Kemppi KEMPACT 253R User Manual

EN
1.2.2 About welding
In addition to the welding machine, welding outcome is inuenced 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 ller 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 ller wire that is directed to be used in reverse polarity, electrode negative.
When a ller wire is loaded to the machine and the gun trigger is pressed, the wire feed
mechanism drives the ller 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 ller 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 ow
is possible only when the earth return clamp is properly attached to the workpiece and the
xing point of the clamp to the workpiece is clean, and free from paint and rust.
2. PREPARATIONS
NOTE! Please read the separate safety instruction booklet provided before you commence welding.
Pay particular attention to the risks associated with re and explosion.
2.1 Unpacking
When the machine leaves the factory, the wire drive system and gun it is set for use with
ferrous ller wire (181/251 models WHITE 0.8 wire feed rolls and 253/323 models RED 1.0
wire feed rolls). If you wish to use an alternative thickness ller wire or type, make sure that
you select appropriate feed rolls/groove size, welding gun contact tip and gun liner, and also
ensure that the machine polarity is correctly set for the material ller type used.
If using aluminium or stainless steel ller 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 ow into the machine is unrestricted.
2.2 Positioning and location of the machine
Place the machine on a rm, dry and level surface. Where possible, do not allow dust or other
impurities to enter the machines cooling air ow.
Notes for positioning the machine
• The surface inclination should not exceed 15 degrees.
• Ensure the free circulation of the cooling air. There must be at least 20 cm of free space
around the machine for cooling air to circulate.
• Protect the machine against heavy rain and direct sunshine.
NOTE! The machine should not be operated in the rain as the protection class of the machine,
IP23S, allows for outside preserving and storage only.
NOTE! Never use a wet welding machine.
Kempact 251R, 253R, 323R, 181A, 251A, 253A, 323A
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Kemppi KEMPACT 253R Specifications

General

Brand	Kemppi
Model	KEMPACT 253R
Category	Welding System
Language	English