9 Servicing
RPC-(1.5-6.0)FSN3 - Ceiling type
SMGB0099 rev.0 - 12/2016
285
9
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
9.5.6 Removing Coupling (Except for RPC-1.5 and 2.0FSN3)
1 Open the air inlet grille downward according to
Air Filter and Air Inlet Grille”
2 Remove the lower casing according to
.
3
Loosen 2 fixing screws for the coupling with a hexagon wrench
and shift the coupling to the fan motor according to
.
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
