Hitachi RAS-3-HVNC - Electrical Checks of Main Parts

10. Servicing
425
SMGB0079 rev.0 - 01/2013
10
10.4.3.5 Removing outdoor fan motor
1 Remove the service cover following Removing service cover.
2 Remove the outlet grille following Remove outlet grille.
3 If necessary, remove the upper cover following Removing upper cover.
4 To remove the propeller fan remove the cap nut and washer which x the propeller fan onto the motor shaft. (Use a
puller when the propeller fan and motor shaft are xed too tightly).
1
1. Upper cover.
1. Fan motor lead wire.
2. Motor clamp.
3. Motor.
4. Screw with spacer.
5 Remove the fan motor connector from PCB in the electrical box.
Cut the plastic tie with nippers which xes the fan motor lead wire onto the motor clamp.
Remove 4 screws which x the motor.
Model RAS-12HNC
Fan Motor Comp. Nº
DC Fan Motor
Inverter PCB
CN406 (Red)
AC Fan Motor
inverter PCB
PCN404 (White)
Screws for motor
xing.
DC Fan Motor 4 x M6 screw (with spacer)
AC Fan Motor 4x M8 screws
Motor clamp
Fan motor
lead wire
Plastic tie
Cord clamp
Fan motor
Plastic tie
N O T E
1 Tomountthemotorbesuretoplacetheleadwireoutletdownward. 
(Adjustthepropellerfanandshroudnottocontactwitheachother).
2 Fixthemotorleadwireontothemotorclampusingaplastictieasshowninthetableonthepreviouspageto
avoidobstructingthepropellerfan.
3 Mounting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20Nm)
4 ConnectthemotorleadwiretoPCB1oftheelectricalbox. 
(BesuretomatchcolorsofthePCBconnectorsandmotorleadwireconnectors).
5 Besuretoattachtheoutletgrillontotheshroudafterreplacingthefanmotor.