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10.7. Replacing components in DRU
Converter service tools from the toolbox (3BHB008753R0001) for standard converters are
required to carry out these procedures eg, a spreading tool (see chapter 3, Service tools,
page 31).
A pressure loading spanner is attached to the bottom of the DRU frame.
There are two types of spreader tools available. Type 2 is the preferred tool when working
on the diode stack of the LSU (see Fig. 10–42).
10.7.1. General
Service MTTR 2 - 4 h
After faulty semiconductors have been identified, they have to be exchanged according to
the procedures below.
CAUTION
▶ All stacks containing semiconductors must be released before using the
spreading tool.
1
Figure 10–42 Spreader tools
1) Type 1 spreader tool
To ensure sufficient cooling, each stack is clamped with a specified clamping force. To
exchange semiconductors, the clamping force must be released.
PRODUCT
PCS6000
2) Type 2 spreader tool
DOCUMENT KIND
Service manual
REPLACING POWER AND COOLING COMPONENTS
2
DOCUMENT ID.
3BHS600000 E80
REV.
LANG.
PAGE
F
en
178/272
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