Trane TR150 - Relay Transducer Card; Rectifier Modules; Igbt

7.4.5 Relay Transducer Card
1. Unplug cables on the relay transducer card.
2. Loosen the right cable connector using a hex 5
key.
3. Open the plastic clamp to remove the cables
from the connector.
4. Remove the 2 screws (T20) from the holding
bracket.
5. Remove the holding bracket.
6. Remove the 3 cable screws (T20).
7. Remove the 3 screws on relay card (T20).
8. Remove the relay card by pushing in the
retaining clips on the standos. Use a screwdriver
if necessary.
9. Remove the mounting plate.
Reinstall in the reverse order.
1 Relay transducer card
2 Relay card mounting plate
Illustration 7.11 Relay or Transducer Card
7.4.6 Rectier Modules
1. Loosen and remove the 2 cables (T20).
2. Remove the 6 screws (T20) from the shield.
3. Remove metal shield and plastic cover.
4. Remove the 2 screws (T20) from each of the
rectier
modules.
5. Remove the 3 rectier modules.
7.4.7 IGBT
1. Remove the 4 screws (T20) from the cable
connector plate.
2. Remove the cable connector plate.
3. Loosen the coil cables (T20).
4. Unplug the cables.
5. Remove the 2 screws from each of the 2
capacitors
6. Remove the capacitors.
7. Remove the 4 screws (T20) from the bus bar.
8. Remove the cables from the IGBTs.
9. Remove the 2 screws (T20) from each IGBT.
10. Remove the IGBTs.
CAUTION
The IGBTs and the heat sink have thermal paste on them.
Be careful not to touch the paste directly as it is
poisonous.
11. Remove the thermal paste from the IGBT.
12. Clean the heat sink.
Reinstall in the reverse order. Join the mounting snaps.
H-Frame Size Disassembly a... TR150 and TR170 Service Manual
BAS-SVM04B-EN 02/2017 All rights reserved. 63
7
7