Fronius BIAS 300 Plasma - Preparations and Final Steps

Preparations
(1) (3)(2) (1)
(1) (1)
(1)
(4)
(1)
(1)
(1)
Removing the left-hand and right-hand side pa-
nels
1
Turn the mains switch (4) on the
power source to the „O“ position
2
Unplug power source from the
mains
3
Disconnect all cables from the
power source (current cable, arc
bus cable, LHSB cables, etc.)
4
Remove the left-hand side panel
(2) of the power source:
Undo 8 TX20 screws (1)
5
Remove the right-hand side panel
(3) of the power source:
Undo 8 TX20 screws
WARNING!
Danger from electrical current.
An electric shock can be fatal.
▶
Before carrying out any work on the power source, discharge the intermedia-
te circuit capacitors using a resistor rated at 1 kOhm/9 W.
(a)
(b)
4
3
1
2
Discharging intermediate circuit capacitors
6
Discharge the intermediate circuit capacitors using a resistor rated at 1
kOhm/9 W:
-
Bypass block terminals 1 and 2 for at least 10 seconds using a resistor (a)
-
Bypass block terminals 3 and 4 for at least 10 seconds using a resistor (b)
55
EN