EN2.2.2 Air-cooled system: FastMig X 450 + MXP1.4.5.10.6.8.2.3.7.9. VV1. Wire feed unit2. FastMig X 450 power source3. Gas supply4. MMA electrode holder5. Remote control device6. Air-cooled welding gun7. Power cable8. Earth return cable and clamp9. Measurement cable (from power source to wire feeder)10. Voltage sensing cable (from wire feeder to work piece)NOTE! MXP wire feeders can also be used with FastMig Pulse power source, but in that casemeasurement cable and voltage sensing cable will not be used.2.3 Assembly of MIG/MAG systemAssemble the units in the order mentioned below. Follow the additional mounting andoperation instructions delivered with each package.1. Installation of power sourceRead and follow the installation instructions given in the FastMig power source operatingmanual.2. Mounting of power sources to transport cartRead and follow the instructions given in the transport cart assembly instructions.3. Mounting the FastMig MXP wire feed unit to the power sourceRemove the cover sticker on top of the power source. Screw the fastening pivot into thepower source – hand tighten only. Place the supplied plastic spacers over the pivot. Lift theMXP wire feeder into place, locating over the pivot.4. Connecting cablesConnect the cables in accordance with the equipment notes provided in this manual.The polarity of the welding wire (+ or –) can be selected by connecting the wire feed unit toeither the positive or negative power source terminals.Most MIG/MAG applications run the wire feed unit connected to the positive terminal of thepower source.FastMig MXP 37 Pipe, MXP 386