Lincoln Electric V300-PRO - Manual

– 6 – Thank You for selecting a QUALITY product by Lincoln Electric. We want youto take pride in operating this Lincoln Electric Company product••• as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manua...

PRODUCT DESCRIPTION The Invertec V300-PRO is a 300 amp arc weldingpower source that utilizes single or three phase inputpower to produce either constant voltage or constantcurrent outputs. The V300-PRO is designed for 60 Hzsupply systems. The welding response of the Invertech a s b e e n o p t i m i...

– – 8 – INPUT VOLTAGE SETUP POWER CORD CONNECTION A 10 ft. (3.0m) power cord is provided and wired intothe machine. Follow the power cord connectioninstructions. Incorrect connection may result in equip-ment damage. Single Phase Input 1. Connect green lead to ground per U.S. National Electrical Code...

– 9 – – 9 – remote control adapter and K857 remote controlare required for remote output control). 5. Set the meter polarity switch on the rear of the Invertec to coincide with wire feeder polarity used.The wire feeder will now display the welding volt-age. 6. If K480 is not available, see connectio...

LN-9 GMA Connection Instructions 1. Turn the Invertec power switch “off”. 2. Connect the K596 control cable assembly from the LN-9 GMA to the Invertec control cable connector.The control cable connector is located at the rearof the Invertec. 3. Connect the electrode cable to the output terminal of p...

– 11 – OPERATING INSTRUCTIONS DUTY CYCLE The Invertec is rated at 300 amps, 60% duty cycle for3 phase inputs (based on a 10 minute cycle). It is alsorated at 250 amps, 100% duty cycle. CONTROL FUNCTION / OPERATION Power Switch - Place the lever in the “ON” position toenergize the machine. When the p...

– 13 – Meter Polarity Switch The wire feeder polarity switch is located at the rear ofthe machine. The switch provides a work connectionfor wire feeder voltmeters. Place the switch in theposition of the electrode polarity indicated by thedecal. The switch does not change the weldingpolarity. Auxilia...

– 15 – TROUBLESHOOTING GUIDE Trouble What To Do Not output but fan operates and meter is on. Poor welding, weld settings drift, or output power islow. Main fuses open or Switch PC boards overheated. Output turns on momentarily then switches off andrepeats. Machine is connected for 380 VAC or higheri...

– – 16 – TEST PROCEDURES Step 1A 1B 2 3A 3B Next Test Step 1B 2 3A 3B 4 and 5 Test Output pilot circuit(set S4 on) Protection PCboard output (setS4 on) Static capacitorbalance (set S4off) 380 VAC inputand higher test Dynamic capaci-tor balance (setS4 on) 380 VAC inputand higher test Repair Action Re...

– 21 – Replacement of Power Modules and OutputDiodes Input rectifier, D13, is a power module. When mount-ing power modules, the heat sink and module mount-ing surface should be clean and free of burrs and for-eign material. Apply heatsink compound (Dow 340) asa uniform layer ideally .010” thick, to ...

– 22 – TURN THE POWER SWITCH OF THE WELDING POWER SOURCE "OFF" BEFORE INSTALLING PLUGS ON CABLES OR WHEN CONNECTING OR DISCONNECTING PLUGS TO WELDING POWER SOURCE. STRAIGHT PLUG (14 PIN) TO POWER SOURCE CABLE RECEPTACLE (6 SOCKET) CABLE RECEPTACLE (14 SOCKET) TO: 1) LN-7 WIRE FEEDERS TO: 1) ...

– 23 – INSTALLATION INSTRUCTIONS THIS CONNECTOR IS MEANT TO BE USED WITH LINCOLN POWER SOURCES WHICH HAVE A 14-PI N TO ANY OF THE 14 CIRCUITS PRESENT IN THE WIRE FEEDER RECEPTACLE. WIRE FEEDER RECEPTACLE. IT IS DESIGNED TO ALLOW THE USER TO MAKE CONNECTIONS CONSULT THE WIRING DIAGRAM OF THE POWER SO...

– 26 – N.A. WELDING CABLE MUST BE SIZED FOR CURRENT AND DUTY CYCLE OF APPLICATION. N.B. DIAGRAM SHOWS ELECTRODE POSITIVE. TO CHANGE POLARITY, TURN POWER "OFF", REVERSE ELECTRODE AND WORK CABLE AT POWER SOURCE. N.C. INSULATE EACH UNUSED LEAD INDIVIDUALLY. TO WORK - + 14 PIN AMPHENOL N.C. 76 8...

– 27 – Only qualified persons should install, use or service this machine. using the disconnect switch at the fuse box WARNING Turn off input power to the Welding Power Source Before connecting the wire feeder. ELECTRIC SHOCK CAN KILL N.A. WELDING CABLE MUST BE SIZED FOR CURRENT AND DUTY CYCLE OF AP...

– 29 – TO WORK + POWER SOURCE INVERTEC DC TIG STARTER - WARNING ELECTRIC SHOCK CAN KILL Only qualified persons should install, use or service this machine. Turn off input power to the Welding Power Source using the disconnect switch at the fuse box before connecting the DC Tig IN OUT K900-1 TO TIG T...

– 30 – Only qualified persons should install, use or service this machine. using the disconnect switch at the fuse box WARNING Turn off input power to the Welding Power Source Before connecting the wire feeder. ELECTRIC SHOCK CAN KILL N.A. WELDING CABLE MUST BE SIZED FOR CURRENT AND DUTY CYCLE OF AP...

– 32 – CONTROL CONTROL PANEL ARC FORCE/INDUCTANCE 2 2W R1 1 227 /INDUCTANCE CONTROL TERMINAL CHOKE 10K 215 227 4 303 301 CW (MAX) METER TOP S2 C5 L3 R8 D2 SHUNT 1 211A 3 8 1 BOARD 9 CONNECTOR CAVITY NUMBERING SEQUENCE OUTPUT TERMINAL S4 R = RED 2 4 3 J2 J1 1 301 4 TP4 4 5 W L4 9D 12B 12D 9C 1 5 R5 R...

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