EN
1.2.2 About welding
In addition to the welding machine, welding outcome is influenced by the work piece to be
welded, welding technique and the welding environment. Therefore, recommendations in this
manual must be followed.
During welding, an electric welding circuit is created between the filler wire and the welded
piece. On delivery, the welding gun euro connector is connected to the positive pole. The
terminals are located inside the wire feed case door and should not be changed unless you
intend to run a filler wire that is directed to be used in reverse polarity, electrode negative.
When a filler wire is loaded to the machine and the gun trigger is pressed, the wire feed
mechanism drives the filler wire through the wire liner to the contact tip mounted in the
welding gun. The earth return socket on the back of the machine is set as the negative
terminal, and when connected to the workpiece via the earth return lead, it completes the
welding circuit.
When the filler wire touches the work piece, a short circuit occurs, forming the needed closed
electrical circuit. A welding arc is formed and welding commences. Unrestricted current flow
is possible only when the earth return clamp is properly attached to the workpiece and the
fixing point of the clamp to the workpiece is clean, and free from paint and rust.
Wire feed autostop function
Kempact RA is equipped with a security feature that automatically stops the wire feed and
shielding gas flow and cuts the voltage from the wire, if the welding gun trigger is held down
for more than 30 seconds without arc ignition.
2.
PREPARATIONS
NOTE!
Please read the separate safety instruction booklet provided before you commence welding.
Pay particular attention to the risks associated with fire and explosion.
2.1 Unpacking
Make sure that you select appropriate wire feed rolls/groove type, welding gun contact tip
and wire liner, and also ensure that the machine polarity is correctly set for the material filler
type used. If using aluminium or stainless steel filler wire, we recommend you change the wire
liner to a Kemppi plastic type, which is better suited for the material.
Before using the equipment, always make sure it was not damaged during transportation.
Also check that you have received what you ordered and that there are instructions for it.
The packaging material of the products is suitable for recycling.
Environment
The machine is suitable for both indoor and outdoor use, but it should be protected from rain
and sunshine. Store the machine in a dry and clean environment and protect it from sand and
dust during use and storage. The recommended operating temperature range is –20…+40 °C.
Place the machine in such a way that it does not come in contact with hot surfaces, sparks and
spatters. Make sure the air flow into the machine is unrestricted.
Kempact RA 181A, 251R, 251A, 253R, 253A, 253RMV, 253AMV, 323R, 323A, 323RMV, 323AMV
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