Kemppi Evo 300 - Manual (Page 15)

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© Kemppi Oy / 1515
EN
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 Evo 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.
MM
T32
l/min
5
10
20
15
NOTE! The shielding gas flow rate set from the gas cylinder regulator must exceed the flow rate
measured at the welding gun. If these rates are the same, the gas indication light will shine on the
control panel and welding is prevented.
2.6.5 reversing polarity
Some filler wires are recommended to be welded with the gun in the negative pole, so the
polarity should be reversed. Check the recommended polarity from the filler wire package.
to reverse polarity:
1. Disconnect the machine from the mains.
2. Pull away the rubber covers to expose the terminal pole connections and allow access to
the Allen screws.
3. Using the Allen key attached to the wire cabinet wall, unscrew the pole connection bolts.
Note the correct order of washers.
4. Interchange the cables.
5. Install the washers in the correct order and tighten the bolts firmly.
6. Replace the rubber covers correctly.
NOTE! The rubber cover must always protect the poles.