Lincoln Electric PRESTO 275 Manuals

Manuals and User Guides for Lincoln Electric PRESTO 275. We have 1 Lincoln Electric PRESTO 275 manual available for free PDF download: Service Manual

Lincoln Electric PRESTO 275 Service Manual

Lincoln Electric PRESTO 275 Service Manual (70 pages)

Brand: Lincoln Electric | Category: Welding System | Size: 5.43 MB

Table of Contents

Table of Contents
2
Technical Specifications
3
Electromagnetic Compatibility (Emc)
4
Safety
5
Maintenance
17
Major Components Location
18
Theory of Operation
19
Input Section
20
Inverter and Output Sections
21
Control Board - Tft Ui Board
22
Troubleshooting and Repair Section
25
How to Use Troubleshooting Guide
26
Case Cover Removal and DC Bus Capacitor Discharge Procedure
29
Presto ® 275 - Side Panels Removal
30
DC Bus Capacitors Discharge Procedure
31
Emi Filter Board Resistance Test
32
Input Rectifier Resistance Test
34
Inverter Board and Output Diodes Resistance Test
36
Thermal Protection Resistance Test
39
Output Studs Resistance Test
41
Emi Filter Board Voltage Test
43
Input Rectifier Voltage Test
45
Preload Board Voltage Test
47
Aux. Power Supply Board Voltage Test
49
Inverter and Output Board Voltage Test
51
Control Board Voltage Test
53
Disassembly Operations
56
Retest after Repair
67
Electrical Schematics
68
Error Codes
69
Note
70

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