Page 15
REMOTE WIRE SPEED ARC VOLTAGE DIAL RANGE CONTROL SWITCH (OPTIONAL) GAS POST/ PRE FLOW TIMERS (OPTIONAL) ELECTRODE POLARITY SWITCH FITTING (OPTIONAL) TRIGGER AMPHENOL CONNECTOR WIRE SPEED DIAL VOLT METER WORK CLIP LEAD CONNECTION BLOCK OPTIONAL GAS INPUT FITTING GAS PURGE BUTTON ELECTRODE CABLE...
Page 28
STYLE "A" CONNECTOR MUST BE INSULATED IN THIS AREA 2.00 LN-25 Connector for 1/16 (.062) through 5/64 Wire STYLE "B" LN-25 Cable Connector for .023 through .052 Wire (For all other dimensions, see above) .749 D. .747 .62 D. .03 x 45 .06R.
Page 31
Drive Motor and Gearbox Replacement Procedure Hall Effect Module...
Page 33
COLD OPTIONAL INCH CONTACTOR SWITCH BOARD ELECTRODE INPUT CABLE VOLT TO WORK METER CONTROL SENSING LEAD BOARD WIRE FEED MODE SWITCH SOLENOID PC BOARD EARLY MODELS ONLY - LATER MODELS HAVE CIRCUITRY OPTIONAL CONTACTOR CONDUCTOR BLOCK HALL EFFECT MODULE ARMATURE VOLTAGE RPM FEEDBACK RANGE SWITCH...
Page 34
COLD INCH SWITCH ELECTRODE INPUT CABLE VOLT TO WORK METER SENSING LEAD WIRE FEED MODE SWITCH OPTIONAL CONTACTOR OPTIONAL CONTACTOR BOARD ARMATURE VOLTAGE RPM FEEDBACK CONTROL BOARD RANGE SWITCH WIRE SPEED CONTROL SOLENOID PC BOARD SOLENOID EARLY MODELS ONLY - LATER MODELS HAVE CIRCUITRY INCLUDED ON CONTROL BOARD GUN CABLE CONDUCTOR...
Page 35
COLD INCH SWITCH ELECTRODE INPUT CABLE VOLT TO WORK METER SENSING LEAD WIRE FEED MODE SWITCH OPTIONAL CONTACTOR OPTIONAL CONTACTOR BOARD ARMATURE VOLTAGE RPM FEEDBACK CONTROL BOARD RANGE SWITCH WIRE SPEED CONTROL SOLENOID PC BOARD SOLENOID EARLY MODELS ONLY - LATER MODELS HAVE CIRCUITRY INCLUDED ON CONTROL BOARD CONDUCTOR GUN CABLE...
Page 36
COLD INCH SWITCH ELECTRODE INPUT CABLE VOLT TO WORK METER SENSING LEAD WIRE FEED MODE SWITCH OPTIONAL CONTACTOR OPTIONAL CONTACTOR BOARD ARMATURE VOLTAGE RPM FEEDBACK CONTROL BOARD RANGE SWITCH WIRE SPEED CONTROL SOLENOID PC BOARD SOLENOID EARLY MODELS ONLY - LATER MODELS HAVE CIRCUITRY INCLUDED ON CONTROL BOARD CONDUCTOR GUN CABLE...
Page 40
Step 1. LOCATE PROBLEM (SYMPTOM). Step 2. PERFORM EXTERNAL TESTS. Step 3. RECOMMENDED COURSE OF ACTION...
Page 46
(continued) CASE DOOR CONTROL BOX COVER SCREW line 37 5 SCREW WIRE REEL RETAINING COLLAR...
Page 76
(continued) CONTROL PC BOARD SCREW See Figure F.22.
Page 78
11/16" BRASS NUTS IN-LINE CONNECTORS VOLTAGE SENSING LEAD 67 REEL STAND ASSEMBLY WELDING CABLES CONTACTOR BAFFLE 5/16" SCREW...
Page 80
11/16" BRASS NUTS IN-LINE CONNECTORS POLARITY SWITCH WORK SENSING LEAD ELECTRODE CABLE VOLTAGE SENSING LEAD #67 ELECTRODE LEAD WELDING CABLES CONTACTOR...
Page 82
(continued) SOLENOID GAS SOLENOID PC BOARD VALVE PURGE SWITCH LEADS SOLENOID LEADS PLUG J11...
Page 83
(continued) SOLENOID PC BOARD SOLENOID LEADS PURGE SWITCH LEADS BRASS FITTING GAS SOLENOID VALVE GAS SOLENOID NIPPLE GAS HOSE GAS SOLENOID VALVE MOUNTING SCREW GAS SOLENOID ASSEMBLY BRACKET...
Page 84
GAS SOLENOID VALVE GAS SOLENOID NIPPLE GAS HOSE GAS SOLENOID ASSEMBLY BRACKET GAS SOLENOID VALVE MOUNTING SCREW PC BOARD MOUNTING SCREW (continued) BRASS FITTING GAS SOLENOID ASSEMBLY MOUNTING SCREW SOLENOID PC BOARD...
Page 88
(continued) DRIVE MOTOR HALL EFFECT MODULE GEARBOX REAR END PLATE LOCKWASHER FLAT WASHER END PLATE MOUNTING SCREW LOCKWASHER DRIVE MOTOR MOUNTING SCREW...
Page 93
This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. ¤ ¤...
Page 94
This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. ¤ ¤...
Page 95
This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine. ¤ ¤...
Page 96
G5366 CHANGE DETAIL: ENGINEERING CONTROLLED MANUFACTURER: LN-25 ACROSS THE ARC MODEL CODES 11144, 11145, 11146 Wire Drive Circuit Positive Voltage Feedback TOROI D Located behind the insulating wire drive panel. Remove the wire drive ably to gain access. Located behind the wire drive (European Models Only) TOROI D Not a PC board;...
Page 97
This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 98
This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 99
This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 100
This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 101
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
Page 102
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
Page 103
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
Page 104
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
Page 105
DIODES = 1A, 400V (UNLESS OTHERWISE SPECIFIED) SUPPLY VOLTAGE NET POWER SUPPLY SOURCE POINT COMMON CONNECTION FRAME CONNECTION EARTH GROUND CONNECTION EQUIP. LN-25 THE LINCOLN ELECTRIC CO. TYPE CONTACTOR SCHEMATIC CLEVELAND, OHIO U.S.A. SUBJECT NONE SCALE SHT. 9/28/90 DATE CHK.
Page 106
STANDARD This print is Current This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 107
This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 108
This diagram is for reference only. It may not be accurate for all machines covered by this manual. ¤ ¤...
Page 109
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
Page 110
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.
Page 111
Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician.