Outdoor Unit Fan Motor; Class 20~42 Units - Daikin Sensira Series Service Manual

2 | Components

2.9 Outdoor unit fan motor

2.9.1 Class 20~42 units

Checking procedures
To perform a mechanical check of the propeller fan blade assembly
To perform a mechanical check of the DC fan motor assembly
To perform an electrical check of the DC fan motor assembly
Service manual
92
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 If propeller fan blade touches the bellmounth, check if the fan motor is
correctly mounted on its base, see
2 Check the state of the propeller fan blade assembly for damage, deformations
and cracks.
Is the propeller fan blade assembly
damaged?
Yes
No
Prerequisite: First perform a mechanical check of the propeller fan blade
assembly, see "Checking
1 Visually check:
▪ For any burnt‑out part or wire. If found, replace the fan motor, see
4
procedures" [ 94].
▪ That fan motor fixation bolts are correctly installed and fixed. Correct as
needed.
2 Manually rotate the fan motor shaft. Check that it rotates smoothly.
3 Check the friction of the DC fan motor shaft bearing.
Is the DC fan motor shaft friction
normal?
Yes
No
1 First perform a mechanical check of the DC fan motor assembly, see
4
procedures" [ 92].
"Repair procedures" [
Action
Replace the propeller fan blade
assembly, see
procedures" [
Perform a mechanical check of the DC
fan motor assembly, see
procedures" [
4
procedures" [ 92].
Action
Perform an electrical check of the DC
fan motor assembly, see
procedures" [
Replace the DC fan motor assembly, see
"Repair
FTXF20~71A + FTXF20~25B + FTXF20~42C + ATXF20~71A + ATXF20~42C
+ RXF20~71A + RXF20~60B + RXF20~42C + ARXF20~71A + ARXF20~42C
4
"2.10 Plate work" [ 101].
4
94].
"Repair
4
94].
"Checking
4
92].
"Checking
4
92].
4
procedures" [ 94].
"Checking
Split Sensira R32
ESIE18-12E – 2021.02
"Repair