load Operation, the Output Voltage Is Not Regular
22
AC Operation, Arc Unstable, Welding Irregular
24
Alarm Signals
25
Led (Y) Off. Power Source Output Voltage Greater than 48 Vac
25
Led (F) On. Temperature of the Transformer (46) or Inductor (50) too High, or Low Pressure of the Coolant Fluid
25
4 Components List
26
Power Source Art. 236.76 : See File Esp236.76.Pdf Enclosed at the End of the Manual
26
Components Table : See File Esp236.76.Pdf Enclosed at the End of the Manual
26
Spare Parts List
26
5 Electrical Diagrams
27
Power Source Art. 236.76 : See File Sche236.76.Pdf Enclosed at the End of the Manual
27
Waveforms
27
Output Voltage with Open-Circuit Power Source (Par. 3.3.7)
27
Firing Pulses for SCR1 with Open-Circuit Power Source (Par. 3.3.7)
27
Firing Pulses for SCR2 with Open-Circuit Power Source (Par. 3.3.7)
27
Output Current with Power Source Loaded in Table Conditions (Par. 3.3.8)
28
Output Voltage with Power Source Loaded in Table Conditions (Par. 3.3.8)
28
Firing Pulses for SCR3 with Power Source Loaded in Table Conditions (Par. 3.3.8)
28
Mains Filter Board (51) Code 5.600.993/A
29
Fuse Board (4) Code 5.602.288
29
Control Board (40) Code 5.602.293/A
30
Shut-Off Board (48) Code 5.602.289
31
Snubber Board (6) Code 5.602.294
32
HF Board (42) Code 5.602.290
32
HF-Filter Board (41) Code 5.602.291
33
Connector Board (49) Code 5.602.292
33
Diode Group (19) Code 3.200.090/A
34
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