ABB Chapter 3 - Changing Diodes and Thyristors in LSU
ACS 6000 Maintenance Manual 3BHS202077 ZAB E01 Rev. C 3-5 (6)
In case a stack becomes misaligned, the coolers can be pushed back into
place and the semiconductors can be centered using a fixture as illus-
trated in
Figure 3-3
.
The two horizontal bars are fixed to the frame of the cabinet. By means of
the adjustment bolts, the wooden bar is pushed against the coolers thus
pushing the coolers back into place and holden them there. The semicon-
ductors can be centered one by one starting at the bottom of the stack.
The spreader tool is used to create the clearance for moving the semicon-
ductors into place. Since the space is very narrow it is recommended to
use a piece of wire shaped into a half moon to move the semiconductors.
Figure 3-3 Fixture
Wooden bar
Horizontal bar
Vertical bar
Horizontal bar
Adjustment bolts
To Next Page
Loading...
