This user manual contains important information on the use, maintenance and safety of your Kemppi product. The technical specifications of the device can be found at the end of the manual. Please read the operating manual and the safety instructions booklet carefully before using the equipment for the first time.
1.9 MVA. Connecting cables Before you can start welding with FitWeld 300, you must connect the machine to the mains power supply, attach the welding gun and the earth return cable and the shielding gas supply. You must also equip the machine with a filler wire spool suitable for your welding application.
2.4.1 Connecting to mains FitWeld 300 is connected to a 3-phase network using the mains cable supplied with the machine. The cable is not equipped with a wall plug, so you must install a suitable plug before you use the machine for the first time.
Installing filler wire With FitWeld 300 you can use up to 200 mm diameter wire spools and the following filler wire types: • solid wires • flux-cored wires...
For reliable performance only use Kemppi gun liner materials specially developed for use with Kemppi machines. For information on recommended liners and wire feed rolls selection, please see the relevant sections later in this chapter.
For Aluminium and Stainless Steel filler wires, always use Kemppi DL Teflon gun liners. These liners are especially developed by Kemppi and significantly reduce friction loses, so improving welding performance.
2.5.5 Changing the feed rolls The FitWeld 300 standard delivery package is set up for welding with 1.2mm filler wires. However, there are different feed rolls for different welding wires, so you may occasionally need to replace the feed rolls.
Controlling welding functions With FitWeld 300 you can easily control welding parameters, change the welding polarity and gun operating mode. The control panel provides two adjustment knobs. You can set the desired welding voltage and wire feed speed before or during welding, so easily tuning the desired arc performance to the weld.
2.6.4 Adjusting the shielding gas flow Using a rotameter as shown in the picture, you can adjust the gas flow rate to the gun by turning the shielding gas adjustment regulation valve screw inside the FitWeld 300 wire cabinet. By turning the screw anticlockwise you increase the gas flow to the gun nozzle. Clockwise adjustment will reduce the gas flow rate.
Using the Allen key attached to the wire cabinet wall, unscrew the pole connection bolts. Note the correct order of washers. Interchange the cables. Install the washers in order and tighten the bolts firmly. Replace the rubber covers correctly. The rubber cover must always protect the poles. NOTE! FitWeld 300...
The owner of the equipment is obliged to deliver a decommissioned unit to a regional collection centre, per the instructions of local authorities or a Kemppi representative. By applying this European Directive you will improve the environment and human health.