FitWeld Evo 300 [7/20] Connecting to mains

For quick help about starting with FitWeld, please refer to the Quick Guide delivered with the

product information package.

2.4.1 Connecting to mains

FitWeld Evo 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 rst time.

Check also that the mains cable complies with the local electrical regulations, and replace the

cable if necessary. See ’Technical specications’.

NOTE! The mains cable or wall plug may be installed or replaced only by an electrical contractor or

installer authorised to perform such operations.

2.4.2 Earth return cable

For creating a closed electric circuit needed in welding, you must connect the earth return

cable to the connector located on the back of the FitWeld. The other end of this cable will be

connected to the workpiece before welding.

NOTE! When attaching the earth return clamp to the work piece, remember to clean the work piece

surface so as to achieve safe and undisturbed operation.

2.4.3 Shielding gas

Secure the snap connector of the shielding gas hose to the gas connector on the back of the

FitWeld machine. Connect the other end of the gas hose to a gas cylinder’s control valve or to

the shielding gas distribution network at your worksite.

Make sure that you are using the correct type of shielding gas for the welding application.

The shielding gas used for steel wires is carbon dioxide or a mixture of argon and carbon

dioxide. The shielding gas used for stainless steel ller wires is a mixture of argon and carbon

dioxide (2%). For aluminium ller wires use pure argon shielding gas.

The thickness of the parent material, joint type and welding power dene the required

shielding gas ow rate.

To connect the shielding gas hose to a suitable regulator for MIG/MAG welding

1. Connect the shielding gas hose to the gas cylinder’s control valve and tighten the

connector (connector is not supplied in the package).

2. Adjust the shielding gas ow rate with the control valve screw.

3. Always close the cylinder valve after use.

NOTE! The shielding gas ow rate set from the gas cylinder regulator must exceed the ow rate

measured at the welding gun, if GasGuard function is active. If the ow rate and pressure are the

same, the gas indicator light will shine on the control panel and welding is prevented.

See also instructions and warnings about adjusting the FitWeld's gas ow rate later in this

manual.