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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 180 A, and at full speed for
higher currents.
6.4 Overheating protection
The power source has three 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
To ensure problem-free operation, the installation height from the cooling unit to the
welding gun must be max. 7 m. Heights in excess of this can cause problems, such
as long starting times, air bubbles, vacuums, etc.
If an installation height in excess of 7 m is required, we recommend an installation kit
comprising a non-return valve and a solenoid valve, refer to accessories on page 19.
Once these valves have been installed, the hose package must be horizontal during
the initial startup so that everything fills with water. Then raise the wire feed unit and
hose package to the high height. Continued safe operation at installation heights of
up to 12 m can now commence.
Function when welding
To start welding, the welder presses the welding gun trigger switch. The power
source turns on and starts the wire feed and the cooling water pump.
To stop welding, the welder releases the welding gun trigger switch. Welding ceases,
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
The program version in U8 should be 1.20 or higher. 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.
For more information about the operation of the remote control unit, see the
operating instructions for the control panel.
GB