Operation Section - Lincoln Electric SVM138-A Service Manual

Section B-1
Operation
Operating Instructions .................................................................................................................B-2
Safety Precautions ......................................................................................................................B-2
General Description ....................................................................................................................B-3
Recommended Processes and Equipment.................................................................................B-3
K424 LN-9 GMA 2-Roll and K568-1 LN-9 GMA 4-Roll.........................................................B-3
K436 LN-9F GMA 2-Roll and K538-1 LN-9 GMA 4-Roll ......................................................B-3
DC Constant Voltage Power Sources ..................................................................................B-4
Controls and Settings..................................................................................................................B-5
Circuit Protection and Automatic Shutdown .........................................................................B-8
Avoiding Grounding Lead Protector (GLP) Shutdown..........................................................B-8
Drive Roll Installation ................................................................................................................B-10
Changing Drive Rolls for 2-Roll Wire Feeders ...................................................................B-10
Changing Drive Rolls for 4-Roll Wire Feeders ...................................................................B-12
Wire Loading .............................................................................................................................B-14
Loading a 22 to 30 lb. Reddi-Reel Package.......................................................................B-14
Loading a 10 to 30 lb. Spool ..............................................................................................B-15
Loading 50 to 60 lb. Coils...................................................................................................B-16
Loading and Feeding 13-14 lbs. Innershield Coils .............................................................B-17
Idle Roll Pressure Setting .........................................................................................................B-18
2-Roll Wire Feeders............................................................................................................B-18
4-Roll Wire Feeders............................................................................................................B-18
Making a Test Weld and Adjusting Response and Starting ......................................................B-19
Adjust the Power Source ....................................................................................................B-19
Adjust the LN9 GMA Controls ............................................................................................B-19
Voltage Control Response..................................................................................................B-20
Starting Characteristics.......................................................................................................B-20
Making a Weld ....................................................................................................................B-21
Procedure at End of Coil...........................................................................................................B-21
Security of Weld Procedure Settings ........................................................................................B-21
TABLE OF CONTENTS

- OPERATION SECTION -

LN-9 GMA Wire Feeder
Section B-1