Controller Unit; Front Panel; Gas Flow; Water Cooler - Kemppi A7 TIG Orbital System 150 Operating Instructions 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 offers 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 flow sensor that
is factory preset. Shielding gas must be flowing to the
weld head to initiate a welding arc.
• If gas flow is insufficient, pressing the Start Weld
button will not initiate a welding arc.
• If the gas flow is interrupted during welding, the
sensor will immediately extinguish the arc. A
warning message is displayed.
© Kemppi Oy 2016

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 flow function is factory calibrated. Interruption
or insufficient water flow (less than 0.5 LPM) results in
termination of welding and a warning message on the
display.
Water flow
The water flow sensor has a factory preset trip point that
is not adjustable.

1.5 Compatibility

A7 TIG Orbital System 150 controller is compatible with
the 150 series of weld heads.
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A7 TIG Orbital System 150
• If water flow is insufficient 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.
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