3
|
Components
Service manual
114
(A)(F)TXF20~71A + FTXF20~25B + (A)(F)TXF20~42C + (A)(F)TXF20~42D +
(A)(F)TXF20~42E + (A)RXF20~71A + RXF20~60B + (A)RXF20~42C +
(A)RXF20~42D + (A)RXF20~42E
Split Sensira R32
ESIE18-12G – 2023.01
3.9 Outdoor unit fan motor
3.9.1 Class 20~42 units
Checking procedures
INFORMATION
It is recommended to perform the checks in the listed order.
To perform a mechanical check of the propeller fan blade assembly
Prerequisite:
Stop the unit operation via the user interface.
Prerequisite:
Turn OFF the respective circuit breaker.
Prerequisite:
Remove the required plate work, see
124].
1
If propeller fan blade touches the bell mounth, check if the fan motor is
correctly mounted on its base, see
117].
2
Check the state of the propeller fan blade assembly for damage, deformations
and cracks.
Is the propeller fan blade assembly
damaged?
Action
Yes
Replace the propeller fan blade
assembly, see
No
Perform a mechanical check of the DC
fan motor assembly, see
To perform a mechanical check of the DC fan motor assembly
Prerequisite:
First perform a mechanical check of the propeller fan blade
1
Visually check:
▪
For any burnt‑out part or wire. If found, replace the fan motor, see
117].
▪
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?
Action
Yes
Perform an electrical check of the DC
fan motor assembly, see
No
Replace the DC fan motor assembly, see
117].
To perform an electrical check of the DC fan motor assembly
(A)RXF20~35A + RXF20+25B + (A)RXF20~42C + (A)RXF42D units
1
First perform a mechanical check of the DC fan motor assembly, see