RETURN TO MAIN MENU POWER MIG 350MP ® IM859 May, 2012 For use with machine Code Numbers: 11147For use with machine Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ... and thoughtful operation on your part. DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT.
i i SAFETY WARNING CALIFORNIA PROPOSITION 65 WARNINGS Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm. The Above For Diesel Engines The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. The Above For Gasoline Engines ARC WELDING CAN BE HAZARDOUS.
ii ii SAFETY ELECTRIC SHOCK can kill. 3.a. The electrode and work (or ground) circuits are electrically “hot” when the welder is on. Do not touch these “hot” parts with your bare skin or wet clothing. Wear dry, hole-free gloves to insulate hands. 3.b. Insulate yourself from work and ground using dry insulation. Make certain the insulation is large enough to cover your full area of physical contact with work and ground.
iii iii SAFETY WELDING and CUTTING SPARKS can cause fire or explosion. 6.a. Remove fire hazards from the welding area. If this is not possible, cover them to prevent the welding sparks from starting a fire. Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire extinguisher readily available. 6.b.
iv SAFETY PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suivantes: Sûreté Pour Soudage A LʼArc 1. Protegez-vous contre la secousse électrique: a. Les circuits à lʼélectrode et à la piéce sont sous tension quand la machine à souder est en marche.
v v Thank You for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product ••• as much pride as we have in bringing this product to you! CUSTOMER ASSISTANCE POLICY The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed their expectations.
vi TABLE OF CONTENTS Page ________________________________________________________________________ Installation.......................................................................................................................Section A Technical Specifications.......................................................................................................A-1 Safety Precautions ...............................................................................................................
A-1 A-1 INSTALLATION TECHNICAL SPECIFICATIONS – POWER MIG® 350MP INPUT – SINGLE PHASE ONLY Standard Voltage/Frequency 208/230/460/575/50/60 Hz Input Current @ 230Amp Rated Output Input Current @ 300 Amp Rated Output 50/48/25/20 Amps 76/64/37/29 Amps RATED OUTPUT Input Voltage/Frequency Hz 208/60 230/460/575/60 208/230/460/575/60 Duty Cycle 40% 60% 100% Amps 300 Amps 300 Amps 230 Amps Volts at Rated Amperes 32 Volts 32 Volts 29 Volts 208/230/460/575/50 208/230/460/575/50 40% 100% 300 Amps 230 Amps
A-2 INSTALLATION Read entire installation section before starting installation. SAFETY PRECAUTIONS WARNING ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing. • Insulate yourself from work and ground. • Always wear dry insulating gloves. • Do not use AC welder if your clothing, cloves or work area is damp or if working on, under or inside work piece. Use the following equipment: - Semiautomatic DC constant voltage (wire) welder.
A-3 A-3 INSTALLATION FIGURE A.1 — Triple Voltage Machine Input Connections 3. The POWER MIG ® 350MP is shipped with a 10ft.(3.05m) input cable and plug connected to the welder. Using the instructions in Figure A.2, have a qualified electrician connect the receptacle or cable to the input power lines and the system ground per the U.S. National Electrical Code and any applicable local codes. See “Technical Specifications” at the beginning of this chapter for proper wire sizes. For long runs over 100ft.
A-4 A-4 INSTALLATION GUN & CABLE ASSEMBLY INSTALLED INTO THE POWER MIG GUN AND CABLE INSTALLATION A Magnum 300 gun and 15Ft.(4.6m) cable are provided with the POWER MIG® 350MP. A Magnum cable liner for .035-.045" (0.9-1.2 mm) electrode and contact tips for .035” (0.9mm) and .045” (1.2mm) are included for 15Ft.. LINER INSTALLATION AND TRIMMING INSTRUCTION (SEE FIGURE A.3) 1.
A-5 INSTALLATION DO NOT ATTACH THE REGULATOR IF OIL, GREASE OR DAMAGE IS PRESENT! Inform your gas supplier of this condition. Oil or grease in the presence of high pressure oxygen is explosive. 3. Stand to one side away from the outlet and open the cylinder valve for an instant. This blows away any dust or dirt which may have accumulated in the valve outlet. WARNING INSTALLING TIG TORCH The POWER MIG® 350MP is programmed to allow it to be used as a DC TIG welder.
A-6 A-6 INSTALLATION FIGURE A.4 TIG TORCH POWER CABLE TO NAGATIVE STUD(-) REMOTE CONTROL RECEPTACLE WORK CABLE POSITIVE STUD (+) TO POSITIVE STUD(+) NEGATIVE STUD (-) WORK CLAMP WORK PIECE GAS SUPPLY CONNECTION FOOT AMPTROL (OPTIONAL) TO REMOTE CONTROL RECEPTACLE CONNECTOR TO GAS SUPPLY GAS HOSE FIGURE A.
B-1 OPERATION Read entire Operation section before operating the POWER MIG® 350MP. WARNING ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing. Insulate yourself from work and ground. COMMON WELDING ABBREVIATIONS WFS • Wire Feed Speed CC • Constant Current • Always wear dry insulating gloves. CV • Constant Voltage FUMES AND GASES can be dangerous. GMAW (MIG) • Gas Metal Arc welding • Keep your head out of fumes.
B-2 OPERATION PRODUCT DESCRIPTION The POWER MIG® 350MP is a complete semiautomatic multi-process DC arc welding machine offering CV and CC DC welding. It is rated for 350 amps, 32 volts at a 60% duty cycle. The standard machine is equipped to weld CC-Stick, CC-GTAW, CV-FCAW, and synergic and non-synergic CV-GMAW / GMAW-P and Pulse-on-Pulse and Power Mode welding processes. See the descriptions for Pulse on Pulse™and Power Mode welding processes later in this section.
B-3 B-3 OPERATIONS 2. VOLT / TRIM METER - This meter displays either the voltage or trim value depending on the status of the machine. Located below the display is the text "Volts" and "Trim." An LED light is illuminated to the left of one of these in order to indicate the units of the value displayed in the meter. 5. MULTI-PROCESS PANEL - This panel enables selection of weld modes as well as adjustment of certain weld parameters within each weld mode.
B-4 B-4 OPERATION SETTING AND CONFIGURING THE POWER MIG® 350MP FOR WELDING • Check that the electrode polarity is correct for the process and turn the Power Switch to the "ON" position. After the "boot-up" period (approximately 20 seconds), the POWER MIG® 350MP will default to the last preset weld mode that was active when the machine was powered down. The Multi-Process Panel defaults with the "Weld Mode" active. • Toggle the SET switch to the desired "Weld Mode" operation.
B-5 OPERATION MULTI-PROCESS PANEL FUNCTIONS Weld Mode Setting the Weld Mode is selecting the proper program from the ones available in the machineʼs memory for a particular welding application. The table on the right side of the front panel (See Figure B.2) gives information on the different programs available in this machine.
B-6 OPERATION Arc Control (See Table B.2) There are no specific unit values offered because the setting of this feature largely depends upon operator preference. Arc Control has a different effect on the character of the arc depending upon the welding process applied. In SMAW (STICK mode), arc control adjusts the arc force.
B-7 OPERATION In the case of special waveforms designed for pulsed welding aluminum, Pulse on Pulse™, the effect is similar to what occurs with standard pulse. As the Arc Control is increased from +1 to +10 the frequency of the Pulse on Pulse array increases. As the frequency increases the weld bead ripples become less distinct and the arc cone narrows.
OPERATION B-8 B-8 PROCEDURE FOR CHANGING DRIVE AND IDLE ROLL SETS 5. Rotate the spindle and adapter so the retaining spring is at the 12 o'clock position. 1. Turn off the power source. 6. Position the Readi-Reel so that it will rotate in a direction when feeding so as to be de-reeled from top the of the coil. 2. Release the pressure on the idle roll by swinging the adjustable pressure arm down toward the back of the machine. Lift the cast idle roll assembly and allow it to sit in an upright position.
B-9 B-9 OPERATION 4. Re-install the Retaining Collar. Make sure that the Release Bar “pops up” and that the collar retainers fully engage the retaining ring groove on the spindle. FEEDING WIRE ELECTRODE WARNING When triggered, the electrode and drive mechanism are electrically “hot” relative to work and ground and remain “hot” several seconds after the gun trigger is released. The pressure arm controls the amount of force the drive rolls exert on the wire.
B-10 B-10 OPERATION 5. Loosen the socket head cap screw that holds the connector bar against the gun bushing. Important: Do not attempt to completely remove the socket head cap screw. 6. Remove the outer wire guide, and push the gun bushing out of the wire drive. Because of the precision fit, light tapping may be required to remove the gun bushing. 7. Disconnect the shielding gas hose from the gun bushing, if required. 8. Connect the shielding gas hose to the new gun bushing, if required. 9.
B-11 OPERATION SPECIAL WELDING PROCESSES AVAILABLE ON THE POWER MIG ® 350MP PULSE WELDING (GMAW-P) The pulsed-arc process is, by definition, a spray transfer process wherein spray transfer occurs in pulses at regularly spaced intervals. In the time between pulses, the welding current is reduced and no metal transfer occurs. Pulsed-arc transfer is obtained by operating a power source between low and high current levels. The high current level or “pulse” forces an electrode drop to the workpiece.
B-12 B-12 OPERATION PULSE-ON-PULSE™ (GMAW-PP) When Arc Control is used in the Pulse on Pulse modes, it does the same things it does in the other pulsed modes: decreasing the Arc Control decreases the droplet transfer and weld deposition rate. Increasing the Arc Control increases the droplet transfer and weld deposition rate. Since Arc Control varies weld droplet transfer rate, the Arc Control can be used to vary the ripple spacing in the weld bead.
B-13 OPERATION POWER MODE™ The Power Mode™ process was developed by Lincoln to maintain a stable and smooth arc at low procedure settings which are needed to weld thin metal without pop-outs or burning-through. For Aluminum welding, it provides excellent control and the ability to maintain constant arc length. This results in improved welding performance in two primary types of applications. B-13 Start by setting the wire feed speed based upon material thickness and appropriate travel speed.
C-1 DRIVE ROLL KITS Refer to Table C.1 for various drive roll kits that are available for the POWER MIG® 350MP. All items in Bold are supplied standard with the POWER MIG® 350MP. TABLE C.1 Wire Size .023”-.030” (0.6-0.8 mm) .035” (0.9 mm) .045” (1.2 mm) .035-.045” (0.9-0.2mm) .040” (1.0mm) .035” (0.9 mm) Cored .045” (1.2 mm) Aluminum 3/64” (1.2 mm) Solid Steel C-1 ACCESSORIES Drive Roll Kit KP1696-030S KP1696-035S KP1696-045S KP-1696-1 KP-1696-2 KP1697-035C KP1697-045C KP1695-3/64A *.
C-2 Non-Synergic Weld Modes (Mode 5) • Voltage is adjustable at the power source. The right control knob on the power source will adjust the voltage that is displayed in the meter directly above it. • • The left Display (WFS / AMPS) on the POWER MIG® 350MP will have 4 dashes (----) to indicate that the left control knob on the power source is inactive. Wire Feed Speed is set at the Spool Gun.
D-1 MAINTENANCE SAFETY PRECAUTIONS D-1 CONTACT TIP AND GAS NOZZLE INSTALLATION WARNING ELECTRIC SHOCK can kill. • Have an electrician install and service this equipment. • Turn the input power off at the fuse box before working on equipment • Do not touch electrically hot parts. GENERAL MAINTENANCE In extremely dusty locations, dirt may clog the air passages causing the welder to run hot.
D-2 D-2 MAINTENANCE CAUTION Excessive pressure at the start may cause the dirt to form a plug. ----------------------------------------------------------- Flex the cable over its entire length and again blow out the cable. Repeat this procedure until no further dirt comes out. If this has been done and feed problems are experienced, try liner replacement, and refer to trouble shooting section on rough wire feeding. 5. Seat Liner bushing into back of gun. Secure Liner by tightening set screw.
E-1 TROUBLESHOOTING E-1 WARNING Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.
E-2 E-2 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION Major physical or electrical damage 1. Contact your local authorized Lincoln Electric Field Service is evident when the sheet metal facility for technical assistance. covers are removed. Input fuses keep blowing, or input 1. Make certain that the fuses or breakers are properly sized.
E-3 E-3 TROUBLESHOOTING Observe Safety Guideline detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION OUTPUT PROBLEMS Output voltage and wire feed is present when gun trigger is not pulled (not activated). 1. Check Weld Mode to make sure the unit is in a CV Mode And not a CC Mode. 2. Remove gun assembly from machine. If problem is solved gun assembly is faulty. Repair or replace. 3.
E-4 TROUBLESHOOTING E-4 Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION FEEDING PROBLEMS Rough wire feeding or wire will not feed but drive rolls are turning. 1. The gun cable may be kinked or twisted. 2. The wire may be jammed in the gun cable, or gun cable may be dirty. 3. Check drive roll tension and position of grooves. 4. Check for worn or loose drive rolls. The wire feed stops while welding.
E-5 E-5 TROUBLESHOOTING Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION GAS FLOW PROBLEMS Gas does not flow when gun trigger is pulled. 1. Make sure gas supply is connected properly and turned “on”. 2. If the gas solenoid does actuate (click) when the gun trigger is pulled there may be a restriction in the gas supply line. 3. The gun cable assembly may be faulty. Check or replace.
E-6 E-6 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual Fault Codes Code 39 44 47 81 82 Description Glitch on the primary over current fault interrupt; possibly caused by noise or a signal level (misc. hardware fault #1) Main CPU problem. The DSP has detected a problem with the CPU. Glitch on the CAP/heart beat interrupt; possibly caused by noise or a signal level right at the trip threshold. (misc. hardware fault #2) Motor overload-average motor current exceeded 8.
E-7 E-7 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION PUSH PULL WIRE FEEDING PROBLEMS While loading wire, the rear drive rolls stop while pushing wire through the torch. 1. Check torch cable for kinks. Torch cable should be laid out relatively straight. 2. Check to see that the spindle brake is not set too tight. There should be an aluminum spacer behind the spindle brake.
E-8 E-8 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION PUSH PULL WIRE FEEDING PROBLEMS While loading wire the wire bird nests if the wire misses the outlet guide while shooting the gap in the torch. 1. Straighten the first six inches of the wire before feeding it into the rear wire drive. 2. Make sure the torch drive rolls are tightened slightly to help the wire jump the gap. 3.
E-9 E-9 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION PUSH PULL WIRE FEEDING PROBLEMS During Welding the wire continues to burn back to the tip. 1. Check to see that the spindle brake is not set too tight. There should be an aluminum spacer behind the spindle brake. Refer to the push-pull connection kit for this spacer. 2. POWER MIG® 350MP drive rolls set too tight.
E-10 TROUBLESHOOTING E-10 Observe all Safety Guidelines detailed throughout this manual PUSH PULL WIRE FEEDING PROBLEMS STALL FACTOR - an adjustment on the POWER MIG® 350MP that allows the welder to adjust the maximum amount of power going to the rear drive motor. The purpose is to send only enough power to the rear drive motor to pull the wire off the spool and get the wire up the torch liner. STALL FACTOR NUMBER ADJUSTMENT 1. Turn the POWER MIG® 350MP off. 2.
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number.
F-2 POWER MIG® 350MP M19231 DIMENSION PRINT 3-00F F-2
NOTES POWER MIG® 350MP
NOTES POWER MIG® 350MP
Do not touch electrically live parts or WARNING Spanish AVISO DE PRECAUCION French ATTENTION German WARNUNG Portuguese ATENÇÃO Keep flammable materials away. Wear eye, ear and body protection. Mantenga el material combustible Protéjase los ojos, los oídos y el electrode with skin or wet clothing. Insulate yourself from work and ground. No toque las partes o los electrodos bajo carga con la piel o ropa mojada. Aislese del trabajo y de la tierra.
Keep your head out of fumes. Use ventilation or exhaust to Turn power off before servicing. Do not operate with panel open or guards off. remove fumes from breathing zone. Los humos fuera de la zona de res- piración. Mantenga la cabeza fuera de los humos. Utilice ventilación o aspiración para gases. Gardez la tête à l’écart des fumées. Utilisez un ventilateur ou un aspira- Desconectar el cable de ali- mentación de poder de la máquina antes de iniciar cualquier servicio.
• World's Leader in Welding and Cutting Products • • Sales and Service through Subsidiaries and Distributors Worldwide • Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.
