3.11. Placing and installation
Due to the stability ensuring it is necessary to place the source on a flat and solid
base. Overturning of the source in operation can cause accident of the operator or
life hazard.
In the area with fire and explosion risk it is necessary to follow the special
regulations. Before the source is switched on, it is necessary to check whether the
other persons cannot be endangered.
4.
Thermal and short-circuit protection
4.1.
Thermal protection
The source is equipped with a thermal protection, which protects it from damaging or
destroying when exceeding the load factor (see point 2).
When the thermal protection is effective, the converter is blocked and there is neutral
voltage on the source output.
This state is signalled by the yellow indicator “TEMP” on the front panel.
The cooling ventilator is also in operation at this state. Therefore do not switch the
source off to allow it to cool down.
The thermal protection automatically restores the source function after cooling down
and the yellow indicator TEMP is off.
ATTENTION!
After the thermal protection effect, put the electrode holder on insulated place so that
accidental short-circuit could not occur after restoring of the source function and thus
a possible accident or damage to property could not occur.
4.2. Short-circuit protection
When putting the source output into a long-term short-circuit in the MIG/MAG mode
(longer than ca. 0.5 sec.), it will be blocked and on the front panel the red warning
light "ERROR" will be on.
Restoration of the source function will be made by switching off the main switch and
by switching it on again after ca. 1 sec. Before this it is necessary to remove the
short-circuit, which caused the source blocking.
5. Putting into operation
5.1. Preparation of the source for putting into operation
Read the previous chapters, especially the chapter
“3. Safety regulations”
prior the
first putting into operation.
Points 5.1.1 – 5.1.3. are valid for all welding processes for which the source is
designated.
