TIP TIG - TIG 500 COMPACT, OPERATING MANUAL
Page 34 of 58
7.
WELDING
7.1
Preparation
Safety
7.1.1
S-Test (AC only)
According to DIN EN 60974-1, a welding unit with a hazard reduction
device (in this unit a changeover device from AC to DC according to
DIN EN 60974-1, clause 13.2.2) must offer the possibility to test the
device without tools.
When the rotary knob is turned to the Test position, the unit will cycle
for max 0.3s at idle. This fault must be detected, the system switches
off, the green LED no longer lights up, 3 horizontal bars are flashing
in the display, the LED inverter fault lights up. Turn the rotary knob
back to the required welding mode, open the main switch and wait
until the display on the front does not light up. Then the switch can be
closed again, the device is ready for operation.
7.1.2
Forced switch-off
If, after pressing the torch key in 2-stroke and 4-stroke welding
operation, it does not ignite within 5 seconds, then the forced
shutdown takes place.
If the sequence is stopped by the torch button before the current
flows, it will be stopped directly without gas post flow.
WARNING
Perform this test daily before starting welding. If the green LED
does not go out and the welding unit does not switch off, the
device should be shut down immediately.
WARNING
Operating the equipment incorrectly can cause serious injury and damage. Do not use the
functions described until you have thoroughly read and understood the following
documents:
•
these operating instructions
•
all the operating instructions for the system components, especially the safe- ty rules
