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Silicone Grease on Power Transistor/Diode Bridge
SiUS091601EA
219
Part 7 Trial Operation and Field Settings
7. Silicone Grease on Power Transistor/Diode Bridge
Outline
Apply the specified silicone grease to the heat radiation part of a power transistor/diode bridge
when you replace an outdoor unit PCB. The silicone grease encourages the heat radiation of a
power transistor/diode bridge.
Details
1. Wipe off the old silicone grease completely.
2. Apply the silicone grease evenly. See the illustrations below for examples of application.
3. Tighten the screws of the power transistor/diode bridge.
4. Make sure that the heat radiation parts are firmly contacted to the radiation fin.
Note: Smoke emission may be caused by bad heat radiation when the silicone grease is not
appropriately applied.
OK: Evenly applied
NG: Not evenly applied
NG: Foreign matter is stuck.
(R22541)
Po
w
er transistor
(or diode
b
ridge)
Silicone grease
Radiation
fin
PCB
(R21
8
66)
Foreign matter
(R21
8
67)
Summary of Contents for FTX-N Series
Page 18: ...SiUS091601EA 13 Part 2 Specifications 1 Specifications 14 Part 2 Specifications...
Page 198: ...Check SiUS091601EA 193 Part 6 Service Diagnosis 18 24 class R24538 1 2 3 4 Multimeter...
Page 201: ...SiUS091601EA Check Part 6 Service Diagnosis 196 18 24 class R24539 DC DC W V U...
Page 229: ...SiUS091601EA Piping Diagrams Part 8 Appendix 224 RXL15QMVJU RXL18UMVJU 3D100007 3D123368...
Page 230: ...Piping Diagrams SiUS091601EA 225 Part 8 Appendix RXL24UMVJU 3D107985A...