ESAB Tig 4000i Aristo, Instruction Manual

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6.3 Fan control
The power source fans continue to run for 6,5 minutes after welding has stopped,
and the unit switches to energy--saving mode. They start again when welding
restarts.
The fans run at reduced speed for welding currents up to 144 A, and at full speed for
higher currents.
6.4 Overheating protection
The power source has two thermal overload trips which operate if the internal
temperature becomes too high, interrupting the welding current and lighting the
orange indicating lamp on the front of the unit. They reset automatically when the
temperature has fallen.
6.5 Cooling unit
Water lock
The cooling unit has a water lock that senses whether the cooling water hoses are
connected.
The power source On/Off switch must be in the “0” position (Off) when connecting a
water--cooled TIG torch.
If a water--cooled TIG torch is connected, the water pump starts automatically when
the main On/Off switch is turned to ”START” and/or when welding starts. After
welding, the pump continues to run for 6,5 minutes, and then switches to the
energy--saving mode.
Function when welding
To start welding, the welder presses the torch trigger switch. The power source
energises the torch and starts wire feed and the cooling water pump.
To stop welding, the welder releases the torch trigger switch. The welding current is
interrupted, but the cooling water pump continues to run for 6,5 minutes, after which
the unit switches to energy--saving mode.
Water flow guard
The water flow guard interrupts the welding current in the event of loss of coolant,
and displays an error message on the control panel. The water flow guard is an
accessory.
6.6 Remote control unit
Aristo machines with intergral control panels should have program version 1.21 or
higher, in order for the remote control to function correctly.
When the remote control unit is connected, the power source and wire feed unit are
in remote control mode; the buttons and knobs are blocked. The functions can only
be adjusted via the remote unit.
If the remote control unit is not to be used, the remote control unit must be
disconnected from the power source / wire feed unit, as otherwise it will remain in
remote control mode.
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