Hitachi RCI-4.0FSR - Removing Bearing (Except For Rpc-(1.5-2.0)FSR)

7 Servicing
RPC-(1.5-6.0)FSR - Ceiling type
SMGB0137 rev.0 - 05/2021
215
7
11 Remove 2 motor xing bands (
1
). Remove the fan runner on the right and fan motor by shifting them in the direction of
the arrow (
2
) with care not to drop them. It takes 2 people to carry out the work .
12 Remove the xing screw for the fan runner with a hexagon wrench and remove the fan runner from the fan motor.
Motor xing bands 
Motor Fixing Bands
1
Screw
2
Screw
7.4.5 Removing bearing (Except for RPC-(1.5-2.0)FSR)
1 Open the air inlet grille downward according to “7.4.1 Removing
air lter and air inlet grille”.
2 Remove the lower casing according to “7.4.4 Removal of the fan
motor”.
3 Loosen 2 xing screws for the coupling with a hexagon wrench
and shift the coupling to the fan motor side according to
“7.4.4 Removal of the fan motor”.
4 Remove 4 screws for the xing plate for the bearing as shown in
the gure. Remove the xing plate for the bearing together with
the shaft and fan runner. It takes 2 people to carry out the work.
5 Loosen 1 xing screw for the fan runner with a hexagon wrench
and remove the fan runner (
1
) from the shaft. Then pull the
xing plate for the bearing out from the shaft (
2
).
? NOTE
When pulling the xing plate for the bearing out, do not damage the shaft
surface contacting the bearing. If it is damaged, an abnormal noise may
occur. When remounting the fan runners, mount them with each of them
rotated by 180º as shown in the gure.
1
2
Shift the coupling to
fan motor side
Screws for xing plate for bearing
Screws for xing
plate for bearing
Fixing plate for
bearing
Fixing plate for bearing
Screw
180
o
180
o
Each fan runner is installed at every 180º angle.
View from P
Outline of fan runner
Screw position of
nº 2 fan runner
Screw position
of coupling
Screw position
of nº 1 (nº 3) fan
runner
P
Nº 1 fan
runner
Nº 2 fan
runner
Nº 3 fan
runner
Screw
Screw
Fan motor
6 Remove 2 xing bolts (M8) for the bearing and remove it. When mounting it, refer to the following notes.
Fixing Plate for Bearing
Bolts (M8)
Fixing plate for bearing
Bolts (M8)