1.
2.
-
-
N O T I C E
ELECTROSTATIC DISCHARGE
Electrostatic discharge can damage components.
Ensure discharge before touching internal frequency converter components, for example by touching a grounded, conduc-
tive surface or by wearing a grounded armband.
2.2 Installing the IGBT Module
For IGBT module disassembly procedures, refer to service guide. To install the replacement IGBT module or brake IGBT module, use
the following steps.
N O T I C E
THERMAL INTERFACE
A proper thermal interface is required between the IGBT module and heat sink. Failure to follow these instructions results in a
poor thermal bond and causes premature IGBT failure.
Ensure that the environment is free of airborne dust and contaminants while applying the thermal grease.
Clean the heat sink using a cloth and solvent or alcohol solution to remove debris and remaining thermal grease.
With the syringe, apply a layer of thermal grease to the bottom of the IGBT module in the pattern shown in
e3
0b
h9
96
.1
0
1
2
Illustration 1: IGBT Thermal Grease Pattern
1
Bottom of IGBT module
2
Thermal grease
Once the module is mounted, thermal grease seeps out to coat the area between the module and heat sink. Excess
grease is acceptable.
AN361427984575en-000101 / 130R0770
4 | Danfoss A/S © 2022.03
Installation
IGBT Module Replacement for Fx09-Fx12 and E1h–E4h
Installation Guide
