Fronius AccuPocket 150/400 TIG Operating Instructions Manual page 38

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On/Off button
for switching the power source on and off.
The button must be pressed for at least two seconds before it responds (to protect
against accidental operation)
Adjusting dial
TAC indicator
lights up when the tacking function is activated
(only on TIG devices during the TIG welding process)
Setting value button
for selecting the desired setting value (1)
Status indicators
display various operating modes of the power source:
- VRD - lights up if the (optional) VRD safety device is present and the re-
duced safety voltage is present at the welding sockets
- Setup - lights up in Setup mode
- Temperature - power source outside the permitted temperature range
- Error - see Troubleshooting section on page 57