Operation Manual
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A7 TIG Orbital System 150© Kemppi Oy 2016 1615
OPERATING MANUAL
1.4 Controller unit
A7 TIG Orbital System 150 power source and cooling unit
are integrated inside the controller unit. This unit also
involves a printer to print welding parameters on paper.
The parameters can be saved on a memory stick through
the USB port. Programs can be stored in internal memory
(100) and saved on a memory stick.
1.4.1 Front panel
A7 TIG Orbital System 150 features a clear color display, a
control knob, and press buttons. Its intuitive graphical user
interface oers easy-to-use menus and auto programming
for automatic calculation of welding parameters, including:
• Electrode length calculator
• Creation of custom programs
• Instructions and information for the operator.
The power source front panel provides the controls to
develop, save, and call up welding programs.
1.4.2 Gas flow
The power source is equipped with a gas ow sensor that
is factory preset. Shielding gas must be owing to the
weld head to initiate a welding arc.
• If gas ow is insucient, pressing the Start Weld
button will not initiate a welding arc.
• If the gas ow is interrupted during welding, the
sensor will immediately extinguish the arc. A
warning message is displayed.
1.4.3 Water cooler
The controller unit contains an integrated water cooler
that monitors water circulation, and any failure or block
causes an alarm.
The water ow function is factory calibrated. Interruption
or insucient water ow (less than 0.5 LPM) results in
termination of welding and a warning message on the
display.
Water ow
The water ow sensor has a factory preset trip point that
is not adjustable.
• If water ow is insucient to actuate the
sensor, a welding arc cannot be initiated.
• Pressing Start Weld causes pre‐purge. When the
arc should be initiated, the starting sequence is
interrupted and a warning is displayed.
1.5 Compatibility
A7 TIG Orbital System 150 controller is compatible with
the 150 series of weld heads.