Replacing The Secondary Diode - Fronius TransTig 170 Service Manual

Replacing the secondary diode

Replacing the
secondary diode
6
7
8
24
(2)
3
Bend the tab (3) and install the thermal conducting foils (4) on the modules of the BPS
170 / 190 PC board as shown.
Install the BPS 170 / 190 PC board according to the chapter "Installing the BPS 170 /
190 PC board".
Close housing as described in chapter "Closing the housing".
Open housing as described in chapter
1
"Opening the housing".
Remove the BPS 170 / 190 PC board
2
in accordance with the chapter "Remo-
ving the BPS 170 / 190 PC board".
Loosen the 2 M4x13 TX20 screws (1)
3
of the defective diode.
(2)
Clean the heat sink and modules on
4
the BPS PC board.
(1)
Place the new diode on the heat sink
5
as per stamping (2) and secure with 2
M4x13 TX20 screws (1):
Pretighten to 0.9 Nm.
Final tightening torque = 1.3 Nm.
3
(4)