Rohr MINI-140PI Mode D'emploi page 5

MINI-140PI / MINI-180PI / MINI-220PI / SMINI-120NI / SMINI-140NI
Quick Start Guide - Welding
Manual Metal Arc welding uses an electrode stick to create a contact between
the material to be welded. This is held in place with the stick clamp.
Ensure that power is disconnected before connecting the welding cable (-) and ground cable
(+) to the machine. Ensure they are firmly connected before
1. You can connect the torch and earth clamp to either Positive or Negative Terminals. This is
considered straight or reversed polarity.
Note: Reversed polarity may be better suited for different metal types. Electrodepositive (reversed
polarity) results in deeper penetration. Electrode-negative (straight polarity) results in faster melt-off
of the elect rode and, therefore, faster deposition rate. When welding choose a polarity and if the weld
characteristics are unsuitable, change the polarity.
2. Attach the earth clamp to a conductive connected part of the weld surface.
3. Ground the unit by using the ground connecting screw at the back of the machine and connect
to a grounded metal point free from the weld surface.
4. Plug in the unit to the mains power supply (must be single phase) and switch on the unit.
5. Set the required amps based on the thickness of the metal to be welded.
6. You are now ready to start welding.
Note: An additional isolator switch is recommended when using the machine
Working Environment
1. The machine can perform in environments where conditions are dry with a maximum humidity
level of 90% and an ambient temperature between -10 to +40 degrees centigrade.
2. Avoid welding in direct sunshine or a wet/damp environment. If the machine comes into
contact with water, do not use the machine until it has been fully inspected by a qualified
professional.
3. Do not use the machine in an environment where the air is polluted with conductive dust.
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