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6.3 Fan control
The power source has a time control that means that the fans continue to run for 6.5
minutes after welding has stopped, and the unit switches to energy--saving mode.
The fans start again when welding r estarts.
The fans run at reduced speed for welding currents up to 110 A, and at full speed for
higher currents.
6.4 Overheating protection
The welding power source has overheating protection that operates if the
temperature becomes too high. When this occurs the welding current is interrupted
and a fault code is displayed on the control panel.
The overheating protection resets automatically when the temperature has fallen.
6.5 MIG/MAG and FCAW--S welding
An arc melts a continuously supplied wire. The weld pool is protected by shielding
gas.
For MIG/MAG and FCAW--S welding, the power source is supplemented with:
S wire feed unit
S welding torch
S connection cable between power source and wire feed unit
S gas bottle
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, r efer to accessories on page
17. 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.
6.6 TIG welding
TIG welding melts the metal of the workpiece, using an arc struck from a tungsten
electrode, which does not itself melt. The weld pool and the electrode are protected
by shielding gas.
For TIG welding, the welding power source is supplemented with:
S a TIG torch with ga s valve
S an argon gas cylinder
S an argon gas regulator
S tungsten electrode
GB
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