Operation Manual
13
A7 MIG Gun 500-w© Kemppi Oy 2017 1712
OPERATING MANUAL
11.6 Connecting the control line
The control line is normally delivered with a pre-soldered amphenol plug, which is
compatible with the Kemppi wire feeder. Otherwise, choose a compatible plug for your
wire feeder and solder it to the corresponding wires in accordance with the assignment
plan.
Figure 7: Connecting the control line
The color codes are:
• a = green
• b = white
• c = brown
• d = yellow (insulated)
• e = gray (insulated)
• f = blue (insulated)
• g = pink (insulated)
• h = black
• i = purple
• j = red (insulated)
11.7 Setting the shielding gas quantity
This section describes how to set the amount of shielding gas.
The type and quantity of the shielding gas depend on the welding task and the gas
nozzle geometry.
To prevent the shielding gas supply from becoming clogged by impurities, the cylinder
valve must be opened briey before connection of the cylinder. This will blow out any
impurities that may be present.
Make all shielding gas connections gas-tight.
Proceed as follows:
1. Connect the shielding gas cylinder to the wire feeding system.
2. Set the gas quantity on the pressure reducer of the shielding gas cylinder.
11.8 Introducing the wire
This section describes how to introduce the wire.
Each time you change the wire, make sure that the beginning of the wire is burr-free.
Proceed as follows:
1. Insert the wire in the wire feed unit as specied by the manufacturer.
2. Press the “Current-less wire feed” button at the wire feed unit.