Siting The Machine; Connecting The Machine To The Mains Supply; Cable For Mma Welding And Return Current Cable; The Welding Torch - Kemppi MasterTig ACDC 3500W Operating Manual

2.2 Siting the machine

When siting the machine, the following have to be
considered:
Site the machine on a fixed dry base, which does not
cause dust etc. into the suction air of cooling.
• Make sure that the machine is placed away from
the line of particle spray from grinding tools.
• Ensure free circulation of the cooling air. Make
sure that there is at least a 20 cm free distance
both in front of and at the rear of the machine
for the circulation of the cooling air.
• Protect the machine against heavy rain and in
hot circumstances against direct sunshine.
2.3 Connecting the machine to the mains
supply
Note: The installation or replacement of the mains
cable and the plug may be carried out only by an
authorized electric shop or electrician.
Mastertig AC/DC 3500W
2500, 2500W, 3500W
The machine is delivered with a 5 m mains cable (4×2.5
mm2) without a plug. Mains cable is suitable for all mains
voltages with recommended fuse size (please look at
Technical data table). 4×6 mm2 cable can be connected
to the machine, if local regulations are requiring it.
Note: If you use greater fuse size than recommended
big short circuit current can cause extra damage in case of
failure.
© Kemppi Oy 2021
2.4 Cable for MMA welding and return
The welding cables have to be at least 50 mm2 copper
cables for Mastertig AC/DC 3500W. Thinner cables will
cause voltage losses and heating.
Connect the grounding clamp of the return cable
carefully, preferably directly to the piece to be welded.
Use as short welding cables as possible. Unnecessarily
long cables will lower the maximum output voltage
of the machine. Coiling of the excess cable lowers the
output voltage of the machine especially in AC welding
and decreases the ignition spark.
Clean the fastening surface of any paint and rust!

2.5 The welding torch

In Mastertig AC/DC 3500W, you can use either an gas-
cooled or a water-cooled torch. Make sure that the torch
you are using is designed for the maximum welding
current that you need.
6
MasterTig ACDC 3500W
current cable
Note! Never use a damaged torch!
R01