Hitachi RAS-3-HVNC - Removing the Compressor

10. Servicing
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SMGB0079 rev.0 - 01/2013
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5 Remove the electrical box cover.
6 Remove the fan motor connector (CN24) inserted into the PCB in the electrical box.
Remove the fan motor lead wire xed onto the motor clamp using a cord band.
Remove 4 screws which xes the motor.
1. Cap nut.
2. Propeller fan.
1. Electrical box cover.
1. Cord band.
2. Fan motor lead wire.
3. Four (4) screws.
4. Fan motor.
N O T E
• Tomountthemotorbesuretoplacetheleadwireoutletdownward.
• Fixthemotorleadwireontothemotorclampusingacordbandasbeforetoavoidobstructingthepropeller
fan.
• Mountingthepropellerfan:
• Inserttheskiddingprotectionpartofthefanbossmatchingwiththemotorshaftnotch;tightenthenutafter
theshaftscrewfullycomesout.(TighteningTorque3.0Nm).
• ConnectthemotorleadwiretotheelectricalboxPCB.(Toconnectinsertintotheconnector(CN24)onthe
PCB).
10.2.4 Removing the compressor
N O T E
• 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con-
nection.
• 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 Removing 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 Removing front cover.