Lincoln Electric Welding Inverter 350 MP

Warning: This procedure should be performed by trained personnel only

Enter the amount of electrode used

Cable removed from the wire feeder?

Contact tip removed from the gun?

Cable liner cleaned with air hose?

Sign off on the gun cable cleaning

Warning: This maintenance check requires trained personnel with PPE!

Wire drive mechanism inspected?

Cleaned with low pressure compressed air?

Warning: Do not use solvents for cleaning the idle roll because it may wash the lubricant out of the bearing

Drive roll changed if necessary?

Sign off on the drive rolls and guide plate maintenance

Remove the gas diffuser from the gun tube

Lay gun and cable out straight on a flat surface. Loosen set screw of the connector on the back end of the gun

Insert the untrimmed Liner into the back end of the gun

Seat Liner bushing into back of gun. Secure Liner by tightening set screw. Do not install the gas diffuser at this time

Lay the cable straight and trim Liner to 9/16”. Remove burrs

Install insulator and secure the gas diffuser into the tube

Sign off on the liner replacement

Turn off all settings in the weld mode

Disconnect the gun from the gun receiver bushing and cut the wire at the front of the machine

Make sure the gun and cable assembly are straight

Using a stop watch, pull the trigger for 10 seconds

Measure the wire from the tip of the torch to the end of the wire

The wire should measure just under 60 inches

Preform the gun calibration if the measurement is less than 57 or greater than 63

Hold “select” switch up while powering up machine

Release “select” switch when displays show “Pres sPin”

Turn the volts / trim knob until displays show “9un CAL”

Toggle the “select” switch up and release

Right display should display a number

Use the volts / trim knob to adjust the calibration value

Toggle the “select” switch up and release to save

The right display should scroll the word “SAVEd’