Kemppi KM 300 User Manual

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3.3.7 Selection of liquid- or gas-cooled MIG gun

You can select a MIG gun cooled with liquid or gas by pressing buttons P3 and P4

simultaneously and holding them down for at least one second.

• When the display reads ‘GAS’, you can use a gas-cooled MIG gun with the equipment.

• When the display reads ‘COOLEr’, you can use a liquid-cooled MIG gun with the

equipment.

You can change the gun selection by pressing buttons P3 and P4 again, as above. With a

liquid-cooled gun selected, the liquid cooling function is started when the power source is

started the next time.

3.3.8 Retrieval of weld data

The weld data function allows you to return to the welding current and voltage used during

the previous session, with the weld data feature. To use the feature, press buttons P4 and P5

simultaneously.

3.3.9 Selection of control panel

Button P10 allows you to switch control between the control panels in the power source and

wire feeder. The indicator shows which of the control panels is in use.

• When the ‘LOCAL’ light is on, the wire feeding speed and welding current are set using

knobs P8 and P9 of the power source control panel.

• When the ‘REMOTE’ light is on, the wire feed speed and welding current are set using the

control panel of the wire feeder. Control knobs of the power source are disabled in this

mode.

3.3.10 Setting of the MIG operating mode

Button P7 allows you to set the MIG welding gun to either two-sequence or four-sequence

mode. The indicator shows the mode selected.

• In two-sequence mode (2T), welding is started by pressing the gun switch and stopped

by releasing the switch.

• In four-sequence mode (4T), the following actions take place:

1. When you press the gun switch, the shielding gas starts to flow.

2. When you release the switch, welding starts.

3. When you press the switch again, welding ends.

4. When you release the switch again, the flow of the shielding gas ends.

3.3.11 Setting of operation parameters

Button P7 also is used for changing welding parameters as follows:

• Depress button P7 for at least five seconds. The set-up menu appears on display P2.

• Select the parameter to adjust with the left-hand knob (P8) so that the name of the

parameter you want to adjust is shown on display P2.

• Set a value for the parameter by using the right-hand knob (P9) such that the value you

want is shown on display P2. The value you selected is recorded in the control panel

memory.

• Exit the set-up menu by pressing button P7 again and holding for at least five seconds or

by briefly pressing the control panel start button (P1).

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