7 Servicing
RPC-(1.5-6.0)FSR - Ceiling type
SMGB0137 rev.0 - 05/2021
216
Notes for mounting bearing
Mount the fixing plate for a flange bearing according to the following notes:
• Align the shaft centers of the flange 1 and flange 2.
• Insert washers between the flanges.
• The tightening torque for bolts shall be 6N-m. This indoor unit utilizes the self-aligning bearing which enables the
self-alignment by reducing the alignment torque for the bearing. Therefore, if the tightening work is not performed
correctly, an abnormal noise may occur.
• Check that only the bearing body rotates and moves with the bolts tightened.
ۑ
The centers of the flange 1
and 2 are out of alignment
Flange 1
Flange 2
Washer
Washer
Shaft
Bearing
7.4.6
Removing coupling (Except for RPC-(1.5-2.0)FSR)
1
Open the air inlet grille downward according to
“7.4.1 Removing air filter and air inlet grille”
.
2
Remove the lower casing according to
“7.4.4 Removal of the fan motor”
.
3
Loosen 2 fixing screws for the coupling with a hexagon wrench and shift the coupling to the fan motor according to
“7.4.4 Removal of the fan motor”
4
Shift the shaft to the plate in the direction of the arrow (
1
). Then remove the coupling from the fan motor (
2
).
1
2
Notes for remounting coupling
• Tighten the fixing screws, inserting them into the grooves on the shaft.
• Pay attention to the insertion direction of the coupling because the diameters of the shaft and the motor shaft are
different.
• The coupling shall be located 24mm away from the fan motor.
Coupling
Fan Motor
Shaft
φ
15
φ
12
24
Tighten the fixing screws,
inserting them into the grooves on the shaft.
Tighten the fixing screws, inserting them into
the grooves on the shaft
Fan motor
Coupling
Shaft
