Hitachi UTOPIA RAS-4HVRP2E - Removing the Compressor

9 Servicing
RAS-3HVRC2
SMGB0136 rev.0 - 07/2021
179
9
9.2.4 Removing the compressor
? NOTE
• Donotexposetherefrigerantcycletotheatmosphereforalongperiodtoavoidmoistureordustintothecycle.Besuretoreplace
thecompressorimmediatelyafterremoving.Sealtothesuctionanddischargepipeswhentherefrigerantcycleisleftunattachedfor
aprolongedtime.
• Removethecapofnewcompressorrightbeforethereplacement.Beforemountingthecompressorsealthesuctionanddischarge
pipeswithatapetoprotectthecompressorfromdust.Removethetapeatpipeconnection.
• Toconnectwiringatreassemblingensurethatthecompressorterminalnumbersandwiringmarkbandcodesarematched.Incorrect
wiringnumbersmayresultininverserotationanddamagethecompressor.
1 Remove the pipe cover following “9.2.1Removingthepipecover”. When the outdoor unit is installed close to a wall
move the unit from the wall removing the refrigerant piping.
2 Collect the refrigerant from the check joint.
3 Remove the front cover following ““9.2.2Removingthefrontcover”.
4 Remove 8 xing screws and remove the side cover.
21
3
4
6
7
5
8
1-Electricalboxcover
2-Sidecover
3-Heatexchanger
4-Compressor-topthermistorandwiring
5-Sideandtopsoundproffcover
6-Compressor
7-Accumulator
8-Terminalboxcover
5 Open the soundproof cover wrapped around the compressor and remove the terminal box cover of the compressor
body.
6 Disconnect the compressor wires in the terminal box and remove the thermistor on top of the compressor.
! CAUTION
Checkthewiringcolorandlayoutwhendisconnecting.Connectingwiresinwrongorderatreassemblingmayresultincompressordam-
age.
1
2
3
4
5
6
1-Compressor-topthermistormountontoterminalcoverwith
metaltting.
2-Yellow.
3-White.
4-Red.
5-Terminalcover.
6-M8hexagonalnut.