Service manual

S0740 800 179/E071123/P64
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ct33a1heat
15ST2 Thermal overload switch
1. Clean the heat sink and apply thermal conducting paste to the thermal
overload switch as described above.
2. Fit the thermal overload switch and tighten the screw to 2 Nm.
18AP2:
IC1, IC2,
AC power board with IGBT modules
1. Clean the heat sink and apply thermal conducting paste as described
above.
2. Fit the power board with the two IGBT modules to the heat sink.
3. Tighten the screws, that secure the modules to the heat sink, to a torque of
2.5 Nm, and then further tighten them to 4.0 Nm.
4. Fit the busbars to the modules and tighten the connections to the busbars
to 4.0 Nm.
CAUTION!
Incorre ctly fitted components can cause failure. Do not tighten the screws to
more than 4.0 Nm.